Merge pull request 'Fix total_amount to use base price' (#17) from feature/exclusive-summary into main

Reviewed-on: #17

Dockerfile

@@ -1,5 +1,5 @@
 # 1) Build stage
-FROM golang:1.21-alpine AS build
+FROM golang:1.24-alpine AS build
 RUN apk --no-cache add ca-certificates tzdata git curl
 WORKDIR /src
 COPY go.mod go.sum ./

Makefile

@@ -83,6 +83,12 @@ migration-up:
 migration-down:
 	@migrate -database $(DB_URL) -path ./migrations down 1
 
+# Force migration to specific version
+
+.SILENT: migration-force
+migration-force:
+	@migrate -database $(DB_URL) -path ./migrations force $(version)
+
 .SILENT: seeder-create
 seeder-create:
 	@migrate create -ext sql -dir ./seeders -seq $(name)

internal/app/app.go

@@ -48,6 +48,7 @@ func (a *App) Initialize(cfg *config.Config) error {
 	// Initialize omset milestone scheduler
 	a.omsetScheduler = service.NewOmsetMilestoneScheduler(
 		repos.organizationRepo,
+		repos.outletRepo,
 		repos.userRepo,
 		processors.notificationProcessor,
 	)
@@ -107,6 +108,8 @@ func (a *App) Initialize(cfg *config.Config) error {
 		validators.vendorValidator,
 		services.purchaseOrderService,
 		validators.purchaseOrderValidator,
+		services.purchaseCategoryService,
+		validators.purchaseCategoryValidator,
 		services.unitConverterService,
 		validators.unitConverterValidator,
 		services.chartOfAccountTypeService,
@@ -135,15 +138,18 @@ func (a *App) Initialize(cfg *config.Config) error {
 		services.productOutletPriceService,
 		validators.productOutletPriceValidator,
 		selfOrderHandler,
+		services.expenseService,
+		validators.expenseValidator,
+		a.redisClient,
 	)
 
 	return nil
 }
 
 func (a *App) Start(port string) error {
-	// Start the omset milestone scheduler (checks every hour)
+	// Start the omset milestone scheduler (checks every 5 minutes for daily omset milestones)
 	if a.omsetScheduler != nil {
-		a.omsetScheduler.Start(1 * time.Hour)
+		a.omsetScheduler.Start(5 * time.Minute)
 	}
 
 	engine := a.router.Init()
@@ -212,6 +218,7 @@ type repositories struct {
 	productRecipeRepo              *repository.ProductRecipeRepository
 	vendorRepo                     *repository.VendorRepositoryImpl
 	purchaseOrderRepo              *repository.PurchaseOrderRepositoryImpl
+	purchaseCategoryRepo           *repository.PurchaseCategoryRepositoryImpl
 	unitConverterRepo              *repository.IngredientUnitConverterRepositoryImpl
 	chartOfAccountTypeRepo         *repository.ChartOfAccountTypeRepositoryImpl
 	chartOfAccountRepo             *repository.ChartOfAccountRepositoryImpl
@@ -236,6 +243,7 @@ type repositories struct {
 	notificationReceiverRepo       *repository.NotificationReceiverRepositoryImpl
 	notificationDeliveryRepo       *repository.NotificationDeliveryRepositoryImpl
 	productOutletPriceRepo         *repository.ProductOutletPriceRepositoryImpl
+	expenseRepo                    *repository.ExpenseRepositoryImpl
 }
 
 func (a *App) initRepositories() *repositories {
@@ -264,6 +272,7 @@ func (a *App) initRepositories() *repositories {
 		productRecipeRepo:              repository.NewProductRecipeRepository(a.db),
 		vendorRepo:                     repository.NewVendorRepositoryImpl(a.db),
 		purchaseOrderRepo:              repository.NewPurchaseOrderRepositoryImpl(a.db),
+		purchaseCategoryRepo:           repository.NewPurchaseCategoryRepositoryImpl(a.db),
 		unitConverterRepo:              repository.NewIngredientUnitConverterRepositoryImpl(a.db).(*repository.IngredientUnitConverterRepositoryImpl),
 		chartOfAccountTypeRepo:         repository.NewChartOfAccountTypeRepositoryImpl(a.db),
 		chartOfAccountRepo:             repository.NewChartOfAccountRepositoryImpl(a.db),
@@ -288,6 +297,7 @@ func (a *App) initRepositories() *repositories {
 		notificationReceiverRepo:       repository.NewNotificationReceiverRepository(a.db),
 		notificationDeliveryRepo:       repository.NewNotificationDeliveryRepository(a.db),
 		productOutletPriceRepo:         repository.NewProductOutletPriceRepositoryImpl(a.db),
+		expenseRepo:                    repository.NewExpenseRepositoryImpl(a.db),
 	}
 }
 
@@ -311,6 +321,7 @@ type processors struct {
 	productRecipeProcessor              *processor.ProductRecipeProcessorImpl
 	vendorProcessor                     *processor.VendorProcessorImpl
 	purchaseOrderProcessor              *processor.PurchaseOrderProcessorImpl
+	purchaseCategoryProcessor           *processor.PurchaseCategoryProcessorImpl
 	unitConverterProcessor              *processor.IngredientUnitConverterProcessorImpl
 	chartOfAccountTypeProcessor         *processor.ChartOfAccountTypeProcessorImpl
 	chartOfAccountProcessor             *processor.ChartOfAccountProcessorImpl
@@ -333,6 +344,7 @@ type processors struct {
 	userDeviceProcessor                 *processor.UserDeviceProcessorImpl
 	notificationProcessor               *processor.NotificationProcessorImpl
 	productOutletPriceProcessor         processor.ProductOutletPriceProcessor
+	expenseProcessor                    *processor.ExpenseProcessorImpl
 }
 
 func (a *App) initProcessors(cfg *config.Config, repos *repositories) *processors {
@@ -354,13 +366,14 @@ func (a *App) initProcessors(cfg *config.Config, repos *repositories) *processor
 		paymentMethodProcessor:              processor.NewPaymentMethodProcessorImpl(repos.paymentMethodRepo),
 		fileProcessor:                       processor.NewFileProcessorImpl(repos.fileRepo, fileClient),
 		customerProcessor:                   processor.NewCustomerProcessor(repos.customerRepo),
-		analyticsProcessor:                  processor.NewAnalyticsProcessorImpl(repos.analyticsRepo),
+		analyticsProcessor:                  processor.NewAnalyticsProcessorImpl(repos.analyticsRepo, repos.expenseRepo),
 		tableProcessor:                      processor.NewTableProcessor(repos.tableRepo, repos.orderRepo),
 		unitProcessor:                       processor.NewUnitProcessor(repos.unitRepo),
 		ingredientProcessor:                 processor.NewIngredientProcessor(repos.ingredientRepo, repos.unitRepo, repos.ingredientCompositionRepo),
 		productRecipeProcessor:              processor.NewProductRecipeProcessor(repos.productRecipeRepo, repos.productRepo, repos.ingredientRepo),
 		vendorProcessor:                     processor.NewVendorProcessorImpl(repos.vendorRepo),
-		purchaseOrderProcessor:              processor.NewPurchaseOrderProcessorImpl(repos.purchaseOrderRepo, repos.vendorRepo, repos.ingredientRepo, repos.unitRepo, repos.fileRepo, inventoryMovementService, repos.unitConverterRepo),
+		purchaseOrderProcessor:              processor.NewPurchaseOrderProcessorImpl(repos.purchaseOrderRepo, repos.vendorRepo, repos.ingredientRepo, repos.purchaseCategoryRepo, repos.unitRepo, repos.fileRepo, inventoryMovementService, repos.unitConverterRepo),
+		purchaseCategoryProcessor:           processor.NewPurchaseCategoryProcessorImpl(repos.purchaseCategoryRepo),
 		unitConverterProcessor:              processor.NewIngredientUnitConverterProcessorImpl(repos.unitConverterRepo, repos.ingredientRepo, repos.unitRepo),
 		chartOfAccountTypeProcessor:         processor.NewChartOfAccountTypeProcessorImpl(repos.chartOfAccountTypeRepo),
 		chartOfAccountProcessor:             processor.NewChartOfAccountProcessorImpl(repos.chartOfAccountRepo, repos.chartOfAccountTypeRepo),
@@ -383,6 +396,7 @@ func (a *App) initProcessors(cfg *config.Config, repos *repositories) *processor
 		userDeviceProcessor:                 processor.NewUserDeviceProcessorImpl(repos.userDeviceRepo),
 		notificationProcessor:               buildNotificationProcessor(cfg, repos),
 		productOutletPriceProcessor:         processor.NewProductOutletPriceProcessorImpl(repos.productOutletPriceRepo, repos.productRepo, repos.outletRepo),
+		expenseProcessor:                    processor.NewExpenseProcessorImpl(repos.expenseRepo, repos.purchaseCategoryRepo),
 	}
 }
 
@@ -408,6 +422,7 @@ type services struct {
 	productRecipeService              *service.ProductRecipeServiceImpl
 	vendorService                     *service.VendorServiceImpl
 	purchaseOrderService              *service.PurchaseOrderServiceImpl
+	purchaseCategoryService           service.PurchaseCategoryService
 	unitConverterService              *service.IngredientUnitConverterServiceImpl
 	chartOfAccountTypeService         service.ChartOfAccountTypeService
 	chartOfAccountService             service.ChartOfAccountService
@@ -422,6 +437,7 @@ type services struct {
 	userDeviceService                 service.UserDeviceService
 	notificationService               service.NotificationService
 	productOutletPriceService         service.ProductOutletPriceService
+	expenseService                    *service.ExpenseServiceImpl
 }
 
 func (a *App) initServices(processors *processors, repos *repositories, cfg *config.Config) *services {
@@ -446,6 +462,7 @@ func (a *App) initServices(processors *processors, repos *repositories, cfg *con
 	productRecipeService := service.NewProductRecipeService(processors.productRecipeProcessor)
 	vendorService := service.NewVendorService(processors.vendorProcessor)
 	purchaseOrderService := service.NewPurchaseOrderService(processors.purchaseOrderProcessor)
+	purchaseCategoryService := service.NewPurchaseCategoryService(processors.purchaseCategoryProcessor)
 	unitConverterService := service.NewIngredientUnitConverterService(processors.unitConverterProcessor)
 	chartOfAccountTypeService := service.NewChartOfAccountTypeService(processors.chartOfAccountTypeProcessor)
 	chartOfAccountService := service.NewChartOfAccountService(processors.chartOfAccountProcessor)
@@ -485,6 +502,7 @@ func (a *App) initServices(processors *processors, repos *repositories, cfg *con
 		productRecipeService:              productRecipeService,
 		vendorService:                     vendorService,
 		purchaseOrderService:              purchaseOrderService,
+		purchaseCategoryService:           purchaseCategoryService,
 		unitConverterService:              unitConverterService,
 		chartOfAccountTypeService:         chartOfAccountTypeService,
 		chartOfAccountService:             chartOfAccountService,
@@ -499,6 +517,7 @@ func (a *App) initServices(processors *processors, repos *repositories, cfg *con
 		userDeviceService:                 userDeviceService,
 		notificationService:               notificationService,
 		productOutletPriceService:         service.NewProductOutletPriceService(processors.productOutletPriceProcessor),
+		expenseService:                    service.NewExpenseService(processors.expenseProcessor),
 	}
 }
 
@@ -529,6 +548,7 @@ type validators struct {
 	tableValidator                      *validator.TableValidator
 	vendorValidator                     *validator.VendorValidatorImpl
 	purchaseOrderValidator              *validator.PurchaseOrderValidatorImpl
+	purchaseCategoryValidator           *validator.PurchaseCategoryValidatorImpl
 	unitConverterValidator              *validator.IngredientUnitConverterValidatorImpl
 	chartOfAccountTypeValidator         *validator.ChartOfAccountTypeValidatorImpl
 	chartOfAccountValidator             *validator.ChartOfAccountValidatorImpl
@@ -541,6 +561,7 @@ type validators struct {
 	userDeviceValidator                 *validator.UserDeviceValidatorImpl
 	notificationValidator               *validator.NotificationValidatorImpl
 	productOutletPriceValidator         *validator.ProductOutletPriceValidatorImpl
+	expenseValidator                    *validator.ExpenseValidatorImpl
 }
 
 func (a *App) initValidators() *validators {
@@ -559,6 +580,7 @@ func (a *App) initValidators() *validators {
 		tableValidator:                      validator.NewTableValidator(),
 		vendorValidator:                     validator.NewVendorValidator(),
 		purchaseOrderValidator:              validator.NewPurchaseOrderValidator(),
+		purchaseCategoryValidator:           validator.NewPurchaseCategoryValidator(),
 		unitConverterValidator:              validator.NewIngredientUnitConverterValidator().(*validator.IngredientUnitConverterValidatorImpl),
 		chartOfAccountTypeValidator:         validator.NewChartOfAccountTypeValidator().(*validator.ChartOfAccountTypeValidatorImpl),
 		chartOfAccountValidator:             validator.NewChartOfAccountValidator().(*validator.ChartOfAccountValidatorImpl),
@@ -571,6 +593,7 @@ func (a *App) initValidators() *validators {
 		userDeviceValidator:                 validator.NewUserDeviceValidator(),
 		notificationValidator:               validator.NewNotificationValidator(),
 		productOutletPriceValidator:         validator.NewProductOutletPriceValidator(),
+		expenseValidator:                    validator.NewExpenseValidator(),
 	}
 }
 

internal/constants/error.go

@@ -40,6 +40,7 @@ const (
 	OutletServiceEntity                  = "outlet_service"
 	VendorServiceEntity                  = "vendor_service"
 	PurchaseOrderServiceEntity           = "purchase_order_service"
+	PurchaseCategoryServiceEntity        = "purchase_category_service"
 	IngredientUnitConverterServiceEntity = "ingredient_unit_converter_service"
 	IngredientCompositionServiceEntity   = "ingredient_composition_service"
 	TableEntity                          = "table"
@@ -60,6 +61,7 @@ const (
 	NotificationServiceEntity       = "notification_service"
 	NotificationHandlerEntity       = "notification_handler"
 	ProductOutletPriceServiceEntity = "product_outlet_price_service"
+	ExpenseServiceEntity            = "expense_service"
 )
 
 var HttpErrorMap = map[string]int{

internal/constants/expense.go

@@ -0,0 +1,28 @@
+package constants
+
+type ExpenseStatus string
+
+const (
+	ExpenseStatusDraft    ExpenseStatus = "draft"
+	ExpenseStatusSent     ExpenseStatus = "sent"
+	ExpenseStatusApproved ExpenseStatus = "approved"
+	ExpenseStatusCancel   ExpenseStatus = "cancel"
+)
+
+func GetAllExpenseStatuses() []ExpenseStatus {
+	return []ExpenseStatus{
+		ExpenseStatusDraft,
+		ExpenseStatusSent,
+		ExpenseStatusApproved,
+		ExpenseStatusCancel,
+	}
+}
+
+func IsValidExpenseStatus(status ExpenseStatus) bool {
+	for _, validStatus := range GetAllExpenseStatuses() {
+		if status == validStatus {
+			return true
+		}
+	}
+	return false
+}

internal/contract/account_request.go

@@ -5,12 +5,12 @@ import (
 )
 
 type CreateAccountRequest struct {
-	ChartOfAccountID uuid.UUID  `json:"chart_of_account_id" validate:"required"`
-	Name             string     `json:"name" validate:"required,min=1,max=255"`
-	Number           string     `json:"number" validate:"required,min=1,max=50"`
-	AccountType      string     `json:"account_type" validate:"required,oneof=cash wallet bank credit debit asset liability equity revenue expense"`
-	OpeningBalance   float64    `json:"opening_balance"`
-	Description      *string    `json:"description"`
+	ChartOfAccountID uuid.UUID `json:"chart_of_account_id" validate:"required"`
+	Name             string    `json:"name" validate:"required,min=1,max=255"`
+	Number           string    `json:"number" validate:"required,min=1,max=50"`
+	AccountType      string    `json:"account_type" validate:"required,oneof=cash wallet bank credit debit asset liability equity revenue expense"`
+	OpeningBalance   float64   `json:"opening_balance"`
+	Description      *string   `json:"description"`
 }
 
 type UpdateAccountRequest struct {
@@ -24,21 +24,21 @@ type UpdateAccountRequest struct {
 }
 
 type AccountResponse struct {
-	ID               uuid.UUID                 `json:"id"`
-	OrganizationID   uuid.UUID                 `json:"organization_id"`
-	OutletID         *uuid.UUID                `json:"outlet_id"`
-	ChartOfAccountID uuid.UUID                 `json:"chart_of_account_id"`
-	Name             string                    `json:"name"`
-	Number           string                    `json:"number"`
-	AccountType      string                    `json:"account_type"`
-	OpeningBalance   float64                   `json:"opening_balance"`
-	CurrentBalance   float64                   `json:"current_balance"`
-	Description      *string                   `json:"description"`
-	IsActive         bool                      `json:"is_active"`
-	IsSystem         bool                      `json:"is_system"`
-	CreatedAt        string                    `json:"created_at"`
-	UpdatedAt        string                    `json:"updated_at"`
-	ChartOfAccount   *ChartOfAccountResponse   `json:"chart_of_account,omitempty"`
+	ID               uuid.UUID               `json:"id"`
+	OrganizationID   uuid.UUID               `json:"organization_id"`
+	OutletID         *uuid.UUID              `json:"outlet_id"`
+	ChartOfAccountID uuid.UUID               `json:"chart_of_account_id"`
+	Name             string                  `json:"name"`
+	Number           string                  `json:"number"`
+	AccountType      string                  `json:"account_type"`
+	OpeningBalance   float64                 `json:"opening_balance"`
+	CurrentBalance   float64                 `json:"current_balance"`
+	Description      *string                 `json:"description"`
+	IsActive         bool                    `json:"is_active"`
+	IsSystem         bool                    `json:"is_system"`
+	CreatedAt        string                  `json:"created_at"`
+	UpdatedAt        string                  `json:"updated_at"`
+	ChartOfAccount   *ChartOfAccountResponse `json:"chart_of_account,omitempty"`
 }
 
 type ListAccountsRequest struct {

internal/contract/analytics_contract.go

@@ -83,6 +83,71 @@ type SalesAnalyticsData struct {
 	NetSales float64   `json:"net_sales"`
 }
 
+type PurchasingAnalyticsRequest struct {
+	OrganizationID uuid.UUID
+	OutletID       *string `form:"outlet_id,omitempty"`
+	DateFrom       string  `form:"date_from" validate:"required"`
+	DateTo         string  `form:"date_to" validate:"required"`
+	GroupBy        string  `form:"group_by,default=day" validate:"omitempty,oneof=day hour week month"`
+}
+
+type PurchasingAnalyticsResponse struct {
+	OrganizationID uuid.UUID                  `json:"organization_id"`
+	OutletID       *uuid.UUID                 `json:"outlet_id,omitempty"`
+	OutletName     *string                    `json:"outlet_name,omitempty"`
+	DateFrom       time.Time                  `json:"date_from"`
+	DateTo         time.Time                  `json:"date_to"`
+	GroupBy        string                     `json:"group_by"`
+	Summary        PurchasingSummary          `json:"summary"`
+	Data           []PurchasingAnalyticsData  `json:"data"`
+	IngredientData []PurchasingIngredientData `json:"ingredient_data"`
+	VendorData     []PurchasingVendorData     `json:"vendor_data"`
+}
+
+type PurchasingSummary struct {
+	TotalPurchases            float64 `json:"total_purchases"`
+	RawMaterialPurchases      float64 `json:"raw_material_purchases"`
+	ExpensePurchases          float64 `json:"expense_purchases"`
+	TotalPurchaseOrders       int64   `json:"total_purchase_orders"`
+	RawMaterialPurchaseOrders int64   `json:"raw_material_purchase_orders"`
+	ExpenseCount              int64   `json:"expense_count"`
+	TotalQuantity             float64 `json:"total_quantity"`
+	AveragePurchaseOrderValue float64 `json:"average_purchase_order_value"`
+	TotalIngredients          int64   `json:"total_ingredients"`
+	TotalVendors              int64   `json:"total_vendors"`
+}
+
+type PurchasingAnalyticsData struct {
+	Date                      time.Time `json:"date"`
+	Purchases                 float64   `json:"purchases"`
+	RawMaterialPurchases      float64   `json:"raw_material_purchases"`
+	ExpensePurchases          float64   `json:"expense_purchases"`
+	PurchaseOrders            int64     `json:"purchase_orders"`
+	RawMaterialPurchaseOrders int64     `json:"raw_material_purchase_orders"`
+	ExpenseCount              int64     `json:"expense_count"`
+	Quantity                  float64   `json:"quantity"`
+	Ingredients               int64     `json:"ingredients"`
+	Vendors                   int64     `json:"vendors"`
+}
+
+type PurchasingIngredientData struct {
+	IngredientID       uuid.UUID `json:"ingredient_id"`
+	IngredientName     string    `json:"ingredient_name"`
+	Quantity           float64   `json:"quantity"`
+	TotalCost          float64   `json:"total_cost"`
+	AverageUnitCost    float64   `json:"average_unit_cost"`
+	PurchaseOrderCount int64     `json:"purchase_order_count"`
+}
+
+type PurchasingVendorData struct {
+	VendorID           uuid.UUID `json:"vendor_id"`
+	VendorName         string    `json:"vendor_name"`
+	TotalCost          float64   `json:"total_cost"`
+	PurchaseOrderCount int64     `json:"purchase_order_count"`
+	IngredientCount    int64     `json:"ingredient_count"`
+	Quantity           float64   `json:"quantity"`
+}
+
 // ProductAnalyticsRequest represents the request for product analytics
 type ProductAnalyticsRequest struct {
 	OrganizationID uuid.UUID
@@ -105,6 +170,7 @@ type ProductAnalyticsData struct {
 	ProductID               uuid.UUID `json:"product_id"`
 	ProductName             string    `json:"product_name"`
 	ProductSku              string    `json:"product_sku"`
+	ProductPrice            float64   `json:"product_price"`
 	CategoryID              uuid.UUID `json:"category_id"`
 	CategoryName            string    `json:"category_name"`
 	CategoryOrder           int       `json:"category_order"`
@@ -179,7 +245,6 @@ type DashboardOverview struct {
 	RefundedOrders    int64   `json:"refunded_orders"`
 }
 
-// ProfitLossAnalyticsRequest represents the request for profit and loss analytics
 type ProfitLossAnalyticsRequest struct {
 	OrganizationID uuid.UUID
 	OutletID       *string `form:"outlet_id,omitempty"`
@@ -188,19 +253,20 @@ type ProfitLossAnalyticsRequest struct {
 	GroupBy        string  `form:"group_by,default=day" validate:"omitempty,oneof=day hour week month"`
 }
 
-// ProfitLossAnalyticsResponse represents the response for profit and loss analytics
 type ProfitLossAnalyticsResponse struct {
-	OrganizationID uuid.UUID           `json:"organization_id"`
-	OutletID       *uuid.UUID          `json:"outlet_id,omitempty"`
-	DateFrom       time.Time           `json:"date_from"`
-	DateTo         time.Time           `json:"date_to"`
-	GroupBy        string              `json:"group_by"`
-	Summary        ProfitLossSummary   `json:"summary"`
-	Data           []ProfitLossData    `json:"data"`
-	ProductData    []ProductProfitData `json:"product_data"`
+	OrganizationID           uuid.UUID                `json:"organization_id"`
+	OutletID                 *uuid.UUID               `json:"outlet_id,omitempty"`
+	DateFrom                 time.Time                `json:"date_from"`
+	DateTo                   time.Time                `json:"date_to"`
+	GroupBy                  string                   `json:"group_by"`
+	Summary                  ProfitLossSummary        `json:"summary"`
+	Data                     []ProfitLossData         `json:"data"`
+	ProductData              []ProductProfitData      `json:"product_data"`
+	MainSummary              []ProfitLossSummaryRow   `json:"main_summary"`
+	OperationalExpenses      []OperationalExpenseItem `json:"operational_expenses"`
+	OperationalExpensesTotal float64                  `json:"operational_expenses_total"`
 }
 
-// ProfitLossSummary represents the summary of profit and loss analytics
 type ProfitLossSummary struct {
 	TotalRevenue       float64 `json:"total_revenue"`
 	TotalCost          float64 `json:"total_cost"`
@@ -215,7 +281,6 @@ type ProfitLossSummary struct {
 	ProfitabilityRatio float64 `json:"profitability_ratio"`
 }
 
-// ProfitLossData represents individual profit and loss data point by time period
 type ProfitLossData struct {
 	Date              time.Time `json:"date"`
 	Revenue           float64   `json:"revenue"`
@@ -229,7 +294,6 @@ type ProfitLossData struct {
 	Orders            int64     `json:"orders"`
 }
 
-// ProductProfitData represents profit data for individual products
 type ProductProfitData struct {
 	ProductID         uuid.UUID `json:"product_id"`
 	ProductName       string    `json:"product_name"`
@@ -244,3 +308,130 @@ type ProductProfitData struct {
 	AverageCost       float64   `json:"average_cost"`
 	ProfitPerUnit     float64   `json:"profit_per_unit"`
 }
+
+type ProfitLossSummaryRow struct {
+	ID           string                 `json:"id"`
+	Label        string                 `json:"label"`
+	IsBold       bool                   `json:"is_bold"`
+	TodayNominal float64                `json:"today_nominal"`
+	TodayPct     float64                `json:"today_pct"`
+	MtdNominal   float64                `json:"mtd_nominal"`
+	MtdPct       float64                `json:"mtd_pct"`
+	SubItems     []ProfitLossSummaryRow `json:"sub_items,omitempty"`
+}
+
+type OperationalExpenseItem struct {
+	Item    string  `json:"item"`
+	Nominal float64 `json:"nominal"`
+}
+
+type ExclusiveSummaryPeriodRequest struct {
+	OrganizationID                uuid.UUID
+	OutletID                      *string `form:"outlet_id,omitempty"`
+	DateFrom                      string  `form:"date_from" validate:"required"`
+	DateTo                        string  `form:"date_to" validate:"required"`
+	ExcludeGajiStaffFromReimburse bool    `form:"exclude_gaji_staff_from_reimburse"`
+}
+
+type ExclusiveSummaryMonthlyRequest struct {
+	OrganizationID uuid.UUID
+	OutletID       *string `form:"outlet_id,omitempty"`
+	Month          string  `form:"month" validate:"required"`
+}
+
+type ExclusiveSummaryPeriodResponse struct {
+	OrganizationID              uuid.UUID                           `json:"organization_id"`
+	OutletID                    *uuid.UUID                          `json:"outlet_id,omitempty"`
+	Period                      ExclusiveSummaryPeriodRange         `json:"period"`
+	Summary                     ExclusiveSummaryPeriodSummary       `json:"summary"`
+	Reimburse                   ExclusiveSummaryReimburse           `json:"reimburse"`
+	HPPBreakdown                []ExclusiveSummaryCategoryBreakdown `json:"hpp_breakdown"`
+	OperationalExpenseBreakdown []ExclusiveSummaryCategoryBreakdown `json:"operational_expense_breakdown"`
+	DailySummary                []ExclusiveSummaryDailySummary      `json:"daily_summary"`
+	DailyTransactions           []ExclusiveSummaryDailyTransaction  `json:"daily_transactions"`
+}
+
+type ExclusiveSummaryPeriodRange struct {
+	DateFrom time.Time `json:"date_from"`
+	DateTo   time.Time `json:"date_to"`
+}
+
+type ExclusiveSummaryPeriodSummary struct {
+	Sales                    float64 `json:"sales"`
+	HPP                      float64 `json:"hpp"`
+	GrossProfit              float64 `json:"gross_profit"`
+	SalaryTotal              float64 `json:"salary_total"`
+	SalaryDW                 float64 `json:"salary_dw"`
+	SalaryStaff              float64 `json:"salary_staff"`
+	SalaryOther              float64 `json:"salary_other"`
+	OtherOperationalExpenses float64 `json:"other_operational_expenses"`
+	OperationalExpensesTotal float64 `json:"operational_expenses_total"`
+	TotalCost                float64 `json:"total_cost"`
+	NetProfit                float64 `json:"net_profit"`
+}
+
+type ExclusiveSummaryReimburse struct {
+	TotalCost           float64 `json:"total_cost"`
+	ExcludedSalaryStaff float64 `json:"excluded_salary_staff"`
+	TotalReimburse      float64 `json:"total_reimburse"`
+}
+
+type ExclusiveSummaryCategoryBreakdown struct {
+	CategoryCode string  `json:"category_code"`
+	CategoryName string  `json:"category_name"`
+	Amount       float64 `json:"amount"`
+	Percentage   float64 `json:"percentage"`
+}
+
+type ExclusiveSummaryDailySummary struct {
+	Date             time.Time `json:"date"`
+	TransactionCount int64     `json:"transaction_count"`
+	TotalCost        float64   `json:"total_cost"`
+}
+
+type ExclusiveSummaryDailyTransaction struct {
+	Date         time.Time `json:"date"`
+	CategoryCode string    `json:"category_code"`
+	CategoryName string    `json:"category_name"`
+	Description  string    `json:"description"`
+	Amount       float64   `json:"amount"`
+	Source       string    `json:"source"`
+}
+
+type ExclusiveSummaryMonthlyResponse struct {
+	OrganizationID uuid.UUID                       `json:"organization_id"`
+	OutletID       *uuid.UUID                      `json:"outlet_id,omitempty"`
+	Month          string                          `json:"month"`
+	Summary        ExclusiveSummaryMonthlySummary  `json:"summary"`
+	Periods        []ExclusiveSummaryMonthlyPeriod `json:"periods"`
+	BankBalance    []ExclusiveSummaryBankBalance   `json:"bank_balance"`
+}
+
+type ExclusiveSummaryMonthlySummary struct {
+	TotalSales               float64 `json:"total_sales"`
+	HPP                      float64 `json:"hpp"`
+	GrossProfit              float64 `json:"gross_profit"`
+	OperationalExpensesTotal float64 `json:"operational_expenses_total"`
+	TotalCost                float64 `json:"total_cost"`
+	NetProfit                float64 `json:"net_profit"`
+	NetProfitMargin          float64 `json:"net_profit_margin"`
+}
+
+type ExclusiveSummaryMonthlyPeriod struct {
+	Label       string    `json:"label"`
+	DateFrom    time.Time `json:"date_from"`
+	DateTo      time.Time `json:"date_to"`
+	Sales       float64   `json:"sales"`
+	HPP         float64   `json:"hpp"`
+	GrossProfit float64   `json:"gross_profit"`
+	GrossMargin float64   `json:"gross_margin"`
+}
+
+type ExclusiveSummaryBankBalance struct {
+	Bank             string   `json:"bank"`
+	OpeningBalance   *float64 `json:"opening_balance"`
+	IncomingMutation *float64 `json:"incoming_mutation"`
+	OutgoingMutation *float64 `json:"outgoing_mutation"`
+	ClosingBalance   *float64 `json:"closing_balance"`
+	Notes            *string  `json:"notes"`
+}

internal/contract/category_contract.go

@@ -10,7 +10,8 @@ type CreateCategoryRequest struct {
 	Name         string                 `json:"name" validate:"required,min=1,max=255"`
 	Description  *string                `json:"description,omitempty"`
 	BusinessType *string                `json:"business_type,omitempty"`
-	Order 		 *int                	`json:"order,omitempty"`
+	OutletID     *uuid.UUID             `json:"outlet_id,omitempty"`
+	Order        *int                   `json:"order,omitempty"`
 	Metadata     map[string]interface{} `json:"metadata,omitempty"`
 }
 
@@ -18,12 +19,14 @@ type UpdateCategoryRequest struct {
 	Name         *string                `json:"name,omitempty" validate:"omitempty,min=1,max=255"`
 	Description  *string                `json:"description,omitempty"`
 	BusinessType *string                `json:"business_type,omitempty"`
-	Order 		 *int                	`json:"order,omitempty"`
+	OutletID     *uuid.UUID             `json:"outlet_id,omitempty"`
+	Order        *int                   `json:"order,omitempty"`
 	Metadata     map[string]interface{} `json:"metadata,omitempty"`
 }
 
 type ListCategoriesRequest struct {
 	OrganizationID *uuid.UUID `json:"organization_id,omitempty"`
+	OutletID       *uuid.UUID `json:"outlet_id,omitempty"`
 	BusinessType   string     `json:"business_type,omitempty"`
 	Search         string     `json:"search,omitempty"`
 	Page           int        `json:"page" validate:"required,min=1"`
@@ -34,10 +37,11 @@ type ListCategoriesRequest struct {
 type CategoryResponse struct {
 	ID             uuid.UUID              `json:"id"`
 	OrganizationID uuid.UUID              `json:"organization_id"`
+	OutletID       *uuid.UUID             `json:"outlet_id"`
 	Name           string                 `json:"name"`
 	Description    *string                `json:"description"`
 	BusinessType   string                 `json:"business_type"`
-	Order 		   int                	  `json:"order"`
+	Order          int                    `json:"order"`
 	Metadata       map[string]interface{} `json:"metadata"`
 	CreatedAt      time.Time              `json:"created_at"`
 	UpdatedAt      time.Time              `json:"updated_at"`

internal/contract/expense_contract.go

@@ -0,0 +1,161 @@
+package contract
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+)
+
+type CreateExpenseRequest struct {
+	Receiver        string                     `json:"receiver" validate:"required"`
+	TransactionDate string                     `json:"transaction_date" validate:"required"`
+	CodeNumber      string                     `json:"code_number" validate:"required"`
+	OutletID        string                     `json:"outlet_id" validate:"required"`
+	Status          *string                    `json:"status,omitempty" validate:"omitempty,oneof=draft sent approved cancel"`
+	Description     *string                    `json:"description,omitempty"`
+	Tax             float64                    `json:"tax"`
+	Total           float64                    `json:"total" validate:"required"`
+	Items           []CreateExpenseItemRequest `json:"items" validate:"required"`
+}
+
+type CreateExpenseItemRequest struct {
+	ChartOfAccountID   string  `json:"chart_of_account_id" validate:"required"`
+	PurchaseCategoryID string  `json:"purchase_category_id" validate:"required"`
+	Item               string  `json:"item" validate:"required"`
+	Description        *string `json:"description,omitempty"`
+	Amount             float64 `json:"amount" validate:"required"`
+}
+
+type UpdateExpenseRequest struct {
+	Receiver        *string                    `json:"receiver,omitempty"`
+	TransactionDate *string                    `json:"transaction_date,omitempty"`
+	CodeNumber      *string                    `json:"code_number,omitempty"`
+	OutletID        *string                    `json:"outlet_id,omitempty"`
+	Status          *string                    `json:"status,omitempty" validate:"omitempty,oneof=draft sent approved cancel"`
+	Description     *string                    `json:"description,omitempty"`
+	Tax             *float64                   `json:"tax,omitempty"`
+	Total           *float64                   `json:"total,omitempty"`
+	Reserved1       *string                    `json:"reserved1,omitempty"`
+	Items           []UpdateExpenseItemRequest `json:"items,omitempty"`
+}
+
+type UpdateExpenseItemRequest struct {
+	ChartOfAccountID   *string  `json:"chart_of_account_id,omitempty"`
+	PurchaseCategoryID *string  `json:"purchase_category_id,omitempty"`
+	Item               *string  `json:"item,omitempty"`
+	Description        *string  `json:"description,omitempty"`
+	Amount             *float64 `json:"amount,omitempty"`
+}
+
+type ExpenseResponse struct {
+	ID              uuid.UUID             `json:"id"`
+	OrganizationID  uuid.UUID             `json:"organization_id"`
+	OutletID        uuid.UUID             `json:"outlet_id"`
+	Receiver        string                `json:"receiver"`
+	TransactionDate time.Time             `json:"transaction_date"`
+	CodeNumber      string                `json:"code_number"`
+	Status          string                `json:"status"`
+	Description     *string               `json:"description"`
+	Tax             float64               `json:"tax"`
+	Total           float64               `json:"total"`
+	Reserved1       *string               `json:"reserved1,omitempty"`
+	CreatedAt       time.Time             `json:"created_at"`
+	UpdatedAt       time.Time             `json:"updated_at"`
+	Items           []ExpenseItemResponse `json:"items,omitempty"`
+}
+
+type ExpenseItemResponse struct {
+	ID                   uuid.UUID                 `json:"id"`
+	ExpenseID            uuid.UUID                 `json:"expense_id"`
+	ChartOfAccountID     uuid.UUID                 `json:"chart_of_account_id"`
+	ChartOfAccountName   string                    `json:"chart_of_account_name,omitempty"`
+	PurchaseCategoryID   uuid.UUID                 `json:"purchase_category_id"`
+	PurchaseCategoryName string                    `json:"purchase_category_name,omitempty"`
+	PurchaseCategoryType string                    `json:"purchase_category_type,omitempty"`
+	PurchaseCategory     *PurchaseCategoryResponse `json:"purchase_category,omitempty"`
+	Item                 string                    `json:"item"`
+	Description          *string                   `json:"description"`
+	Amount               float64                   `json:"amount"`
+	CreatedAt            time.Time                 `json:"created_at"`
+	UpdatedAt            time.Time                 `json:"updated_at"`
+}
+
+type ListExpenseRequest struct {
+	Page      int    `json:"page" validate:"min=1"`
+	Limit     int    `json:"limit" validate:"min=1,max=100"`
+	Search    string `json:"search,omitempty"`
+	OutletID  string `json:"outlet_id,omitempty"`
+	Status    string `json:"status,omitempty" validate:"omitempty,oneof=draft sent approved cancel"`
+	StartDate string `json:"start_date,omitempty"`
+	EndDate   string `json:"end_date,omitempty"`
+}
+
+type ListExpenseResponse struct {
+	Expenses   []ExpenseResponse `json:"expenses"`
+	TotalCount int               `json:"total_count"`
+	Page       int               `json:"page"`
+	Limit      int               `json:"limit"`
+	TotalPages int               `json:"total_pages"`
+}
+
+type ExpenseAnalyticsRequest struct {
+	OutletID *string `form:"outlet_id,omitempty"`
+	DateFrom string  `form:"date_from" validate:"required"`
+	DateTo   string  `form:"date_to" validate:"required"`
+	GroupBy  string  `form:"group_by,default=day" validate:"omitempty,oneof=day hour week month"`
+}
+
+type ExpenseAnalyticsResponse struct {
+	OrganizationID     uuid.UUID                            `json:"organization_id"`
+	OutletID           *uuid.UUID                           `json:"outlet_id,omitempty"`
+	DateFrom           time.Time                            `json:"date_from"`
+	DateTo             time.Time                            `json:"date_to"`
+	GroupBy            string                               `json:"group_by"`
+	Summary            ExpenseAnalyticsSummary              `json:"summary"`
+	Data               []ExpenseAnalyticsData               `json:"data"`
+	CategoryData       []ExpenseAnalyticsCategoryData       `json:"category_data"`
+	ChartOfAccountData []ExpenseAnalyticsChartOfAccountData `json:"chart_of_account_data"`
+	ItemData           []ExpenseAnalyticsItemData           `json:"item_data"`
+}
+
+type ExpenseAnalyticsSummary struct {
+	TotalExpenses       float64 `json:"total_expenses"`
+	TotalExpenseCount   int64   `json:"total_expense_count"`
+	TotalTax            float64 `json:"total_tax"`
+	AverageExpenseValue float64 `json:"average_expense_value"`
+	TotalCategories     int64   `json:"total_categories"`
+	TotalItems          int64   `json:"total_items"`
+}
+
+type ExpenseAnalyticsData struct {
+	Date         time.Time `json:"date"`
+	Expenses     float64   `json:"expenses"`
+	ExpenseCount int64     `json:"expense_count"`
+	Tax          float64   `json:"tax"`
+	Items        int64     `json:"items"`
+	Categories   int64     `json:"categories"`
+}
+
+type ExpenseAnalyticsCategoryData struct {
+	PurchaseCategoryID   uuid.UUID `json:"purchase_category_id"`
+	PurchaseCategoryName string    `json:"purchase_category_name"`
+	PurchaseCategoryType string    `json:"purchase_category_type"`
+	TotalAmount          float64   `json:"total_amount"`
+	ExpenseCount         int64     `json:"expense_count"`
+	ItemCount            int64     `json:"item_count"`
+}
+
+type ExpenseAnalyticsChartOfAccountData struct {
+	ChartOfAccountID   uuid.UUID `json:"chart_of_account_id"`
+	ChartOfAccountName string    `json:"chart_of_account_name"`
+	TotalAmount        float64   `json:"total_amount"`
+	ExpenseCount       int64     `json:"expense_count"`
+	ItemCount          int64     `json:"item_count"`
+}
+
+type ExpenseAnalyticsItemData struct {
+	Item         string  `json:"item"`
+	TotalAmount  float64 `json:"total_amount"`
+	ExpenseCount int64   `json:"expense_count"`
+	ItemCount    int64   `json:"item_count"`
+}

internal/contract/ingredient_unit_converter_contract.go

@@ -81,4 +81,3 @@ type IngredientUnitsResponse struct {
 	BaseUnitName   string          `json:"base_unit_name"`
 	Units          []*UnitResponse `json:"units"`
 }
-

internal/contract/inventory_contract.go

@@ -26,9 +26,9 @@ type AdjustInventoryRequest struct {
 }
 
 type RestockInventoryRequest struct {
-	OutletID uuid.UUID `json:"outlet_id" validate:"required"`
+	OutletID uuid.UUID     `json:"outlet_id" validate:"required"`
 	Items    []RestockItem `json:"items" validate:"required,min=1,dive"`
-	Reason   string    `json:"reason" validate:"required,min=1,max=255"`
+	Reason   string        `json:"reason" validate:"required,min=1,max=255"`
 }
 
 type RestockItem struct {
@@ -82,10 +82,10 @@ type InventoryAdjustmentResponse struct {
 }
 
 type RestockInventoryResponse struct {
-	OutletID uuid.UUID `json:"outlet_id"`
-	Items    []RestockItemResult `json:"items"`
-	Reason   string    `json:"reason"`
-	RestockedAt time.Time `json:"restocked_at"`
+	OutletID    uuid.UUID           `json:"outlet_id"`
+	Items       []RestockItemResult `json:"items"`
+	Reason      string              `json:"reason"`
+	RestockedAt time.Time           `json:"restocked_at"`
 }
 
 type RestockItemResult struct {

internal/contract/order_contract.go

@@ -98,6 +98,8 @@ type OrderItemResponse struct {
 	ProductName        string                   `json:"product_name"`
 	ProductVariantID   *uuid.UUID               `json:"product_variant_id"`
 	ProductVariantName *string                  `json:"product_variant_name,omitempty"`
+	CategoryID         *uuid.UUID               `json:"category_id,omitempty"`
+	CategoryName       *string                  `json:"category_name,omitempty"`
 	Quantity           int                      `json:"quantity"`
 	UnitPrice          float64                  `json:"unit_price"`
 	TotalPrice         float64                  `json:"total_price"`
@@ -108,6 +110,7 @@ type OrderItemResponse struct {
 	CreatedAt          time.Time                `json:"created_at"`
 	UpdatedAt          time.Time                `json:"updated_at"`
 	PrinterType        string                   `json:"printer_type"`
+	PrintToChecker     bool                     `json:"print_to_checker"`
 	PaidQuantity       int                      `json:"paid_quantity"`
 }
 

internal/contract/product_contract.go

@@ -8,6 +8,7 @@ import (
 
 type CreateProductRequest struct {
 	CategoryID      uuid.UUID                     `json:"category_id" validate:"required"`
+	OutletID        *uuid.UUID                    `json:"outlet_id,omitempty"`
 	SKU             *string                       `json:"sku,omitempty"`
 	Name            string                        `json:"name" validate:"required,min=1,max=255"`
 	Description     *string                       `json:"description,omitempty"`
@@ -16,28 +17,30 @@ type CreateProductRequest struct {
 	BusinessType    *string                       `json:"business_type,omitempty"`
 	ImageURL        *string                       `json:"image_url,omitempty" validate:"omitempty,max=500"`
 	PrinterType     *string                       `json:"printer_type,omitempty" validate:"omitempty,max=50"`
+	PrintToChecker  *bool                         `json:"print_to_checker,omitempty"`
 	Metadata        map[string]interface{}        `json:"metadata,omitempty"`
 	IsActive        *bool                         `json:"is_active,omitempty"`
 	Variants        []CreateProductVariantRequest `json:"variants,omitempty"`
-	InitialStock    *int                          `json:"initial_stock,omitempty" validate:"omitempty,min=0"` // Initial stock quantity for all outlets
-	ReorderLevel    *int                          `json:"reorder_level,omitempty" validate:"omitempty,min=0"` // Reorder level for all outlets
-	CreateInventory bool                          `json:"create_inventory,omitempty"`                         // Whether to create inventory records for all outlets
+	InitialStock    *int                          `json:"initial_stock,omitempty" validate:"omitempty,min=0"`
+	ReorderLevel    *int                          `json:"reorder_level,omitempty" validate:"omitempty,min=0"`
+	CreateInventory bool                          `json:"create_inventory,omitempty"`
 }
 
 type UpdateProductRequest struct {
-	CategoryID   *uuid.UUID             `json:"category_id,omitempty"`
-	SKU          *string                `json:"sku,omitempty"`
-	Name         *string                `json:"name,omitempty" validate:"omitempty,min=1,max=255"`
-	Description  *string                `json:"description,omitempty"`
-	Price        *float64               `json:"price,omitempty" validate:"omitempty,min=0"`
-	Cost         *float64               `json:"cost,omitempty" validate:"omitempty,min=0"`
-	BusinessType *string                `json:"business_type,omitempty"`
-	ImageURL     *string                `json:"image_url,omitempty" validate:"omitempty,max=500"`
-	PrinterType  *string                `json:"printer_type,omitempty" validate:"omitempty,max=50"`
-	Metadata     map[string]interface{} `json:"metadata,omitempty"`
-	IsActive     *bool                  `json:"is_active,omitempty"`
-	// Stock management fields
-	ReorderLevel *int `json:"reorder_level,omitempty" validate:"omitempty,min=0"` // Update reorder level for all existing inventory records
+	OutletID       *uuid.UUID             `json:"outlet_id,omitempty"`
+	CategoryID     *uuid.UUID             `json:"category_id,omitempty"`
+	SKU            *string                `json:"sku,omitempty"`
+	Name           *string                `json:"name,omitempty" validate:"omitempty,min=1,max=255"`
+	Description    *string                `json:"description,omitempty"`
+	Price          *float64               `json:"price,omitempty" validate:"omitempty,min=0"`
+	Cost           *float64               `json:"cost,omitempty" validate:"omitempty,min=0"`
+	BusinessType   *string                `json:"business_type,omitempty"`
+	ImageURL       *string                `json:"image_url,omitempty" validate:"omitempty,max=500"`
+	PrinterType    *string                `json:"printer_type,omitempty" validate:"omitempty,max=50"`
+	PrintToChecker *bool                  `json:"print_to_checker,omitempty"`
+	Metadata       map[string]interface{} `json:"metadata,omitempty"`
+	IsActive       *bool                  `json:"is_active,omitempty"`
+	ReorderLevel   *int                   `json:"reorder_level,omitempty" validate:"omitempty,min=0"`
 }
 
 type CreateProductVariantRequest struct {
@@ -70,6 +73,7 @@ type ProductResponse struct {
 	BusinessType   string                       `json:"business_type"`
 	ImageURL       *string                      `json:"image_url"`
 	PrinterType    string                       `json:"printer_type"`
+	PrintToChecker bool                         `json:"print_to_checker"`
 	Metadata       map[string]interface{}       `json:"metadata"`
 	IsActive       bool                         `json:"is_active"`
 	CreatedAt      time.Time                    `json:"created_at"`

internal/contract/product_outlet_price_contract.go

@@ -7,23 +7,26 @@ import (
 )
 
 type CreateProductOutletPriceRequest struct {
-	ProductID uuid.UUID `json:"product_id" validate:"required"`
-	OutletID  uuid.UUID `json:"outlet_id" validate:"required"`
-	Price     float64   `json:"price" validate:"required,min=0"`
+	ProductID      uuid.UUID `json:"product_id" validate:"required"`
+	OutletID       uuid.UUID `json:"outlet_id" validate:"required"`
+	Price          float64   `json:"price" validate:"required,min=0"`
+	PrintToChecker bool      `json:"print_to_checker"`
 }
 
 type UpdateProductOutletPriceRequest struct {
-	Price float64 `json:"price" validate:"required,min=0"`
+	Price          float64 `json:"price" validate:"required,min=0"`
+	PrintToChecker *bool   `json:"print_to_checker"`
 }
 
 type ProductOutletPriceResponse struct {
-	ID         uuid.UUID `json:"id,omitempty"`
-	ProductID  uuid.UUID `json:"product_id,omitempty"`
-	OutletID   uuid.UUID `json:"outlet_id"`
-	OutletName string    `json:"outlet_name,omitempty"`
-	Price      float64   `json:"price"`
-	CreatedAt  time.Time `json:"created_at,omitempty"`
-	UpdatedAt  time.Time `json:"updated_at,omitempty"`
+	ID             uuid.UUID `json:"id,omitempty"`
+	ProductID      uuid.UUID `json:"product_id,omitempty"`
+	OutletID       uuid.UUID `json:"outlet_id"`
+	OutletName     string    `json:"outlet_name,omitempty"`
+	Price          float64   `json:"price"`
+	PrintToChecker bool      `json:"print_to_checker"`
+	CreatedAt      time.Time `json:"created_at,omitempty"`
+	UpdatedAt      time.Time `json:"updated_at,omitempty"`
 }
 
 type ListProductOutletPricesResponse struct {
@@ -37,6 +40,7 @@ type BulkCreateProductOutletPriceRequest struct {
 }
 
 type CreateProductOutletPricePerOutletRequest struct {
-	OutletID uuid.UUID `json:"outlet_id" validate:"required"`
-	Price    float64   `json:"price" validate:"required,min=0"`
+	OutletID       uuid.UUID `json:"outlet_id" validate:"required"`
+	Price          float64   `json:"price" validate:"required,min=0"`
+	PrintToChecker bool      `json:"print_to_checker"`
 }

internal/contract/product_recipe_contract.go

@@ -34,34 +34,34 @@ type BulkCreateProductRecipeRequest struct {
 
 // Response structures
 type ProductRecipeResponse struct {
-	ID              uuid.UUID                      `json:"id"`
-	OrganizationID  uuid.UUID                      `json:"organization_id"`
-	OutletID        *uuid.UUID                     `json:"outlet_id"`
-	ProductID       uuid.UUID                      `json:"product_id"`
-	VariantID       *uuid.UUID                     `json:"variant_id"`
-	IngredientID    uuid.UUID                      `json:"ingredient_id"`
-	Quantity        float64                        `json:"quantity"`
-	WastePercentage float64                        `json:"waste_percentage"`
-	CreatedAt       time.Time                      `json:"created_at"`
-	UpdatedAt       time.Time                      `json:"updated_at"`
-	Product         *ProductResponse               `json:"product,omitempty"`
-	ProductVariant  *ProductVariantResponse        `json:"product_variant,omitempty"`
+	ID              uuid.UUID                        `json:"id"`
+	OrganizationID  uuid.UUID                        `json:"organization_id"`
+	OutletID        *uuid.UUID                       `json:"outlet_id"`
+	ProductID       uuid.UUID                        `json:"product_id"`
+	VariantID       *uuid.UUID                       `json:"variant_id"`
+	IngredientID    uuid.UUID                        `json:"ingredient_id"`
+	Quantity        float64                          `json:"quantity"`
+	WastePercentage float64                          `json:"waste_percentage"`
+	CreatedAt       time.Time                        `json:"created_at"`
+	UpdatedAt       time.Time                        `json:"updated_at"`
+	Product         *ProductResponse                 `json:"product,omitempty"`
+	ProductVariant  *ProductVariantResponse          `json:"product_variant,omitempty"`
 	Ingredient      *ProductRecipeIngredientResponse `json:"ingredient,omitempty"`
 }
 
 type ProductRecipeIngredientResponse struct {
-	ID             uuid.UUID                 `json:"id"`
-	OrganizationID uuid.UUID                 `json:"organization_id"`
-	OutletID       *uuid.UUID                `json:"outlet_id"`
-	Name           string                    `json:"name"`
-	UnitID         uuid.UUID                 `json:"unit_id"`
-	Cost           float64                   `json:"cost"`
-	Stock          float64                   `json:"stock"`
-	IsSemiFinished bool                      `json:"is_semi_finished"`
-	IsActive       bool                      `json:"is_active"`
-	Metadata       map[string]interface{}    `json:"metadata"`
-	CreatedAt      time.Time                 `json:"created_at"`
-	UpdatedAt      time.Time                 `json:"updated_at"`
+	ID             uuid.UUID                  `json:"id"`
+	OrganizationID uuid.UUID                  `json:"organization_id"`
+	OutletID       *uuid.UUID                 `json:"outlet_id"`
+	Name           string                     `json:"name"`
+	UnitID         uuid.UUID                  `json:"unit_id"`
+	Cost           float64                    `json:"cost"`
+	Stock          float64                    `json:"stock"`
+	IsSemiFinished bool                       `json:"is_semi_finished"`
+	IsActive       bool                       `json:"is_active"`
+	Metadata       map[string]interface{}     `json:"metadata"`
+	CreatedAt      time.Time                  `json:"created_at"`
+	UpdatedAt      time.Time                  `json:"updated_at"`
 	Unit           *ProductRecipeUnitResponse `json:"unit,omitempty"`
 }
 
@@ -71,4 +71,4 @@ type ProductRecipeUnitResponse struct {
 	Symbol    string    `json:"symbol"`
 	CreatedAt time.Time `json:"created_at"`
 	UpdatedAt time.Time `json:"updated_at"`
-}
+}

internal/contract/purchase_category_contract.go

@@ -0,0 +1,57 @@
+package contract
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+)
+
+type CreatePurchaseCategoryRequest struct {
+	ParentID  *uuid.UUID `json:"parent_id,omitempty"`
+	Code      *string    `json:"code,omitempty"`
+	Name      string     `json:"name" validate:"required,min=1,max=255"`
+	Type      string     `json:"type" validate:"required,oneof=raw_material expense"`
+	SortOrder *int       `json:"sort_order,omitempty"`
+	IsActive  *bool      `json:"is_active,omitempty"`
+}
+
+type UpdatePurchaseCategoryRequest struct {
+	ParentID  *uuid.UUID `json:"parent_id,omitempty"`
+	Code      *string    `json:"code,omitempty"`
+	Name      *string    `json:"name,omitempty" validate:"omitempty,min=1,max=255"`
+	Type      *string    `json:"type,omitempty" validate:"omitempty,oneof=raw_material expense"`
+	SortOrder *int       `json:"sort_order,omitempty"`
+	IsActive  *bool      `json:"is_active,omitempty"`
+}
+
+type ListPurchaseCategoriesRequest struct {
+	ParentID *uuid.UUID `json:"parent_id,omitempty"`
+	Type     string     `json:"type,omitempty" validate:"omitempty,oneof=raw_material expense"`
+	Search   string     `json:"search,omitempty"`
+	IsActive *bool      `json:"is_active,omitempty"`
+	Page     int        `json:"page" validate:"required,min=1"`
+	Limit    int        `json:"limit" validate:"required,min=1,max=100"`
+}
+
+type PurchaseCategoryResponse struct {
+	ID             uuid.UUID  `json:"id"`
+	OrganizationID uuid.UUID  `json:"organization_id"`
+	PresetID       *uuid.UUID `json:"preset_id"`
+	ParentID       *uuid.UUID `json:"parent_id"`
+	Code           string     `json:"code"`
+	Name           string     `json:"name"`
+	Type           string     `json:"type"`
+	SortOrder      int        `json:"sort_order"`
+	IsSystem       bool       `json:"is_system"`
+	IsActive       bool       `json:"is_active"`
+	CreatedAt      time.Time  `json:"created_at"`
+	UpdatedAt      time.Time  `json:"updated_at"`
+}
+
+type ListPurchaseCategoriesResponse struct {
+	PurchaseCategories []PurchaseCategoryResponse `json:"purchase_categories"`
+	TotalCount         int                        `json:"total_count"`
+	Page               int                        `json:"page"`
+	Limit              int                        `json:"limit"`
+	TotalPages         int                        `json:"total_pages"`
+}

internal/contract/purchase_order_contract.go

@@ -9,8 +9,8 @@ import (
 type CreatePurchaseOrderRequest struct {
 	VendorID          uuid.UUID                        `json:"vendor_id" validate:"required"`
 	PONumber          string                           `json:"po_number" validate:"required,min=1,max=50"`
-	TransactionDate   string                           `json:"transaction_date" validate:"required"` // Format: YYYY-MM-DD
-	DueDate           string                           `json:"due_date" validate:"required"`          // Format: YYYY-MM-DD
+	TransactionDate   string                           `json:"transaction_date" validate:"required"`    // Format: YYYY-MM-DD
+	DueDate           *string                          `json:"due_date,omitempty" validate:"omitempty"` // Format: YYYY-MM-DD
 	Reference         *string                          `json:"reference,omitempty" validate:"omitempty,max=100"`
 	Status            *string                          `json:"status,omitempty" validate:"omitempty,oneof=draft sent approved received cancelled"`
 	Message           *string                          `json:"message,omitempty" validate:"omitempty"`
@@ -19,18 +19,19 @@ type CreatePurchaseOrderRequest struct {
 }
 
 type CreatePurchaseOrderItemRequest struct {
-	IngredientID uuid.UUID `json:"ingredient_id" validate:"required"`
-	Description  *string   `json:"description,omitempty" validate:"omitempty"`
-	Quantity     float64   `json:"quantity" validate:"required,gt=0"`
-	UnitID       uuid.UUID `json:"unit_id" validate:"required"`
-	Amount       float64   `json:"amount" validate:"required,gte=0"`
+	IngredientID       *uuid.UUID `json:"ingredient_id,omitempty" validate:"omitempty"`
+	PurchaseCategoryID uuid.UUID  `json:"purchase_category_id" validate:"required"`
+	Description        *string    `json:"description,omitempty" validate:"omitempty"`
+	Quantity           *float64   `json:"quantity,omitempty" validate:"omitempty,gt=0"`
+	UnitID             *uuid.UUID `json:"unit_id,omitempty" validate:"omitempty"`
+	Amount             float64    `json:"amount" validate:"required,gte=0"`
 }
 
 type UpdatePurchaseOrderRequest struct {
 	VendorID          *uuid.UUID                       `json:"vendor_id,omitempty" validate:"omitempty"`
 	PONumber          *string                          `json:"po_number,omitempty" validate:"omitempty,min=1,max=50"`
 	TransactionDate   *string                          `json:"transaction_date,omitempty" validate:"omitempty"` // Format: YYYY-MM-DD
-	DueDate           *string                          `json:"due_date,omitempty" validate:"omitempty"`          // Format: YYYY-MM-DD
+	DueDate           *string                          `json:"due_date,omitempty" validate:"omitempty"`         // Format: YYYY-MM-DD
 	Reference         *string                          `json:"reference,omitempty" validate:"omitempty,max=100"`
 	Status            *string                          `json:"status,omitempty" validate:"omitempty,oneof=draft sent approved received cancelled"`
 	Message           *string                          `json:"message,omitempty" validate:"omitempty"`
@@ -39,12 +40,13 @@ type UpdatePurchaseOrderRequest struct {
 }
 
 type UpdatePurchaseOrderItemRequest struct {
-	ID           *uuid.UUID `json:"id,omitempty"` // For existing items
-	IngredientID *uuid.UUID `json:"ingredient_id,omitempty" validate:"omitempty"`
-	Description  *string    `json:"description,omitempty" validate:"omitempty"`
-	Quantity     *float64   `json:"quantity,omitempty" validate:"omitempty,gt=0"`
-	UnitID       *uuid.UUID `json:"unit_id,omitempty" validate:"omitempty"`
-	Amount       *float64   `json:"amount,omitempty" validate:"omitempty,gte=0"`
+	ID                 *uuid.UUID `json:"id,omitempty"` // For existing items
+	IngredientID       *uuid.UUID `json:"ingredient_id,omitempty" validate:"omitempty"`
+	PurchaseCategoryID *uuid.UUID `json:"purchase_category_id,omitempty" validate:"omitempty"`
+	Description        *string    `json:"description,omitempty" validate:"omitempty"`
+	Quantity           *float64   `json:"quantity,omitempty" validate:"omitempty,gt=0"`
+	UnitID             *uuid.UUID `json:"unit_id,omitempty" validate:"omitempty"`
+	Amount             *float64   `json:"amount,omitempty" validate:"omitempty,gte=0"`
 }
 
 type PurchaseOrderResponse struct {
@@ -53,7 +55,7 @@ type PurchaseOrderResponse struct {
 	VendorID        uuid.UUID                         `json:"vendor_id"`
 	PONumber        string                            `json:"po_number"`
 	TransactionDate time.Time                         `json:"transaction_date"`
-	DueDate         time.Time                         `json:"due_date"`
+	DueDate         *time.Time                        `json:"due_date"`
 	Reference       *string                           `json:"reference"`
 	Status          string                            `json:"status"`
 	Message         *string                           `json:"message"`
@@ -66,17 +68,19 @@ type PurchaseOrderResponse struct {
 }
 
 type PurchaseOrderItemResponse struct {
-	ID              uuid.UUID           `json:"id"`
-	PurchaseOrderID uuid.UUID           `json:"purchase_order_id"`
-	IngredientID    uuid.UUID           `json:"ingredient_id"`
-	Description     *string             `json:"description"`
-	Quantity        float64             `json:"quantity"`
-	UnitID          uuid.UUID           `json:"unit_id"`
-	Amount          float64             `json:"amount"`
-	CreatedAt       time.Time           `json:"created_at"`
-	UpdatedAt       time.Time           `json:"updated_at"`
-	Ingredient      *IngredientResponse `json:"ingredient,omitempty"`
-	Unit            *UnitResponse       `json:"unit,omitempty"`
+	ID                 uuid.UUID                 `json:"id"`
+	PurchaseOrderID    uuid.UUID                 `json:"purchase_order_id"`
+	IngredientID       *uuid.UUID                `json:"ingredient_id"`
+	PurchaseCategoryID uuid.UUID                 `json:"purchase_category_id"`
+	Description        *string                   `json:"description"`
+	Quantity           *float64                  `json:"quantity"`
+	UnitID             *uuid.UUID                `json:"unit_id"`
+	Amount             float64                   `json:"amount"`
+	CreatedAt          time.Time                 `json:"created_at"`
+	UpdatedAt          time.Time                 `json:"updated_at"`
+	Ingredient         *IngredientResponse       `json:"ingredient,omitempty"`
+	PurchaseCategory   *PurchaseCategoryResponse `json:"purchase_category,omitempty"`
+	Unit               *UnitResponse             `json:"unit,omitempty"`
 }
 
 type PurchaseOrderAttachmentResponse struct {

internal/entities/analytics.go

@@ -27,10 +27,64 @@ type SalesAnalytics struct {
 	NetSales float64   `json:"net_sales"`
 }
 
+// PurchasingAnalytics represents purchasing analytics data
+type PurchasingAnalytics struct {
+	OutletName     *string                    `json:"outlet_name,omitempty"`
+	Summary        PurchasingSummary          `json:"summary"`
+	Data           []PurchasingAnalyticsData  `json:"data"`
+	IngredientData []PurchasingIngredientData `json:"ingredient_data"`
+	VendorData     []PurchasingVendorData     `json:"vendor_data"`
+}
+
+type PurchasingSummary struct {
+	TotalPurchases            float64 `json:"total_purchases"`
+	RawMaterialPurchases      float64 `json:"raw_material_purchases"`
+	ExpensePurchases          float64 `json:"expense_purchases"`
+	TotalPurchaseOrders       int64   `json:"total_purchase_orders"`
+	RawMaterialPurchaseOrders int64   `json:"raw_material_purchase_orders"`
+	ExpenseCount              int64   `json:"expense_count"`
+	TotalQuantity             float64 `json:"total_quantity"`
+	AveragePurchaseOrderValue float64 `json:"average_purchase_order_value"`
+	TotalIngredients          int64   `json:"total_ingredients"`
+	TotalVendors              int64   `json:"total_vendors"`
+}
+
+type PurchasingAnalyticsData struct {
+	Date                      time.Time `json:"date"`
+	Purchases                 float64   `json:"purchases"`
+	RawMaterialPurchases      float64   `json:"raw_material_purchases"`
+	ExpensePurchases          float64   `json:"expense_purchases"`
+	PurchaseOrders            int64     `json:"purchase_orders"`
+	RawMaterialPurchaseOrders int64     `json:"raw_material_purchase_orders"`
+	ExpenseCount              int64     `json:"expense_count"`
+	Quantity                  float64   `json:"quantity"`
+	Ingredients               int64     `json:"ingredients"`
+	Vendors                   int64     `json:"vendors"`
+}
+
+type PurchasingIngredientData struct {
+	IngredientID       uuid.UUID `json:"ingredient_id"`
+	IngredientName     string    `json:"ingredient_name"`
+	Quantity           float64   `json:"quantity"`
+	TotalCost          float64   `json:"total_cost"`
+	AverageUnitCost    float64   `json:"average_unit_cost"`
+	PurchaseOrderCount int64     `json:"purchase_order_count"`
+}
+
+type PurchasingVendorData struct {
+	VendorID           uuid.UUID `json:"vendor_id"`
+	VendorName         string    `json:"vendor_name"`
+	TotalCost          float64   `json:"total_cost"`
+	PurchaseOrderCount int64     `json:"purchase_order_count"`
+	IngredientCount    int64     `json:"ingredient_count"`
+	Quantity           float64   `json:"quantity"`
+}
+
 type ProductAnalytics struct {
 	ProductID               uuid.UUID `json:"product_id"`
 	ProductName             string    `json:"product_name"`
 	ProductSku              string    `json:"product_sku"`
+	ProductPrice            float64   `json:"product_price"`
 	CategoryID              uuid.UUID `json:"category_id"`
 	CategoryName            string    `json:"category_name"`
 	CategoryOrder           int       `json:"category_order"`
@@ -68,54 +122,106 @@ type DashboardOverview struct {
 	RefundedOrders    int64   `json:"refunded_orders"`
 }
 
-// ProfitLossAnalytics represents profit and loss analytics data
 type ProfitLossAnalytics struct {
-	Summary     ProfitLossSummary   `json:"summary"`
-	Data        []ProfitLossData    `json:"data"`
-	ProductData []ProductProfitData `json:"product_data"`
+	Summary                 ProfitLossSummary
+	Data                    []ProfitLossData
+	ProductData             []ProductProfitData
+	TodayRevenue            float64
+	TodayCost               float64
+	MtdRevenue              float64
+	MtdCost                 float64
+	TodayExpenseByCategory  []ExpenseCategoryTotal
+	MtdExpenseByCategory    []ExpenseCategoryTotal
+	OperationalExpenseItems []OperationalExpenseItem
 }
 
-// ProfitLossSummary represents profit and loss summary data
 type ProfitLossSummary struct {
-	TotalRevenue       float64 `json:"total_revenue"`
-	TotalCost          float64 `json:"total_cost"`
-	GrossProfit        float64 `json:"gross_profit"`
-	GrossProfitMargin  float64 `json:"gross_profit_margin"`
-	TotalTax           float64 `json:"total_tax"`
-	TotalDiscount      float64 `json:"total_discount"`
-	NetProfit          float64 `json:"net_profit"`
-	NetProfitMargin    float64 `json:"net_profit_margin"`
-	TotalOrders        int64   `json:"total_orders"`
-	AverageProfit      float64 `json:"average_profit"`
-	ProfitabilityRatio float64 `json:"profitability_ratio"`
+	TotalRevenue       float64
+	TotalCost          float64
+	GrossProfit        float64
+	GrossProfitMargin  float64
+	TotalTax           float64
+	TotalDiscount      float64
+	NetProfit          float64
+	NetProfitMargin    float64
+	TotalOrders        int64
+	AverageProfit      float64
+	ProfitabilityRatio float64
 }
 
-// ProfitLossData represents profit and loss data by time period
 type ProfitLossData struct {
-	Date              time.Time `json:"date"`
-	Revenue           float64   `json:"revenue"`
-	Cost              float64   `json:"cost"`
-	GrossProfit       float64   `json:"gross_profit"`
-	GrossProfitMargin float64   `json:"gross_profit_margin"`
-	Tax               float64   `json:"tax"`
-	Discount          float64   `json:"discount"`
-	NetProfit         float64   `json:"net_profit"`
-	NetProfitMargin   float64   `json:"net_profit_margin"`
-	Orders            int64     `json:"orders"`
+	Date              time.Time
+	Revenue           float64
+	Cost              float64
+	GrossProfit       float64
+	GrossProfitMargin float64
+	Tax               float64
+	Discount          float64
+	NetProfit         float64
+	NetProfitMargin   float64
+	Orders            int64
 }
 
-// ProductProfitData represents profit data for individual products
 type ProductProfitData struct {
-	ProductID         uuid.UUID `json:"product_id"`
-	ProductName       string    `json:"product_name"`
-	CategoryID        uuid.UUID `json:"category_id"`
-	CategoryName      string    `json:"category_name"`
-	QuantitySold      int64     `json:"quantity_sold"`
-	Revenue           float64   `json:"revenue"`
-	Cost              float64   `json:"cost"`
-	GrossProfit       float64   `json:"gross_profit"`
-	GrossProfitMargin float64   `json:"gross_profit_margin"`
-	AveragePrice      float64   `json:"average_price"`
-	AverageCost       float64   `json:"average_cost"`
-	ProfitPerUnit     float64   `json:"profit_per_unit"`
+	ProductID         uuid.UUID
+	ProductName       string
+	CategoryID        uuid.UUID
+	CategoryName      string
+	QuantitySold      int64
+	Revenue           float64
+	Cost              float64
+	GrossProfit       float64
+	GrossProfitMargin float64
+	AveragePrice      float64
+	AverageCost       float64
+	ProfitPerUnit     float64
+}
+
+type ExpenseCategoryTotal struct {
+	CategoryName string
+	Amount       float64
+}
+
+type OperationalExpenseItem struct {
+	Item   string
+	Amount float64
+}
+
+type ExclusiveSummaryAnalytics struct {
+	SalesTotal                  float64
+	SalesCount                  int64
+	HPPBreakdown                []ExclusiveSummaryCategoryTotal
+	OperationalExpenseBreakdown []ExclusiveSummaryCategoryTotal
+	DailySummary                []ExclusiveSummaryDailySummary
+	DailyTransactions           []ExclusiveSummaryDailyTransaction
+}
+
+type ExclusiveSummaryCategoryTotal struct {
+	CategoryCode string
+	CategoryName string
+	Amount       float64
+}
+
+type ExclusiveSummaryDailySummary struct {
+	Date             time.Time
+	TransactionCount int64
+	TotalCost        float64
+}
+
+type ExclusiveSummaryDailyTransaction struct {
+	Date         time.Time
+	CategoryCode string
+	CategoryName string
+	Description  string
+	Amount       float64
+	Source       string
+}
+
+type ExclusiveSummaryBankBalance struct {
+	Bank             string
+	OpeningBalance   *float64
+	IncomingMutation *float64
+	OutgoingMutation *float64
+	ClosingBalance   *float64
+	Notes            *string
 }

internal/entities/category.go

@@ -31,15 +31,16 @@ func (m *Metadata) Scan(value interface{}) error {
 }
 
 type Category struct {
-	ID             uuid.UUID `gorm:"type:uuid;primary_key;default:gen_random_uuid()" json:"id"`
-	OrganizationID uuid.UUID `gorm:"type:uuid;not null;index" json:"organization_id" validate:"required"`
-	Name           string    `gorm:"not null;size:255" json:"name" validate:"required,min=1,max=255"`
-	Description    *string   `gorm:"type:text" json:"description"`
-	Order    	   int  	 `gorm:"default:0" json:"order"`
-	BusinessType   string    `gorm:"size:50;default:'restaurant'" json:"business_type"`
-	Metadata       Metadata  `gorm:"type:jsonb;default:'{}'" json:"metadata"`
-	CreatedAt      time.Time `gorm:"autoCreateTime" json:"created_at"`
-	UpdatedAt      time.Time `gorm:"autoUpdateTime" json:"updated_at"`
+	ID             uuid.UUID  `gorm:"type:uuid;primary_key;default:gen_random_uuid()" json:"id"`
+	OrganizationID uuid.UUID  `gorm:"type:uuid;not null;index" json:"organization_id" validate:"required"`
+	OutletID       *uuid.UUID `gorm:"type:uuid;index" json:"outlet_id"`
+	Name           string     `gorm:"not null;size:255" json:"name" validate:"required,min=1,max=255"`
+	Description    *string    `gorm:"type:text" json:"description"`
+	Order          int        `gorm:"default:0" json:"order"`
+	BusinessType   string     `gorm:"size:50;default:'restaurant'" json:"business_type"`
+	Metadata       Metadata   `gorm:"type:jsonb;default:'{}'" json:"metadata"`
+	CreatedAt      time.Time  `gorm:"autoCreateTime" json:"created_at"`
+	UpdatedAt      time.Time  `gorm:"autoUpdateTime" json:"updated_at"`
 
 	Organization Organization `gorm:"foreignKey:OrganizationID" json:"organization,omitempty"`
 	Products     []Product    `gorm:"foreignKey:CategoryID" json:"products,omitempty"`

internal/entities/entities.go

@@ -42,6 +42,7 @@ func GetAllEntities() []interface{} {
 		&NotificationReceiver{},
 		&NotificationDelivery{},
 		&ProductOutletPrice{},
+		&Expense{},
 	}
 }
 

internal/entities/expense.go

@@ -0,0 +1,90 @@
+package entities
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+
+	"gorm.io/gorm"
+)
+
+type Expense struct {
+	ID              uuid.UUID `gorm:"type:uuid;primary_key;default:gen_random_uuid()" json:"id"`
+	OrganizationID  uuid.UUID `gorm:"type:uuid;not null;index" json:"organization_id"`
+	OutletID        uuid.UUID `gorm:"type:uuid;not null;index" json:"outlet_id"`
+	Receiver        string    `gorm:"not null;size:255" json:"receiver"`
+	TransactionDate time.Time `gorm:"type:date;not null" json:"transaction_date"`
+	CodeNumber      string    `gorm:"not null;size:50" json:"code_number"`
+	Status          string    `gorm:"not null;size:20;default:'draft'" json:"status"`
+	Description     *string   `gorm:"type:text" json:"description"`
+	Tax             float64   `gorm:"type:decimal(15,2);not null;default:0" json:"tax"`
+	Total           float64   `gorm:"type:decimal(15,2);not null;default:0" json:"total"`
+	Reserved1       *string   `gorm:"type:text" json:"reserved1"`
+	CreatedAt       time.Time `gorm:"autoCreateTime" json:"created_at"`
+	UpdatedAt       time.Time `gorm:"autoUpdateTime" json:"updated_at"`
+
+	Organization *Organization `gorm:"foreignKey:OrganizationID" json:"organization,omitempty"`
+	Outlet       *Outlet       `gorm:"foreignKey:OutletID" json:"outlet,omitempty"`
+	Items        []ExpenseItem `gorm:"foreignKey:ExpenseID" json:"items,omitempty"`
+}
+
+type ExpenseAnalytics struct {
+	Summary            ExpenseAnalyticsSummary
+	Data               []ExpenseAnalyticsData
+	CategoryData       []ExpenseAnalyticsCategoryData
+	ChartOfAccountData []ExpenseAnalyticsChartOfAccountData
+	ItemData           []ExpenseAnalyticsItemData
+}
+
+type ExpenseAnalyticsSummary struct {
+	TotalExpenses       float64
+	TotalExpenseCount   int64
+	TotalTax            float64
+	AverageExpenseValue float64
+	TotalCategories     int64
+	TotalItems          int64
+}
+
+type ExpenseAnalyticsData struct {
+	Date         time.Time
+	Expenses     float64
+	ExpenseCount int64
+	Tax          float64
+	Items        int64
+	Categories   int64
+}
+
+type ExpenseAnalyticsCategoryData struct {
+	PurchaseCategoryID   uuid.UUID
+	PurchaseCategoryName string
+	PurchaseCategoryType string
+	TotalAmount          float64
+	ExpenseCount         int64
+	ItemCount            int64
+}
+
+type ExpenseAnalyticsChartOfAccountData struct {
+	ChartOfAccountID   uuid.UUID
+	ChartOfAccountName string
+	TotalAmount        float64
+	ExpenseCount       int64
+	ItemCount          int64
+}
+
+type ExpenseAnalyticsItemData struct {
+	Item         string
+	TotalAmount  float64
+	ExpenseCount int64
+	ItemCount    int64
+}
+
+func (e *Expense) BeforeCreate(tx *gorm.DB) error {
+	if e.ID == uuid.Nil {
+		e.ID = uuid.New()
+	}
+	return nil
+}
+
+func (Expense) TableName() string {
+	return "expenses"
+}

internal/entities/expense_item.go

@@ -0,0 +1,36 @@
+package entities
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+
+	"gorm.io/gorm"
+)
+
+type ExpenseItem struct {
+	ID                 uuid.UUID `gorm:"type:uuid;primary_key;default:gen_random_uuid()" json:"id"`
+	ExpenseID          uuid.UUID `gorm:"type:uuid;not null;index" json:"expense_id"`
+	ChartOfAccountID   uuid.UUID `gorm:"type:uuid;not null;index" json:"chart_of_account_id"`
+	PurchaseCategoryID uuid.UUID `gorm:"type:uuid;not null;index" json:"purchase_category_id"`
+	Item               string    `gorm:"not null;size:255" json:"item"`
+	Description        *string   `gorm:"type:text" json:"description"`
+	Amount             float64   `gorm:"type:decimal(15,2);not null;default:0" json:"amount"`
+	CreatedAt          time.Time `gorm:"autoCreateTime" json:"created_at"`
+	UpdatedAt          time.Time `gorm:"autoUpdateTime" json:"updated_at"`
+
+	Expense          *Expense          `gorm:"foreignKey:ExpenseID" json:"expense,omitempty"`
+	ChartOfAccount   *ChartOfAccount   `gorm:"foreignKey:ChartOfAccountID" json:"chart_of_account,omitempty"`
+	PurchaseCategory *PurchaseCategory `gorm:"foreignKey:PurchaseCategoryID" json:"purchase_category,omitempty"`
+}
+
+func (e *ExpenseItem) BeforeCreate(tx *gorm.DB) error {
+	if e.ID == uuid.Nil {
+		e.ID = uuid.New()
+	}
+	return nil
+}
+
+func (ExpenseItem) TableName() string {
+	return "expense_items"
+}

internal/entities/ingredient_unit_converter.go

@@ -39,4 +39,3 @@ func (iuc *IngredientUnitConverter) BeforeCreate() error {
 	}
 	return nil
 }
-

internal/entities/inventory_movement.go

@@ -36,34 +36,36 @@ const (
 )
 
 type InventoryMovement struct {
-	ID               uuid.UUID                       `gorm:"type:uuid;primary_key;default:gen_random_uuid()" json:"id"`
-	OrganizationID   uuid.UUID                       `gorm:"type:uuid;not null;index" json:"organization_id" validate:"required"`
-	OutletID         uuid.UUID                       `gorm:"type:uuid;not null;index" json:"outlet_id" validate:"required"`
-	ItemID           uuid.UUID                       `gorm:"type:uuid;not null;index" json:"item_id" validate:"required"`
-	ItemType         string                          `gorm:"not null;size:20" json:"item_type" validate:"required"` // "PRODUCT" or "INGREDIENT"
-	MovementType     InventoryMovementType           `gorm:"not null;size:50" json:"movement_type" validate:"required"`
-	Quantity         float64                         `gorm:"type:decimal(12,3);not null" json:"quantity" validate:"required"`
-	PreviousQuantity float64                         `gorm:"type:decimal(12,3)" json:"previous_quantity"`
-	NewQuantity      float64                         `gorm:"type:decimal(12,3)" json:"new_quantity"`
-	UnitCost         float64                         `gorm:"type:decimal(12,2);default:0.00" json:"unit_cost"`
-	TotalCost        float64                         `gorm:"type:decimal(12,2);default:0.00" json:"total_cost"`
-	ReferenceType    *InventoryMovementReferenceType `gorm:"size:50" json:"reference_type"`
-	ReferenceID      *uuid.UUID                      `gorm:"type:uuid;index" json:"reference_id"`
-	OrderID          *uuid.UUID                      `gorm:"type:uuid;index" json:"order_id"`
-	PaymentID        *uuid.UUID                      `gorm:"type:uuid;index" json:"payment_id"`
-	UserID           uuid.UUID                       `gorm:"type:uuid;not null;index" json:"user_id" validate:"required"`
-	Reason           *string                         `gorm:"size:255" json:"reason"`
-	Notes            *string                         `gorm:"type:text" json:"notes"`
-	Metadata         Metadata                        `gorm:"type:jsonb;default:'{}'" json:"metadata"`
-	CreatedAt        time.Time                       `gorm:"autoCreateTime" json:"created_at"`
+	ID                  uuid.UUID                       `gorm:"type:uuid;primary_key;default:gen_random_uuid()" json:"id"`
+	OrganizationID      uuid.UUID                       `gorm:"type:uuid;not null;index" json:"organization_id" validate:"required"`
+	OutletID            uuid.UUID                       `gorm:"type:uuid;not null;index" json:"outlet_id" validate:"required"`
+	ItemID              uuid.UUID                       `gorm:"type:uuid;not null;index" json:"item_id" validate:"required"`
+	ItemType            string                          `gorm:"not null;size:20" json:"item_type" validate:"required"` // "PRODUCT" or "INGREDIENT"
+	MovementType        InventoryMovementType           `gorm:"not null;size:50" json:"movement_type" validate:"required"`
+	Quantity            float64                         `gorm:"type:decimal(12,3);not null" json:"quantity" validate:"required"`
+	PreviousQuantity    float64                         `gorm:"type:decimal(12,3)" json:"previous_quantity"`
+	NewQuantity         float64                         `gorm:"type:decimal(12,3)" json:"new_quantity"`
+	UnitCost            float64                         `gorm:"type:decimal(12,2);default:0.00" json:"unit_cost"`
+	TotalCost           float64                         `gorm:"type:decimal(12,2);default:0.00" json:"total_cost"`
+	ReferenceType       *InventoryMovementReferenceType `gorm:"size:50" json:"reference_type"`
+	ReferenceID         *uuid.UUID                      `gorm:"type:uuid;index" json:"reference_id"`
+	PurchaseOrderItemID *uuid.UUID                      `gorm:"type:uuid;index" json:"purchase_order_item_id"`
+	OrderID             *uuid.UUID                      `gorm:"type:uuid;index" json:"order_id"`
+	PaymentID           *uuid.UUID                      `gorm:"type:uuid;index" json:"payment_id"`
+	UserID              uuid.UUID                       `gorm:"type:uuid;not null;index" json:"user_id" validate:"required"`
+	Reason              *string                         `gorm:"size:255" json:"reason"`
+	Notes               *string                         `gorm:"type:text" json:"notes"`
+	Metadata            Metadata                        `gorm:"type:jsonb;default:'{}'" json:"metadata"`
+	CreatedAt           time.Time                       `gorm:"autoCreateTime" json:"created_at"`
 
-	Organization Organization `gorm:"foreignKey:OrganizationID" json:"organization,omitempty"`
-	Outlet       Outlet       `gorm:"foreignKey:OutletID" json:"outlet,omitempty"`
-	Product      *Product     `gorm:"foreignKey:ItemID" json:"product,omitempty"`
-	Ingredient   *Ingredient  `gorm:"foreignKey:ItemID" json:"ingredient,omitempty"`
-	Order        *Order       `gorm:"foreignKey:OrderID" json:"order,omitempty"`
-	Payment      *Payment     `gorm:"foreignKey:PaymentID" json:"payment,omitempty"`
-	User         User         `gorm:"foreignKey:UserID" json:"user,omitempty"`
+	Organization      Organization       `gorm:"foreignKey:OrganizationID" json:"organization,omitempty"`
+	Outlet            Outlet             `gorm:"foreignKey:OutletID" json:"outlet,omitempty"`
+	Product           *Product           `gorm:"foreignKey:ItemID" json:"product,omitempty"`
+	Ingredient        *Ingredient        `gorm:"foreignKey:ItemID" json:"ingredient,omitempty"`
+	PurchaseOrderItem *PurchaseOrderItem `gorm:"foreignKey:PurchaseOrderItemID" json:"purchase_order_item,omitempty"`
+	Order             *Order             `gorm:"foreignKey:OrderID" json:"order,omitempty"`
+	Payment           *Payment           `gorm:"foreignKey:PaymentID" json:"payment,omitempty"`
+	User              User               `gorm:"foreignKey:UserID" json:"user,omitempty"`
 }
 
 func (im *InventoryMovement) BeforeCreate(tx *gorm.DB) error {

internal/entities/order_ingredient_transaction.go

@@ -26,14 +26,14 @@ type OrderIngredientTransaction struct {
 	UpdatedAt        time.Time  `gorm:"autoUpdateTime" json:"updated_at"`
 
 	// Relations
-	Organization   Organization   `gorm:"foreignKey:OrganizationID" json:"organization,omitempty"`
-	Outlet         *Outlet        `gorm:"foreignKey:OutletID" json:"outlet,omitempty"`
-	Order          Order          `gorm:"foreignKey:OrderID" json:"order,omitempty"`
-	OrderItem      *OrderItem     `gorm:"foreignKey:OrderItemID" json:"order_item,omitempty"`
-	Product        Product        `gorm:"foreignKey:ProductID" json:"product,omitempty"`
+	Organization   Organization    `gorm:"foreignKey:OrganizationID" json:"organization,omitempty"`
+	Outlet         *Outlet         `gorm:"foreignKey:OutletID" json:"outlet,omitempty"`
+	Order          Order           `gorm:"foreignKey:OrderID" json:"order,omitempty"`
+	OrderItem      *OrderItem      `gorm:"foreignKey:OrderItemID" json:"order_item,omitempty"`
+	Product        Product         `gorm:"foreignKey:ProductID" json:"product,omitempty"`
 	ProductVariant *ProductVariant `gorm:"foreignKey:ProductVariantID" json:"product_variant,omitempty"`
-	Ingredient     Ingredient     `gorm:"foreignKey:IngredientID" json:"ingredient,omitempty"`
-	CreatedByUser  User           `gorm:"foreignKey:CreatedBy" json:"created_by_user,omitempty"`
+	Ingredient     Ingredient      `gorm:"foreignKey:IngredientID" json:"ingredient,omitempty"`
+	CreatedByUser  User            `gorm:"foreignKey:CreatedBy" json:"created_by_user,omitempty"`
 }
 
 func (oit *OrderIngredientTransaction) BeforeCreate(tx *gorm.DB) error {

internal/entities/product.go

@@ -26,13 +26,14 @@ type Product struct {
 	CreatedAt      time.Time  `gorm:"autoCreateTime" json:"created_at"`
 	UpdatedAt      time.Time  `gorm:"autoUpdateTime" json:"updated_at"`
 
-	Organization    Organization     `gorm:"foreignKey:OrganizationID" json:"organization,omitempty"`
-	Category        Category         `gorm:"foreignKey:CategoryID" json:"category,omitempty"`
-	Unit            *Unit            `gorm:"foreignKey:UnitID" json:"unit,omitempty"`
-	ProductVariants []ProductVariant `gorm:"foreignKey:ProductID" json:"variants,omitempty"`
-	ProductRecipes  []ProductRecipe  `gorm:"foreignKey:ProductID" json:"product_recipes,omitempty"`
-	Inventory       []Inventory      `gorm:"foreignKey:ProductID" json:"inventory,omitempty"`
-	OrderItems      []OrderItem      `gorm:"foreignKey:ProductID" json:"order_items,omitempty"`
+	Organization        Organization         `gorm:"foreignKey:OrganizationID" json:"organization,omitempty"`
+	Category            Category             `gorm:"foreignKey:CategoryID" json:"category,omitempty"`
+	Unit                *Unit                `gorm:"foreignKey:UnitID" json:"unit,omitempty"`
+	ProductVariants     []ProductVariant     `gorm:"foreignKey:ProductID" json:"variants,omitempty"`
+	ProductRecipes      []ProductRecipe      `gorm:"foreignKey:ProductID" json:"product_recipes,omitempty"`
+	Inventory           []Inventory          `gorm:"foreignKey:ProductID" json:"inventory,omitempty"`
+	OrderItems          []OrderItem          `gorm:"foreignKey:ProductID" json:"order_items,omitempty"`
+	ProductOutletPrices []ProductOutletPrice `gorm:"foreignKey:ProductID" json:"product_outlet_prices,omitempty"`
 }
 
 func (p *Product) BeforeCreate(tx *gorm.DB) error {

internal/entities/product_ingredient.go

@@ -7,15 +7,15 @@ import (
 )
 
 type ProductIngredient struct {
-	ID               uuid.UUID  `json:"id" db:"id"`
-	OrganizationID   uuid.UUID  `json:"organization_id" db:"organization_id"`
-	OutletID         *uuid.UUID `json:"outlet_id" db:"outlet_id"`
-	ProductID        uuid.UUID  `json:"product_id" db:"product_id"`
-	IngredientID     uuid.UUID  `json:"ingredient_id" db:"ingredient_id"`
-	Quantity         float64    `json:"quantity" db:"quantity"`
-	WastePercentage  float64    `json:"waste_percentage" db:"waste_percentage"`
-	CreatedAt        time.Time  `json:"created_at" db:"created_at"`
-	UpdatedAt        time.Time  `json:"updated_at" db:"updated_at"`
+	ID              uuid.UUID  `json:"id" db:"id"`
+	OrganizationID  uuid.UUID  `json:"organization_id" db:"organization_id"`
+	OutletID        *uuid.UUID `json:"outlet_id" db:"outlet_id"`
+	ProductID       uuid.UUID  `json:"product_id" db:"product_id"`
+	IngredientID    uuid.UUID  `json:"ingredient_id" db:"ingredient_id"`
+	Quantity        float64    `json:"quantity" db:"quantity"`
+	WastePercentage float64    `json:"waste_percentage" db:"waste_percentage"`
+	CreatedAt       time.Time  `json:"created_at" db:"created_at"`
+	UpdatedAt       time.Time  `json:"updated_at" db:"updated_at"`
 
 	// Relations
 	Product    *Product    `json:"product,omitempty"`

internal/entities/product_outlet_price.go

@@ -8,12 +8,13 @@ import (
 )
 
 type ProductOutletPrice struct {
-	ID        uuid.UUID `gorm:"type:uuid;primary_key;default:gen_random_uuid()" json:"id"`
-	ProductID uuid.UUID `gorm:"type:uuid;not null;index" json:"product_id"`
-	OutletID  uuid.UUID `gorm:"type:uuid;not null;index" json:"outlet_id"`
-	Price     float64   `gorm:"type:decimal(10,2);not null" json:"price"`
-	CreatedAt time.Time `gorm:"autoCreateTime" json:"created_at"`
-	UpdatedAt time.Time `gorm:"autoUpdateTime" json:"updated_at"`
+	ID             uuid.UUID `gorm:"type:uuid;primary_key;default:gen_random_uuid()" json:"id"`
+	ProductID      uuid.UUID `gorm:"type:uuid;not null;index" json:"product_id"`
+	OutletID       uuid.UUID `gorm:"type:uuid;not null;index" json:"outlet_id"`
+	Price          float64   `gorm:"type:decimal(10,2);not null" json:"price"`
+	PrintToChecker bool      `gorm:"not null;default:true" json:"print_to_checker"`
+	CreatedAt      time.Time `gorm:"autoCreateTime" json:"created_at"`
+	UpdatedAt      time.Time `gorm:"autoUpdateTime" json:"updated_at"`
 
 	Product Product `gorm:"foreignKey:ProductID" json:"product,omitempty"`
 	Outlet  Outlet  `gorm:"foreignKey:OutletID" json:"outlet,omitempty"`

internal/entities/product_recipe.go

@@ -34,4 +34,4 @@ func (pr *ProductRecipe) BeforeCreate(tx *gorm.DB) error {
 
 func (ProductRecipe) TableName() string {
 	return "product_recipes"
-}
+}

internal/entities/purchase_category.go

@@ -0,0 +1,71 @@
+package entities
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+)
+
+type PurchaseCategoryType string
+
+const (
+	PurchaseCategoryTypeRawMaterial PurchaseCategoryType = "raw_material"
+	PurchaseCategoryTypeExpense     PurchaseCategoryType = "expense"
+)
+
+type PurchaseCategoryPreset struct {
+	ID        uuid.UUID            `gorm:"type:uuid;primary_key;default:gen_random_uuid()" json:"id"`
+	ParentID  *uuid.UUID           `gorm:"type:uuid;index" json:"parent_id"`
+	Code      string               `gorm:"not null;unique;size:100" json:"code"`
+	Name      string               `gorm:"not null;size:255" json:"name"`
+	Type      PurchaseCategoryType `gorm:"not null;size:20" json:"type"`
+	SortOrder int                  `gorm:"not null;default:0" json:"sort_order"`
+	IsActive  bool                 `gorm:"not null;default:true" json:"is_active"`
+	CreatedAt time.Time            `gorm:"autoCreateTime" json:"created_at"`
+	UpdatedAt time.Time            `gorm:"autoUpdateTime" json:"updated_at"`
+
+	Parent *PurchaseCategoryPreset `gorm:"foreignKey:ParentID" json:"parent,omitempty"`
+}
+
+func (p *PurchaseCategoryPreset) BeforeCreate(tx *gorm.DB) error {
+	if p.ID == uuid.Nil {
+		p.ID = uuid.New()
+	}
+	return nil
+}
+
+func (PurchaseCategoryPreset) TableName() string {
+	return "purchase_category_presets"
+}
+
+type PurchaseCategory struct {
+	ID             uuid.UUID            `gorm:"type:uuid;primary_key;default:gen_random_uuid()" json:"id"`
+	OrganizationID uuid.UUID            `gorm:"type:uuid;not null;index" json:"organization_id"`
+	PresetID       *uuid.UUID           `gorm:"type:uuid;index" json:"preset_id"`
+	ParentID       *uuid.UUID           `gorm:"type:uuid;index" json:"parent_id"`
+	Code           string               `gorm:"not null;size:100" json:"code"`
+	Name           string               `gorm:"not null;size:255" json:"name"`
+	Type           PurchaseCategoryType `gorm:"not null;size:20" json:"type"`
+	SortOrder      int                  `gorm:"not null;default:0" json:"sort_order"`
+	IsSystem       bool                 `gorm:"not null;default:false" json:"is_system"`
+	IsActive       bool                 `gorm:"not null;default:true" json:"is_active"`
+	CreatedAt      time.Time            `gorm:"autoCreateTime" json:"created_at"`
+	UpdatedAt      time.Time            `gorm:"autoUpdateTime" json:"updated_at"`
+
+	Organization *Organization           `gorm:"foreignKey:OrganizationID" json:"organization,omitempty"`
+	Preset       *PurchaseCategoryPreset `gorm:"foreignKey:PresetID" json:"preset,omitempty"`
+	Parent       *PurchaseCategory       `gorm:"foreignKey:ParentID" json:"parent,omitempty"`
+	Children     []PurchaseCategory      `gorm:"foreignKey:ParentID" json:"children,omitempty"`
+}
+
+func (c *PurchaseCategory) BeforeCreate(tx *gorm.DB) error {
+	if c.ID == uuid.Nil {
+		c.ID = uuid.New()
+	}
+	return nil
+}
+
+func (PurchaseCategory) TableName() string {
+	return "purchase_categories"
+}

internal/entities/purchase_order.go

@@ -9,18 +9,18 @@ import (
 )
 
 type PurchaseOrder struct {
-	ID              uuid.UUID `gorm:"type:uuid;primary_key;default:gen_random_uuid()" json:"id"`
-	OrganizationID  uuid.UUID `gorm:"type:uuid;not null" json:"organization_id" validate:"required"`
-	VendorID        uuid.UUID `gorm:"type:uuid;not null" json:"vendor_id" validate:"required"`
-	PONumber        string    `gorm:"not null;size:50" json:"po_number" validate:"required,min=1,max=50"`
-	TransactionDate time.Time `gorm:"type:date;not null" json:"transaction_date" validate:"required"`
-	DueDate         time.Time `gorm:"type:date;not null" json:"due_date" validate:"required"`
-	Reference       *string   `gorm:"size:100" json:"reference" validate:"omitempty,max=100"`
-	Status          string    `gorm:"not null;size:20;default:'draft'" json:"status" validate:"required,oneof=draft sent approved received cancelled"`
-	Message         *string   `gorm:"type:text" json:"message" validate:"omitempty"`
-	TotalAmount     float64   `gorm:"type:decimal(15,2);not null;default:0" json:"total_amount"`
-	CreatedAt       time.Time `gorm:"autoCreateTime" json:"created_at"`
-	UpdatedAt       time.Time `gorm:"autoUpdateTime" json:"updated_at"`
+	ID              uuid.UUID  `gorm:"type:uuid;primary_key;default:gen_random_uuid()" json:"id"`
+	OrganizationID  uuid.UUID  `gorm:"type:uuid;not null" json:"organization_id" validate:"required"`
+	VendorID        uuid.UUID  `gorm:"type:uuid;not null" json:"vendor_id" validate:"required"`
+	PONumber        string     `gorm:"not null;size:50" json:"po_number" validate:"required,min=1,max=50"`
+	TransactionDate time.Time  `gorm:"type:date;not null" json:"transaction_date" validate:"required"`
+	DueDate         *time.Time `gorm:"type:date" json:"due_date" validate:"omitempty"`
+	Reference       *string    `gorm:"size:100" json:"reference" validate:"omitempty,max=100"`
+	Status          string     `gorm:"not null;size:20;default:'draft'" json:"status" validate:"required,oneof=draft sent approved received cancelled"`
+	Message         *string    `gorm:"type:text" json:"message" validate:"omitempty"`
+	TotalAmount     float64    `gorm:"type:decimal(15,2);not null;default:0" json:"total_amount"`
+	CreatedAt       time.Time  `gorm:"autoCreateTime" json:"created_at"`
+	UpdatedAt       time.Time  `gorm:"autoUpdateTime" json:"updated_at"`
 
 	Organization *Organization             `gorm:"foreignKey:OrganizationID" json:"organization,omitempty"`
 	Vendor       *Vendor                   `gorm:"foreignKey:VendorID" json:"vendor,omitempty"`
@@ -41,19 +41,21 @@ func (PurchaseOrder) TableName() string {
 }
 
 type PurchaseOrderItem struct {
-	ID              uuid.UUID `gorm:"type:uuid;primary_key;default:gen_random_uuid()" json:"id"`
-	PurchaseOrderID uuid.UUID `gorm:"type:uuid;not null" json:"purchase_order_id" validate:"required"`
-	IngredientID    uuid.UUID `gorm:"type:uuid;not null" json:"ingredient_id" validate:"required"`
-	Description     *string   `gorm:"type:text" json:"description" validate:"omitempty"`
-	Quantity        float64   `gorm:"type:decimal(10,3);not null" json:"quantity" validate:"required,gt=0"`
-	UnitID          uuid.UUID `gorm:"type:uuid;not null" json:"unit_id" validate:"required"`
-	Amount          float64   `gorm:"type:decimal(15,2);not null" json:"amount" validate:"required,gte=0"`
-	CreatedAt       time.Time `gorm:"autoCreateTime" json:"created_at"`
-	UpdatedAt       time.Time `gorm:"autoUpdateTime" json:"updated_at"`
+	ID                 uuid.UUID  `gorm:"type:uuid;primary_key;default:gen_random_uuid()" json:"id"`
+	PurchaseOrderID    uuid.UUID  `gorm:"type:uuid;not null" json:"purchase_order_id" validate:"required"`
+	IngredientID       *uuid.UUID `gorm:"type:uuid" json:"ingredient_id" validate:"omitempty"`
+	PurchaseCategoryID uuid.UUID  `gorm:"type:uuid;not null;index" json:"purchase_category_id" validate:"required"`
+	Description        *string    `gorm:"type:text" json:"description" validate:"omitempty"`
+	Quantity           *float64   `gorm:"type:decimal(10,3)" json:"quantity" validate:"omitempty,gt=0"`
+	UnitID             *uuid.UUID `gorm:"type:uuid" json:"unit_id" validate:"omitempty"`
+	Amount             float64    `gorm:"type:decimal(15,2);not null" json:"amount" validate:"required,gte=0"`
+	CreatedAt          time.Time  `gorm:"autoCreateTime" json:"created_at"`
+	UpdatedAt          time.Time  `gorm:"autoUpdateTime" json:"updated_at"`
 
-	PurchaseOrder *PurchaseOrder `gorm:"foreignKey:PurchaseOrderID" json:"purchase_order,omitempty"`
-	Ingredient    *Ingredient    `gorm:"foreignKey:IngredientID" json:"ingredient,omitempty"`
-	Unit          *Unit          `gorm:"foreignKey:UnitID" json:"unit,omitempty"`
+	PurchaseOrder    *PurchaseOrder    `gorm:"foreignKey:PurchaseOrderID" json:"purchase_order,omitempty"`
+	Ingredient       *Ingredient       `gorm:"foreignKey:IngredientID" json:"ingredient,omitempty"`
+	PurchaseCategory *PurchaseCategory `gorm:"foreignKey:PurchaseCategoryID" json:"purchase_category,omitempty"`
+	Unit             *Unit             `gorm:"foreignKey:UnitID" json:"unit,omitempty"`
 }
 
 func (poi *PurchaseOrderItem) BeforeCreate(tx *gorm.DB) error {

internal/handler/analytics_handler.go

@@ -85,6 +85,30 @@ func (h *AnalyticsHandler) GetSalesAnalytics(c *gin.Context) {
 	util.HandleResponse(c.Writer, c.Request, contract.BuildSuccessResponse(contractResp), "AnalyticsHandler::GetSalesAnalytics")
 }
 
+func (h *AnalyticsHandler) GetPurchasingAnalytics(c *gin.Context) {
+	ctx := c.Request.Context()
+	contextInfo := appcontext.FromGinContext(ctx)
+
+	var req contract.PurchasingAnalyticsRequest
+	if err := c.ShouldBindQuery(&req); err != nil {
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{contract.NewResponseError("invalid_request", "AnalyticsHandler::GetPurchasingAnalytics", err.Error())}), "AnalyticsHandler::GetPurchasingAnalytics")
+		return
+	}
+
+	req.OrganizationID = contextInfo.OrganizationID
+	req.OutletID = h.resolveOutletID(c, contextInfo.OutletID)
+	modelReq := transformer.PurchasingAnalyticsContractToModel(&req)
+
+	response, err := h.analyticsService.GetPurchasingAnalytics(ctx, modelReq)
+	if err != nil {
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{contract.NewResponseError("internal_error", "AnalyticsHandler::GetPurchasingAnalytics", err.Error())}), "AnalyticsHandler::GetPurchasingAnalytics")
+		return
+	}
+
+	contractResp := transformer.PurchasingAnalyticsModelToContract(response)
+	util.HandleResponse(c.Writer, c.Request, contract.BuildSuccessResponse(contractResp), "AnalyticsHandler::GetPurchasingAnalytics")
+}
+
 func (h *AnalyticsHandler) GetProductAnalytics(c *gin.Context) {
 	ctx := c.Request.Context()
 	contextInfo := appcontext.FromGinContext(ctx)
@@ -186,3 +210,59 @@ func (h *AnalyticsHandler) GetProfitLossAnalytics(c *gin.Context) {
 	contractResp := transformer.ProfitLossAnalyticsModelToContract(response)
 	util.HandleResponse(c.Writer, c.Request, contract.BuildSuccessResponse(contractResp), "AnalyticsHandler::GetProfitLossAnalytics")
 }
+
+func (h *AnalyticsHandler) GetExclusiveSummaryPeriod(c *gin.Context) {
+	ctx := c.Request.Context()
+	contextInfo := appcontext.FromGinContext(ctx)
+
+	var req contract.ExclusiveSummaryPeriodRequest
+	if err := c.ShouldBindQuery(&req); err != nil {
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{contract.NewResponseError("invalid_request", "AnalyticsHandler::GetExclusiveSummaryPeriod", err.Error())}), "AnalyticsHandler::GetExclusiveSummaryPeriod")
+		return
+	}
+
+	req.OrganizationID = contextInfo.OrganizationID
+	req.OutletID = h.resolveOutletID(c, contextInfo.OutletID)
+	modelReq, err := transformer.ExclusiveSummaryPeriodContractToModel(&req)
+	if err != nil {
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{contract.NewResponseError("invalid_request", "AnalyticsHandler::GetExclusiveSummaryPeriod", err.Error())}), "AnalyticsHandler::GetExclusiveSummaryPeriod")
+		return
+	}
+
+	response, err := h.analyticsService.GetExclusiveSummaryPeriod(ctx, modelReq)
+	if err != nil {
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{contract.NewResponseError("internal_error", "AnalyticsHandler::GetExclusiveSummaryPeriod", err.Error())}), "AnalyticsHandler::GetExclusiveSummaryPeriod")
+		return
+	}
+
+	contractResp := transformer.ExclusiveSummaryPeriodModelToContract(response)
+	util.HandleResponse(c.Writer, c.Request, contract.BuildSuccessResponse(contractResp), "AnalyticsHandler::GetExclusiveSummaryPeriod")
+}
+
+func (h *AnalyticsHandler) GetExclusiveSummaryMonthly(c *gin.Context) {
+	ctx := c.Request.Context()
+	contextInfo := appcontext.FromGinContext(ctx)
+
+	var req contract.ExclusiveSummaryMonthlyRequest
+	if err := c.ShouldBindQuery(&req); err != nil {
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{contract.NewResponseError("invalid_request", "AnalyticsHandler::GetExclusiveSummaryMonthly", err.Error())}), "AnalyticsHandler::GetExclusiveSummaryMonthly")
+		return
+	}
+
+	req.OrganizationID = contextInfo.OrganizationID
+	req.OutletID = h.resolveOutletID(c, contextInfo.OutletID)
+	modelReq, err := transformer.ExclusiveSummaryMonthlyContractToModel(&req)
+	if err != nil {
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{contract.NewResponseError("invalid_request", "AnalyticsHandler::GetExclusiveSummaryMonthly", err.Error())}), "AnalyticsHandler::GetExclusiveSummaryMonthly")
+		return
+	}
+
+	response, err := h.analyticsService.GetExclusiveSummaryMonthly(ctx, modelReq)
+	if err != nil {
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{contract.NewResponseError("internal_error", "AnalyticsHandler::GetExclusiveSummaryMonthly", err.Error())}), "AnalyticsHandler::GetExclusiveSummaryMonthly")
+		return
+	}
+
+	contractResp := transformer.ExclusiveSummaryMonthlyModelToContract(response)
+	util.HandleResponse(c.Writer, c.Request, contract.BuildSuccessResponse(contractResp), "AnalyticsHandler::GetExclusiveSummaryMonthly")
+}

internal/handler/category_handler.go

@@ -36,7 +36,7 @@ func (h *CategoryHandler) CreateCategory(c *gin.Context) {
 	contextInfo := appcontext.FromGinContext(ctx)
 
 	var req contract.CreateCategoryRequest
-		fmt.Printf("CategoryHandler::CreateCategory -> Request: %+v\n", req)
+	fmt.Printf("CategoryHandler::CreateCategory -> Request: %+v\n", req)
 	if err := c.ShouldBindJSON(&req); err != nil {
 		logger.FromContext(c.Request.Context()).WithError(err).Error("CategoryHandler::CreateCategory -> request binding failed")
 		validationResponseError := contract.NewResponseError(constants.MissingFieldErrorCode, constants.RequestEntity, err.Error())
@@ -44,6 +44,11 @@ func (h *CategoryHandler) CreateCategory(c *gin.Context) {
 		return
 	}
 
+	// Inject outlet_id from context if user has one and request doesn't provide it
+	if req.OutletID == nil && contextInfo.OutletID != uuid.Nil {
+		req.OutletID = &contextInfo.OutletID
+	}
+
 	validationError, validationErrorCode := h.categoryValidator.ValidateCreateCategoryRequest(&req)
 	if validationError != nil {
 		validationResponseError := contract.NewResponseError(validationErrorCode, constants.RequestEntity, validationError.Error())
@@ -149,6 +154,11 @@ func (h *CategoryHandler) ListCategories(c *gin.Context) {
 		OrganizationID: &contextInfo.OrganizationID,
 	}
 
+	// Inject outlet_id from context if user has one
+	if contextInfo.OutletID != uuid.Nil {
+		req.OutletID = &contextInfo.OutletID
+	}
+
 	// Parse query parameters
 	if pageStr := c.Query("page"); pageStr != "" {
 		if page, err := strconv.Atoi(pageStr); err == nil {
@@ -176,6 +186,11 @@ func (h *CategoryHandler) ListCategories(c *gin.Context) {
 		}
 	}
 
+	if outletIDStr := c.Query("outlet_id"); outletIDStr != "" {
+		if outletID, err := uuid.Parse(outletIDStr); err == nil {
+			req.OutletID = &outletID
+		}
+	}
 	validationError, validationErrorCode := h.categoryValidator.ValidateListCategoriesRequest(req)
 	if validationError != nil {
 		logger.FromContext(ctx).WithError(validationError).Error("CategoryHandler::ListCategories -> request validation failed")

internal/handler/chart_of_account_type_handler.go

@@ -99,7 +99,7 @@ func (h *ChartOfAccountTypeHandler) DeleteChartOfAccountType(c *gin.Context) {
 func (h *ChartOfAccountTypeHandler) ListChartOfAccountTypes(c *gin.Context) {
 	// Parse query parameters
 	filters := make(map[string]interface{})
-	
+
 	if isActive := c.Query("is_active"); isActive != "" {
 		if isActiveBool, err := strconv.ParseBool(isActive); err == nil {
 			filters["is_active"] = isActiveBool

internal/handler/common.go

@@ -1,6 +1,8 @@
 package handler
 
 import (
+	"apskel-pos-be/internal/logger"
+	"fmt"
 	"net/http"
 	"time"
 )
@@ -47,7 +49,7 @@ func (m *CommonMiddleware) Recovery(next http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		defer func() {
 			if err := recover(); err != nil {
-
+				logger.FromContext(r.Context()).Error("Recovery", fmt.Sprintf("panic recovered: %v", err))
 				http.Error(w, "Internal Server Error", http.StatusInternalServerError)
 			}
 		}()

internal/handler/expense_handler.go

@@ -0,0 +1,229 @@
+package handler
+
+import (
+	"apskel-pos-be/internal/appcontext"
+	"apskel-pos-be/internal/util"
+	"strconv"
+
+	"apskel-pos-be/internal/constants"
+	"apskel-pos-be/internal/contract"
+	"apskel-pos-be/internal/logger"
+	"apskel-pos-be/internal/service"
+	"apskel-pos-be/internal/validator"
+
+	"github.com/gin-gonic/gin"
+	"github.com/google/uuid"
+)
+
+type ExpenseHandler struct {
+	expenseService   service.ExpenseService
+	expenseValidator validator.ExpenseValidator
+}
+
+func NewExpenseHandler(
+	expenseService service.ExpenseService,
+	expenseValidator validator.ExpenseValidator,
+) *ExpenseHandler {
+	return &ExpenseHandler{
+		expenseService:   expenseService,
+		expenseValidator: expenseValidator,
+	}
+}
+
+func (h *ExpenseHandler) CreateExpense(c *gin.Context) {
+	ctx := c.Request.Context()
+	contextInfo := appcontext.FromGinContext(ctx)
+
+	var req contract.CreateExpenseRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		logger.FromContext(ctx).WithError(err).Error("ExpenseHandler::CreateExpense -> request binding failed")
+		validationResponseError := contract.NewResponseError(constants.MissingFieldErrorCode, constants.RequestEntity, err.Error())
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "ExpenseHandler::CreateExpense")
+		return
+	}
+
+	validationError, validationErrorCode := h.expenseValidator.ValidateCreateExpenseRequest(&req)
+	if validationError != nil {
+		validationResponseError := contract.NewResponseError(validationErrorCode, constants.RequestEntity, validationError.Error())
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "ExpenseHandler::CreateExpense")
+		return
+	}
+
+	expenseResponse := h.expenseService.CreateExpense(ctx, contextInfo, &req)
+	if expenseResponse.HasErrors() {
+		errorResp := expenseResponse.GetErrors()[0]
+		logger.FromContext(ctx).WithError(errorResp).Error("ExpenseHandler::CreateExpense -> Failed to create expense from service")
+	}
+
+	util.HandleResponse(c.Writer, c.Request, expenseResponse, "ExpenseHandler::CreateExpense")
+}
+
+func (h *ExpenseHandler) UpdateExpense(c *gin.Context) {
+	ctx := c.Request.Context()
+	contextInfo := appcontext.FromGinContext(ctx)
+
+	expenseIDStr := c.Param("id")
+	expenseID, err := uuid.Parse(expenseIDStr)
+	if err != nil {
+		logger.FromContext(ctx).WithError(err).Error("ExpenseHandler::UpdateExpense -> Invalid expense ID")
+		validationResponseError := contract.NewResponseError(constants.MalformedFieldErrorCode, constants.RequestEntity, "Invalid expense ID")
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "ExpenseHandler::UpdateExpense")
+		return
+	}
+
+	var req contract.UpdateExpenseRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		logger.FromContext(ctx).WithError(err).Error("ExpenseHandler::UpdateExpense -> request binding failed")
+		validationResponseError := contract.NewResponseError(constants.MissingFieldErrorCode, constants.RequestEntity, "Invalid request body")
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "ExpenseHandler::UpdateExpense")
+		return
+	}
+
+	validationError, validationErrorCode := h.expenseValidator.ValidateUpdateExpenseRequest(&req)
+	if validationError != nil {
+		validationResponseError := contract.NewResponseError(validationErrorCode, constants.RequestEntity, validationError.Error())
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "ExpenseHandler::UpdateExpense")
+		return
+	}
+
+	expenseResponse := h.expenseService.UpdateExpense(ctx, contextInfo, expenseID, &req)
+	if expenseResponse.HasErrors() {
+		errorResp := expenseResponse.GetErrors()[0]
+		logger.FromContext(ctx).WithError(errorResp).Error("ExpenseHandler::UpdateExpense -> Failed to update expense from service")
+	}
+
+	util.HandleResponse(c.Writer, c.Request, expenseResponse, "ExpenseHandler::UpdateExpense")
+}
+
+func (h *ExpenseHandler) DeleteExpense(c *gin.Context) {
+	ctx := c.Request.Context()
+	contextInfo := appcontext.FromGinContext(ctx)
+
+	expenseIDStr := c.Param("id")
+	expenseID, err := uuid.Parse(expenseIDStr)
+	if err != nil {
+		logger.FromContext(ctx).WithError(err).Error("ExpenseHandler::DeleteExpense -> Invalid expense ID")
+		validationResponseError := contract.NewResponseError(constants.MalformedFieldErrorCode, constants.RequestEntity, "Invalid expense ID")
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "ExpenseHandler::DeleteExpense")
+		return
+	}
+
+	expenseResponse := h.expenseService.DeleteExpense(ctx, contextInfo, expenseID)
+	if expenseResponse.HasErrors() {
+		errorResp := expenseResponse.GetErrors()[0]
+		logger.FromContext(ctx).WithError(errorResp).Error("ExpenseHandler::DeleteExpense -> Failed to delete expense from service")
+	}
+
+	util.HandleResponse(c.Writer, c.Request, expenseResponse, "ExpenseHandler::DeleteExpense")
+}
+
+func (h *ExpenseHandler) GetExpense(c *gin.Context) {
+	ctx := c.Request.Context()
+	contextInfo := appcontext.FromGinContext(ctx)
+
+	expenseIDStr := c.Param("id")
+	expenseID, err := uuid.Parse(expenseIDStr)
+	if err != nil {
+		logger.FromContext(ctx).WithError(err).Error("ExpenseHandler::GetExpense -> Invalid expense ID")
+		validationResponseError := contract.NewResponseError(constants.MalformedFieldErrorCode, constants.RequestEntity, "Invalid expense ID")
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "ExpenseHandler::GetExpense")
+		return
+	}
+
+	expenseResponse := h.expenseService.GetExpenseByID(ctx, contextInfo, expenseID)
+	if expenseResponse.HasErrors() {
+		errorResp := expenseResponse.GetErrors()[0]
+		logger.FromContext(ctx).WithError(errorResp).Error("ExpenseHandler::GetExpense -> Failed to get expense from service")
+	}
+
+	util.HandleResponse(c.Writer, c.Request, expenseResponse, "ExpenseHandler::GetExpense")
+}
+
+func (h *ExpenseHandler) ListExpenses(c *gin.Context) {
+	ctx := c.Request.Context()
+	contextInfo := appcontext.FromGinContext(ctx)
+
+	req := &contract.ListExpenseRequest{
+		Page:  1,
+		Limit: 10,
+	}
+
+	if pageStr := c.Query("page"); pageStr != "" {
+		if page, err := strconv.Atoi(pageStr); err == nil {
+			req.Page = page
+		}
+	}
+
+	if limitStr := c.Query("limit"); limitStr != "" {
+		if limit, err := strconv.Atoi(limitStr); err == nil {
+			req.Limit = limit
+		}
+	}
+
+	if search := c.Query("search"); search != "" {
+		req.Search = search
+	}
+
+	if status := c.Query("status"); status != "" {
+		req.Status = status
+	}
+
+	// Prioritize outlet_id from context (e.g. outlet-scoped user),
+	// fall back to query param if context has no outlet.
+	if contextInfo.OutletID != uuid.Nil {
+		req.OutletID = contextInfo.OutletID.String()
+	} else if outletID := c.Query("outlet_id"); outletID != "" {
+		req.OutletID = outletID
+	}
+
+	if startDate := c.Query("start_date"); startDate != "" {
+		req.StartDate = startDate
+	}
+
+	if endDate := c.Query("end_date"); endDate != "" {
+		req.EndDate = endDate
+	}
+
+	validationError, validationErrorCode := h.expenseValidator.ValidateListExpenseRequest(req)
+	if validationError != nil {
+		validationResponseError := contract.NewResponseError(validationErrorCode, constants.RequestEntity, validationError.Error())
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "ExpenseHandler::ListExpenses")
+		return
+	}
+
+	expenseResponse := h.expenseService.ListExpenses(ctx, contextInfo, req)
+	if expenseResponse.HasErrors() {
+		errorResp := expenseResponse.GetErrors()[0]
+		logger.FromContext(ctx).WithError(errorResp).Error("ExpenseHandler::ListExpenses -> Failed to list expenses from service")
+	}
+
+	util.HandleResponse(c.Writer, c.Request, expenseResponse, "ExpenseHandler::ListExpenses")
+}
+
+func (h *ExpenseHandler) GetExpenseAnalytics(c *gin.Context) {
+	ctx := c.Request.Context()
+	contextInfo := appcontext.FromGinContext(ctx)
+
+	var req contract.ExpenseAnalyticsRequest
+	if err := c.ShouldBindQuery(&req); err != nil {
+		logger.FromContext(ctx).WithError(err).Error("ExpenseHandler::GetExpenseAnalytics -> request binding failed")
+		validationResponseError := contract.NewResponseError(constants.MalformedFieldErrorCode, constants.RequestEntity, err.Error())
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "ExpenseHandler::GetExpenseAnalytics")
+		return
+	}
+
+	if contextInfo.OutletID != uuid.Nil {
+		outletID := contextInfo.OutletID.String()
+		req.OutletID = &outletID
+	} else if outletID := c.Query("outlet_id"); outletID != "" {
+		req.OutletID = &outletID
+	}
+
+	expenseResponse := h.expenseService.GetExpenseAnalytics(ctx, contextInfo, &req)
+	if expenseResponse.HasErrors() {
+		errorResp := expenseResponse.GetErrors()[0]
+		logger.FromContext(ctx).WithError(errorResp).Error("ExpenseHandler::GetExpenseAnalytics -> Failed to get expense analytics from service")
+	}
+
+	util.HandleResponse(c.Writer, c.Request, expenseResponse, "ExpenseHandler::GetExpenseAnalytics")
+}

internal/handler/ingredient_unit_converter_handler.go

@@ -275,4 +275,3 @@ func (h *IngredientUnitConverterHandler) GetUnitsByIngredientID(c *gin.Context)
 
 	util.HandleResponse(c.Writer, c.Request, unitsResponse, "IngredientUnitConverterHandler::GetUnitsByIngredientID")
 }
-

internal/handler/product_handler.go

@@ -60,6 +60,7 @@ func (h *ProductHandler) CreateProduct(c *gin.Context) {
 
 func (h *ProductHandler) UpdateProduct(c *gin.Context) {
 	ctx := c.Request.Context()
+	contextInfo := appcontext.FromGinContext(ctx)
 
 	productIDStr := c.Param("id")
 	productID, err := uuid.Parse(productIDStr)
@@ -85,7 +86,7 @@ func (h *ProductHandler) UpdateProduct(c *gin.Context) {
 		return
 	}
 
-	productResponse := h.productService.UpdateProduct(ctx, productID, &req)
+	productResponse := h.productService.UpdateProduct(ctx, contextInfo, productID, &req)
 	if productResponse.HasErrors() {
 		errorResp := productResponse.GetErrors()[0]
 		logger.FromContext(ctx).WithError(errorResp).Error("ProductHandler::UpdateProduct -> Failed to update product from service")

internal/handler/product_recipe_handler.go

@@ -219,4 +219,4 @@ func (h *ProductRecipeHandler) BulkCreate(c *gin.Context) {
 	}
 
 	c.JSON(http.StatusCreated, contract.BuildSuccessResponse(recipes))
-}
+}

internal/handler/purchase_category_handler.go

@@ -0,0 +1,160 @@
+package handler
+
+import (
+	"strconv"
+
+	"apskel-pos-be/internal/appcontext"
+	"apskel-pos-be/internal/constants"
+	"apskel-pos-be/internal/contract"
+	"apskel-pos-be/internal/logger"
+	"apskel-pos-be/internal/service"
+	"apskel-pos-be/internal/util"
+	"apskel-pos-be/internal/validator"
+
+	"github.com/gin-gonic/gin"
+	"github.com/google/uuid"
+)
+
+type PurchaseCategoryHandler struct {
+	purchaseCategoryService   service.PurchaseCategoryService
+	purchaseCategoryValidator validator.PurchaseCategoryValidator
+}
+
+func NewPurchaseCategoryHandler(purchaseCategoryService service.PurchaseCategoryService, purchaseCategoryValidator validator.PurchaseCategoryValidator) *PurchaseCategoryHandler {
+	return &PurchaseCategoryHandler{
+		purchaseCategoryService:   purchaseCategoryService,
+		purchaseCategoryValidator: purchaseCategoryValidator,
+	}
+}
+
+func (h *PurchaseCategoryHandler) CreatePurchaseCategory(c *gin.Context) {
+	ctx := c.Request.Context()
+	contextInfo := appcontext.FromGinContext(ctx)
+
+	var req contract.CreatePurchaseCategoryRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		logger.FromContext(ctx).WithError(err).Error("PurchaseCategoryHandler::CreatePurchaseCategory -> request binding failed")
+		validationResponseError := contract.NewResponseError(constants.MissingFieldErrorCode, constants.RequestEntity, err.Error())
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "PurchaseCategoryHandler::CreatePurchaseCategory")
+		return
+	}
+
+	if validationError, validationErrorCode := h.purchaseCategoryValidator.ValidateCreatePurchaseCategoryRequest(&req); validationError != nil {
+		validationResponseError := contract.NewResponseError(validationErrorCode, constants.RequestEntity, validationError.Error())
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "PurchaseCategoryHandler::CreatePurchaseCategory")
+		return
+	}
+
+	response := h.purchaseCategoryService.CreatePurchaseCategory(ctx, contextInfo, &req)
+	util.HandleResponse(c.Writer, c.Request, response, "PurchaseCategoryHandler::CreatePurchaseCategory")
+}
+
+func (h *PurchaseCategoryHandler) UpdatePurchaseCategory(c *gin.Context) {
+	ctx := c.Request.Context()
+	contextInfo := appcontext.FromGinContext(ctx)
+
+	categoryID, err := uuid.Parse(c.Param("id"))
+	if err != nil {
+		validationResponseError := contract.NewResponseError(constants.MalformedFieldErrorCode, constants.RequestEntity, "Invalid purchase category ID")
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "PurchaseCategoryHandler::UpdatePurchaseCategory")
+		return
+	}
+
+	var req contract.UpdatePurchaseCategoryRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		logger.FromContext(ctx).WithError(err).Error("PurchaseCategoryHandler::UpdatePurchaseCategory -> request binding failed")
+		validationResponseError := contract.NewResponseError(constants.MissingFieldErrorCode, constants.RequestEntity, err.Error())
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "PurchaseCategoryHandler::UpdatePurchaseCategory")
+		return
+	}
+
+	if validationError, validationErrorCode := h.purchaseCategoryValidator.ValidateUpdatePurchaseCategoryRequest(&req); validationError != nil {
+		validationResponseError := contract.NewResponseError(validationErrorCode, constants.RequestEntity, validationError.Error())
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "PurchaseCategoryHandler::UpdatePurchaseCategory")
+		return
+	}
+
+	response := h.purchaseCategoryService.UpdatePurchaseCategory(ctx, contextInfo, categoryID, &req)
+	util.HandleResponse(c.Writer, c.Request, response, "PurchaseCategoryHandler::UpdatePurchaseCategory")
+}
+
+func (h *PurchaseCategoryHandler) DeletePurchaseCategory(c *gin.Context) {
+	ctx := c.Request.Context()
+	contextInfo := appcontext.FromGinContext(ctx)
+
+	categoryID, err := uuid.Parse(c.Param("id"))
+	if err != nil {
+		validationResponseError := contract.NewResponseError(constants.MalformedFieldErrorCode, constants.RequestEntity, "Invalid purchase category ID")
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "PurchaseCategoryHandler::DeletePurchaseCategory")
+		return
+	}
+
+	response := h.purchaseCategoryService.DeletePurchaseCategory(ctx, contextInfo, categoryID)
+	util.HandleResponse(c.Writer, c.Request, response, "PurchaseCategoryHandler::DeletePurchaseCategory")
+}
+
+func (h *PurchaseCategoryHandler) GetPurchaseCategory(c *gin.Context) {
+	ctx := c.Request.Context()
+	contextInfo := appcontext.FromGinContext(ctx)
+
+	categoryID, err := uuid.Parse(c.Param("id"))
+	if err != nil {
+		validationResponseError := contract.NewResponseError(constants.MalformedFieldErrorCode, constants.RequestEntity, "Invalid purchase category ID")
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "PurchaseCategoryHandler::GetPurchaseCategory")
+		return
+	}
+
+	response := h.purchaseCategoryService.GetPurchaseCategoryByID(ctx, contextInfo, categoryID)
+	util.HandleResponse(c.Writer, c.Request, response, "PurchaseCategoryHandler::GetPurchaseCategory")
+}
+
+func (h *PurchaseCategoryHandler) ListPurchaseCategories(c *gin.Context) {
+	ctx := c.Request.Context()
+	contextInfo := appcontext.FromGinContext(ctx)
+
+	req := &contract.ListPurchaseCategoriesRequest{
+		Page:  1,
+		Limit: 100,
+	}
+
+	if pageStr := c.Query("page"); pageStr != "" {
+		if page, err := strconv.Atoi(pageStr); err == nil {
+			req.Page = page
+		}
+	}
+
+	if limitStr := c.Query("limit"); limitStr != "" {
+		if limit, err := strconv.Atoi(limitStr); err == nil {
+			req.Limit = limit
+		}
+	}
+
+	if parentIDStr := c.Query("parent_id"); parentIDStr != "" {
+		if parentID, err := uuid.Parse(parentIDStr); err == nil {
+			req.ParentID = &parentID
+		}
+	}
+
+	if categoryType := c.Query("type"); categoryType != "" {
+		req.Type = categoryType
+	}
+
+	if search := c.Query("search"); search != "" {
+		req.Search = search
+	}
+
+	if isActiveStr := c.Query("is_active"); isActiveStr != "" {
+		if isActive, err := strconv.ParseBool(isActiveStr); err == nil {
+			req.IsActive = &isActive
+		}
+	}
+
+	if validationError, validationErrorCode := h.purchaseCategoryValidator.ValidateListPurchaseCategoriesRequest(req); validationError != nil {
+		validationResponseError := contract.NewResponseError(validationErrorCode, constants.RequestEntity, validationError.Error())
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "PurchaseCategoryHandler::ListPurchaseCategories")
+		return
+	}
+
+	response := h.purchaseCategoryService.ListPurchaseCategories(ctx, contextInfo, req)
+	util.HandleResponse(c.Writer, c.Request, response, "PurchaseCategoryHandler::ListPurchaseCategories")
+}

internal/mappers/category_mapper.go

@@ -13,11 +13,12 @@ func CategoryEntityToModel(entity *entities.Category) *models.Category {
 	return &models.Category{
 		ID:             entity.ID,
 		OrganizationID: entity.OrganizationID,
+		OutletID:       entity.OutletID,
 		Name:           entity.Name,
 		Description:    entity.Description,
-		ImageURL:       nil,  // Entity doesn't have ImageURL, model does
-		Order:      	entity.Order,    // Entity doesn't have SortOrder, model does
-		IsActive:       true, // Entity doesn't have IsActive, default to true
+		ImageURL:       nil,
+		Order:          entity.Order,
+		IsActive:       true,
 		CreatedAt:      entity.CreatedAt,
 		UpdatedAt:      entity.UpdatedAt,
 	}
@@ -32,14 +33,14 @@ func CategoryModelToEntity(model *models.Category) *entities.Category {
 	if model.ImageURL != nil {
 		metadata["image_url"] = *model.ImageURL
 	}
-	// metadata["sort_order"] = model.SortOrder
 
 	return &entities.Category{
 		ID:             model.ID,
 		OrganizationID: model.OrganizationID,
+		OutletID:       model.OutletID,
 		Name:           model.Name,
 		Description:    model.Description,
-		BusinessType:   "restaurant", // Default business type
+		BusinessType:   "restaurant",
 		Order:          model.Order,
 		Metadata:       metadata,
 		CreatedAt:      model.CreatedAt,
@@ -56,14 +57,14 @@ func CreateCategoryRequestToEntity(req *models.CreateCategoryRequest) *entities.
 	if req.ImageURL != nil {
 		metadata["image_url"] = *req.ImageURL
 	}
-	// metadata["sort_order"] = req.SortOrder
 
 	return &entities.Category{
 		OrganizationID: req.OrganizationID,
+		OutletID:       req.OutletID,
 		Name:           req.Name,
 		Description:    req.Description,
 		Order:          req.Order,
-		BusinessType:   "restaurant", // Default business type
+		BusinessType:   "restaurant",
 		Metadata:       metadata,
 	}
 }
@@ -87,11 +88,12 @@ func CategoryEntityToResponse(entity *entities.Category) *models.CategoryRespons
 	return &models.CategoryResponse{
 		ID:             entity.ID,
 		OrganizationID: entity.OrganizationID,
+		OutletID:       entity.OutletID,
 		Name:           entity.Name,
 		Description:    entity.Description,
 		ImageURL:       imageURL,
-		Order:      	entity.Order,
-		IsActive:       true, // Default to true since entity doesn't have this field
+		Order:          entity.Order,
+		IsActive:       true,
 		CreatedAt:      entity.CreatedAt,
 		UpdatedAt:      entity.UpdatedAt,
 	}
@@ -121,6 +123,10 @@ func UpdateCategoryEntityFromRequest(entity *entities.Category, req *models.Upda
 	if req.Order != nil {
 		entity.Order = *req.Order
 	}
+
+	if req.OutletID != nil {
+		entity.OutletID = req.OutletID
+	}
 }
 
 func CategoryEntitiesToModels(entities []*entities.Category) []*models.Category {

internal/mappers/expense_mapper.go

@@ -0,0 +1,135 @@
+package mappers
+
+import (
+	"apskel-pos-be/internal/entities"
+	"apskel-pos-be/internal/models"
+)
+
+func ExpenseEntityToModel(entity *entities.Expense) *models.Expense {
+	if entity == nil {
+		return nil
+	}
+
+	return &models.Expense{
+		ID:              entity.ID,
+		OrganizationID:  entity.OrganizationID,
+		OutletID:        entity.OutletID,
+		Receiver:        entity.Receiver,
+		TransactionDate: entity.TransactionDate,
+		CodeNumber:      entity.CodeNumber,
+		Status:          entity.Status,
+		Description:     entity.Description,
+		Tax:             entity.Tax,
+		Total:           entity.Total,
+		Reserved1:       entity.Reserved1,
+		CreatedAt:       entity.CreatedAt,
+		UpdatedAt:       entity.UpdatedAt,
+	}
+}
+
+func ExpenseModelToEntity(model *models.Expense) *entities.Expense {
+	if model == nil {
+		return nil
+	}
+
+	return &entities.Expense{
+		ID:              model.ID,
+		OrganizationID:  model.OrganizationID,
+		OutletID:        model.OutletID,
+		Receiver:        model.Receiver,
+		TransactionDate: model.TransactionDate,
+		CodeNumber:      model.CodeNumber,
+		Status:          model.Status,
+		Description:     model.Description,
+		Tax:             model.Tax,
+		Total:           model.Total,
+		Reserved1:       model.Reserved1,
+		CreatedAt:       model.CreatedAt,
+		UpdatedAt:       model.UpdatedAt,
+	}
+}
+
+func ExpenseEntityToResponse(entity *entities.Expense) *models.ExpenseResponse {
+	if entity == nil {
+		return nil
+	}
+
+	resp := &models.ExpenseResponse{
+		ID:              entity.ID,
+		OrganizationID:  entity.OrganizationID,
+		OutletID:        entity.OutletID,
+		Receiver:        entity.Receiver,
+		TransactionDate: entity.TransactionDate,
+		CodeNumber:      entity.CodeNumber,
+		Status:          entity.Status,
+		Description:     entity.Description,
+		Tax:             entity.Tax,
+		Total:           entity.Total,
+		Reserved1:       entity.Reserved1,
+		CreatedAt:       entity.CreatedAt,
+		UpdatedAt:       entity.UpdatedAt,
+	}
+
+	if entity.Items != nil {
+		resp.Items = ExpenseItemEntitiesToResponses(entity.Items)
+	}
+
+	return resp
+}
+
+func ExpenseEntitiesToResponses(entities []*entities.Expense) []*models.ExpenseResponse {
+	if entities == nil {
+		return nil
+	}
+
+	responses := make([]*models.ExpenseResponse, len(entities))
+	for i, entity := range entities {
+		responses[i] = ExpenseEntityToResponse(entity)
+	}
+	return responses
+}
+
+func ExpenseItemEntityToResponse(entity *entities.ExpenseItem) *models.ExpenseItemResponse {
+	if entity == nil {
+		return nil
+	}
+
+	response := &models.ExpenseItemResponse{
+		ID:                 entity.ID,
+		ExpenseID:          entity.ExpenseID,
+		ChartOfAccountID:   entity.ChartOfAccountID,
+		PurchaseCategoryID: entity.PurchaseCategoryID,
+		Item:               entity.Item,
+		Description:        entity.Description,
+		Amount:             entity.Amount,
+		CreatedAt:          entity.CreatedAt,
+		UpdatedAt:          entity.UpdatedAt,
+	}
+
+	if entity.ChartOfAccount != nil {
+		response.ChartOfAccountName = entity.ChartOfAccount.Name
+	}
+
+	if entity.PurchaseCategory != nil {
+		response.PurchaseCategoryName = entity.PurchaseCategory.Name
+		response.PurchaseCategoryType = string(entity.PurchaseCategory.Type)
+		response.PurchaseCategory = PurchaseCategoryEntityToResponse(entity.PurchaseCategory)
+	}
+
+	return response
+}
+
+func ExpenseItemEntitiesToResponses(entities []entities.ExpenseItem) []models.ExpenseItemResponse {
+	if entities == nil {
+		return nil
+	}
+
+	responses := make([]models.ExpenseItemResponse, len(entities))
+	for i, entity := range entities {
+		response := ExpenseItemEntityToResponse(&entity)
+		if response != nil {
+			responses[i] = *response
+		}
+	}
+	return responses
+}

internal/mappers/order_mapper.go

@@ -82,7 +82,7 @@ func OrderEntityToResponse(order *entities.Order) *models.OrderResponse {
 		}
 
 		for i, item := range order.OrderItems {
-			resp := OrderItemEntityToResponse(&item)
+			resp := OrderItemEntityToResponse(&item, order.OutletID)
 			if resp != nil {
 				resp.PaidQuantity = paidQtyByOrderItem[item.ID]
 				response.OrderItems[i] = *resp
@@ -101,11 +101,20 @@ func OrderEntityToResponse(order *entities.Order) *models.OrderResponse {
 	return response
 }
 
-func OrderItemEntityToResponse(item *entities.OrderItem) *models.OrderItemResponse {
+func OrderItemEntityToResponse(item *entities.OrderItem, outletID uuid.UUID) *models.OrderItemResponse {
 	if item == nil {
 		return nil
 	}
 
+	// Resolve print_to_checker from preloaded outlet prices
+	printToChecker := true // default
+	for _, op := range item.Product.ProductOutletPrices {
+		if op.OutletID == outletID {
+			printToChecker = op.PrintToChecker
+			break
+		}
+	}
+
 	response := &models.OrderItemResponse{
 		ID:                  item.ID,
 		OrderID:             item.OrderID,
@@ -130,10 +139,19 @@ func OrderItemEntityToResponse(item *entities.OrderItem) *models.OrderItemRespon
 		CreatedAt:           item.CreatedAt,
 		UpdatedAt:           item.UpdatedAt,
 		PrinterType:         item.Product.PrinterType,
+		PrintToChecker:      printToChecker,
 	}
 
 	if item.Product.ID != uuid.Nil {
 		response.ProductName = item.Product.Name
+		if item.Product.CategoryID != uuid.Nil {
+			categoryID := item.Product.CategoryID
+			response.CategoryID = &categoryID
+		}
+		if item.Product.Category.ID != uuid.Nil {
+			categoryName := item.Product.Category.Name
+			response.CategoryName = &categoryName
+		}
 	}
 
 	if item.ProductVariant != nil {
@@ -316,14 +334,14 @@ func OrderEntitiesToResponses(orders []*entities.Order) []models.OrderResponse {
 	return responses
 }
 
-func OrderItemEntitiesToResponses(items []*entities.OrderItem) []models.OrderItemResponse {
+func OrderItemEntitiesToResponses(items []*entities.OrderItem, outletID uuid.UUID) []models.OrderItemResponse {
 	if items == nil {
 		return nil
 	}
 
 	responses := make([]models.OrderItemResponse, len(items))
 	for i, item := range items {
-		response := OrderItemEntityToResponse(item)
+		response := OrderItemEntityToResponse(item, outletID)
 		if response != nil {
 			responses[i] = *response
 		}

internal/mappers/order_mapper_test.go

@@ -45,7 +45,7 @@ func TestOrderItemEntityToResponse_WithProductNames(t *testing.T) {
 	}
 
 	// Act
-	result := OrderItemEntityToResponse(orderItem)
+	result := OrderItemEntityToResponse(orderItem, uuid.Nil)
 
 	// Assert
 	assert.NotNil(t, result)
@@ -89,7 +89,7 @@ func TestOrderItemEntityToResponse_WithoutProductVariant(t *testing.T) {
 	}
 
 	// Act
-	result := OrderItemEntityToResponse(orderItem)
+	result := OrderItemEntityToResponse(orderItem, uuid.Nil)
 
 	// Assert
 	assert.NotNil(t, result)
@@ -129,7 +129,7 @@ func TestOrderItemEntityToResponse_WithoutProductPreload(t *testing.T) {
 	}
 
 	// Act
-	result := OrderItemEntityToResponse(orderItem)
+	result := OrderItemEntityToResponse(orderItem, uuid.Nil)
 
 	// Assert
 	assert.NotNil(t, result)

internal/mappers/product_ingredient_mapper.go

@@ -11,17 +11,17 @@ func MapProductIngredientEntityToModel(entity *entities.ProductIngredient) *mode
 	}
 
 	return &models.ProductIngredient{
-		ID:               entity.ID,
-		OrganizationID:   entity.OrganizationID,
-		OutletID:         entity.OutletID,
-		ProductID:        entity.ProductID,
-		IngredientID:     entity.IngredientID,
-		Quantity:         entity.Quantity,
-		WastePercentage:  entity.WastePercentage,
-		CreatedAt:        entity.CreatedAt,
-		UpdatedAt:        entity.UpdatedAt,
-		Product:          ProductEntityToModel(entity.Product),
-		Ingredient:       MapIngredientEntityToModel(entity.Ingredient),
+		ID:              entity.ID,
+		OrganizationID:  entity.OrganizationID,
+		OutletID:        entity.OutletID,
+		ProductID:       entity.ProductID,
+		IngredientID:    entity.IngredientID,
+		Quantity:        entity.Quantity,
+		WastePercentage: entity.WastePercentage,
+		CreatedAt:       entity.CreatedAt,
+		UpdatedAt:       entity.UpdatedAt,
+		Product:         ProductEntityToModel(entity.Product),
+		Ingredient:      MapIngredientEntityToModel(entity.Ingredient),
 	}
 }
 
@@ -31,17 +31,17 @@ func MapProductIngredientModelToEntity(model *models.ProductIngredient) *entitie
 	}
 
 	return &entities.ProductIngredient{
-		ID:               model.ID,
-		OrganizationID:   model.OrganizationID,
-		OutletID:         model.OutletID,
-		ProductID:        model.ProductID,
-		IngredientID:     model.IngredientID,
-		Quantity:         model.Quantity,
-		WastePercentage:  model.WastePercentage,
-		CreatedAt:        model.CreatedAt,
-		UpdatedAt:        model.UpdatedAt,
-		Product:          ProductModelToEntity(model.Product),
-		Ingredient:       MapIngredientModelToEntity(model.Ingredient),
+		ID:              model.ID,
+		OrganizationID:  model.OrganizationID,
+		OutletID:        model.OutletID,
+		ProductID:       model.ProductID,
+		IngredientID:    model.IngredientID,
+		Quantity:        model.Quantity,
+		WastePercentage: model.WastePercentage,
+		CreatedAt:       model.CreatedAt,
+		UpdatedAt:       model.UpdatedAt,
+		Product:         ProductModelToEntity(model.Product),
+		Ingredient:      MapIngredientModelToEntity(model.Ingredient),
 	}
 }
 

internal/mappers/product_outlet_price_mapper.go

@@ -11,12 +11,13 @@ func ProductOutletPriceEntityToModel(entity *entities.ProductOutletPrice) *model
 	}
 
 	return &models.ProductOutletPrice{
-		ID:        entity.ID,
-		ProductID: entity.ProductID,
-		OutletID:  entity.OutletID,
-		Price:     entity.Price,
-		CreatedAt: entity.CreatedAt,
-		UpdatedAt: entity.UpdatedAt,
+		ID:             entity.ID,
+		ProductID:      entity.ProductID,
+		OutletID:       entity.OutletID,
+		Price:          entity.Price,
+		PrintToChecker: entity.PrintToChecker,
+		CreatedAt:      entity.CreatedAt,
+		UpdatedAt:      entity.UpdatedAt,
 	}
 }
 
@@ -26,12 +27,13 @@ func ProductOutletPriceModelToEntity(model *models.ProductOutletPrice) *entities
 	}
 
 	return &entities.ProductOutletPrice{
-		ID:        model.ID,
-		ProductID: model.ProductID,
-		OutletID:  model.OutletID,
-		Price:     model.Price,
-		CreatedAt: model.CreatedAt,
-		UpdatedAt: model.UpdatedAt,
+		ID:             model.ID,
+		ProductID:      model.ProductID,
+		OutletID:       model.OutletID,
+		Price:          model.Price,
+		PrintToChecker: model.PrintToChecker,
+		CreatedAt:      model.CreatedAt,
+		UpdatedAt:      model.UpdatedAt,
 	}
 }
 

internal/mappers/purchase_category_mapper.go

@@ -0,0 +1,53 @@
+package mappers
+
+import (
+	"apskel-pos-be/internal/entities"
+	"apskel-pos-be/internal/models"
+)
+
+func CreatePurchaseCategoryRequestToEntity(req *models.CreatePurchaseCategoryRequest) *entities.PurchaseCategory {
+	if req == nil {
+		return nil
+	}
+
+	return &entities.PurchaseCategory{
+		OrganizationID: req.OrganizationID,
+		ParentID:       req.ParentID,
+		Name:           req.Name,
+		Type:           entities.PurchaseCategoryType(req.Type),
+		SortOrder:      req.SortOrder,
+		IsActive:       req.IsActive,
+	}
+}
+
+func PurchaseCategoryEntityToResponse(entity *entities.PurchaseCategory) *models.PurchaseCategoryResponse {
+	if entity == nil {
+		return nil
+	}
+
+	return &models.PurchaseCategoryResponse{
+		ID:             entity.ID,
+		OrganizationID: entity.OrganizationID,
+		PresetID:       entity.PresetID,
+		ParentID:       entity.ParentID,
+		Code:           entity.Code,
+		Name:           entity.Name,
+		Type:           string(entity.Type),
+		SortOrder:      entity.SortOrder,
+		IsSystem:       entity.IsSystem,
+		IsActive:       entity.IsActive,
+		CreatedAt:      entity.CreatedAt,
+		UpdatedAt:      entity.UpdatedAt,
+	}
+}
+
+func PurchaseCategoryEntitiesToResponses(categoryEntities []*entities.PurchaseCategory) []models.PurchaseCategoryResponse {
+	responses := make([]models.PurchaseCategoryResponse, len(categoryEntities))
+	for i, entity := range categoryEntities {
+		response := PurchaseCategoryEntityToResponse(entity)
+		if response != nil {
+			responses[i] = *response
+		}
+	}
+	return responses
+}

internal/mappers/purchase_order_mapper.go

@@ -91,15 +91,16 @@ func PurchaseOrderItemEntityToModel(entity *entities.PurchaseOrderItem) *models.
 	}
 
 	return &models.PurchaseOrderItem{
-		ID:              entity.ID,
-		PurchaseOrderID: entity.PurchaseOrderID,
-		IngredientID:    entity.IngredientID,
-		Description:     entity.Description,
-		Quantity:        entity.Quantity,
-		UnitID:          entity.UnitID,
-		Amount:          entity.Amount,
-		CreatedAt:       entity.CreatedAt,
-		UpdatedAt:       entity.UpdatedAt,
+		ID:                 entity.ID,
+		PurchaseOrderID:    entity.PurchaseOrderID,
+		IngredientID:       entity.IngredientID,
+		PurchaseCategoryID: entity.PurchaseCategoryID,
+		Description:        entity.Description,
+		Quantity:           entity.Quantity,
+		UnitID:             entity.UnitID,
+		Amount:             entity.Amount,
+		CreatedAt:          entity.CreatedAt,
+		UpdatedAt:          entity.UpdatedAt,
 	}
 }
 
@@ -109,15 +110,16 @@ func PurchaseOrderItemModelToEntity(model *models.PurchaseOrderItem) *entities.P
 	}
 
 	return &entities.PurchaseOrderItem{
-		ID:              model.ID,
-		PurchaseOrderID: model.PurchaseOrderID,
-		IngredientID:    model.IngredientID,
-		Description:     model.Description,
-		Quantity:        model.Quantity,
-		UnitID:          model.UnitID,
-		Amount:          model.Amount,
-		CreatedAt:       model.CreatedAt,
-		UpdatedAt:       model.UpdatedAt,
+		ID:                 model.ID,
+		PurchaseOrderID:    model.PurchaseOrderID,
+		IngredientID:       model.IngredientID,
+		PurchaseCategoryID: model.PurchaseCategoryID,
+		Description:        model.Description,
+		Quantity:           model.Quantity,
+		UnitID:             model.UnitID,
+		Amount:             model.Amount,
+		CreatedAt:          model.CreatedAt,
+		UpdatedAt:          model.UpdatedAt,
 	}
 }
 
@@ -127,15 +129,16 @@ func PurchaseOrderItemEntityToResponse(entity *entities.PurchaseOrderItem) *mode
 	}
 
 	response := &models.PurchaseOrderItemResponse{
-		ID:              entity.ID,
-		PurchaseOrderID: entity.PurchaseOrderID,
-		IngredientID:    entity.IngredientID,
-		Description:     entity.Description,
-		Quantity:        entity.Quantity,
-		UnitID:          entity.UnitID,
-		Amount:          entity.Amount,
-		CreatedAt:       entity.CreatedAt,
-		UpdatedAt:       entity.UpdatedAt,
+		ID:                 entity.ID,
+		PurchaseOrderID:    entity.PurchaseOrderID,
+		IngredientID:       entity.IngredientID,
+		PurchaseCategoryID: entity.PurchaseCategoryID,
+		Description:        entity.Description,
+		Quantity:           entity.Quantity,
+		UnitID:             entity.UnitID,
+		Amount:             entity.Amount,
+		CreatedAt:          entity.CreatedAt,
+		UpdatedAt:          entity.UpdatedAt,
 	}
 
 	// Map ingredient if present
@@ -146,6 +149,10 @@ func PurchaseOrderItemEntityToResponse(entity *entities.PurchaseOrderItem) *mode
 		}
 	}
 
+	if entity.PurchaseCategory != nil {
+		response.PurchaseCategory = PurchaseCategoryEntityToResponse(entity.PurchaseCategory)
+	}
+
 	// Map unit if present
 	if entity.Unit != nil {
 		response.Unit = &models.UnitResponse{

internal/middleware/idempotency.go

@@ -0,0 +1,137 @@
+package middleware
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"github.com/redis/go-redis/v9"
+)
+
+const (
+	IdempotencyKeyHeader = "X-Idempotency-Key"
+	idempotencyTTL       = 24 * time.Hour
+	idempotencyPrefix    = "idempotency:"
+)
+
+type cachedResponse struct {
+	StatusCode int               `json:"status_code"`
+	Headers    map[string]string `json:"headers"`
+	Body       string            `json:"body"`
+}
+
+// IdempotencyMiddleware returns a Gin middleware that ensures idempotent processing
+// for mutating operations. Client must send X-Idempotency-Key header.
+func IdempotencyMiddleware(redisClient *redis.Client) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		key := c.GetHeader(IdempotencyKeyHeader)
+		if key == "" {
+			c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{
+				"success": false,
+				"errors": []gin.H{
+					{
+						"code":   "missing_idempotency_key",
+						"entity": "IdempotencyMiddleware",
+						"cause":  "X-Idempotency-Key header is required",
+					},
+				},
+			})
+			return
+		}
+
+		redisKey := fmt.Sprintf("%s%s", idempotencyPrefix, key)
+		ctx := context.Background()
+
+		fmt.Printf("[DEBUG] IdempotencyMiddleware: key=%s redisKey=%s\n", key, redisKey)
+
+		// Check if key already exists (request was already processed)
+		cached, err := redisClient.Get(ctx, redisKey).Result()
+		if err == nil {
+			// Key exists — return cached response
+			fmt.Printf("[DEBUG] IdempotencyMiddleware: cache HIT for key=%s\n", key)
+			var resp cachedResponse
+			if err := json.Unmarshal([]byte(cached), &resp); err == nil {
+				for k, v := range resp.Headers {
+					c.Writer.Header().Set(k, v)
+				}
+				c.Writer.Header().Set("X-Idempotent-Replay", "true")
+				c.Data(resp.StatusCode, "application/json", []byte(resp.Body))
+				c.Abort()
+				return
+			}
+		} else {
+			fmt.Printf("[DEBUG] IdempotencyMiddleware: cache MISS for key=%s err=%v\n", key, err)
+		}
+
+		// Mark key as in-progress to prevent concurrent duplicates
+		set, err := redisClient.SetNX(ctx, redisKey, "processing", idempotencyTTL).Result()
+		if err != nil {
+			// Redis error — proceed without idempotency (fail open)
+			c.Next()
+			return
+		}
+		if !set {
+			// Another request with the same key is being processed
+			c.AbortWithStatusJSON(http.StatusConflict, gin.H{
+				"success": false,
+				"errors": []gin.H{
+					{
+						"code":   "request_in_progress",
+						"entity": "IdempotencyMiddleware",
+						"cause":  "A request with this idempotency key is already being processed",
+					},
+				},
+			})
+			return
+		}
+
+		// Capture response using a custom writer
+		writer := &responseCapture{
+			ResponseWriter: c.Writer,
+			body:           &bytes.Buffer{},
+		}
+		c.Writer = writer
+
+		c.Next()
+
+		// After handler completes, cache the response only if successful (2xx)
+		statusCode := writer.Status()
+		if statusCode >= 200 && statusCode < 300 {
+			resp := cachedResponse{
+				StatusCode: statusCode,
+				Headers: map[string]string{
+					"Content-Type": writer.Header().Get("Content-Type"),
+				},
+				Body: writer.body.String(),
+			}
+
+			respJSON, err := json.Marshal(resp)
+			if err == nil {
+				redisClient.Set(ctx, redisKey, string(respJSON), idempotencyTTL)
+			}
+		} else {
+			// Remove the in-progress key so the client can retry with the same key
+			redisClient.Del(ctx, redisKey)
+		}
+	}
+}
+
+// responseCapture wraps gin.ResponseWriter to capture the response body
+type responseCapture struct {
+	gin.ResponseWriter
+	body *bytes.Buffer
+}
+
+func (w *responseCapture) Write(b []byte) (int, error) {
+	w.body.Write(b)
+	return w.ResponseWriter.Write(b)
+}
+
+func (w *responseCapture) WriteString(s string) (int, error) {
+	w.body.WriteString(s)
+	return w.ResponseWriter.WriteString(s)
+}

internal/models/account.go

@@ -25,12 +25,12 @@ type AccountResponse struct {
 }
 
 type CreateAccountRequest struct {
-	ChartOfAccountID uuid.UUID  `json:"chart_of_account_id" validate:"required"`
-	Name             string     `json:"name" validate:"required,min=1,max=255"`
-	Number           string     `json:"number" validate:"required,min=1,max=50"`
-	AccountType      string     `json:"account_type" validate:"required,oneof=cash wallet bank credit debit asset liability equity revenue expense"`
-	OpeningBalance   float64    `json:"opening_balance"`
-	Description      *string    `json:"description"`
+	ChartOfAccountID uuid.UUID `json:"chart_of_account_id" validate:"required"`
+	Name             string    `json:"name" validate:"required,min=1,max=255"`
+	Number           string    `json:"number" validate:"required,min=1,max=50"`
+	AccountType      string    `json:"account_type" validate:"required,oneof=cash wallet bank credit debit asset liability equity revenue expense"`
+	OpeningBalance   float64   `json:"opening_balance"`
+	Description      *string   `json:"description"`
 }
 
 type UpdateAccountRequest struct {

internal/models/analytics.go

@@ -87,6 +87,77 @@ type SalesAnalyticsData struct {
 	NetSales float64   `json:"net_sales"`
 }
 
+// PurchasingAnalyticsRequest represents the request for purchasing analytics
+type PurchasingAnalyticsRequest struct {
+	OrganizationID uuid.UUID  `validate:"required"`
+	OutletID       *uuid.UUID `validate:"omitempty"`
+	DateFrom       time.Time  `validate:"required"`
+	DateTo         time.Time  `validate:"required"`
+	GroupBy        string     `validate:"omitempty,oneof=day hour week month"`
+}
+
+// PurchasingAnalyticsResponse represents the response for purchasing analytics
+type PurchasingAnalyticsResponse struct {
+	OrganizationID uuid.UUID                  `json:"organization_id"`
+	OutletID       *uuid.UUID                 `json:"outlet_id,omitempty"`
+	OutletName     *string                    `json:"outlet_name,omitempty"`
+	DateFrom       time.Time                  `json:"date_from"`
+	DateTo         time.Time                  `json:"date_to"`
+	GroupBy        string                     `json:"group_by"`
+	Summary        PurchasingSummary          `json:"summary"`
+	Data           []PurchasingAnalyticsData  `json:"data"`
+	IngredientData []PurchasingIngredientData `json:"ingredient_data"`
+	VendorData     []PurchasingVendorData     `json:"vendor_data"`
+}
+
+// PurchasingSummary represents the summary of purchasing analytics
+type PurchasingSummary struct {
+	TotalPurchases            float64 `json:"total_purchases"`
+	RawMaterialPurchases      float64 `json:"raw_material_purchases"`
+	ExpensePurchases          float64 `json:"expense_purchases"`
+	TotalPurchaseOrders       int64   `json:"total_purchase_orders"`
+	RawMaterialPurchaseOrders int64   `json:"raw_material_purchase_orders"`
+	ExpenseCount              int64   `json:"expense_count"`
+	TotalQuantity             float64 `json:"total_quantity"`
+	AveragePurchaseOrderValue float64 `json:"average_purchase_order_value"`
+	TotalIngredients          int64   `json:"total_ingredients"`
+	TotalVendors              int64   `json:"total_vendors"`
+}
+
+// PurchasingAnalyticsData represents purchasing analytics by time period
+type PurchasingAnalyticsData struct {
+	Date                      time.Time `json:"date"`
+	Purchases                 float64   `json:"purchases"`
+	RawMaterialPurchases      float64   `json:"raw_material_purchases"`
+	ExpensePurchases          float64   `json:"expense_purchases"`
+	PurchaseOrders            int64     `json:"purchase_orders"`
+	RawMaterialPurchaseOrders int64     `json:"raw_material_purchase_orders"`
+	ExpenseCount              int64     `json:"expense_count"`
+	Quantity                  float64   `json:"quantity"`
+	Ingredients               int64     `json:"ingredients"`
+	Vendors                   int64     `json:"vendors"`
+}
+
+// PurchasingIngredientData represents purchasing analytics for an ingredient
+type PurchasingIngredientData struct {
+	IngredientID       uuid.UUID `json:"ingredient_id"`
+	IngredientName     string    `json:"ingredient_name"`
+	Quantity           float64   `json:"quantity"`
+	TotalCost          float64   `json:"total_cost"`
+	AverageUnitCost    float64   `json:"average_unit_cost"`
+	PurchaseOrderCount int64     `json:"purchase_order_count"`
+}
+
+// PurchasingVendorData represents purchasing analytics for a vendor
+type PurchasingVendorData struct {
+	VendorID           uuid.UUID `json:"vendor_id"`
+	VendorName         string    `json:"vendor_name"`
+	TotalCost          float64   `json:"total_cost"`
+	PurchaseOrderCount int64     `json:"purchase_order_count"`
+	IngredientCount    int64     `json:"ingredient_count"`
+	Quantity           float64   `json:"quantity"`
+}
+
 // ProductAnalyticsRequest represents the request for product analytics
 type ProductAnalyticsRequest struct {
 	OrganizationID uuid.UUID  `validate:"required"`
@@ -109,6 +180,7 @@ type ProductAnalyticsData struct {
 	ProductID               uuid.UUID `json:"product_id"`
 	ProductName             string    `json:"product_name"`
 	ProductSku              string    `json:"product_sku"`
+	ProductPrice            float64   `json:"product_price"`
 	CategoryID              uuid.UUID `json:"category_id"`
 	CategoryName            string    `json:"category_name"`
 	CategoryOrder           int       `json:"category_order"`
@@ -183,7 +255,6 @@ type DashboardOverview struct {
 	RefundedOrders    int64   `json:"refunded_orders"`
 }
 
-// ProfitLossAnalyticsRequest represents the request for profit and loss analytics
 type ProfitLossAnalyticsRequest struct {
 	OrganizationID uuid.UUID  `validate:"required"`
 	OutletID       *uuid.UUID `validate:"omitempty"`
@@ -192,19 +263,20 @@ type ProfitLossAnalyticsRequest struct {
 	GroupBy        string     `validate:"omitempty,oneof=day hour week month"`
 }
 
-// ProfitLossAnalyticsResponse represents the response for profit and loss analytics
 type ProfitLossAnalyticsResponse struct {
-	OrganizationID uuid.UUID           `json:"organization_id"`
-	OutletID       *uuid.UUID          `json:"outlet_id,omitempty"`
-	DateFrom       time.Time           `json:"date_from"`
-	DateTo         time.Time           `json:"date_to"`
-	GroupBy        string              `json:"group_by"`
-	Summary        ProfitLossSummary   `json:"summary"`
-	Data           []ProfitLossData    `json:"data"`
-	ProductData    []ProductProfitData `json:"product_data"`
+	OrganizationID           uuid.UUID                `json:"organization_id"`
+	OutletID                 *uuid.UUID               `json:"outlet_id,omitempty"`
+	DateFrom                 time.Time                `json:"date_from"`
+	DateTo                   time.Time                `json:"date_to"`
+	GroupBy                  string                   `json:"group_by"`
+	Summary                  ProfitLossSummary        `json:"summary"`
+	Data                     []ProfitLossData         `json:"data"`
+	ProductData              []ProductProfitData      `json:"product_data"`
+	MainSummary              []ProfitLossSummaryRow   `json:"main_summary"`
+	OperationalExpenses      []OperationalExpenseItem `json:"operational_expenses"`
+	OperationalExpensesTotal float64                  `json:"operational_expenses_total"`
 }
 
-// ProfitLossSummary represents the summary of profit and loss analytics
 type ProfitLossSummary struct {
 	TotalRevenue       float64 `json:"total_revenue"`
 	TotalCost          float64 `json:"total_cost"`
@@ -219,7 +291,6 @@ type ProfitLossSummary struct {
 	ProfitabilityRatio float64 `json:"profitability_ratio"`
 }
 
-// ProfitLossData represents individual profit and loss data point by time period
 type ProfitLossData struct {
 	Date              time.Time `json:"date"`
 	Revenue           float64   `json:"revenue"`
@@ -233,7 +304,6 @@ type ProfitLossData struct {
 	Orders            int64     `json:"orders"`
 }
 
-// ProductProfitData represents profit data for individual products
 type ProductProfitData struct {
 	ProductID         uuid.UUID `json:"product_id"`
 	ProductName       string    `json:"product_name"`
@@ -248,3 +318,130 @@ type ProductProfitData struct {
 	AverageCost       float64   `json:"average_cost"`
 	ProfitPerUnit     float64   `json:"profit_per_unit"`
 }
+
+type ProfitLossSummaryRow struct {
+	ID           string                 `json:"id"`
+	Label        string                 `json:"label"`
+	IsBold       bool                   `json:"is_bold"`
+	TodayNominal float64                `json:"today_nominal"`
+	TodayPct     float64                `json:"today_pct"`
+	MtdNominal   float64                `json:"mtd_nominal"`
+	MtdPct       float64                `json:"mtd_pct"`
+	SubItems     []ProfitLossSummaryRow `json:"sub_items,omitempty"`
+}
+
+type OperationalExpenseItem struct {
+	Item    string  `json:"item"`
+	Nominal float64 `json:"nominal"`
+}
+
+type ExclusiveSummaryPeriodRequest struct {
+	OrganizationID                uuid.UUID  `validate:"required"`
+	OutletID                      *uuid.UUID `validate:"omitempty"`
+	DateFrom                      time.Time  `validate:"required"`
+	DateTo                        time.Time  `validate:"required"`
+	ExcludeGajiStaffFromReimburse bool       `validate:"omitempty"`
+}
+
+type ExclusiveSummaryMonthlyRequest struct {
+	OrganizationID uuid.UUID  `validate:"required"`
+	OutletID       *uuid.UUID `validate:"omitempty"`
+	Month          time.Time  `validate:"required"`
+}
+
+type ExclusiveSummaryPeriodResponse struct {
+	OrganizationID              uuid.UUID                           `json:"organization_id"`
+	OutletID                    *uuid.UUID                          `json:"outlet_id,omitempty"`
+	Period                      ExclusiveSummaryPeriodRange         `json:"period"`
+	Summary                     ExclusiveSummaryPeriodSummary       `json:"summary"`
+	Reimburse                   ExclusiveSummaryReimburse           `json:"reimburse"`
+	HPPBreakdown                []ExclusiveSummaryCategoryBreakdown `json:"hpp_breakdown"`
+	OperationalExpenseBreakdown []ExclusiveSummaryCategoryBreakdown `json:"operational_expense_breakdown"`
+	DailySummary                []ExclusiveSummaryDailySummary      `json:"daily_summary"`
+	DailyTransactions           []ExclusiveSummaryDailyTransaction  `json:"daily_transactions"`
+}
+
+type ExclusiveSummaryPeriodRange struct {
+	DateFrom time.Time `json:"date_from"`
+	DateTo   time.Time `json:"date_to"`
+}
+
+type ExclusiveSummaryPeriodSummary struct {
+	Sales                    float64 `json:"sales"`
+	HPP                      float64 `json:"hpp"`
+	GrossProfit              float64 `json:"gross_profit"`
+	SalaryTotal              float64 `json:"salary_total"`
+	SalaryDW                 float64 `json:"salary_dw"`
+	SalaryStaff              float64 `json:"salary_staff"`
+	SalaryOther              float64 `json:"salary_other"`
+	OtherOperationalExpenses float64 `json:"other_operational_expenses"`
+	OperationalExpensesTotal float64 `json:"operational_expenses_total"`
+	TotalCost                float64 `json:"total_cost"`
+	NetProfit                float64 `json:"net_profit"`
+}
+
+type ExclusiveSummaryReimburse struct {
+	TotalCost           float64 `json:"total_cost"`
+	ExcludedSalaryStaff float64 `json:"excluded_salary_staff"`
+	TotalReimburse      float64 `json:"total_reimburse"`
+}
+
+type ExclusiveSummaryCategoryBreakdown struct {
+	CategoryCode string  `json:"category_code"`
+	CategoryName string  `json:"category_name"`
+	Amount       float64 `json:"amount"`
+	Percentage   float64 `json:"percentage"`
+}
+
+type ExclusiveSummaryDailySummary struct {
+	Date             time.Time `json:"date"`
+	TransactionCount int64     `json:"transaction_count"`
+	TotalCost        float64   `json:"total_cost"`
+}
+
+type ExclusiveSummaryDailyTransaction struct {
+	Date         time.Time `json:"date"`
+	CategoryCode string    `json:"category_code"`
+	CategoryName string    `json:"category_name"`
+	Description  string    `json:"description"`
+	Amount       float64   `json:"amount"`
+	Source       string    `json:"source"`
+}
+
+type ExclusiveSummaryMonthlyResponse struct {
+	OrganizationID uuid.UUID                       `json:"organization_id"`
+	OutletID       *uuid.UUID                      `json:"outlet_id,omitempty"`
+	Month          string                          `json:"month"`
+	Summary        ExclusiveSummaryMonthlySummary  `json:"summary"`
+	Periods        []ExclusiveSummaryMonthlyPeriod `json:"periods"`
+	BankBalance    []ExclusiveSummaryBankBalance   `json:"bank_balance"`
+}
+
+type ExclusiveSummaryMonthlySummary struct {
+	TotalSales               float64 `json:"total_sales"`
+	HPP                      float64 `json:"hpp"`
+	GrossProfit              float64 `json:"gross_profit"`
+	OperationalExpensesTotal float64 `json:"operational_expenses_total"`
+	TotalCost                float64 `json:"total_cost"`
+	NetProfit                float64 `json:"net_profit"`
+	NetProfitMargin          float64 `json:"net_profit_margin"`
+}
+
+type ExclusiveSummaryMonthlyPeriod struct {
+	Label       string    `json:"label"`
+	DateFrom    time.Time `json:"date_from"`
+	DateTo      time.Time `json:"date_to"`
+	Sales       float64   `json:"sales"`
+	HPP         float64   `json:"hpp"`
+	GrossProfit float64   `json:"gross_profit"`
+	GrossMargin float64   `json:"gross_margin"`
+}
+
+type ExclusiveSummaryBankBalance struct {
+	Bank             string   `json:"bank"`
+	OpeningBalance   *float64 `json:"opening_balance"`
+	IncomingMutation *float64 `json:"incoming_mutation"`
+	OutgoingMutation *float64 `json:"outgoing_mutation"`
+	ClosingBalance   *float64 `json:"closing_balance"`
+	Notes            *string  `json:"notes"`
+}

internal/models/category.go

@@ -9,10 +9,11 @@ import (
 type Category struct {
 	ID             uuid.UUID
 	OrganizationID uuid.UUID
+	OutletID       *uuid.UUID
 	Name           string
 	Description    *string
 	ImageURL       *string
-	Order      	   int
+	Order          int
 	IsActive       bool
 	CreatedAt      time.Time
 	UpdatedAt      time.Time
@@ -20,27 +21,30 @@ type Category struct {
 
 type CreateCategoryRequest struct {
 	OrganizationID uuid.UUID `validate:"required"`
-	Name           string    `validate:"required,min=1,max=255"`
-	Description    *string   `validate:"omitempty,max=1000"`
-	ImageURL       *string   `validate:"omitempty,url"`
-	Order      	   int       `validate:"min=0"`
+	OutletID       *uuid.UUID
+	Name           string  `validate:"required,min=1,max=255"`
+	Description    *string `validate:"omitempty,max=1000"`
+	ImageURL       *string `validate:"omitempty,url"`
+	Order          int     `validate:"min=0"`
 }
 
 type UpdateCategoryRequest struct {
 	Name        *string `validate:"omitempty,min=1,max=255"`
 	Description *string `validate:"omitempty,max=1000"`
 	ImageURL    *string `validate:"omitempty,url"`
-	Order       *int    `validate:"omitempty,min=0"`
+	OutletID    *uuid.UUID
+	Order       *int `validate:"omitempty,min=0"`
 	IsActive    *bool
 }
 
 type CategoryResponse struct {
 	ID             uuid.UUID
 	OrganizationID uuid.UUID
+	OutletID       *uuid.UUID
 	Name           string
 	Description    *string
 	ImageURL       *string
-	Order      int
+	Order          int
 	IsActive       bool
 	CreatedAt      time.Time
 	UpdatedAt      time.Time

internal/models/customer.go

@@ -23,17 +23,17 @@ type UpdateCustomerRequest struct {
 }
 
 type CustomerResponse struct {
-	ID             uuid.UUID `json:"id"`
-	OrganizationID uuid.UUID `json:"organization_id"`
-	Name           string    `json:"name"`
-	Email          *string   `json:"email,omitempty"`
-	Phone          *string   `json:"phone,omitempty"`
-	Address        *string   `json:"address,omitempty"`
-	IsDefault      bool      `json:"is_default"`
-	IsActive       bool      `json:"is_active"`
-	Metadata       entities.Metadata  `json:"metadata"`
-	CreatedAt      time.Time `json:"created_at"`
-	UpdatedAt      time.Time `json:"updated_at"`
+	ID             uuid.UUID         `json:"id"`
+	OrganizationID uuid.UUID         `json:"organization_id"`
+	Name           string            `json:"name"`
+	Email          *string           `json:"email,omitempty"`
+	Phone          *string           `json:"phone,omitempty"`
+	Address        *string           `json:"address,omitempty"`
+	IsDefault      bool              `json:"is_default"`
+	IsActive       bool              `json:"is_active"`
+	Metadata       entities.Metadata `json:"metadata"`
+	CreatedAt      time.Time         `json:"created_at"`
+	UpdatedAt      time.Time         `json:"updated_at"`
 }
 
 // ListCustomersQuery represents query parameters for listing customers

internal/models/expense.go

@@ -0,0 +1,190 @@
+package models
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+)
+
+type Expense struct {
+	ID              uuid.UUID `json:"id"`
+	OrganizationID  uuid.UUID `json:"organization_id"`
+	OutletID        uuid.UUID `json:"outlet_id"`
+	Receiver        string    `json:"receiver"`
+	TransactionDate time.Time `json:"transaction_date"`
+	CodeNumber      string    `json:"code_number"`
+	Status          string    `json:"status"`
+	Description     *string   `json:"description"`
+	Tax             float64   `json:"tax"`
+	Total           float64   `json:"total"`
+	Reserved1       *string   `json:"reserved1"`
+	CreatedAt       time.Time `json:"created_at"`
+	UpdatedAt       time.Time `json:"updated_at"`
+}
+
+type ExpenseItem struct {
+	ID                 uuid.UUID `json:"id"`
+	ExpenseID          uuid.UUID `json:"expense_id"`
+	ChartOfAccountID   uuid.UUID `json:"chart_of_account_id"`
+	PurchaseCategoryID uuid.UUID `json:"purchase_category_id"`
+	Item               string    `json:"item"`
+	Description        *string   `json:"description"`
+	Amount             float64   `json:"amount"`
+	CreatedAt          time.Time `json:"created_at"`
+	UpdatedAt          time.Time `json:"updated_at"`
+}
+
+type ExpenseResponse struct {
+	ID              uuid.UUID             `json:"id"`
+	OrganizationID  uuid.UUID             `json:"organization_id"`
+	OutletID        uuid.UUID             `json:"outlet_id"`
+	Receiver        string                `json:"receiver"`
+	TransactionDate time.Time             `json:"transaction_date"`
+	CodeNumber      string                `json:"code_number"`
+	Status          string                `json:"status"`
+	Description     *string               `json:"description"`
+	Tax             float64               `json:"tax"`
+	Total           float64               `json:"total"`
+	Reserved1       *string               `json:"reserved1"`
+	CreatedAt       time.Time             `json:"created_at"`
+	UpdatedAt       time.Time             `json:"updated_at"`
+	Items           []ExpenseItemResponse `json:"items,omitempty"`
+}
+
+type ExpenseItemResponse struct {
+	ID                   uuid.UUID                 `json:"id"`
+	ExpenseID            uuid.UUID                 `json:"expense_id"`
+	ChartOfAccountID     uuid.UUID                 `json:"chart_of_account_id"`
+	ChartOfAccountName   string                    `json:"chart_of_account_name,omitempty"`
+	PurchaseCategoryID   uuid.UUID                 `json:"purchase_category_id"`
+	PurchaseCategoryName string                    `json:"purchase_category_name,omitempty"`
+	PurchaseCategoryType string                    `json:"purchase_category_type,omitempty"`
+	PurchaseCategory     *PurchaseCategoryResponse `json:"purchase_category,omitempty"`
+	Item                 string                    `json:"item"`
+	Description          *string                   `json:"description"`
+	Amount               float64                   `json:"amount"`
+	CreatedAt            time.Time                 `json:"created_at"`
+	UpdatedAt            time.Time                 `json:"updated_at"`
+}
+
+type CreateExpenseRequest struct {
+	Receiver        string                     `json:"receiver"`
+	TransactionDate string                     `json:"transaction_date"`
+	CodeNumber      string                     `json:"code_number"`
+	OutletID        string                     `json:"outlet_id"`
+	Status          *string                    `json:"status,omitempty"`
+	Description     *string                    `json:"description"`
+	Tax             float64                    `json:"tax"`
+	Total           float64                    `json:"total"`
+	Items           []CreateExpenseItemRequest `json:"items"`
+}
+
+type CreateExpenseItemRequest struct {
+	ChartOfAccountID   string  `json:"chart_of_account_id"`
+	PurchaseCategoryID string  `json:"purchase_category_id"`
+	Item               string  `json:"item"`
+	Description        *string `json:"description,omitempty"`
+	Amount             float64 `json:"amount"`
+}
+
+type UpdateExpenseRequest struct {
+	Receiver        *string                    `json:"receiver,omitempty"`
+	TransactionDate *string                    `json:"transaction_date,omitempty"`
+	CodeNumber      *string                    `json:"code_number,omitempty"`
+	OutletID        *string                    `json:"outlet_id,omitempty"`
+	Status          *string                    `json:"status,omitempty"`
+	Description     *string                    `json:"description,omitempty"`
+	Tax             *float64                   `json:"tax,omitempty"`
+	Total           *float64                   `json:"total,omitempty"`
+	Reserved1       *string                    `json:"reserved1,omitempty"`
+	Items           []UpdateExpenseItemRequest `json:"items,omitempty"`
+}
+
+type UpdateExpenseItemRequest struct {
+	ChartOfAccountID   *string  `json:"chart_of_account_id,omitempty"`
+	PurchaseCategoryID *string  `json:"purchase_category_id,omitempty"`
+	Item               *string  `json:"item,omitempty"`
+	Description        *string  `json:"description,omitempty"`
+	Amount             *float64 `json:"amount,omitempty"`
+}
+
+type ListExpenseRequest struct {
+	Page      int    `json:"page"`
+	Limit     int    `json:"limit"`
+	Search    string `json:"search,omitempty"`
+	OutletID  string `json:"outlet_id,omitempty"`
+	Status    string `json:"status,omitempty"`
+	StartDate string `json:"start_date,omitempty"`
+	EndDate   string `json:"end_date,omitempty"`
+}
+
+type ListExpenseResponse struct {
+	Expenses   []*ExpenseResponse `json:"expenses"`
+	TotalCount int                `json:"total_count"`
+	Page       int                `json:"page"`
+	Limit      int                `json:"limit"`
+	TotalPages int                `json:"total_pages"`
+}
+
+type ExpenseAnalyticsRequest struct {
+	OrganizationID uuid.UUID  `json:"organization_id"`
+	OutletID       *uuid.UUID `json:"outlet_id,omitempty"`
+	DateFrom       time.Time  `json:"date_from"`
+	DateTo         time.Time  `json:"date_to"`
+	GroupBy        string     `json:"group_by"`
+}
+
+type ExpenseAnalyticsResponse struct {
+	OrganizationID     uuid.UUID                            `json:"organization_id"`
+	OutletID           *uuid.UUID                           `json:"outlet_id,omitempty"`
+	DateFrom           time.Time                            `json:"date_from"`
+	DateTo             time.Time                            `json:"date_to"`
+	GroupBy            string                               `json:"group_by"`
+	Summary            ExpenseAnalyticsSummary              `json:"summary"`
+	Data               []ExpenseAnalyticsData               `json:"data"`
+	CategoryData       []ExpenseAnalyticsCategoryData       `json:"category_data"`
+	ChartOfAccountData []ExpenseAnalyticsChartOfAccountData `json:"chart_of_account_data"`
+	ItemData           []ExpenseAnalyticsItemData           `json:"item_data"`
+}
+
+type ExpenseAnalyticsSummary struct {
+	TotalExpenses       float64 `json:"total_expenses"`
+	TotalExpenseCount   int64   `json:"total_expense_count"`
+	TotalTax            float64 `json:"total_tax"`
+	AverageExpenseValue float64 `json:"average_expense_value"`
+	TotalCategories     int64   `json:"total_categories"`
+	TotalItems          int64   `json:"total_items"`
+}
+
+type ExpenseAnalyticsData struct {
+	Date         time.Time `json:"date"`
+	Expenses     float64   `json:"expenses"`
+	ExpenseCount int64     `json:"expense_count"`
+	Tax          float64   `json:"tax"`
+	Items        int64     `json:"items"`
+	Categories   int64     `json:"categories"`
+}
+
+type ExpenseAnalyticsCategoryData struct {
+	PurchaseCategoryID   uuid.UUID `json:"purchase_category_id"`
+	PurchaseCategoryName string    `json:"purchase_category_name"`
+	PurchaseCategoryType string    `json:"purchase_category_type"`
+	TotalAmount          float64   `json:"total_amount"`
+	ExpenseCount         int64     `json:"expense_count"`
+	ItemCount            int64     `json:"item_count"`
+}
+
+type ExpenseAnalyticsChartOfAccountData struct {
+	ChartOfAccountID   uuid.UUID `json:"chart_of_account_id"`
+	ChartOfAccountName string    `json:"chart_of_account_name"`
+	TotalAmount        float64   `json:"total_amount"`
+	ExpenseCount       int64     `json:"expense_count"`
+	ItemCount          int64     `json:"item_count"`
+}
+
+type ExpenseAnalyticsItemData struct {
+	Item         string  `json:"item"`
+	TotalAmount  float64 `json:"total_amount"`
+	ExpenseCount int64   `json:"expense_count"`
+	ItemCount    int64   `json:"item_count"`
+}

internal/models/ingredient_unit_converter.go

@@ -101,4 +101,3 @@ type IngredientUnitsResponse struct {
 	BaseUnitName   string          `json:"base_unit_name"`
 	Units          []*UnitResponse `json:"units"`
 }
-

internal/models/order.go

@@ -188,6 +188,8 @@ type OrderItemResponse struct {
 	ProductName         string
 	ProductVariantID    *uuid.UUID
 	ProductVariantName  *string
+	CategoryID          *uuid.UUID
+	CategoryName        *string
 	Quantity            int
 	UnitPrice           float64
 	TotalPrice          float64
@@ -207,6 +209,7 @@ type OrderItemResponse struct {
 	CreatedAt           time.Time
 	UpdatedAt           time.Time
 	PrinterType         string
+	PrintToChecker      bool
 	PaidQuantity        int
 }
 

internal/models/order_ingredient_transaction.go

@@ -52,8 +52,8 @@ type UpdateOrderIngredientTransactionRequest struct {
 	GrossQty        *float64   `json:"gross_qty,omitempty" validate:"omitempty,gt=0"`
 	NetQty          *float64   `json:"net_qty,omitempty" validate:"omitempty,gt=0"`
 	WasteQty        *float64   `json:"waste_qty,omitempty" validate:"min=0"`
-	Unit             *string   `json:"unit,omitempty" validate:"omitempty,max=50"`
-	TransactionDate  *time.Time `json:"transaction_date,omitempty"`
+	Unit            *string    `json:"unit,omitempty" validate:"omitempty,max=50"`
+	TransactionDate *time.Time `json:"transaction_date,omitempty"`
 }
 
 type OrderIngredientTransactionResponse struct {
@@ -98,11 +98,11 @@ type ListOrderIngredientTransactionsRequest struct {
 }
 
 type OrderIngredientTransactionSummary struct {
-	IngredientID     uuid.UUID `json:"ingredient_id"`
-	IngredientName   string    `json:"ingredient_name"`
-	TotalGrossQty    float64   `json:"total_gross_qty"`
-	TotalNetQty      float64   `json:"total_net_qty"`
-	TotalWasteQty    float64   `json:"total_waste_qty"`
-	WastePercentage  float64   `json:"waste_percentage"`
-	Unit             string    `json:"unit"`
+	IngredientID    uuid.UUID `json:"ingredient_id"`
+	IngredientName  string    `json:"ingredient_name"`
+	TotalGrossQty   float64   `json:"total_gross_qty"`
+	TotalNetQty     float64   `json:"total_net_qty"`
+	TotalWasteQty   float64   `json:"total_waste_qty"`
+	WastePercentage float64   `json:"waste_percentage"`
+	Unit            string    `json:"unit"`
 }

internal/models/product.go

@@ -40,6 +40,7 @@ type ProductVariant struct {
 
 type CreateProductRequest struct {
 	OrganizationID uuid.UUID              `validate:"required"`
+	OutletID       uuid.UUID              `validate:"omitempty"` // If set, upsert product_outlet_prices on create
 	CategoryID     uuid.UUID              `validate:"required"`
 	SKU            *string                `validate:"omitempty,max=100"`
 	Name           string                 `validate:"required,min=1,max=255"`
@@ -49,6 +50,7 @@ type CreateProductRequest struct {
 	BusinessType   constants.BusinessType `validate:"required"`
 	ImageURL       *string                `validate:"omitempty,max=500"`
 	PrinterType    *string                `validate:"omitempty,max=50"`
+	PrintToChecker *bool                  `validate:"omitempty"`
 	UnitID         *uuid.UUID             `validate:"omitempty"`
 	HasIngredients bool                   `validate:"omitempty"`
 	Metadata       map[string]interface{}
@@ -60,6 +62,7 @@ type CreateProductRequest struct {
 }
 
 type UpdateProductRequest struct {
+	OutletID       uuid.UUID  `validate:"omitempty"` // If set, upsert product_outlet_prices on update
 	CategoryID     *uuid.UUID `validate:"omitempty"`
 	SKU            *string    `validate:"omitempty,max=100"`
 	Name           *string    `validate:"omitempty,min=1,max=255"`
@@ -68,6 +71,7 @@ type UpdateProductRequest struct {
 	Cost           *float64   `validate:"omitempty,min=0"`
 	ImageURL       *string    `validate:"omitempty,max=500"`
 	PrinterType    *string    `validate:"omitempty,max=50"`
+	PrintToChecker *bool      `validate:"omitempty"`
 	UnitID         *uuid.UUID `validate:"omitempty"`
 	HasIngredients *bool      `validate:"omitempty"`
 	Metadata       map[string]interface{}
@@ -106,6 +110,7 @@ type ProductResponse struct {
 	BusinessType   constants.BusinessType
 	ImageURL       *string
 	PrinterType    string
+	PrintToChecker bool
 	UnitID         *uuid.UUID
 	HasIngredients bool
 	Metadata       map[string]interface{}
@@ -116,9 +121,10 @@ type ProductResponse struct {
 }
 
 type OutletPrice struct {
-	OutletID   uuid.UUID
-	OutletName string
-	Price      float64
+	OutletID       uuid.UUID
+	OutletName     string
+	Price          float64
+	PrintToChecker bool
 }
 
 type ProductVariantResponse struct {

internal/models/product_ingredient.go

@@ -7,15 +7,15 @@ import (
 )
 
 type ProductIngredient struct {
-	ID               uuid.UUID  `json:"id"`
-	OrganizationID   uuid.UUID  `json:"organization_id"`
-	OutletID         *uuid.UUID `json:"outlet_id"`
-	ProductID        uuid.UUID  `json:"product_id"`
-	IngredientID     uuid.UUID  `json:"ingredient_id"`
-	Quantity         float64    `json:"quantity"`
-	WastePercentage  float64    `json:"waste_percentage"`
-	CreatedAt        time.Time  `json:"created_at"`
-	UpdatedAt        time.Time  `json:"updated_at"`
+	ID              uuid.UUID  `json:"id"`
+	OrganizationID  uuid.UUID  `json:"organization_id"`
+	OutletID        *uuid.UUID `json:"outlet_id"`
+	ProductID       uuid.UUID  `json:"product_id"`
+	IngredientID    uuid.UUID  `json:"ingredient_id"`
+	Quantity        float64    `json:"quantity"`
+	WastePercentage float64    `json:"waste_percentage"`
+	CreatedAt       time.Time  `json:"created_at"`
+	UpdatedAt       time.Time  `json:"updated_at"`
 
 	// Relations
 	Product    *Product    `json:"product,omitempty"`
@@ -37,15 +37,15 @@ type UpdateProductIngredientRequest struct {
 }
 
 type ProductIngredientResponse struct {
-	ID               uuid.UUID  `json:"id"`
-	OrganizationID   uuid.UUID  `json:"organization_id"`
-	OutletID         *uuid.UUID `json:"outlet_id"`
-	ProductID        uuid.UUID  `json:"product_id"`
-	IngredientID     uuid.UUID  `json:"ingredient_id"`
-	Quantity         float64    `json:"quantity"`
-	WastePercentage  float64    `json:"waste_percentage"`
-	CreatedAt        time.Time  `json:"created_at"`
-	UpdatedAt        time.Time  `json:"updated_at"`
+	ID              uuid.UUID  `json:"id"`
+	OrganizationID  uuid.UUID  `json:"organization_id"`
+	OutletID        *uuid.UUID `json:"outlet_id"`
+	ProductID       uuid.UUID  `json:"product_id"`
+	IngredientID    uuid.UUID  `json:"ingredient_id"`
+	Quantity        float64    `json:"quantity"`
+	WastePercentage float64    `json:"waste_percentage"`
+	CreatedAt       time.Time  `json:"created_at"`
+	UpdatedAt       time.Time  `json:"updated_at"`
 
 	// Relations
 	Product    *Product    `json:"product,omitempty"`

internal/models/product_outlet_price.go

@@ -7,22 +7,25 @@ import (
 )
 
 type ProductOutletPrice struct {
-	ID        uuid.UUID
-	ProductID uuid.UUID
-	OutletID  uuid.UUID
-	Price     float64
-	CreatedAt time.Time
-	UpdatedAt time.Time
+	ID             uuid.UUID
+	ProductID      uuid.UUID
+	OutletID       uuid.UUID
+	Price          float64
+	PrintToChecker bool
+	CreatedAt      time.Time
+	UpdatedAt      time.Time
 }
 
 type CreateProductOutletPriceRequest struct {
-	ProductID uuid.UUID `validate:"required"`
-	OutletID  uuid.UUID `validate:"required"`
-	Price     float64   `validate:"required,min=0"`
+	ProductID      uuid.UUID `validate:"required"`
+	OutletID       uuid.UUID `validate:"required"`
+	Price          float64   `validate:"required,min=0"`
+	PrintToChecker bool
 }
 
 type UpdateProductOutletPriceRequest struct {
-	Price *float64 `validate:"required,min=0"`
+	Price          *float64 `validate:"required,min=0"`
+	PrintToChecker *bool
 }
 
 type ProductOutletPriceResponse struct {

internal/models/product_recipe.go

@@ -56,4 +56,4 @@ type ProductRecipeResponse struct {
 	Product        *Product        `json:"product,omitempty"`
 	ProductVariant *ProductVariant `json:"product_variant,omitempty"`
 	Ingredient     *Ingredient     `json:"ingredient,omitempty"`
-}
+}

internal/models/purchase_category.go

@@ -0,0 +1,51 @@
+package models
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+)
+
+type PurchaseCategoryResponse struct {
+	ID             uuid.UUID
+	OrganizationID uuid.UUID
+	PresetID       *uuid.UUID
+	ParentID       *uuid.UUID
+	Code           string
+	Name           string
+	Type           string
+	SortOrder      int
+	IsSystem       bool
+	IsActive       bool
+	CreatedAt      time.Time
+	UpdatedAt      time.Time
+}
+
+type CreatePurchaseCategoryRequest struct {
+	OrganizationID uuid.UUID
+	ParentID       *uuid.UUID
+	Code           *string
+	Name           string
+	Type           string
+	SortOrder      int
+	IsActive       bool
+}
+
+type UpdatePurchaseCategoryRequest struct {
+	ParentID  *uuid.UUID
+	Code      *string
+	Name      *string
+	Type      *string
+	SortOrder *int
+	IsActive  *bool
+}
+
+type ListPurchaseCategoriesRequest struct {
+	OrganizationID uuid.UUID
+	ParentID       *uuid.UUID
+	Type           string
+	Search         string
+	IsActive       *bool
+	Page           int
+	Limit          int
+}

internal/models/purchase_order.go

@@ -7,30 +7,31 @@ import (
 )
 
 type PurchaseOrder struct {
-	ID              uuid.UUID `json:"id"`
-	OrganizationID  uuid.UUID `json:"organization_id"`
-	VendorID        uuid.UUID `json:"vendor_id"`
-	PONumber        string    `json:"po_number"`
-	TransactionDate time.Time `json:"transaction_date"`
-	DueDate         time.Time `json:"due_date"`
-	Reference       *string   `json:"reference"`
-	Status          string    `json:"status"`
-	Message         *string   `json:"message"`
-	TotalAmount     float64   `json:"total_amount"`
-	CreatedAt       time.Time `json:"created_at"`
-	UpdatedAt       time.Time `json:"updated_at"`
+	ID              uuid.UUID  `json:"id"`
+	OrganizationID  uuid.UUID  `json:"organization_id"`
+	VendorID        uuid.UUID  `json:"vendor_id"`
+	PONumber        string     `json:"po_number"`
+	TransactionDate time.Time  `json:"transaction_date"`
+	DueDate         *time.Time `json:"due_date"`
+	Reference       *string    `json:"reference"`
+	Status          string     `json:"status"`
+	Message         *string    `json:"message"`
+	TotalAmount     float64    `json:"total_amount"`
+	CreatedAt       time.Time  `json:"created_at"`
+	UpdatedAt       time.Time  `json:"updated_at"`
 }
 
 type PurchaseOrderItem struct {
-	ID              uuid.UUID `json:"id"`
-	PurchaseOrderID uuid.UUID `json:"purchase_order_id"`
-	IngredientID    uuid.UUID `json:"ingredient_id"`
-	Description     *string   `json:"description"`
-	Quantity        float64   `json:"quantity"`
-	UnitID          uuid.UUID `json:"unit_id"`
-	Amount          float64   `json:"amount"`
-	CreatedAt       time.Time `json:"created_at"`
-	UpdatedAt       time.Time `json:"updated_at"`
+	ID                 uuid.UUID  `json:"id"`
+	PurchaseOrderID    uuid.UUID  `json:"purchase_order_id"`
+	IngredientID       *uuid.UUID `json:"ingredient_id"`
+	PurchaseCategoryID uuid.UUID  `json:"purchase_category_id"`
+	Description        *string    `json:"description"`
+	Quantity           *float64   `json:"quantity"`
+	UnitID             *uuid.UUID `json:"unit_id"`
+	Amount             float64    `json:"amount"`
+	CreatedAt          time.Time  `json:"created_at"`
+	UpdatedAt          time.Time  `json:"updated_at"`
 }
 
 type PurchaseOrderAttachment struct {
@@ -46,7 +47,7 @@ type PurchaseOrderResponse struct {
 	VendorID        uuid.UUID                         `json:"vendor_id"`
 	PONumber        string                            `json:"po_number"`
 	TransactionDate time.Time                         `json:"transaction_date"`
-	DueDate         time.Time                         `json:"due_date"`
+	DueDate         *time.Time                        `json:"due_date"`
 	Reference       *string                           `json:"reference"`
 	Status          string                            `json:"status"`
 	Message         *string                           `json:"message"`
@@ -59,17 +60,19 @@ type PurchaseOrderResponse struct {
 }
 
 type PurchaseOrderItemResponse struct {
-	ID              uuid.UUID           `json:"id"`
-	PurchaseOrderID uuid.UUID           `json:"purchase_order_id"`
-	IngredientID    uuid.UUID           `json:"ingredient_id"`
-	Description     *string             `json:"description"`
-	Quantity        float64             `json:"quantity"`
-	UnitID          uuid.UUID           `json:"unit_id"`
-	Amount          float64             `json:"amount"`
-	CreatedAt       time.Time           `json:"created_at"`
-	UpdatedAt       time.Time           `json:"updated_at"`
-	Ingredient      *IngredientResponse `json:"ingredient,omitempty"`
-	Unit            *UnitResponse       `json:"unit,omitempty"`
+	ID                 uuid.UUID                 `json:"id"`
+	PurchaseOrderID    uuid.UUID                 `json:"purchase_order_id"`
+	IngredientID       *uuid.UUID                `json:"ingredient_id"`
+	PurchaseCategoryID uuid.UUID                 `json:"purchase_category_id"`
+	Description        *string                   `json:"description"`
+	Quantity           *float64                  `json:"quantity"`
+	UnitID             *uuid.UUID                `json:"unit_id"`
+	Amount             float64                   `json:"amount"`
+	CreatedAt          time.Time                 `json:"created_at"`
+	UpdatedAt          time.Time                 `json:"updated_at"`
+	Ingredient         *IngredientResponse       `json:"ingredient,omitempty"`
+	PurchaseCategory   *PurchaseCategoryResponse `json:"purchase_category,omitempty"`
+	Unit               *UnitResponse             `json:"unit,omitempty"`
 }
 
 type PurchaseOrderAttachmentResponse struct {
@@ -84,7 +87,7 @@ type CreatePurchaseOrderRequest struct {
 	VendorID          uuid.UUID                        `json:"vendor_id"`
 	PONumber          string                           `json:"po_number"`
 	TransactionDate   time.Time                        `json:"transaction_date"`
-	DueDate           time.Time                        `json:"due_date"`
+	DueDate           *time.Time                       `json:"due_date,omitempty"`
 	Reference         *string                          `json:"reference,omitempty"`
 	Status            *string                          `json:"status,omitempty"`
 	Message           *string                          `json:"message,omitempty"`
@@ -93,11 +96,12 @@ type CreatePurchaseOrderRequest struct {
 }
 
 type CreatePurchaseOrderItemRequest struct {
-	IngredientID uuid.UUID `json:"ingredient_id"`
-	Description  *string   `json:"description,omitempty"`
-	Quantity     float64   `json:"quantity"`
-	UnitID       uuid.UUID `json:"unit_id"`
-	Amount       float64   `json:"amount"`
+	IngredientID       *uuid.UUID `json:"ingredient_id,omitempty"`
+	PurchaseCategoryID uuid.UUID  `json:"purchase_category_id"`
+	Description        *string    `json:"description,omitempty"`
+	Quantity           *float64   `json:"quantity,omitempty"`
+	UnitID             *uuid.UUID `json:"unit_id,omitempty"`
+	Amount             float64    `json:"amount"`
 }
 
 type UpdatePurchaseOrderRequest struct {
@@ -113,12 +117,13 @@ type UpdatePurchaseOrderRequest struct {
 }
 
 type UpdatePurchaseOrderItemRequest struct {
-	ID           *uuid.UUID `json:"id,omitempty"` // For existing items
-	IngredientID *uuid.UUID `json:"ingredient_id,omitempty"`
-	Description  *string    `json:"description,omitempty"`
-	Quantity     *float64   `json:"quantity,omitempty"`
-	UnitID       *uuid.UUID `json:"unit_id,omitempty"`
-	Amount       *float64   `json:"amount,omitempty"`
+	ID                 *uuid.UUID `json:"id,omitempty"` // For existing items
+	IngredientID       *uuid.UUID `json:"ingredient_id,omitempty"`
+	PurchaseCategoryID *uuid.UUID `json:"purchase_category_id,omitempty"`
+	Description        *string    `json:"description,omitempty"`
+	Quantity           *float64   `json:"quantity,omitempty"`
+	UnitID             *uuid.UUID `json:"unit_id,omitempty"`
+	Amount             *float64   `json:"amount,omitempty"`
 }
 
 type ListPurchaseOrdersRequest struct {

internal/processor/analytics_processor.go

@@ -3,8 +3,10 @@ package processor
 import (
 	"context"
 	"fmt"
+	"strings"
 	"time"
 
+	"apskel-pos-be/internal/entities"
 	"apskel-pos-be/internal/models"
 	"apskel-pos-be/internal/repository"
 )
@@ -12,19 +14,24 @@ import (
 type AnalyticsProcessor interface {
 	GetPaymentMethodAnalytics(ctx context.Context, req *models.PaymentMethodAnalyticsRequest) (*models.PaymentMethodAnalyticsResponse, error)
 	GetSalesAnalytics(ctx context.Context, req *models.SalesAnalyticsRequest) (*models.SalesAnalyticsResponse, error)
+	GetPurchasingAnalytics(ctx context.Context, req *models.PurchasingAnalyticsRequest) (*models.PurchasingAnalyticsResponse, error)
 	GetProductAnalytics(ctx context.Context, req *models.ProductAnalyticsRequest) (*models.ProductAnalyticsResponse, error)
 	GetProductAnalyticsPerCategory(ctx context.Context, req *models.ProductAnalyticsPerCategoryRequest) (*models.ProductAnalyticsPerCategoryResponse, error)
 	GetDashboardAnalytics(ctx context.Context, req *models.DashboardAnalyticsRequest) (*models.DashboardAnalyticsResponse, error)
 	GetProfitLossAnalytics(ctx context.Context, req *models.ProfitLossAnalyticsRequest) (*models.ProfitLossAnalyticsResponse, error)
+	GetExclusiveSummaryPeriod(ctx context.Context, req *models.ExclusiveSummaryPeriodRequest) (*models.ExclusiveSummaryPeriodResponse, error)
+	GetExclusiveSummaryMonthly(ctx context.Context, req *models.ExclusiveSummaryMonthlyRequest) (*models.ExclusiveSummaryMonthlyResponse, error)
 }
 
 type AnalyticsProcessorImpl struct {
 	analyticsRepo repository.AnalyticsRepository
+	expenseRepo   ExpenseRepository
 }
 
-func NewAnalyticsProcessorImpl(analyticsRepo repository.AnalyticsRepository) *AnalyticsProcessorImpl {
+func NewAnalyticsProcessorImpl(analyticsRepo repository.AnalyticsRepository, expenseRepo ExpenseRepository) *AnalyticsProcessorImpl {
 	return &AnalyticsProcessorImpl{
 		analyticsRepo: analyticsRepo,
+		expenseRepo:   expenseRepo,
 	}
 }
 
@@ -164,6 +171,85 @@ func (p *AnalyticsProcessorImpl) GetSalesAnalytics(ctx context.Context, req *mod
 	}, nil
 }
 
+func (p *AnalyticsProcessorImpl) GetPurchasingAnalytics(ctx context.Context, req *models.PurchasingAnalyticsRequest) (*models.PurchasingAnalyticsResponse, error) {
+	if req.DateFrom.After(req.DateTo) {
+		return nil, fmt.Errorf("date_from cannot be after date_to")
+	}
+
+	if req.GroupBy == "" {
+		req.GroupBy = "day"
+	}
+
+	result, err := p.analyticsRepo.GetPurchasingAnalytics(ctx, req.OrganizationID, req.OutletID, req.DateFrom, req.DateTo, req.GroupBy)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get purchasing analytics: %w", err)
+	}
+
+	data := make([]models.PurchasingAnalyticsData, len(result.Data))
+	for i, item := range result.Data {
+		data[i] = models.PurchasingAnalyticsData{
+			Date:                      item.Date,
+			Purchases:                 item.Purchases,
+			RawMaterialPurchases:      item.RawMaterialPurchases,
+			ExpensePurchases:          item.ExpensePurchases,
+			PurchaseOrders:            item.PurchaseOrders,
+			RawMaterialPurchaseOrders: item.RawMaterialPurchaseOrders,
+			ExpenseCount:              item.ExpenseCount,
+			Quantity:                  item.Quantity,
+			Ingredients:               item.Ingredients,
+			Vendors:                   item.Vendors,
+		}
+	}
+
+	ingredientData := make([]models.PurchasingIngredientData, len(result.IngredientData))
+	for i, item := range result.IngredientData {
+		ingredientData[i] = models.PurchasingIngredientData{
+			IngredientID:       item.IngredientID,
+			IngredientName:     item.IngredientName,
+			Quantity:           item.Quantity,
+			TotalCost:          item.TotalCost,
+			AverageUnitCost:    item.AverageUnitCost,
+			PurchaseOrderCount: item.PurchaseOrderCount,
+		}
+	}
+
+	vendorData := make([]models.PurchasingVendorData, len(result.VendorData))
+	for i, item := range result.VendorData {
+		vendorData[i] = models.PurchasingVendorData{
+			VendorID:           item.VendorID,
+			VendorName:         item.VendorName,
+			TotalCost:          item.TotalCost,
+			PurchaseOrderCount: item.PurchaseOrderCount,
+			IngredientCount:    item.IngredientCount,
+			Quantity:           item.Quantity,
+		}
+	}
+
+	return &models.PurchasingAnalyticsResponse{
+		OrganizationID: req.OrganizationID,
+		OutletID:       req.OutletID,
+		OutletName:     result.OutletName,
+		DateFrom:       req.DateFrom,
+		DateTo:         req.DateTo,
+		GroupBy:        req.GroupBy,
+		Summary: models.PurchasingSummary{
+			TotalPurchases:            result.Summary.TotalPurchases,
+			RawMaterialPurchases:      result.Summary.RawMaterialPurchases,
+			ExpensePurchases:          result.Summary.ExpensePurchases,
+			TotalPurchaseOrders:       result.Summary.TotalPurchaseOrders,
+			RawMaterialPurchaseOrders: result.Summary.RawMaterialPurchaseOrders,
+			ExpenseCount:              result.Summary.ExpenseCount,
+			TotalQuantity:             result.Summary.TotalQuantity,
+			AveragePurchaseOrderValue: result.Summary.AveragePurchaseOrderValue,
+			TotalIngredients:          result.Summary.TotalIngredients,
+			TotalVendors:              result.Summary.TotalVendors,
+		},
+		Data:           data,
+		IngredientData: ingredientData,
+		VendorData:     vendorData,
+	}, nil
+}
+
 func (p *AnalyticsProcessorImpl) GetProductAnalytics(ctx context.Context, req *models.ProductAnalyticsRequest) (*models.ProductAnalyticsResponse, error) {
 	// Validate date range
 	if req.DateFrom.After(req.DateTo) {
@@ -188,6 +274,7 @@ func (p *AnalyticsProcessorImpl) GetProductAnalytics(ctx context.Context, req *m
 			ProductID:               data.ProductID,
 			ProductName:             data.ProductName,
 			ProductSku:              data.ProductSku,
+			ProductPrice:            data.ProductPrice,
 			CategoryID:              data.CategoryID,
 			CategoryName:            data.CategoryName,
 			CategoryOrder:           data.CategoryOrder,
@@ -322,17 +409,27 @@ func (p *AnalyticsProcessorImpl) GetDashboardAnalytics(ctx context.Context, req
 }
 
 func (p *AnalyticsProcessorImpl) GetProfitLossAnalytics(ctx context.Context, req *models.ProfitLossAnalyticsRequest) (*models.ProfitLossAnalyticsResponse, error) {
+	if req.DateFrom.IsZero() {
+		return nil, fmt.Errorf("date_from is required")
+	}
+
+	if req.DateTo.IsZero() {
+		return nil, fmt.Errorf("date_to is required")
+	}
+
 	if req.DateFrom.After(req.DateTo) {
 		return nil, fmt.Errorf("date_from cannot be after date_to")
 	}
 
-	// Get analytics data from repository
+	if req.GroupBy == "" {
+		req.GroupBy = "day"
+	}
+
 	result, err := p.analyticsRepo.GetProfitLossAnalytics(ctx, req.OrganizationID, req.OutletID, req.DateFrom, req.DateTo, req.GroupBy)
 	if err != nil {
 		return nil, fmt.Errorf("failed to get profit/loss analytics: %w", err)
 	}
 
-	// Transform entities to models
 	data := make([]models.ProfitLossData, len(result.Data))
 	for i, item := range result.Data {
 		data[i] = models.ProfitLossData{
@@ -367,6 +464,145 @@ func (p *AnalyticsProcessorImpl) GetProfitLossAnalytics(ctx context.Context, req
 		}
 	}
 
+	type categoryAmount struct {
+		Name     string
+		TodayAmt float64
+		MtdAmt   float64
+	}
+
+	categoryMap := make(map[string]*categoryAmount)
+	var categoryOrder []string
+
+	for _, cat := range result.TodayExpenseByCategory {
+		name := cat.CategoryName
+		if _, exists := categoryMap[name]; !exists {
+			categoryMap[name] = &categoryAmount{Name: name}
+			categoryOrder = append(categoryOrder, name)
+		}
+		categoryMap[name].TodayAmt = cat.Amount
+	}
+
+	for _, cat := range result.MtdExpenseByCategory {
+		name := cat.CategoryName
+		if _, exists := categoryMap[name]; !exists {
+			categoryMap[name] = &categoryAmount{Name: name}
+			categoryOrder = append(categoryOrder, name)
+		}
+		categoryMap[name].MtdAmt = cat.Amount
+	}
+
+	var todayTotalOps float64
+	var mtdTotalOps float64
+	var todayGaji float64
+	var mtdGaji float64
+	for _, cat := range categoryMap {
+		if isSalaryExpenseCategory(cat.Name) {
+			todayGaji += cat.TodayAmt
+			mtdGaji += cat.MtdAmt
+			continue
+		}
+		todayTotalOps += cat.TodayAmt
+		mtdTotalOps += cat.MtdAmt
+	}
+
+	todayGrossProfit := result.TodayRevenue - result.TodayCost
+	mtdGrossProfit := result.MtdRevenue - result.MtdCost
+
+	todayProfitBeforeGaji := todayGrossProfit - todayTotalOps
+	mtdProfitBeforeGaji := mtdGrossProfit - mtdTotalOps
+
+	todayNetProfit := todayProfitBeforeGaji - todayGaji
+	mtdNetProfit := mtdProfitBeforeGaji - mtdGaji
+
+	todayPct := func(nominal float64) float64 {
+		if result.TodayRevenue == 0 {
+			return 0
+		}
+		return (nominal / result.TodayRevenue) * 100
+	}
+	mtdPct := func(nominal float64) float64 {
+		if result.MtdRevenue == 0 {
+			return 0
+		}
+		return (nominal / result.MtdRevenue) * 100
+	}
+
+	opsSubItems := make([]models.ProfitLossSummaryRow, 0, len(categoryOrder)+1)
+	opsCategoryCount := 0
+	for _, name := range categoryOrder {
+		cat := categoryMap[name]
+		if isSalaryExpenseCategory(cat.Name) {
+			continue
+		}
+		opsCategoryCount++
+		opsSubItems = append(opsSubItems, models.ProfitLossSummaryRow{
+			ID:           fmt.Sprintf("by_%s", slugify(name)),
+			Label:        fmt.Sprintf("%d. %s", opsCategoryCount, cat.Name),
+			TodayNominal: cat.TodayAmt,
+			TodayPct:     todayPct(cat.TodayAmt),
+			MtdNominal:   cat.MtdAmt,
+			MtdPct:       mtdPct(cat.MtdAmt),
+		})
+	}
+	opsSubItems = append(opsSubItems, models.ProfitLossSummaryRow{
+		ID:           "total_biaya_ops",
+		Label:        fmt.Sprintf("Total Biaya OPS (%d kategori)", opsCategoryCount),
+		IsBold:       true,
+		TodayNominal: todayTotalOps,
+		TodayPct:     todayPct(todayTotalOps),
+		MtdNominal:   mtdTotalOps,
+		MtdPct:       mtdPct(mtdTotalOps),
+	})
+
+	mainSummary := []models.ProfitLossSummaryRow{
+		{
+			ID: "total_omset", Label: "TOTAL OMSET",
+			TodayNominal: result.TodayRevenue, TodayPct: todayPct(result.TodayRevenue),
+			MtdNominal: result.MtdRevenue, MtdPct: mtdPct(result.MtdRevenue),
+		},
+		{
+			ID: "hpp", Label: "HPP",
+			TodayNominal: result.TodayCost, TodayPct: todayPct(result.TodayCost),
+			MtdNominal: result.MtdCost, MtdPct: mtdPct(result.MtdCost),
+		},
+		{
+			ID: "laba_kotor", Label: "Laba Kotor (1-2)",
+			TodayNominal: todayGrossProfit, TodayPct: todayPct(todayGrossProfit),
+			MtdNominal: mtdGrossProfit, MtdPct: mtdPct(mtdGrossProfit),
+		},
+		{
+			ID: "biaya_ops", Label: "BIAYA OPS",
+			TodayNominal: todayTotalOps, TodayPct: todayPct(todayTotalOps),
+			MtdNominal: mtdTotalOps, MtdPct: mtdPct(mtdTotalOps),
+			SubItems: opsSubItems,
+		},
+		{
+			ID: "laba_rugi_sblm_gaji", Label: "Laba/Rugi sblm Gaji (3-4)",
+			TodayNominal: todayProfitBeforeGaji, TodayPct: todayPct(todayProfitBeforeGaji),
+			MtdNominal: mtdProfitBeforeGaji, MtdPct: mtdPct(mtdProfitBeforeGaji),
+		},
+		{
+			ID: "biaya_gaji", Label: "BIAYA GAJI",
+			TodayNominal: todayGaji, TodayPct: todayPct(todayGaji),
+			MtdNominal: mtdGaji, MtdPct: mtdPct(mtdGaji),
+		},
+		{
+			ID: "laba_rugi", Label: "Laba/Rugi (5-6)", IsBold: true,
+			TodayNominal: todayNetProfit, TodayPct: todayPct(todayNetProfit),
+			MtdNominal: mtdNetProfit, MtdPct: mtdPct(mtdNetProfit),
+		},
+	}
+
+	opsItems := make([]models.OperationalExpenseItem, len(result.OperationalExpenseItems))
+	var opsTotal float64
+	for i, item := range result.OperationalExpenseItems {
+		opsItems[i] = models.OperationalExpenseItem{
+			Item:    item.Item,
+			Nominal: item.Amount,
+		}
+		opsTotal += item.Amount
+	}
+
 	return &models.ProfitLossAnalyticsResponse{
 		OrganizationID: req.OrganizationID,
 		OutletID:       req.OutletID,
@@ -386,7 +622,298 @@ func (p *AnalyticsProcessorImpl) GetProfitLossAnalytics(ctx context.Context, req
 			AverageProfit:      result.Summary.AverageProfit,
 			ProfitabilityRatio: result.Summary.ProfitabilityRatio,
 		},
-		Data:        data,
-		ProductData: productData,
+		Data:                     data,
+		ProductData:              productData,
+		MainSummary:              mainSummary,
+		OperationalExpenses:      opsItems,
+		OperationalExpensesTotal: opsTotal,
 	}, nil
 }
+
+func isSalaryExpenseCategory(name string) bool {
+	name = strings.ToLower(name)
+	return strings.Contains(name, "gaji") || strings.Contains(name, "salary")
+}
+
+func slugify(s string) string {
+	result := make([]byte, 0, len(s))
+	for i := 0; i < len(s); i++ {
+		c := s[i]
+		switch {
+		case c >= 'a' && c <= 'z':
+			result = append(result, c)
+		case c >= 'A' && c <= 'Z':
+			result = append(result, c+32)
+		case c >= '0' && c <= '9':
+			result = append(result, c)
+		default:
+			if len(result) == 0 || result[len(result)-1] != '_' {
+				result = append(result, '_')
+			}
+		}
+	}
+	return string(result)
+}
+
+func (p *AnalyticsProcessorImpl) GetExclusiveSummaryPeriod(ctx context.Context, req *models.ExclusiveSummaryPeriodRequest) (*models.ExclusiveSummaryPeriodResponse, error) {
+	if req.DateFrom.After(req.DateTo) {
+		return nil, fmt.Errorf("date_from cannot be after date_to")
+	}
+
+	return p.buildExclusiveSummaryPeriod(ctx, req)
+}
+
+func (p *AnalyticsProcessorImpl) GetExclusiveSummaryMonthly(ctx context.Context, req *models.ExclusiveSummaryMonthlyRequest) (*models.ExclusiveSummaryMonthlyResponse, error) {
+	monthStart := time.Date(req.Month.Year(), req.Month.Month(), 1, 0, 0, 0, 0, req.Month.Location())
+	monthEnd := monthStart.AddDate(0, 1, 0).Add(-time.Nanosecond)
+
+	fullPeriod, err := p.buildExclusiveSummaryPeriod(ctx, &models.ExclusiveSummaryPeriodRequest{
+		OrganizationID: req.OrganizationID,
+		OutletID:       req.OutletID,
+		DateFrom:       monthStart,
+		DateTo:         monthEnd,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	periods := make([]models.ExclusiveSummaryMonthlyPeriod, 0)
+	for _, bucket := range buildExclusiveSummaryMonthlyBuckets(monthStart) {
+		period, err := p.buildExclusiveSummaryPeriod(ctx, &models.ExclusiveSummaryPeriodRequest{
+			OrganizationID: req.OrganizationID,
+			OutletID:       req.OutletID,
+			DateFrom:       bucket.DateFrom,
+			DateTo:         bucket.DateTo,
+		})
+		if err != nil {
+			return nil, err
+		}
+
+		periods = append(periods, models.ExclusiveSummaryMonthlyPeriod{
+			Label:       bucket.Label,
+			DateFrom:    bucket.DateFrom,
+			DateTo:      bucket.DateTo,
+			Sales:       period.Summary.Sales,
+			HPP:         period.Summary.HPP,
+			GrossProfit: period.Summary.GrossProfit,
+			GrossMargin: percentage(period.Summary.GrossProfit, period.Summary.Sales),
+		})
+	}
+
+	bankBalances, err := p.analyticsRepo.GetExclusiveSummaryBankBalances(ctx, req.OrganizationID, req.OutletID)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get exclusive summary bank balances: %w", err)
+	}
+
+	bankBalance := make([]models.ExclusiveSummaryBankBalance, len(bankBalances))
+	for i, item := range bankBalances {
+		bankBalance[i] = models.ExclusiveSummaryBankBalance{
+			Bank:             item.Bank,
+			OpeningBalance:   item.OpeningBalance,
+			IncomingMutation: item.IncomingMutation,
+			OutgoingMutation: item.OutgoingMutation,
+			ClosingBalance:   item.ClosingBalance,
+			Notes:            item.Notes,
+		}
+	}
+
+	return &models.ExclusiveSummaryMonthlyResponse{
+		OrganizationID: req.OrganizationID,
+		OutletID:       req.OutletID,
+		Month:          monthStart.Format("2006-01"),
+		Summary: models.ExclusiveSummaryMonthlySummary{
+			TotalSales:               fullPeriod.Summary.Sales,
+			HPP:                      fullPeriod.Summary.HPP,
+			GrossProfit:              fullPeriod.Summary.GrossProfit,
+			OperationalExpensesTotal: fullPeriod.Summary.OperationalExpensesTotal,
+			TotalCost:                fullPeriod.Summary.TotalCost,
+			NetProfit:                fullPeriod.Summary.NetProfit,
+			NetProfitMargin:          percentage(fullPeriod.Summary.NetProfit, fullPeriod.Summary.Sales),
+		},
+		Periods:     periods,
+		BankBalance: bankBalance,
+	}, nil
+}
+
+func (p *AnalyticsProcessorImpl) buildExclusiveSummaryPeriod(ctx context.Context, req *models.ExclusiveSummaryPeriodRequest) (*models.ExclusiveSummaryPeriodResponse, error) {
+	result, err := p.analyticsRepo.GetExclusiveSummaryAnalytics(ctx, req.OrganizationID, req.OutletID, req.DateFrom, req.DateTo)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get exclusive summary analytics: %w", err)
+	}
+
+	hppBreakdown, hppTotal := exclusiveSummaryCategoryBreakdown(result.HPPBreakdown)
+	operationalBreakdown, operationalTotal := exclusiveSummaryCategoryBreakdown(result.OperationalExpenseBreakdown)
+	salaryDW, salaryStaff, salaryOther := exclusiveSummarySalaryBreakdown(result.DailyTransactions)
+	salaryTotal := salaryDW + salaryStaff + salaryOther
+	otherOperationalExpenses := operationalTotal - salaryTotal
+	if otherOperationalExpenses < 0 {
+		otherOperationalExpenses = 0
+	}
+
+	grossProfit := result.SalesTotal - hppTotal
+	totalCost := hppTotal + operationalTotal
+	netProfit := result.SalesTotal - totalCost
+	excludedSalaryStaff := 0.0
+	if req.ExcludeGajiStaffFromReimburse {
+		excludedSalaryStaff = salaryStaff
+	}
+
+	dailySummary := make([]models.ExclusiveSummaryDailySummary, len(result.DailySummary))
+	for i, item := range result.DailySummary {
+		dailySummary[i] = models.ExclusiveSummaryDailySummary{
+			Date:             item.Date,
+			TransactionCount: item.TransactionCount,
+			TotalCost:        item.TotalCost,
+		}
+	}
+
+	dailyTransactions := make([]models.ExclusiveSummaryDailyTransaction, len(result.DailyTransactions))
+	for i, item := range result.DailyTransactions {
+		dailyTransactions[i] = models.ExclusiveSummaryDailyTransaction{
+			Date:         item.Date,
+			CategoryCode: item.CategoryCode,
+			CategoryName: item.CategoryName,
+			Description:  item.Description,
+			Amount:       item.Amount,
+			Source:       item.Source,
+		}
+	}
+
+	return &models.ExclusiveSummaryPeriodResponse{
+		OrganizationID: req.OrganizationID,
+		OutletID:       req.OutletID,
+		Period: models.ExclusiveSummaryPeriodRange{
+			DateFrom: req.DateFrom,
+			DateTo:   req.DateTo,
+		},
+		Summary: models.ExclusiveSummaryPeriodSummary{
+			Sales:                    result.SalesTotal,
+			HPP:                      hppTotal,
+			GrossProfit:              grossProfit,
+			SalaryTotal:              salaryTotal,
+			SalaryDW:                 salaryDW,
+			SalaryStaff:              salaryStaff,
+			SalaryOther:              salaryOther,
+			OtherOperationalExpenses: otherOperationalExpenses,
+			OperationalExpensesTotal: operationalTotal,
+			TotalCost:                totalCost,
+			NetProfit:                netProfit,
+		},
+		Reimburse: models.ExclusiveSummaryReimburse{
+			TotalCost:           totalCost,
+			ExcludedSalaryStaff: excludedSalaryStaff,
+			TotalReimburse:      totalCost - excludedSalaryStaff,
+		},
+		HPPBreakdown:                hppBreakdown,
+		OperationalExpenseBreakdown: operationalBreakdown,
+		DailySummary:                dailySummary,
+		DailyTransactions:           dailyTransactions,
+	}, nil
+}
+
+func exclusiveSummaryCategoryBreakdown(items []entities.ExclusiveSummaryCategoryTotal) ([]models.ExclusiveSummaryCategoryBreakdown, float64) {
+	var total float64
+	for _, item := range items {
+		total += item.Amount
+	}
+
+	breakdown := make([]models.ExclusiveSummaryCategoryBreakdown, len(items))
+	for i, item := range items {
+		breakdown[i] = models.ExclusiveSummaryCategoryBreakdown{
+			CategoryCode: item.CategoryCode,
+			CategoryName: item.CategoryName,
+			Amount:       item.Amount,
+			Percentage:   percentage(item.Amount, total),
+		}
+	}
+
+	return breakdown, total
+}
+
+func exclusiveSummarySalaryBreakdown(transactions []entities.ExclusiveSummaryDailyTransaction) (float64, float64, float64) {
+	var salaryDW float64
+	var salaryStaff float64
+	var salaryOther float64
+
+	for _, transaction := range transactions {
+		if !isExclusiveSummarySalary(transaction.CategoryCode, transaction.CategoryName, transaction.Description) {
+			continue
+		}
+
+		classification := strings.ToLower(transaction.CategoryCode + " " + transaction.CategoryName + " " + transaction.Description)
+		switch {
+		case strings.Contains(classification, "staff") || strings.Contains(classification, "kary") || strings.Contains(classification, "karyawan"):
+			salaryStaff += transaction.Amount
+		case strings.Contains(classification, "dw"):
+			salaryDW += transaction.Amount
+		default:
+			salaryOther += transaction.Amount
+		}
+	}
+
+	return salaryDW, salaryStaff, salaryOther
+}
+
+func isExclusiveSummarySalary(parts ...string) bool {
+	text := strings.ToLower(strings.Join(parts, " "))
+	return strings.Contains(text, "gaji") || strings.Contains(text, "salary")
+}
+
+func percentage(numerator, denominator float64) float64 {
+	if denominator == 0 {
+		return 0
+	}
+	return (numerator / denominator) * 100
+}
+
+type exclusiveSummaryMonthlyBucket struct {
+	Label    string
+	DateFrom time.Time
+	DateTo   time.Time
+}
+
+func buildExclusiveSummaryMonthlyBuckets(monthStart time.Time) []exclusiveSummaryMonthlyBucket {
+	monthEnd := monthStart.AddDate(0, 1, 0).Add(-time.Nanosecond)
+	buckets := make([]exclusiveSummaryMonthlyBucket, 0, 6)
+	currentStart := monthStart
+
+	for !currentStart.After(monthEnd) {
+		currentEnd := currentStart
+		for currentEnd.Weekday() != time.Sunday && currentEnd.Day() < monthEnd.Day() {
+			currentEnd = currentEnd.AddDate(0, 0, 1)
+		}
+
+		bucketEnd := time.Date(currentEnd.Year(), currentEnd.Month(), currentEnd.Day(), 23, 59, 59, int(time.Second-time.Nanosecond), currentEnd.Location())
+		if bucketEnd.After(monthEnd) {
+			bucketEnd = monthEnd
+		}
+
+		buckets = append(buckets, exclusiveSummaryMonthlyBucket{
+			Label:    fmt.Sprintf("%d - %d %s", currentStart.Day(), bucketEnd.Day(), indonesianMonthName(currentStart.Month())),
+			DateFrom: currentStart,
+			DateTo:   bucketEnd,
+		})
+
+		currentStart = time.Date(bucketEnd.Year(), bucketEnd.Month(), bucketEnd.Day(), 0, 0, 0, 0, bucketEnd.Location()).AddDate(0, 0, 1)
+	}
+
+	return buckets
+}
+
+func indonesianMonthName(month time.Month) string {
+	names := map[time.Month]string{
+		time.January:   "Januari",
+		time.February:  "Februari",
+		time.March:     "Maret",
+		time.April:     "April",
+		time.May:       "Mei",
+		time.June:      "Juni",
+		time.July:      "Juli",
+		time.August:    "Agustus",
+		time.September: "September",
+		time.October:   "Oktober",
+		time.November:  "November",
+		time.December:  "Desember",
+	}
+	return names[month]
+}

internal/processor/analytics_processor_test.go

@@ -0,0 +1,395 @@
+package processor
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"apskel-pos-be/internal/entities"
+	"apskel-pos-be/internal/models"
+
+	"github.com/google/uuid"
+	"github.com/stretchr/testify/require"
+)
+
+type analyticsRepositoryStub struct {
+	purchasingResult        *entities.PurchasingAnalytics
+	profitLossResult        *entities.ProfitLossAnalytics
+	exclusiveSummaryResults []*entities.ExclusiveSummaryAnalytics
+	bankBalances            []entities.ExclusiveSummaryBankBalance
+	profitLossGroup         string
+	exclusiveSummaryCalls   int
+}
+
+func (analyticsRepositoryStub) GetPaymentMethodAnalytics(context.Context, uuid.UUID, *uuid.UUID, time.Time, time.Time) ([]*entities.PaymentMethodAnalytics, error) {
+	return nil, nil
+}
+
+func (analyticsRepositoryStub) GetSalesAnalytics(context.Context, uuid.UUID, *uuid.UUID, time.Time, time.Time, string) ([]*entities.SalesAnalytics, error) {
+	return nil, nil
+}
+
+func (s analyticsRepositoryStub) GetPurchasingAnalytics(context.Context, uuid.UUID, *uuid.UUID, time.Time, time.Time, string) (*entities.PurchasingAnalytics, error) {
+	return s.purchasingResult, nil
+}
+
+func (analyticsRepositoryStub) GetProductAnalytics(context.Context, uuid.UUID, *uuid.UUID, time.Time, time.Time, int) ([]*entities.ProductAnalytics, error) {
+	return nil, nil
+}
+
+func (analyticsRepositoryStub) GetProductAnalyticsPerCategory(context.Context, uuid.UUID, *uuid.UUID, time.Time, time.Time) ([]*entities.ProductAnalyticsPerCategory, error) {
+	return nil, nil
+}
+
+func (analyticsRepositoryStub) GetDashboardOverview(context.Context, uuid.UUID, *uuid.UUID, time.Time, time.Time) (*entities.DashboardOverview, error) {
+	return nil, nil
+}
+
+func (s analyticsRepositoryStub) GetProfitLossAnalytics(_ context.Context, _ uuid.UUID, _ *uuid.UUID, _, _ time.Time, groupBy string) (*entities.ProfitLossAnalytics, error) {
+	s.profitLossGroup = groupBy
+	return s.profitLossResult, nil
+}
+
+func (s *analyticsRepositoryStub) GetExclusiveSummaryAnalytics(context.Context, uuid.UUID, *uuid.UUID, time.Time, time.Time) (*entities.ExclusiveSummaryAnalytics, error) {
+	if s.exclusiveSummaryCalls < len(s.exclusiveSummaryResults) {
+		result := s.exclusiveSummaryResults[s.exclusiveSummaryCalls]
+		s.exclusiveSummaryCalls++
+		return result, nil
+	}
+	s.exclusiveSummaryCalls++
+	return &entities.ExclusiveSummaryAnalytics{}, nil
+}
+
+func (s *analyticsRepositoryStub) GetExclusiveSummaryBankBalances(context.Context, uuid.UUID, *uuid.UUID) ([]entities.ExclusiveSummaryBankBalance, error) {
+	return s.bankBalances, nil
+}
+
+type expenseRepositoryStub struct{}
+
+func (expenseRepositoryStub) Create(context.Context, *entities.Expense) error { return nil }
+func (expenseRepositoryStub) GetByID(context.Context, uuid.UUID) (*entities.Expense, error) {
+	return nil, nil
+}
+func (expenseRepositoryStub) GetByIDAndOrganizationID(context.Context, uuid.UUID, uuid.UUID) (*entities.Expense, error) {
+	return nil, nil
+}
+func (expenseRepositoryStub) Update(context.Context, *entities.Expense) error { return nil }
+func (expenseRepositoryStub) Delete(context.Context, uuid.UUID) error         { return nil }
+func (expenseRepositoryStub) List(context.Context, uuid.UUID, map[string]interface{}, int, int) ([]*entities.Expense, int64, error) {
+	return nil, 0, nil
+}
+func (expenseRepositoryStub) GetAnalytics(context.Context, uuid.UUID, *uuid.UUID, time.Time, time.Time, string) (*entities.ExpenseAnalytics, error) {
+	return nil, nil
+}
+func (expenseRepositoryStub) CreateItem(context.Context, *entities.ExpenseItem) error { return nil }
+func (expenseRepositoryStub) DeleteItemsByExpenseID(context.Context, uuid.UUID) error { return nil }
+
+func TestAnalyticsProcessorGetPurchasingAnalyticsPassesOutletName(t *testing.T) {
+	outletID := uuid.New()
+	outletName := "Main Outlet"
+	now := time.Date(2026, 5, 1, 0, 0, 0, 0, time.UTC)
+	processor := NewAnalyticsProcessorImpl(&analyticsRepositoryStub{
+		purchasingResult: &entities.PurchasingAnalytics{
+			OutletName: &outletName,
+			Summary: entities.PurchasingSummary{
+				TotalPurchases:            300,
+				RawMaterialPurchases:      125,
+				ExpensePurchases:          175,
+				TotalPurchaseOrders:       3,
+				RawMaterialPurchaseOrders: 1,
+				ExpenseCount:              2,
+			},
+			Data: []entities.PurchasingAnalyticsData{
+				{
+					Date:                      now,
+					Purchases:                 300,
+					RawMaterialPurchases:      125,
+					ExpensePurchases:          175,
+					PurchaseOrders:            3,
+					RawMaterialPurchaseOrders: 1,
+					ExpenseCount:              2,
+				},
+			},
+		},
+	}, expenseRepositoryStub{})
+
+	result, err := processor.GetPurchasingAnalytics(context.Background(), &models.PurchasingAnalyticsRequest{
+		OrganizationID: uuid.New(),
+		OutletID:       &outletID,
+		DateFrom:       now,
+		DateTo:         now,
+	})
+
+	require.NoError(t, err)
+	require.NotNil(t, result)
+	require.Equal(t, &outletID, result.OutletID)
+	require.NotNil(t, result.OutletName)
+	require.Equal(t, outletName, *result.OutletName)
+	require.Equal(t, float64(300), result.Summary.TotalPurchases)
+	require.Equal(t, float64(125), result.Summary.RawMaterialPurchases)
+	require.Equal(t, float64(175), result.Summary.ExpensePurchases)
+	require.Equal(t, int64(3), result.Summary.TotalPurchaseOrders)
+	require.Equal(t, int64(1), result.Summary.RawMaterialPurchaseOrders)
+	require.Equal(t, int64(2), result.Summary.ExpenseCount)
+	require.Len(t, result.Data, 1)
+	require.Equal(t, float64(300), result.Data[0].Purchases)
+	require.Equal(t, float64(125), result.Data[0].RawMaterialPurchases)
+	require.Equal(t, float64(175), result.Data[0].ExpensePurchases)
+}
+
+func TestAnalyticsProcessorGetProfitLossAnalyticsMapsOverviewAndReportFields(t *testing.T) {
+	productID := uuid.New()
+	categoryID := uuid.New()
+	now := time.Date(2026, 5, 1, 0, 0, 0, 0, time.UTC)
+	processor := NewAnalyticsProcessorImpl(&analyticsRepositoryStub{
+		profitLossResult: &entities.ProfitLossAnalytics{
+			Summary: entities.ProfitLossSummary{
+				TotalRevenue:       1000,
+				TotalCost:          400,
+				GrossProfit:        600,
+				GrossProfitMargin:  60,
+				TotalTax:           50,
+				TotalDiscount:      25,
+				NetProfit:          575,
+				NetProfitMargin:    57.5,
+				TotalOrders:        10,
+				AverageProfit:      57.5,
+				ProfitabilityRatio: 150,
+			},
+			Data: []entities.ProfitLossData{
+				{
+					Date:              now,
+					Revenue:           1000,
+					Cost:              400,
+					GrossProfit:       600,
+					GrossProfitMargin: 60,
+					Tax:               50,
+					Discount:          25,
+					NetProfit:         575,
+					NetProfitMargin:   57.5,
+					Orders:            10,
+				},
+			},
+			ProductData: []entities.ProductProfitData{
+				{
+					ProductID:         productID,
+					ProductName:       "Nasi",
+					CategoryID:        categoryID,
+					CategoryName:      "Food",
+					QuantitySold:      5,
+					Revenue:           500,
+					Cost:              200,
+					GrossProfit:       300,
+					GrossProfitMargin: 60,
+					AveragePrice:      100,
+					AverageCost:       40,
+					ProfitPerUnit:     60,
+				},
+			},
+			TodayRevenue: 1000,
+			TodayCost:    400,
+			MtdRevenue:   2000,
+			MtdCost:      800,
+		},
+	}, expenseRepositoryStub{})
+
+	result, err := processor.GetProfitLossAnalytics(context.Background(), &models.ProfitLossAnalyticsRequest{
+		OrganizationID: uuid.New(),
+		DateFrom:       now,
+		DateTo:         now,
+	})
+
+	require.NoError(t, err)
+	require.NotNil(t, result)
+	require.Equal(t, "day", result.GroupBy)
+	require.Equal(t, float64(1000), result.Summary.TotalRevenue)
+	require.Len(t, result.Data, 1)
+	require.Equal(t, float64(575), result.Data[0].NetProfit)
+	require.Len(t, result.ProductData, 1)
+	require.Equal(t, productID, result.ProductData[0].ProductID)
+	require.NotEmpty(t, result.MainSummary)
+	require.Equal(t, "total_omset", result.MainSummary[0].ID)
+}
+
+func TestAnalyticsProcessorGetProfitLossAnalyticsDynamicExpenseCategories(t *testing.T) {
+	now := time.Date(2026, 5, 1, 0, 0, 0, 0, time.UTC)
+	processor := NewAnalyticsProcessorImpl(&analyticsRepositoryStub{
+		profitLossResult: &entities.ProfitLossAnalytics{
+			Summary: entities.ProfitLossSummary{
+				TotalRevenue: 10000,
+				TotalCost:    4000,
+			},
+			TodayRevenue: 10000,
+			TodayCost:    4000,
+			MtdRevenue:   20000,
+			MtdCost:      8000,
+			TodayExpenseByCategory: []entities.ExpenseCategoryTotal{
+				{CategoryName: "Gaji", Amount: 1500},
+				{CategoryName: "Promosi", Amount: 300},
+				{CategoryName: "Sewa", Amount: 500},
+			},
+			MtdExpenseByCategory: []entities.ExpenseCategoryTotal{
+				{CategoryName: "Gaji", Amount: 3000},
+				{CategoryName: "Promosi", Amount: 600},
+				{CategoryName: "Sewa", Amount: 1000},
+			},
+		},
+	}, expenseRepositoryStub{})
+
+	result, err := processor.GetProfitLossAnalytics(context.Background(), &models.ProfitLossAnalyticsRequest{
+		OrganizationID: uuid.New(),
+		DateFrom:       now,
+		DateTo:         now,
+	})
+
+	require.NoError(t, err)
+	require.NotNil(t, result)
+
+	require.Len(t, result.MainSummary, 7)
+
+	require.Equal(t, "total_omset", result.MainSummary[0].ID)
+	require.Equal(t, float64(10000), result.MainSummary[0].TodayNominal)
+	require.Equal(t, float64(20000), result.MainSummary[0].MtdNominal)
+
+	require.Equal(t, "hpp", result.MainSummary[1].ID)
+	require.Equal(t, float64(4000), result.MainSummary[1].TodayNominal)
+	require.Equal(t, float64(8000), result.MainSummary[1].MtdNominal)
+
+	require.Equal(t, "laba_kotor", result.MainSummary[2].ID)
+	require.Equal(t, float64(6000), result.MainSummary[2].TodayNominal)
+	require.Equal(t, float64(12000), result.MainSummary[2].MtdNominal)
+
+	require.Equal(t, "biaya_ops", result.MainSummary[3].ID)
+	require.Equal(t, float64(800), result.MainSummary[3].TodayNominal)
+	require.Equal(t, float64(1600), result.MainSummary[3].MtdNominal)
+	require.Len(t, result.MainSummary[3].SubItems, 3) // 2 operational categories + 1 total
+
+	require.Equal(t, "by_promosi", result.MainSummary[3].SubItems[0].ID)
+	require.Equal(t, float64(300), result.MainSummary[3].SubItems[0].TodayNominal)
+	require.Equal(t, float64(600), result.MainSummary[3].SubItems[0].MtdNominal)
+
+	require.Equal(t, "by_sewa", result.MainSummary[3].SubItems[1].ID)
+	require.Equal(t, float64(500), result.MainSummary[3].SubItems[1].TodayNominal)
+	require.Equal(t, float64(1000), result.MainSummary[3].SubItems[1].MtdNominal)
+
+	require.Equal(t, "total_biaya_ops", result.MainSummary[3].SubItems[2].ID)
+	require.True(t, result.MainSummary[3].SubItems[2].IsBold)
+	require.Equal(t, float64(800), result.MainSummary[3].SubItems[2].TodayNominal)
+	require.Equal(t, float64(1600), result.MainSummary[3].SubItems[2].MtdNominal)
+
+	require.Equal(t, "laba_rugi_sblm_gaji", result.MainSummary[4].ID)
+	require.Equal(t, float64(5200), result.MainSummary[4].TodayNominal)
+	require.Equal(t, float64(10400), result.MainSummary[4].MtdNominal)
+
+	require.Equal(t, "biaya_gaji", result.MainSummary[5].ID)
+	require.Equal(t, float64(1500), result.MainSummary[5].TodayNominal)
+	require.Equal(t, float64(3000), result.MainSummary[5].MtdNominal)
+
+	require.Equal(t, "laba_rugi", result.MainSummary[6].ID)
+	require.Equal(t, float64(3700), result.MainSummary[6].TodayNominal)
+	require.Equal(t, float64(7400), result.MainSummary[6].MtdNominal)
+	require.True(t, result.MainSummary[6].IsBold)
+}
+
+func TestAnalyticsProcessorGetExclusiveSummaryPeriodCalculatesTotalsAndReimburse(t *testing.T) {
+	now := time.Date(2026, 5, 26, 0, 0, 0, 0, time.UTC)
+	processor := NewAnalyticsProcessorImpl(&analyticsRepositoryStub{
+		exclusiveSummaryResults: []*entities.ExclusiveSummaryAnalytics{
+			{
+				SalesTotal: 1000,
+				HPPBreakdown: []entities.ExclusiveSummaryCategoryTotal{
+					{CategoryCode: "RAW", CategoryName: "Raw", Amount: 400},
+				},
+				OperationalExpenseBreakdown: []entities.ExclusiveSummaryCategoryTotal{
+					{CategoryCode: "GAJI", CategoryName: "Gaji", Amount: 250},
+					{CategoryCode: "OPS", CategoryName: "Operasional", Amount: 100},
+				},
+				DailySummary: []entities.ExclusiveSummaryDailySummary{
+					{Date: now, TransactionCount: 3, TotalCost: 750},
+				},
+				DailyTransactions: []entities.ExclusiveSummaryDailyTransaction{
+					{Date: now, CategoryCode: "RAW", CategoryName: "Raw", Description: "beras", Amount: 400, Source: "purchase_order"},
+					{Date: now, CategoryCode: "GAJI", CategoryName: "Gaji", Description: "gaji karyawan", Amount: 200, Source: "purchase_order"},
+					{Date: now, CategoryCode: "GAJI", CategoryName: "Gaji", Description: "DW", Amount: 50, Source: "purchase_order"},
+					{Date: now, CategoryCode: "OPS", CategoryName: "Operasional", Description: "atk", Amount: 100, Source: "purchase_order"},
+				},
+			},
+		},
+	}, expenseRepositoryStub{})
+
+	result, err := processor.GetExclusiveSummaryPeriod(context.Background(), &models.ExclusiveSummaryPeriodRequest{
+		OrganizationID:                uuid.New(),
+		DateFrom:                      now,
+		DateTo:                        now,
+		ExcludeGajiStaffFromReimburse: true,
+	})
+
+	require.NoError(t, err)
+	require.NotNil(t, result)
+	require.Equal(t, float64(1000), result.Summary.Sales)
+	require.Equal(t, float64(400), result.Summary.HPP)
+	require.Equal(t, float64(600), result.Summary.GrossProfit)
+	require.Equal(t, float64(350), result.Summary.OperationalExpensesTotal)
+	require.Equal(t, float64(750), result.Summary.TotalCost)
+	require.Equal(t, float64(250), result.Summary.NetProfit)
+	require.Equal(t, float64(250), result.Summary.SalaryTotal)
+	require.Equal(t, float64(50), result.Summary.SalaryDW)
+	require.Equal(t, float64(200), result.Summary.SalaryStaff)
+	require.Equal(t, float64(100), result.Summary.OtherOperationalExpenses)
+	require.Equal(t, float64(200), result.Reimburse.ExcludedSalaryStaff)
+	require.Equal(t, float64(550), result.Reimburse.TotalReimburse)
+	require.Len(t, result.HPPBreakdown, 1)
+	require.Equal(t, float64(100), result.HPPBreakdown[0].Percentage)
+	require.Len(t, result.DailySummary, 1)
+	require.Len(t, result.DailyTransactions, 4)
+}
+
+func TestAnalyticsProcessorGetExclusiveSummaryMonthlyBuildsSummaryAndBuckets(t *testing.T) {
+	location, err := time.LoadLocation("Asia/Jakarta")
+	require.NoError(t, err)
+	month := time.Date(2026, 5, 1, 0, 0, 0, 0, location)
+	openingBalance := 5000000.0
+	closingBalance := 5000000.0
+	notes := "Main cash account for daily transactions"
+	stub := &analyticsRepositoryStub{
+		exclusiveSummaryResults: []*entities.ExclusiveSummaryAnalytics{
+			{SalesTotal: 1000, HPPBreakdown: []entities.ExclusiveSummaryCategoryTotal{{Amount: 400}}, OperationalExpenseBreakdown: []entities.ExclusiveSummaryCategoryTotal{{Amount: 100}}},
+			{SalesTotal: 100, HPPBreakdown: []entities.ExclusiveSummaryCategoryTotal{{Amount: 40}}},
+			{SalesTotal: 200, HPPBreakdown: []entities.ExclusiveSummaryCategoryTotal{{Amount: 80}}},
+			{SalesTotal: 300, HPPBreakdown: []entities.ExclusiveSummaryCategoryTotal{{Amount: 120}}},
+			{SalesTotal: 400, HPPBreakdown: []entities.ExclusiveSummaryCategoryTotal{{Amount: 160}}},
+			{SalesTotal: 500, HPPBreakdown: []entities.ExclusiveSummaryCategoryTotal{{Amount: 200}}},
+		},
+		bankBalances: []entities.ExclusiveSummaryBankBalance{
+			{Bank: "Cash and Bank", OpeningBalance: &openingBalance, ClosingBalance: &closingBalance, Notes: &notes},
+		},
+	}
+	processor := NewAnalyticsProcessorImpl(stub, expenseRepositoryStub{})
+
+	result, err := processor.GetExclusiveSummaryMonthly(context.Background(), &models.ExclusiveSummaryMonthlyRequest{
+		OrganizationID: uuid.New(),
+		Month:          month,
+	})
+
+	require.NoError(t, err)
+	require.NotNil(t, result)
+	require.Equal(t, "2026-05", result.Month)
+	require.Equal(t, float64(1000), result.Summary.TotalSales)
+	require.Equal(t, float64(400), result.Summary.HPP)
+	require.Equal(t, float64(500), result.Summary.NetProfit)
+	require.InDelta(t, float64(50), result.Summary.NetProfitMargin, 0.0001)
+	require.Len(t, result.Periods, 5)
+	require.Equal(t, "1 - 3 Mei", result.Periods[0].Label)
+	require.Equal(t, "25 - 31 Mei", result.Periods[4].Label)
+	require.Len(t, result.BankBalance, 1)
+	require.Equal(t, "Cash and Bank", result.BankBalance[0].Bank)
+	require.NotNil(t, result.BankBalance[0].OpeningBalance)
+	require.Equal(t, openingBalance, *result.BankBalance[0].OpeningBalance)
+	require.NotNil(t, result.BankBalance[0].ClosingBalance)
+	require.Equal(t, closingBalance, *result.BankBalance[0].ClosingBalance)
+	require.Nil(t, result.BankBalance[0].IncomingMutation)
+	require.Nil(t, result.BankBalance[0].OutgoingMutation)
+	require.NotNil(t, result.BankBalance[0].Notes)
+	require.Equal(t, notes, *result.BankBalance[0].Notes)
+	require.Equal(t, 6, stub.exclusiveSummaryCalls)
+}

internal/processor/expense_processor.go

@@ -0,0 +1,352 @@
+package processor
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"apskel-pos-be/internal/constants"
+	"apskel-pos-be/internal/entities"
+	"apskel-pos-be/internal/mappers"
+	"apskel-pos-be/internal/models"
+
+	"github.com/google/uuid"
+)
+
+type ExpenseProcessor interface {
+	CreateExpense(ctx context.Context, organizationID uuid.UUID, req *models.CreateExpenseRequest) (*models.ExpenseResponse, error)
+	UpdateExpense(ctx context.Context, id, organizationID uuid.UUID, req *models.UpdateExpenseRequest) (*models.ExpenseResponse, error)
+	DeleteExpense(ctx context.Context, id, organizationID uuid.UUID) error
+	GetExpenseByID(ctx context.Context, id, organizationID uuid.UUID) (*models.ExpenseResponse, error)
+	ListExpenses(ctx context.Context, organizationID uuid.UUID, filters map[string]interface{}, page, limit int) ([]*models.ExpenseResponse, int, error)
+	GetExpenseAnalytics(ctx context.Context, req *models.ExpenseAnalyticsRequest) (*models.ExpenseAnalyticsResponse, error)
+}
+
+type ExpenseProcessorImpl struct {
+	expenseRepo          ExpenseRepository
+	purchaseCategoryRepo PurchaseCategoryRepository
+}
+
+func NewExpenseProcessorImpl(expenseRepo ExpenseRepository, purchaseCategoryRepo PurchaseCategoryRepository) *ExpenseProcessorImpl {
+	return &ExpenseProcessorImpl{
+		expenseRepo:          expenseRepo,
+		purchaseCategoryRepo: purchaseCategoryRepo,
+	}
+}
+
+func (p *ExpenseProcessorImpl) CreateExpense(ctx context.Context, organizationID uuid.UUID, req *models.CreateExpenseRequest) (*models.ExpenseResponse, error) {
+	outletID, err := uuid.Parse(req.OutletID)
+	if err != nil {
+		return nil, fmt.Errorf("invalid outlet_id: %w", err)
+	}
+
+	transactionDate, err := time.Parse("2006-01-02", req.TransactionDate)
+	if err != nil {
+		return nil, fmt.Errorf("invalid transaction_date format, expected YYYY-MM-DD: %w", err)
+	}
+
+	status := string(constants.ExpenseStatusDraft)
+	if req.Status != nil {
+		status = *req.Status
+	}
+
+	items := make([]entities.ExpenseItem, len(req.Items))
+	for i, itemReq := range req.Items {
+		chartOfAccountID, err := uuid.Parse(itemReq.ChartOfAccountID)
+		if err != nil {
+			return nil, fmt.Errorf("invalid chart_of_account_id for item: %w", err)
+		}
+
+		purchaseCategoryID, err := uuid.Parse(itemReq.PurchaseCategoryID)
+		if err != nil {
+			return nil, fmt.Errorf("invalid purchase_category_id for item: %w", err)
+		}
+		if err := p.validateExpensePurchaseCategory(ctx, purchaseCategoryID, organizationID); err != nil {
+			return nil, err
+		}
+
+		items[i] = entities.ExpenseItem{
+			ChartOfAccountID:   chartOfAccountID,
+			PurchaseCategoryID: purchaseCategoryID,
+			Item:               itemReq.Item,
+			Description:        itemReq.Description,
+			Amount:             itemReq.Amount,
+		}
+	}
+
+	expenseEntity := &entities.Expense{
+		OrganizationID:  organizationID,
+		OutletID:        outletID,
+		Receiver:        req.Receiver,
+		TransactionDate: transactionDate,
+		CodeNumber:      req.CodeNumber,
+		Status:          status,
+		Description:     req.Description,
+		Tax:             req.Tax,
+		Total:           req.Total,
+	}
+
+	err = p.expenseRepo.Create(ctx, expenseEntity)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create expense: %w", err)
+	}
+
+	for i := range items {
+		items[i].ExpenseID = expenseEntity.ID
+
+		err = p.expenseRepo.CreateItem(ctx, &items[i])
+		if err != nil {
+			return nil, fmt.Errorf("failed to create expense item: %w", err)
+		}
+	}
+
+	created, err := p.expenseRepo.GetByID(ctx, expenseEntity.ID)
+	if err != nil {
+		return mappers.ExpenseEntityToResponse(expenseEntity), nil
+	}
+
+	return mappers.ExpenseEntityToResponse(created), nil
+}
+
+func (p *ExpenseProcessorImpl) UpdateExpense(ctx context.Context, id, organizationID uuid.UUID, req *models.UpdateExpenseRequest) (*models.ExpenseResponse, error) {
+	expenseEntity, err := p.expenseRepo.GetByIDAndOrganizationID(ctx, id, organizationID)
+	if err != nil {
+		return nil, fmt.Errorf("expense not found: %w", err)
+	}
+
+	if req.Receiver != nil {
+		expenseEntity.Receiver = *req.Receiver
+	}
+	if req.TransactionDate != nil {
+		parsedDate, err := time.Parse("2006-01-02", *req.TransactionDate)
+		if err != nil {
+			return nil, fmt.Errorf("invalid transaction_date format, expected YYYY-MM-DD: %w", err)
+		}
+		expenseEntity.TransactionDate = parsedDate
+	}
+	if req.CodeNumber != nil {
+		expenseEntity.CodeNumber = *req.CodeNumber
+	}
+	if req.Status != nil {
+		expenseEntity.Status = *req.Status
+	}
+	if req.OutletID != nil {
+		outletID, err := uuid.Parse(*req.OutletID)
+		if err != nil {
+			return nil, fmt.Errorf("invalid outlet_id: %w", err)
+		}
+		expenseEntity.OutletID = outletID
+	}
+	if req.Description != nil {
+		expenseEntity.Description = req.Description
+	}
+	if req.Tax != nil {
+		expenseEntity.Tax = *req.Tax
+	}
+	if req.Total != nil {
+		expenseEntity.Total = *req.Total
+	}
+	if req.Reserved1 != nil {
+		expenseEntity.Reserved1 = req.Reserved1
+	}
+
+	var items []entities.ExpenseItem
+	if req.Items != nil {
+		items = make([]entities.ExpenseItem, len(req.Items))
+		for i, itemReq := range req.Items {
+			chartOfAccountID := uuid.Nil
+			if itemReq.ChartOfAccountID != nil {
+				chartOfAccountID, err = uuid.Parse(*itemReq.ChartOfAccountID)
+				if err != nil {
+					return nil, fmt.Errorf("invalid chart_of_account_id for item: %w", err)
+				}
+			}
+
+			if itemReq.PurchaseCategoryID == nil {
+				return nil, fmt.Errorf("purchase_category_id is required for item")
+			}
+			purchaseCategoryID, err := uuid.Parse(*itemReq.PurchaseCategoryID)
+			if err != nil {
+				return nil, fmt.Errorf("invalid purchase_category_id for item: %w", err)
+			}
+			if err := p.validateExpensePurchaseCategory(ctx, purchaseCategoryID, organizationID); err != nil {
+				return nil, err
+			}
+
+			amount := 0.0
+			if itemReq.Amount != nil {
+				amount = *itemReq.Amount
+			}
+			item := ""
+			if itemReq.Item != nil {
+				item = *itemReq.Item
+			}
+
+			items[i] = entities.ExpenseItem{
+				ExpenseID:          expenseEntity.ID,
+				ChartOfAccountID:   chartOfAccountID,
+				PurchaseCategoryID: purchaseCategoryID,
+				Item:               item,
+				Description:        itemReq.Description,
+				Amount:             amount,
+			}
+		}
+
+		err = p.expenseRepo.DeleteItemsByExpenseID(ctx, expenseEntity.ID)
+		if err != nil {
+			return nil, fmt.Errorf("failed to delete existing items: %w", err)
+		}
+
+		for i := range items {
+			err = p.expenseRepo.CreateItem(ctx, &items[i])
+			if err != nil {
+				return nil, fmt.Errorf("failed to create expense item: %w", err)
+			}
+		}
+	}
+
+	err = p.expenseRepo.Update(ctx, expenseEntity)
+	if err != nil {
+		return nil, fmt.Errorf("failed to update expense: %w", err)
+	}
+
+	updated, err := p.expenseRepo.GetByID(ctx, id)
+	if err != nil {
+		return mappers.ExpenseEntityToResponse(expenseEntity), nil
+	}
+
+	return mappers.ExpenseEntityToResponse(updated), nil
+}
+
+func (p *ExpenseProcessorImpl) DeleteExpense(ctx context.Context, id, organizationID uuid.UUID) error {
+	_, err := p.expenseRepo.GetByIDAndOrganizationID(ctx, id, organizationID)
+	if err != nil {
+		return fmt.Errorf("expense not found: %w", err)
+	}
+
+	err = p.expenseRepo.Delete(ctx, id)
+	if err != nil {
+		return fmt.Errorf("failed to delete expense: %w", err)
+	}
+
+	return nil
+}
+
+func (p *ExpenseProcessorImpl) GetExpenseByID(ctx context.Context, id, organizationID uuid.UUID) (*models.ExpenseResponse, error) {
+	expenseEntity, err := p.expenseRepo.GetByIDAndOrganizationID(ctx, id, organizationID)
+	if err != nil {
+		return nil, fmt.Errorf("expense not found: %w", err)
+	}
+
+	return mappers.ExpenseEntityToResponse(expenseEntity), nil
+}
+
+func (p *ExpenseProcessorImpl) ListExpenses(ctx context.Context, organizationID uuid.UUID, filters map[string]interface{}, page, limit int) ([]*models.ExpenseResponse, int, error) {
+	offset := (page - 1) * limit
+	expenseEntities, total, err := p.expenseRepo.List(ctx, organizationID, filters, limit, offset)
+	if err != nil {
+		return nil, 0, fmt.Errorf("failed to list expenses: %w", err)
+	}
+
+	expenseResponses := mappers.ExpenseEntitiesToResponses(expenseEntities)
+	totalPages := int((total + int64(limit) - 1) / int64(limit))
+
+	return expenseResponses, totalPages, nil
+}
+
+func (p *ExpenseProcessorImpl) GetExpenseAnalytics(ctx context.Context, req *models.ExpenseAnalyticsRequest) (*models.ExpenseAnalyticsResponse, error) {
+	if req.DateFrom.After(req.DateTo) {
+		return nil, fmt.Errorf("date_from cannot be after date_to")
+	}
+
+	if req.GroupBy == "" {
+		req.GroupBy = "day"
+	}
+
+	result, err := p.expenseRepo.GetAnalytics(ctx, req.OrganizationID, req.OutletID, req.DateFrom, req.DateTo, req.GroupBy)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get expense analytics: %w", err)
+	}
+
+	data := make([]models.ExpenseAnalyticsData, len(result.Data))
+	for i, item := range result.Data {
+		data[i] = models.ExpenseAnalyticsData{
+			Date:         item.Date,
+			Expenses:     item.Expenses,
+			ExpenseCount: item.ExpenseCount,
+			Tax:          item.Tax,
+			Items:        item.Items,
+			Categories:   item.Categories,
+		}
+	}
+
+	categoryData := make([]models.ExpenseAnalyticsCategoryData, len(result.CategoryData))
+	for i, item := range result.CategoryData {
+		categoryData[i] = models.ExpenseAnalyticsCategoryData{
+			PurchaseCategoryID:   item.PurchaseCategoryID,
+			PurchaseCategoryName: item.PurchaseCategoryName,
+			PurchaseCategoryType: item.PurchaseCategoryType,
+			TotalAmount:          item.TotalAmount,
+			ExpenseCount:         item.ExpenseCount,
+			ItemCount:            item.ItemCount,
+		}
+	}
+
+	chartOfAccountData := make([]models.ExpenseAnalyticsChartOfAccountData, len(result.ChartOfAccountData))
+	for i, item := range result.ChartOfAccountData {
+		chartOfAccountData[i] = models.ExpenseAnalyticsChartOfAccountData{
+			ChartOfAccountID:   item.ChartOfAccountID,
+			ChartOfAccountName: item.ChartOfAccountName,
+			TotalAmount:        item.TotalAmount,
+			ExpenseCount:       item.ExpenseCount,
+			ItemCount:          item.ItemCount,
+		}
+	}
+
+	itemData := make([]models.ExpenseAnalyticsItemData, len(result.ItemData))
+	for i, item := range result.ItemData {
+		itemData[i] = models.ExpenseAnalyticsItemData{
+			Item:         item.Item,
+			TotalAmount:  item.TotalAmount,
+			ExpenseCount: item.ExpenseCount,
+			ItemCount:    item.ItemCount,
+		}
+	}
+
+	return &models.ExpenseAnalyticsResponse{
+		OrganizationID: req.OrganizationID,
+		OutletID:       req.OutletID,
+		DateFrom:       req.DateFrom,
+		DateTo:         req.DateTo,
+		GroupBy:        req.GroupBy,
+		Summary: models.ExpenseAnalyticsSummary{
+			TotalExpenses:       result.Summary.TotalExpenses,
+			TotalExpenseCount:   result.Summary.TotalExpenseCount,
+			TotalTax:            result.Summary.TotalTax,
+			AverageExpenseValue: result.Summary.AverageExpenseValue,
+			TotalCategories:     result.Summary.TotalCategories,
+			TotalItems:          result.Summary.TotalItems,
+		},
+		Data:               data,
+		CategoryData:       categoryData,
+		ChartOfAccountData: chartOfAccountData,
+		ItemData:           itemData,
+	}, nil
+}
+
+func (p *ExpenseProcessorImpl) validateExpensePurchaseCategory(ctx context.Context, categoryID, organizationID uuid.UUID) error {
+	category, err := p.purchaseCategoryRepo.GetByIDAndOrganizationID(ctx, categoryID, organizationID)
+	if err != nil {
+		return fmt.Errorf("purchase category not found: %w", err)
+	}
+
+	if !category.IsActive {
+		return fmt.Errorf("purchase category is inactive")
+	}
+
+	if category.Type != entities.PurchaseCategoryTypeExpense {
+		return fmt.Errorf("purchase category must be expense")
+	}
+
+	return nil
+}

internal/processor/expense_processor_test.go

@@ -0,0 +1,291 @@
+package processor
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"apskel-pos-be/internal/entities"
+	"apskel-pos-be/internal/models"
+
+	"github.com/google/uuid"
+	"github.com/stretchr/testify/require"
+)
+
+type expenseRepositoryCaptureStub struct {
+	createdExpense *entities.Expense
+	createdItems   []*entities.ExpenseItem
+	analytics      *entities.ExpenseAnalytics
+}
+
+type expensePurchaseCategoryRepositoryStub struct {
+	category *entities.PurchaseCategory
+}
+
+func (*expensePurchaseCategoryRepositoryStub) Create(context.Context, *entities.PurchaseCategory) error {
+	return nil
+}
+
+func (s *expensePurchaseCategoryRepositoryStub) GetByIDAndOrganizationID(context.Context, uuid.UUID, uuid.UUID) (*entities.PurchaseCategory, error) {
+	return s.category, nil
+}
+
+func (*expensePurchaseCategoryRepositoryStub) Update(context.Context, *entities.PurchaseCategory) error {
+	return nil
+}
+
+func (*expensePurchaseCategoryRepositoryStub) SoftDelete(context.Context, uuid.UUID, uuid.UUID) error {
+	return nil
+}
+
+func (*expensePurchaseCategoryRepositoryStub) List(context.Context, uuid.UUID, map[string]interface{}, int, int) ([]*entities.PurchaseCategory, int64, error) {
+	return nil, 0, nil
+}
+
+func (*expensePurchaseCategoryRepositoryStub) ExistsByCode(context.Context, uuid.UUID, string, *uuid.UUID) (bool, error) {
+	return false, nil
+}
+
+func newExpensePurchaseCategoryRepo(categoryID uuid.UUID, categoryType entities.PurchaseCategoryType) *expensePurchaseCategoryRepositoryStub {
+	return &expensePurchaseCategoryRepositoryStub{
+		category: &entities.PurchaseCategory{
+			ID:       categoryID,
+			Name:     "Operational",
+			Type:     categoryType,
+			IsActive: true,
+		},
+	}
+}
+
+func (s *expenseRepositoryCaptureStub) Create(_ context.Context, expense *entities.Expense) error {
+	if expense.ID == uuid.Nil {
+		expense.ID = uuid.New()
+	}
+	s.createdExpense = expense
+	return nil
+}
+
+func (s *expenseRepositoryCaptureStub) GetByID(context.Context, uuid.UUID) (*entities.Expense, error) {
+	if s.createdExpense == nil {
+		return nil, nil
+	}
+	items := make([]entities.ExpenseItem, len(s.createdItems))
+	for i, item := range s.createdItems {
+		items[i] = *item
+	}
+	s.createdExpense.Items = items
+	return s.createdExpense, nil
+}
+
+func (*expenseRepositoryCaptureStub) GetByIDAndOrganizationID(context.Context, uuid.UUID, uuid.UUID) (*entities.Expense, error) {
+	return nil, nil
+}
+func (*expenseRepositoryCaptureStub) Update(context.Context, *entities.Expense) error { return nil }
+func (*expenseRepositoryCaptureStub) Delete(context.Context, uuid.UUID) error         { return nil }
+func (*expenseRepositoryCaptureStub) List(context.Context, uuid.UUID, map[string]interface{}, int, int) ([]*entities.Expense, int64, error) {
+	return nil, 0, nil
+}
+func (s *expenseRepositoryCaptureStub) GetAnalytics(context.Context, uuid.UUID, *uuid.UUID, time.Time, time.Time, string) (*entities.ExpenseAnalytics, error) {
+	return s.analytics, nil
+}
+func (s *expenseRepositoryCaptureStub) CreateItem(_ context.Context, item *entities.ExpenseItem) error {
+	if item.ID == uuid.Nil {
+		item.ID = uuid.New()
+	}
+	s.createdItems = append(s.createdItems, item)
+	return nil
+}
+func (*expenseRepositoryCaptureStub) DeleteItemsByExpenseID(context.Context, uuid.UUID) error {
+	return nil
+}
+
+func TestExpenseProcessorCreatePersistsItemName(t *testing.T) {
+	repo := &expenseRepositoryCaptureStub{}
+	purchaseCategoryID := uuid.New()
+	p := NewExpenseProcessorImpl(repo, newExpensePurchaseCategoryRepo(purchaseCategoryID, entities.PurchaseCategoryTypeExpense))
+	chartOfAccountID := uuid.New()
+
+	resp, err := p.CreateExpense(context.Background(), uuid.New(), &models.CreateExpenseRequest{
+		Receiver:        "Cashier",
+		TransactionDate: "2026-05-29",
+		CodeNumber:      "EXP-001",
+		OutletID:        uuid.NewString(),
+		Total:           10000,
+		Items: []models.CreateExpenseItemRequest{
+			{
+				ChartOfAccountID:   chartOfAccountID.String(),
+				PurchaseCategoryID: purchaseCategoryID.String(),
+				Item:               "Cleaning supplies",
+				Amount:             10000,
+			},
+		},
+	})
+
+	require.NoError(t, err)
+	require.NotNil(t, resp)
+	require.Len(t, repo.createdItems, 1)
+	require.Equal(t, "Cleaning supplies", repo.createdItems[0].Item)
+	require.Equal(t, purchaseCategoryID, repo.createdItems[0].PurchaseCategoryID)
+	require.Len(t, resp.Items, 1)
+	require.Equal(t, "Cleaning supplies", resp.Items[0].Item)
+}
+
+func TestExpenseProcessorCreateDefaultsStatusToDraft(t *testing.T) {
+	repo := &expenseRepositoryCaptureStub{}
+	purchaseCategoryID := uuid.New()
+	p := NewExpenseProcessorImpl(repo, newExpensePurchaseCategoryRepo(purchaseCategoryID, entities.PurchaseCategoryTypeExpense))
+
+	resp, err := p.CreateExpense(context.Background(), uuid.New(), &models.CreateExpenseRequest{
+		Receiver:        "Cashier",
+		TransactionDate: "2026-05-29",
+		CodeNumber:      "EXP-001",
+		OutletID:        uuid.NewString(),
+		Total:           10000,
+		Items: []models.CreateExpenseItemRequest{
+			{
+				ChartOfAccountID:   uuid.NewString(),
+				PurchaseCategoryID: purchaseCategoryID.String(),
+				Item:               "Cleaning supplies",
+				Amount:             10000,
+			},
+		},
+	})
+
+	require.NoError(t, err)
+	require.NotNil(t, resp)
+	require.Equal(t, "draft", repo.createdExpense.Status)
+	require.Equal(t, "draft", resp.Status)
+}
+
+func TestExpenseProcessorCreatePersistsProvidedStatus(t *testing.T) {
+	repo := &expenseRepositoryCaptureStub{}
+	purchaseCategoryID := uuid.New()
+	p := NewExpenseProcessorImpl(repo, newExpensePurchaseCategoryRepo(purchaseCategoryID, entities.PurchaseCategoryTypeExpense))
+	status := "approved"
+
+	resp, err := p.CreateExpense(context.Background(), uuid.New(), &models.CreateExpenseRequest{
+		Receiver:        "Cashier",
+		TransactionDate: "2026-05-29",
+		CodeNumber:      "EXP-001",
+		OutletID:        uuid.NewString(),
+		Status:          &status,
+		Total:           10000,
+		Items: []models.CreateExpenseItemRequest{
+			{
+				ChartOfAccountID:   uuid.NewString(),
+				PurchaseCategoryID: purchaseCategoryID.String(),
+				Item:               "Cleaning supplies",
+				Amount:             10000,
+			},
+		},
+	})
+
+	require.NoError(t, err)
+	require.NotNil(t, resp)
+	require.Equal(t, "approved", repo.createdExpense.Status)
+	require.Equal(t, "approved", resp.Status)
+}
+
+func TestExpenseProcessorCreateRejectsRawMaterialPurchaseCategory(t *testing.T) {
+	repo := &expenseRepositoryCaptureStub{}
+	purchaseCategoryID := uuid.New()
+	p := NewExpenseProcessorImpl(repo, newExpensePurchaseCategoryRepo(purchaseCategoryID, entities.PurchaseCategoryTypeRawMaterial))
+
+	resp, err := p.CreateExpense(context.Background(), uuid.New(), &models.CreateExpenseRequest{
+		Receiver:        "Cashier",
+		TransactionDate: "2026-05-29",
+		CodeNumber:      "EXP-001",
+		OutletID:        uuid.NewString(),
+		Total:           10000,
+		Items: []models.CreateExpenseItemRequest{
+			{
+				ChartOfAccountID:   uuid.NewString(),
+				PurchaseCategoryID: purchaseCategoryID.String(),
+				Item:               "Cleaning supplies",
+				Amount:             10000,
+			},
+		},
+	})
+
+	require.Error(t, err)
+	require.Nil(t, resp)
+	require.Contains(t, err.Error(), "expense")
+}
+
+func TestExpenseProcessorGetExpenseAnalyticsDefaultsGroupByAndMapsResponse(t *testing.T) {
+	coaID := uuid.New()
+	purchaseCategoryID := uuid.New()
+	outletID := uuid.New()
+	now := time.Date(2026, 5, 1, 0, 0, 0, 0, time.UTC)
+	repo := &expenseRepositoryCaptureStub{
+		analytics: &entities.ExpenseAnalytics{
+			Summary: entities.ExpenseAnalyticsSummary{
+				TotalExpenses:       100000,
+				TotalExpenseCount:   2,
+				TotalTax:            10000,
+				AverageExpenseValue: 50000,
+				TotalCategories:     1,
+				TotalItems:          2,
+			},
+			Data: []entities.ExpenseAnalyticsData{
+				{
+					Date:         now,
+					Expenses:     100000,
+					ExpenseCount: 2,
+					Tax:          10000,
+					Items:        2,
+					Categories:   1,
+				},
+			},
+			CategoryData: []entities.ExpenseAnalyticsCategoryData{
+				{
+					PurchaseCategoryID:   purchaseCategoryID,
+					PurchaseCategoryName: "Operational Supplies",
+					PurchaseCategoryType: "expense",
+					TotalAmount:          100000,
+					ExpenseCount:         2,
+					ItemCount:            2,
+				},
+			},
+			ChartOfAccountData: []entities.ExpenseAnalyticsChartOfAccountData{
+				{
+					ChartOfAccountID:   coaID,
+					ChartOfAccountName: "Operational",
+					TotalAmount:        100000,
+					ExpenseCount:       2,
+					ItemCount:          2,
+				},
+			},
+			ItemData: []entities.ExpenseAnalyticsItemData{
+				{
+					Item:         "Cleaning supplies",
+					TotalAmount:  100000,
+					ExpenseCount: 2,
+					ItemCount:    2,
+				},
+			},
+		},
+	}
+	p := NewExpenseProcessorImpl(repo, newExpensePurchaseCategoryRepo(purchaseCategoryID, entities.PurchaseCategoryTypeExpense))
+
+	resp, err := p.GetExpenseAnalytics(context.Background(), &models.ExpenseAnalyticsRequest{
+		OrganizationID: uuid.New(),
+		OutletID:       &outletID,
+		DateFrom:       now,
+		DateTo:         now,
+	})
+
+	require.NoError(t, err)
+	require.NotNil(t, resp)
+	require.Equal(t, "day", resp.GroupBy)
+	require.Equal(t, &outletID, resp.OutletID)
+	require.Equal(t, float64(100000), resp.Summary.TotalExpenses)
+	require.Len(t, resp.Data, 1)
+	require.Equal(t, int64(2), resp.Data[0].ExpenseCount)
+	require.Len(t, resp.CategoryData, 1)
+	require.Equal(t, purchaseCategoryID, resp.CategoryData[0].PurchaseCategoryID)
+	require.Len(t, resp.ChartOfAccountData, 1)
+	require.Equal(t, coaID, resp.ChartOfAccountData[0].ChartOfAccountID)
+	require.Len(t, resp.ItemData, 1)
+	require.Equal(t, "Cleaning supplies", resp.ItemData[0].Item)
+}

internal/processor/expense_repository.go

@@ -0,0 +1,21 @@
+package processor
+
+import (
+	"apskel-pos-be/internal/entities"
+	"context"
+	"time"
+
+	"github.com/google/uuid"
+)
+
+type ExpenseRepository interface {
+	Create(ctx context.Context, expense *entities.Expense) error
+	GetByID(ctx context.Context, id uuid.UUID) (*entities.Expense, error)
+	GetByIDAndOrganizationID(ctx context.Context, id, organizationID uuid.UUID) (*entities.Expense, error)
+	Update(ctx context.Context, expense *entities.Expense) error
+	Delete(ctx context.Context, id uuid.UUID) error
+	List(ctx context.Context, organizationID uuid.UUID, filters map[string]interface{}, limit, offset int) ([]*entities.Expense, int64, error)
+	GetAnalytics(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time, groupBy string) (*entities.ExpenseAnalytics, error)
+	CreateItem(ctx context.Context, item *entities.ExpenseItem) error
+	DeleteItemsByExpenseID(ctx context.Context, expenseID uuid.UUID) error
+}

internal/processor/order_processor.go

@@ -1,7 +1,6 @@
 package processor
 
 import (
-	"apskel-pos-be/internal/constants"
 	"context"
 	"errors"
 	"fmt"
@@ -87,7 +86,7 @@ type CustomerRepository interface {
 }
 
 type InventoryMovementService interface {
-	CreateIngredientMovement(ctx context.Context, ingredientID, organizationID, outletID, userID uuid.UUID, movementType entities.InventoryMovementType, quantity float64, unitCost float64, reason string, referenceType *entities.InventoryMovementReferenceType, referenceID *uuid.UUID) error
+	CreateIngredientMovement(ctx context.Context, ingredientID, organizationID, outletID, userID uuid.UUID, movementType entities.InventoryMovementType, quantity float64, unitCost float64, reason string, referenceType *entities.InventoryMovementReferenceType, referenceID *uuid.UUID, purchaseOrderItemID *uuid.UUID) error
 	CreateProductMovement(ctx context.Context, productID, organizationID, outletID, userID uuid.UUID, movementType entities.InventoryMovementType, quantity float64, unitCost float64, reason string, referenceType *entities.InventoryMovementReferenceType, referenceID *uuid.UUID) error
 }
 
@@ -339,7 +338,7 @@ func (p *OrderProcessorImpl) AddToOrder(ctx context.Context, orderID uuid.UUID,
 			ProductID:        itemReq.ProductID,
 			ProductVariantID: itemReq.ProductVariantID,
 			Quantity:         itemReq.Quantity,
-			UnitPrice:        unitPrice, // Use price from database
+			UnitPrice:        unitPrice,
 			TotalPrice:       itemTotalPrice,
 			UnitCost:         unitCost,
 			TotalCost:        itemTotalCost,
@@ -388,31 +387,10 @@ func (p *OrderProcessorImpl) AddToOrder(ctx context.Context, orderID uuid.UUID,
 			return nil, fmt.Errorf("failed to create order item: %w", err)
 		}
 
-		itemResponse := models.OrderItemResponse{
-			ID:                  orderItem.ID,
-			OrderID:             orderItem.OrderID,
-			ProductID:           orderItem.ProductID,
-			ProductVariantID:    orderItem.ProductVariantID,
-			Quantity:            orderItem.Quantity,
-			UnitPrice:           orderItem.UnitPrice,
-			TotalPrice:          orderItem.TotalPrice,
-			UnitCost:            orderItem.UnitCost,
-			TotalCost:           orderItem.TotalCost,
-			RefundAmount:        orderItem.RefundAmount,
-			RefundQuantity:      orderItem.RefundQuantity,
-			IsPartiallyRefunded: orderItem.IsPartiallyRefunded,
-			IsFullyRefunded:     orderItem.IsFullyRefunded,
-			RefundReason:        orderItem.RefundReason,
-			RefundedAt:          orderItem.RefundedAt,
-			RefundedBy:          orderItem.RefundedBy,
-			Modifiers:           []map[string]interface{}(orderItem.Modifiers),
-			Notes:               orderItem.Notes,
-			Metadata:            map[string]interface{}(orderItem.Metadata),
-			Status:              constants.OrderItemStatus(orderItem.Status),
-			CreatedAt:           orderItem.CreatedAt,
-			UpdatedAt:           orderItem.UpdatedAt,
+		itemResponse := mappers.OrderItemEntityToResponse(orderItem, order.OutletID)
+		if itemResponse != nil {
+			addedItemResponses = append(addedItemResponses, *itemResponse)
 		}
-		addedItemResponses = append(addedItemResponses, itemResponse)
 	}
 
 	orderWithRelations, err := p.orderRepo.GetWithRelations(ctx, orderID)
@@ -616,6 +594,10 @@ func (p *OrderProcessorImpl) VoidOrder(ctx context.Context, req *models.VoidOrde
 				return fmt.Errorf("order item does not belong to this order")
 			}
 
+			if orderItem.Status == entities.OrderItemStatusCancelled {
+				return fmt.Errorf("order item %s is already cancelled", orderItemID)
+			}
+
 			if itemVoid.Quantity > orderItem.Quantity {
 				return fmt.Errorf("void quantity cannot exceed original quantity for item %d", itemVoid.OrderItemID)
 			}
@@ -636,9 +618,15 @@ func (p *OrderProcessorImpl) VoidOrder(ctx context.Context, req *models.VoidOrde
 			return fmt.Errorf("outlet not found: %w", err)
 		}
 
+		// Reload order to get latest state
+		order, err = p.orderRepo.GetByID(ctx, req.OrderID)
+		if err != nil {
+			return fmt.Errorf("failed to reload order: %w", err)
+		}
+
 		order.Subtotal -= totalVoidedAmount
 		order.TotalCost -= totalVoidedCost
-		order.TaxAmount = order.Subtotal * outlet.TaxRate // Recalculate tax using outlet's tax rate
+		order.TaxAmount = order.Subtotal * outlet.TaxRate
 		order.TotalAmount = order.Subtotal + order.TaxAmount - order.DiscountAmount
 
 		if err := p.orderRepo.Update(ctx, order); err != nil {

internal/processor/product_outlet_price_processor.go

@@ -46,9 +46,10 @@ func (p *ProductOutletPriceProcessorImpl) Upsert(ctx context.Context, req *model
 	}
 
 	entity := &entities.ProductOutletPrice{
-		ProductID: req.ProductID,
-		OutletID:  req.OutletID,
-		Price:     req.Price,
+		ProductID:      req.ProductID,
+		OutletID:       req.OutletID,
+		Price:          req.Price,
+		PrintToChecker: req.PrintToChecker,
 	}
 
 	if err := p.repo.Upsert(ctx, entity); err != nil {

internal/processor/product_processor.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 
 	"apskel-pos-be/internal/entities"
+	"apskel-pos-be/internal/logger"
 	"apskel-pos-be/internal/mappers"
 	"apskel-pos-be/internal/models"
 	"apskel-pos-be/internal/repository"
@@ -39,6 +40,7 @@ type ProductRepository interface {
 	ExistsBySKU(ctx context.Context, organizationID uuid.UUID, sku string, excludeID *uuid.UUID) (bool, error)
 	GetByName(ctx context.Context, organizationID uuid.UUID, name string) (*entities.Product, error)
 	ExistsByName(ctx context.Context, organizationID uuid.UUID, name string, excludeID *uuid.UUID) (bool, error)
+	ExistsByNameInOutlet(ctx context.Context, organizationID uuid.UUID, outletID uuid.UUID, name string, excludeID *uuid.UUID) (bool, error)
 	UpdateActiveStatus(ctx context.Context, id uuid.UUID, isActive bool) error
 	GetLowCostProducts(ctx context.Context, organizationID uuid.UUID, maxCost float64) ([]*entities.Product, error)
 }
@@ -79,12 +81,12 @@ func (p *ProductProcessorImpl) CreateProduct(ctx context.Context, req *models.Cr
 		}
 	}
 
-	exists, err := p.productRepo.ExistsByName(ctx, req.OrganizationID, req.Name, nil)
+	exists, err := p.productRepo.ExistsByNameInOutlet(ctx, req.OrganizationID, req.OutletID, req.Name, nil)
 	if err != nil {
 		return nil, fmt.Errorf("failed to check product name uniqueness: %w", err)
 	}
 	if exists {
-		return nil, fmt.Errorf("product with name '%s' already exists for this organization", req.Name)
+		return nil, fmt.Errorf("product with name '%s' already exists for this outlet", req.Name)
 	}
 
 	productEntity := mappers.CreateProductRequestToEntity(req)
@@ -122,6 +124,23 @@ func (p *ProductProcessorImpl) CreateProduct(ctx context.Context, req *models.Cr
 		}
 	}
 
+	// Upsert outlet-specific price if outlet context is present
+	if req.OutletID != uuid.Nil {
+		printToChecker := true // default
+		if req.PrintToChecker != nil {
+			printToChecker = *req.PrintToChecker
+		}
+		outletPriceEntity := &entities.ProductOutletPrice{
+			ProductID:      productEntity.ID,
+			OutletID:       req.OutletID,
+			Price:          req.Price,
+			PrintToChecker: printToChecker,
+		}
+		if err := p.outletPriceRepo.Upsert(ctx, outletPriceEntity); err != nil {
+			return nil, fmt.Errorf("failed to assign outlet price: %w", err)
+		}
+	}
+
 	productWithCategory, err := p.productRepo.GetWithCategory(ctx, productEntity.ID)
 	if err != nil {
 		return nil, fmt.Errorf("failed to retrieve created product: %w", err)
@@ -161,12 +180,12 @@ func (p *ProductProcessorImpl) UpdateProduct(ctx context.Context, id uuid.UUID,
 	}
 
 	if req.Name != nil && *req.Name != existingProduct.Name {
-		exists, err := p.productRepo.ExistsByName(ctx, existingProduct.OrganizationID, *req.Name, &id)
+		exists, err := p.productRepo.ExistsByNameInOutlet(ctx, existingProduct.OrganizationID, req.OutletID, *req.Name, &id)
 		if err != nil {
 			return nil, fmt.Errorf("failed to check product name uniqueness: %w", err)
 		}
 		if exists {
-			return nil, fmt.Errorf("product with name '%s' already exists for this organization", *req.Name)
+			return nil, fmt.Errorf("product with name '%s' already exists for this outlet", *req.Name)
 		}
 	}
 
@@ -183,6 +202,41 @@ func (p *ProductProcessorImpl) UpdateProduct(ctx context.Context, id uuid.UUID,
 		}
 	}
 
+	// Upsert outlet-specific price if outlet context is present and price or print_to_checker is provided
+	if req.OutletID != uuid.Nil && (req.Price != nil || req.PrintToChecker != nil) {
+		// Fetch existing outlet price to use as fallback for fields not provided
+		existing, _ := p.outletPriceRepo.GetByProductAndOutlet(ctx, id, req.OutletID)
+
+		price := float64(0)
+		if existing != nil {
+			price = existing.Price
+		}
+		if req.Price != nil {
+			price = *req.Price
+		}
+
+		printToChecker := true // default
+		if existing != nil {
+			printToChecker = existing.PrintToChecker
+		}
+		if req.PrintToChecker != nil {
+			printToChecker = *req.PrintToChecker
+		}
+
+		outletPriceEntity := &entities.ProductOutletPrice{
+			ProductID:      id,
+			OutletID:       req.OutletID,
+			Price:          price,
+			PrintToChecker: printToChecker,
+		}
+		logger.FromContext(ctx).Infof("ProductProcessor::UpdateProduct -> upserting outlet price: productID=%s outletID=%s price=%f printToChecker=%v", id, req.OutletID, price, printToChecker)
+		if err := p.outletPriceRepo.Upsert(ctx, outletPriceEntity); err != nil {
+			return nil, fmt.Errorf("failed to assign outlet price: %w", err)
+		}
+	} else {
+		logger.FromContext(ctx).Infof("ProductProcessor::UpdateProduct -> skipping outlet price upsert: outletID=%s price=%v printToChecker=%v", req.OutletID, req.Price, req.PrintToChecker)
+	}
+
 	productWithCategory, err := p.productRepo.GetWithCategory(ctx, id)
 	if err != nil {
 		return nil, fmt.Errorf("failed to retrieve updated product: %w", err)
@@ -231,6 +285,7 @@ func (p *ProductProcessorImpl) GetProductByID(ctx context.Context, id uuid.UUID,
 		outletPrice, err := p.outletPriceRepo.GetByProductAndOutlet(ctx, id, outletID)
 		if err == nil {
 			response.OutletPrice = &outletPrice.Price
+			response.PrintToChecker = outletPrice.PrintToChecker
 		}
 	} else {
 		// No outlet context — return all outlet prices for this product
@@ -239,9 +294,10 @@ func (p *ProductProcessorImpl) GetProductByID(ctx context.Context, id uuid.UUID,
 			prices := make([]models.OutletPrice, len(outletPrices))
 			for i, op := range outletPrices {
 				prices[i] = models.OutletPrice{
-					OutletID:   op.OutletID,
-					OutletName: op.Outlet.Name,
-					Price:      op.Price,
+					OutletID:       op.OutletID,
+					OutletName:     op.Outlet.Name,
+					Price:          op.Price,
+					PrintToChecker: op.PrintToChecker,
 				}
 			}
 			response.OutletPrices = prices
@@ -278,10 +334,35 @@ func (p *ProductProcessorImpl) ListProducts(ctx context.Context, filters map[str
 	}
 
 	responses := make([]models.ProductResponse, len(productEntities))
-	for i, entity := range productEntities {
-		response := mappers.ProductEntityToResponse(entity)
-		if response != nil {
-			responses[i] = *response
+	if outletID != uuid.Nil && len(productEntities) > 0 {
+		// Bulk-fetch outlet prices to populate OutletPrice and PrintToChecker per product
+		productIDs := make([]uuid.UUID, len(productEntities))
+		for i, e := range productEntities {
+			productIDs[i] = e.ID
+		}
+		outletPrices, opErr := p.outletPriceRepo.GetByProductsAndOutlet(ctx, productIDs, outletID)
+		priceMap := make(map[uuid.UUID]*entities.ProductOutletPrice)
+		if opErr == nil {
+			for _, op := range outletPrices {
+				priceMap[op.ProductID] = op
+			}
+		}
+		for i, entity := range productEntities {
+			response := mappers.ProductEntityToResponse(entity)
+			if response != nil {
+				if op, ok := priceMap[entity.ID]; ok {
+					response.OutletPrice = &op.Price
+					response.PrintToChecker = op.PrintToChecker
+				}
+				responses[i] = *response
+			}
+		}
+	} else {
+		for i, entity := range productEntities {
+			response := mappers.ProductEntityToResponse(entity)
+			if response != nil {
+				responses[i] = *response
+			}
 		}
 	}
 

internal/processor/product_recipe_processor.go

@@ -235,7 +235,7 @@ func (p *ProductRecipeProcessorImpl) entityToResponse(entity *entities.ProductRe
 			CreatedAt:      entity.Ingredient.CreatedAt,
 			UpdatedAt:      entity.Ingredient.UpdatedAt,
 		}
-		
+
 		// Add unit if available
 		if entity.Ingredient.Unit != nil {
 			symbol := ""
@@ -253,4 +253,4 @@ func (p *ProductRecipeProcessorImpl) entityToResponse(entity *entities.ProductRe
 	}
 
 	return response
-}
+}

internal/processor/purchase_category_processor.go

@@ -0,0 +1,210 @@
+package processor
+
+import (
+	"context"
+	"fmt"
+	"strings"
+	"unicode"
+
+	"apskel-pos-be/internal/entities"
+	"apskel-pos-be/internal/mappers"
+	"apskel-pos-be/internal/models"
+
+	"github.com/google/uuid"
+)
+
+type PurchaseCategoryProcessor interface {
+	CreatePurchaseCategory(ctx context.Context, req *models.CreatePurchaseCategoryRequest) (*models.PurchaseCategoryResponse, error)
+	UpdatePurchaseCategory(ctx context.Context, id, organizationID uuid.UUID, req *models.UpdatePurchaseCategoryRequest) (*models.PurchaseCategoryResponse, error)
+	DeletePurchaseCategory(ctx context.Context, id, organizationID uuid.UUID) error
+	GetPurchaseCategoryByID(ctx context.Context, id, organizationID uuid.UUID) (*models.PurchaseCategoryResponse, error)
+	ListPurchaseCategories(ctx context.Context, req *models.ListPurchaseCategoriesRequest) ([]models.PurchaseCategoryResponse, int, error)
+}
+
+type PurchaseCategoryRepository interface {
+	Create(ctx context.Context, category *entities.PurchaseCategory) error
+	GetByIDAndOrganizationID(ctx context.Context, id, organizationID uuid.UUID) (*entities.PurchaseCategory, error)
+	Update(ctx context.Context, category *entities.PurchaseCategory) error
+	SoftDelete(ctx context.Context, id, organizationID uuid.UUID) error
+	List(ctx context.Context, organizationID uuid.UUID, filters map[string]interface{}, limit, offset int) ([]*entities.PurchaseCategory, int64, error)
+	ExistsByCode(ctx context.Context, organizationID uuid.UUID, code string, excludeID *uuid.UUID) (bool, error)
+}
+
+type PurchaseCategoryProcessorImpl struct {
+	purchaseCategoryRepo PurchaseCategoryRepository
+}
+
+func NewPurchaseCategoryProcessorImpl(purchaseCategoryRepo PurchaseCategoryRepository) *PurchaseCategoryProcessorImpl {
+	return &PurchaseCategoryProcessorImpl{purchaseCategoryRepo: purchaseCategoryRepo}
+}
+
+func (p *PurchaseCategoryProcessorImpl) CreatePurchaseCategory(ctx context.Context, req *models.CreatePurchaseCategoryRequest) (*models.PurchaseCategoryResponse, error) {
+	code := ""
+	if req.Code != nil && strings.TrimSpace(*req.Code) != "" {
+		code = normalizePurchaseCategoryCode(*req.Code)
+	} else {
+		code = normalizePurchaseCategoryCode(req.Name)
+	}
+
+	if code == "" {
+		return nil, fmt.Errorf("purchase category code cannot be empty")
+	}
+
+	exists, err := p.purchaseCategoryRepo.ExistsByCode(ctx, req.OrganizationID, code, nil)
+	if err != nil {
+		return nil, fmt.Errorf("failed to check purchase category code uniqueness: %w", err)
+	}
+	if exists {
+		return nil, fmt.Errorf("purchase category with code '%s' already exists", code)
+	}
+
+	if req.ParentID != nil {
+		parent, err := p.purchaseCategoryRepo.GetByIDAndOrganizationID(ctx, *req.ParentID, req.OrganizationID)
+		if err != nil {
+			return nil, fmt.Errorf("parent purchase category not found: %w", err)
+		}
+		if string(parent.Type) != req.Type {
+			return nil, fmt.Errorf("parent purchase category type must match child type")
+		}
+	}
+
+	category := mappers.CreatePurchaseCategoryRequestToEntity(req)
+	category.Code = code
+
+	if err := p.purchaseCategoryRepo.Create(ctx, category); err != nil {
+		return nil, fmt.Errorf("failed to create purchase category: %w", err)
+	}
+
+	return mappers.PurchaseCategoryEntityToResponse(category), nil
+}
+
+func (p *PurchaseCategoryProcessorImpl) UpdatePurchaseCategory(ctx context.Context, id, organizationID uuid.UUID, req *models.UpdatePurchaseCategoryRequest) (*models.PurchaseCategoryResponse, error) {
+	category, err := p.purchaseCategoryRepo.GetByIDAndOrganizationID(ctx, id, organizationID)
+	if err != nil {
+		return nil, fmt.Errorf("purchase category not found: %w", err)
+	}
+
+	newType := string(category.Type)
+	if req.Type != nil {
+		newType = *req.Type
+	}
+
+	if req.ParentID != nil {
+		if *req.ParentID == id {
+			return nil, fmt.Errorf("purchase category cannot be its own parent")
+		}
+
+		parent, err := p.purchaseCategoryRepo.GetByIDAndOrganizationID(ctx, *req.ParentID, organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("parent purchase category not found: %w", err)
+		}
+		if string(parent.Type) != newType {
+			return nil, fmt.Errorf("parent purchase category type must match child type")
+		}
+		category.ParentID = req.ParentID
+	}
+
+	if req.Code != nil {
+		code := normalizePurchaseCategoryCode(*req.Code)
+		if code == "" {
+			return nil, fmt.Errorf("purchase category code cannot be empty")
+		}
+
+		if code != category.Code {
+			exists, err := p.purchaseCategoryRepo.ExistsByCode(ctx, organizationID, code, &id)
+			if err != nil {
+				return nil, fmt.Errorf("failed to check purchase category code uniqueness: %w", err)
+			}
+			if exists {
+				return nil, fmt.Errorf("purchase category with code '%s' already exists", code)
+			}
+			category.Code = code
+		}
+	}
+
+	if req.Name != nil {
+		category.Name = strings.TrimSpace(*req.Name)
+	}
+	if req.Type != nil {
+		category.Type = entities.PurchaseCategoryType(*req.Type)
+	}
+	if req.SortOrder != nil {
+		category.SortOrder = *req.SortOrder
+	}
+	if req.IsActive != nil {
+		category.IsActive = *req.IsActive
+	}
+
+	if err := p.purchaseCategoryRepo.Update(ctx, category); err != nil {
+		return nil, fmt.Errorf("failed to update purchase category: %w", err)
+	}
+
+	return mappers.PurchaseCategoryEntityToResponse(category), nil
+}
+
+func (p *PurchaseCategoryProcessorImpl) DeletePurchaseCategory(ctx context.Context, id, organizationID uuid.UUID) error {
+	_, err := p.purchaseCategoryRepo.GetByIDAndOrganizationID(ctx, id, organizationID)
+	if err != nil {
+		return fmt.Errorf("purchase category not found: %w", err)
+	}
+
+	if err := p.purchaseCategoryRepo.SoftDelete(ctx, id, organizationID); err != nil {
+		return fmt.Errorf("failed to delete purchase category: %w", err)
+	}
+
+	return nil
+}
+
+func (p *PurchaseCategoryProcessorImpl) GetPurchaseCategoryByID(ctx context.Context, id, organizationID uuid.UUID) (*models.PurchaseCategoryResponse, error) {
+	category, err := p.purchaseCategoryRepo.GetByIDAndOrganizationID(ctx, id, organizationID)
+	if err != nil {
+		return nil, fmt.Errorf("purchase category not found: %w", err)
+	}
+
+	return mappers.PurchaseCategoryEntityToResponse(category), nil
+}
+
+func (p *PurchaseCategoryProcessorImpl) ListPurchaseCategories(ctx context.Context, req *models.ListPurchaseCategoriesRequest) ([]models.PurchaseCategoryResponse, int, error) {
+	filters := make(map[string]interface{})
+	if req.ParentID != nil {
+		filters["parent_id"] = *req.ParentID
+	}
+	if req.Type != "" {
+		filters["type"] = req.Type
+	}
+	if req.Search != "" {
+		filters["search"] = req.Search
+	}
+	if req.IsActive != nil {
+		filters["is_active"] = *req.IsActive
+	}
+
+	offset := (req.Page - 1) * req.Limit
+	categories, total, err := p.purchaseCategoryRepo.List(ctx, req.OrganizationID, filters, req.Limit, offset)
+	if err != nil {
+		return nil, 0, fmt.Errorf("failed to list purchase categories: %w", err)
+	}
+
+	return mappers.PurchaseCategoryEntitiesToResponses(categories), int(total), nil
+}
+
+func normalizePurchaseCategoryCode(value string) string {
+	value = strings.TrimSpace(strings.ToLower(value))
+	var builder strings.Builder
+	lastUnderscore := false
+
+	for _, r := range value {
+		if unicode.IsLetter(r) || unicode.IsDigit(r) {
+			builder.WriteRune(r)
+			lastUnderscore = false
+			continue
+		}
+
+		if !lastUnderscore {
+			builder.WriteRune('_')
+			lastUnderscore = true
+		}
+	}
+
+	return strings.Trim(builder.String(), "_")
+}

internal/processor/purchase_order_processor.go

@@ -25,6 +25,7 @@ type PurchaseOrderProcessorImpl struct {
 	purchaseOrderRepo        PurchaseOrderRepository
 	vendorRepo               VendorRepository
 	ingredientRepo           IngredientRepository
+	purchaseCategoryRepo     PurchaseCategoryRepository
 	unitRepo                 UnitRepository
 	fileRepo                 FileRepository
 	inventoryMovementService InventoryMovementService
@@ -35,6 +36,7 @@ func NewPurchaseOrderProcessorImpl(
 	purchaseOrderRepo PurchaseOrderRepository,
 	vendorRepo VendorRepository,
 	ingredientRepo IngredientRepository,
+	purchaseCategoryRepo PurchaseCategoryRepository,
 	unitRepo UnitRepository,
 	fileRepo FileRepository,
 	inventoryMovementService InventoryMovementService,
@@ -44,6 +46,7 @@ func NewPurchaseOrderProcessorImpl(
 		purchaseOrderRepo:        purchaseOrderRepo,
 		vendorRepo:               vendorRepo,
 		ingredientRepo:           ingredientRepo,
+		purchaseCategoryRepo:     purchaseCategoryRepo,
 		unitRepo:                 unitRepo,
 		fileRepo:                 fileRepo,
 		inventoryMovementService: inventoryMovementService,
@@ -64,23 +67,47 @@ func (p *PurchaseOrderProcessorImpl) CreatePurchaseOrder(ctx context.Context, or
 		return nil, fmt.Errorf("purchase order with PO number %s already exists in this organization", req.PONumber)
 	}
 
-	// Validate ingredients and units exist
+	// Validate categories and inventory fields per item type.
 	for i, item := range req.Items {
-		_, err := p.ingredientRepo.GetByID(ctx, item.IngredientID, organizationID)
+		category, err := p.validatePurchaseCategory(ctx, item.PurchaseCategoryID, organizationID, i)
 		if err != nil {
-			return nil, fmt.Errorf("ingredient not found for item %d: %w", i, err)
+			return nil, err
 		}
 
-		_, err = p.unitRepo.GetByID(ctx, item.UnitID, organizationID)
-		if err != nil {
-			return nil, fmt.Errorf("unit not found for item %d: %w", i, err)
+		switch category.Type {
+		case entities.PurchaseCategoryTypeRawMaterial:
+			if item.IngredientID == nil {
+				return nil, fmt.Errorf("ingredient_id is required for raw_material item %d", i)
+			}
+			if item.Quantity == nil {
+				return nil, fmt.Errorf("quantity is required for raw_material item %d", i)
+			}
+			if item.UnitID == nil {
+				return nil, fmt.Errorf("unit_id is required for raw_material item %d", i)
+			}
+
+			_, err := p.ingredientRepo.GetByID(ctx, *item.IngredientID, organizationID)
+			if err != nil {
+				return nil, fmt.Errorf("ingredient not found for item %d: %w", i, err)
+			}
+
+			_, err = p.unitRepo.GetByID(ctx, *item.UnitID, organizationID)
+			if err != nil {
+				return nil, fmt.Errorf("unit not found for item %d: %w", i, err)
+			}
+		case entities.PurchaseCategoryTypeExpense:
+			if item.IngredientID != nil || item.Quantity != nil || item.UnitID != nil {
+				return nil, fmt.Errorf("ingredient_id, quantity, and unit_id must be empty for expense item %d", i)
+			}
+		default:
+			return nil, fmt.Errorf("purchase category for item %d has unsupported type %s", i, category.Type)
 		}
 	}
 
 	// Calculate total amount
 	totalAmount := 0.0
 	for _, item := range req.Items {
-		totalAmount += item.Amount
+		totalAmount += calculatePurchaseOrderItemTotal(item.Quantity, item.Amount)
 	}
 
 	// Create purchase order entity
@@ -109,12 +136,13 @@ func (p *PurchaseOrderProcessorImpl) CreatePurchaseOrder(ctx context.Context, or
 	// Create purchase order items
 	for _, itemReq := range req.Items {
 		itemEntity := &entities.PurchaseOrderItem{
-			PurchaseOrderID: poEntity.ID,
-			IngredientID:    itemReq.IngredientID,
-			Description:     itemReq.Description,
-			Quantity:        itemReq.Quantity,
-			UnitID:          itemReq.UnitID,
-			Amount:          itemReq.Amount,
+			PurchaseOrderID:    poEntity.ID,
+			IngredientID:       itemReq.IngredientID,
+			PurchaseCategoryID: itemReq.PurchaseCategoryID,
+			Description:        itemReq.Description,
+			Quantity:           itemReq.Quantity,
+			UnitID:             itemReq.UnitID,
+			Amount:             itemReq.Amount,
 		}
 
 		err = p.purchaseOrderRepo.CreateItem(ctx, itemEntity)
@@ -175,7 +203,7 @@ func (p *PurchaseOrderProcessorImpl) UpdatePurchaseOrder(ctx context.Context, id
 		poEntity.TransactionDate = *req.TransactionDate
 	}
 	if req.DueDate != nil {
-		poEntity.DueDate = *req.DueDate
+		poEntity.DueDate = req.DueDate
 	}
 	if req.Reference != nil {
 		poEntity.Reference = req.Reference
@@ -189,68 +217,80 @@ func (p *PurchaseOrderProcessorImpl) UpdatePurchaseOrder(ctx context.Context, id
 
 	// Update items if provided
 	if req.Items != nil {
-		// Delete existing items
+		totalAmount := 0.0
+		items := make([]*entities.PurchaseOrderItem, len(req.Items))
+		for i, itemReq := range req.Items {
+			if itemReq.PurchaseCategoryID == nil {
+				return nil, fmt.Errorf("purchase_category_id is required for item %d", i)
+			}
+
+			ingredientID := itemReq.IngredientID
+			purchaseCategoryID := *itemReq.PurchaseCategoryID
+			unitID := itemReq.UnitID
+			quantity := itemReq.Quantity
+			amount := 0.0
+			if itemReq.Amount != nil {
+				amount = *itemReq.Amount
+			}
+			description := itemReq.Description
+
+			category, err := p.validatePurchaseCategory(ctx, purchaseCategoryID, organizationID, i)
+			if err != nil {
+				return nil, err
+			}
+
+			switch category.Type {
+			case entities.PurchaseCategoryTypeRawMaterial:
+				if ingredientID == nil {
+					return nil, fmt.Errorf("ingredient_id is required for raw_material item %d", i)
+				}
+				if quantity == nil {
+					return nil, fmt.Errorf("quantity is required for raw_material item %d", i)
+				}
+				if unitID == nil {
+					return nil, fmt.Errorf("unit_id is required for raw_material item %d", i)
+				}
+
+				_, err := p.ingredientRepo.GetByID(ctx, *ingredientID, organizationID)
+				if err != nil {
+					return nil, fmt.Errorf("ingredient not found: %w", err)
+				}
+
+				_, err = p.unitRepo.GetByID(ctx, *unitID, organizationID)
+				if err != nil {
+					return nil, fmt.Errorf("unit not found: %w", err)
+				}
+			case entities.PurchaseCategoryTypeExpense:
+				if ingredientID != nil || quantity != nil || unitID != nil {
+					return nil, fmt.Errorf("ingredient_id, quantity, and unit_id must be empty for expense item %d", i)
+				}
+			default:
+				return nil, fmt.Errorf("purchase category for item %d has unsupported type %s", i, category.Type)
+			}
+
+			items[i] = &entities.PurchaseOrderItem{
+				PurchaseOrderID:    poEntity.ID,
+				IngredientID:       ingredientID,
+				PurchaseCategoryID: purchaseCategoryID,
+				Description:        description,
+				Quantity:           quantity,
+				UnitID:             unitID,
+				Amount:             amount,
+			}
+			totalAmount += calculatePurchaseOrderItemTotal(quantity, amount)
+		}
+
+		// Delete and recreate only after all replacement items are valid.
 		err = p.purchaseOrderRepo.DeleteItemsByPurchaseOrderID(ctx, poEntity.ID)
 		if err != nil {
 			return nil, fmt.Errorf("failed to delete existing items: %w", err)
 		}
 
-		// Create new items
-		totalAmount := 0.0
-		for _, itemReq := range req.Items {
-			// Validate ingredients and units exist
-			if itemReq.IngredientID != nil {
-				_, err := p.ingredientRepo.GetByID(ctx, *itemReq.IngredientID, organizationID)
-				if err != nil {
-					return nil, fmt.Errorf("ingredient not found: %w", err)
-				}
-			}
-
-			if itemReq.UnitID != nil {
-				_, err := p.unitRepo.GetByID(ctx, *itemReq.UnitID, organizationID)
-				if err != nil {
-					return nil, fmt.Errorf("unit not found: %w", err)
-				}
-			}
-
-			// Use existing values if not provided
-			ingredientID := poEntity.Items[0].IngredientID // This is a simplified approach
-			unitID := poEntity.Items[0].UnitID
-			quantity := poEntity.Items[0].Quantity
-			amount := poEntity.Items[0].Amount
-			description := poEntity.Items[0].Description
-
-			if itemReq.IngredientID != nil {
-				ingredientID = *itemReq.IngredientID
-			}
-			if itemReq.UnitID != nil {
-				unitID = *itemReq.UnitID
-			}
-			if itemReq.Quantity != nil {
-				quantity = *itemReq.Quantity
-			}
-			if itemReq.Amount != nil {
-				amount = *itemReq.Amount
-			}
-			if itemReq.Description != nil {
-				description = itemReq.Description
-			}
-
-			itemEntity := &entities.PurchaseOrderItem{
-				PurchaseOrderID: poEntity.ID,
-				IngredientID:    ingredientID,
-				Description:     description,
-				Quantity:        quantity,
-				UnitID:          unitID,
-				Amount:          amount,
-			}
-
+		for _, itemEntity := range items {
 			err = p.purchaseOrderRepo.CreateItem(ctx, itemEntity)
 			if err != nil {
 				return nil, fmt.Errorf("failed to create purchase order item: %w", err)
 			}
-
-			totalAmount += amount
 		}
 
 		poEntity.TotalAmount = totalAmount
@@ -379,19 +419,27 @@ func (p *PurchaseOrderProcessorImpl) UpdatePurchaseOrderStatus(ctx context.Conte
 
 		// Update inventory for each item
 		for _, item := range poWithItems.Items {
+			if item.PurchaseCategory != nil && item.PurchaseCategory.Type == entities.PurchaseCategoryTypeExpense {
+				continue
+			}
+
+			if item.IngredientID == nil || item.UnitID == nil || item.Quantity == nil {
+				return nil, fmt.Errorf("purchase order item %s is missing raw material inventory fields", item.ID)
+			}
+
 			// Get ingredient to find its base unit
-			ingredient, err := p.ingredientRepo.GetByID(ctx, item.IngredientID, organizationID)
+			ingredient, err := p.ingredientRepo.GetByID(ctx, *item.IngredientID, organizationID)
 			if err != nil {
-				return nil, fmt.Errorf("failed to get ingredient %s: %w", item.IngredientID, err)
+				return nil, fmt.Errorf("failed to get ingredient %s: %w", *item.IngredientID, err)
 			}
 
 			// Convert quantity to ingredient's base unit if needed
-			quantityToAdd := item.Quantity
-			if item.UnitID != ingredient.UnitID {
+			quantityToAdd := *item.Quantity
+			if *item.UnitID != ingredient.UnitID {
 				// Convert from purchase unit to ingredient's base unit
-				convertedQuantity, err := p.unitConverterRepo.ConvertQuantity(ctx, item.IngredientID, item.UnitID, ingredient.UnitID, organizationID, item.Quantity)
+				convertedQuantity, err := p.unitConverterRepo.ConvertQuantity(ctx, *item.IngredientID, *item.UnitID, ingredient.UnitID, organizationID, *item.Quantity)
 				if err != nil {
-					return nil, fmt.Errorf("failed to convert quantity for ingredient %s from unit %s to %s: %w", item.IngredientID, item.UnitID, ingredient.UnitID, err)
+					return nil, fmt.Errorf("failed to convert quantity for ingredient %s from unit %s to %s: %w", *item.IngredientID, *item.UnitID, ingredient.UnitID, err)
 				}
 				quantityToAdd = convertedQuantity
 			}
@@ -399,7 +447,7 @@ func (p *PurchaseOrderProcessorImpl) UpdatePurchaseOrderStatus(ctx context.Conte
 			// Calculate unit cost in ingredient's base unit
 			unitCost := 0.0
 			if quantityToAdd > 0 {
-				unitCost = item.Amount / quantityToAdd
+				unitCost = calculatePurchaseOrderItemTotal(item.Quantity, item.Amount) / quantityToAdd
 			}
 
 			// Create inventory movement for ingredient purchase
@@ -409,7 +457,7 @@ func (p *PurchaseOrderProcessorImpl) UpdatePurchaseOrderStatus(ctx context.Conte
 
 			err = p.inventoryMovementService.CreateIngredientMovement(
 				ctx,
-				item.IngredientID,
+				*item.IngredientID,
 				organizationID,
 				outletID,
 				userID,
@@ -419,9 +467,10 @@ func (p *PurchaseOrderProcessorImpl) UpdatePurchaseOrderStatus(ctx context.Conte
 				reason,
 				&referenceType,
 				referenceID,
+				&item.ID,
 			)
 			if err != nil {
-				return nil, fmt.Errorf("failed to create inventory movement for ingredient %s: %w", item.IngredientID, err)
+				return nil, fmt.Errorf("failed to create inventory movement for ingredient %s: %w", *item.IngredientID, err)
 			}
 		}
 	}
@@ -440,3 +489,28 @@ func (p *PurchaseOrderProcessorImpl) UpdatePurchaseOrderStatus(ctx context.Conte
 
 	return mappers.PurchaseOrderEntityToResponse(updatedPO), nil
 }
+
+func (p *PurchaseOrderProcessorImpl) validatePurchaseCategory(ctx context.Context, categoryID, organizationID uuid.UUID, itemIndex int) (*entities.PurchaseCategory, error) {
+	category, err := p.purchaseCategoryRepo.GetByIDAndOrganizationID(ctx, categoryID, organizationID)
+	if err != nil {
+		return nil, fmt.Errorf("purchase category not found for item %d: %w", itemIndex, err)
+	}
+
+	if !category.IsActive {
+		return nil, fmt.Errorf("purchase category for item %d is inactive", itemIndex)
+	}
+
+	if category.Type != entities.PurchaseCategoryTypeRawMaterial && category.Type != entities.PurchaseCategoryTypeExpense {
+		return nil, fmt.Errorf("purchase category for item %d must be raw_material or expense", itemIndex)
+	}
+
+	return category, nil
+}
+
+func calculatePurchaseOrderItemTotal(quantity *float64, amount float64) float64 {
+	if quantity == nil {
+		return amount
+	}
+
+	return *quantity * amount
+}

internal/processor/split_bill_processor.go

@@ -22,8 +22,6 @@ const (
 	MetadataKeyLastSplitQuantities   = "last_split_quantities"
 )
 
-
-
 type SplitBillValidation struct {
 	OrderItems       map[uuid.UUID]*entities.OrderItem
 	PaidQuantities   map[uuid.UUID]int

internal/repository/analytics_repository.go

@@ -13,10 +13,13 @@ import (
 type AnalyticsRepository interface {
 	GetPaymentMethodAnalytics(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time) ([]*entities.PaymentMethodAnalytics, error)
 	GetSalesAnalytics(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time, groupBy string) ([]*entities.SalesAnalytics, error)
+	GetPurchasingAnalytics(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time, groupBy string) (*entities.PurchasingAnalytics, error)
 	GetProductAnalytics(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time, limit int) ([]*entities.ProductAnalytics, error)
 	GetProductAnalyticsPerCategory(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time) ([]*entities.ProductAnalyticsPerCategory, error)
 	GetDashboardOverview(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time) (*entities.DashboardOverview, error)
 	GetProfitLossAnalytics(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time, groupBy string) (*entities.ProfitLossAnalytics, error)
+	GetExclusiveSummaryAnalytics(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time) (*entities.ExclusiveSummaryAnalytics, error)
+	GetExclusiveSummaryBankBalances(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID) ([]entities.ExclusiveSummaryBankBalance, error)
 }
 
 type AnalyticsRepositoryImpl struct {
@@ -122,6 +125,165 @@ func (r *AnalyticsRepositoryImpl) GetSalesAnalytics(ctx context.Context, organiz
 	return results, err
 }
 
+func (r *AnalyticsRepositoryImpl) GetPurchasingAnalytics(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time, groupBy string) (*entities.PurchasingAnalytics, error) {
+	var outletName *string
+
+	if outletID != nil {
+		var outlet struct {
+			Name string
+		}
+		result := r.db.WithContext(ctx).
+			Table("outlets").
+			Select("name").
+			Where("id = ? AND organization_id = ?", *outletID, organizationID).
+			Limit(1).
+			Scan(&outlet)
+		if result.Error != nil {
+			return nil, result.Error
+		}
+		if result.RowsAffected > 0 {
+			outletName = &outlet.Name
+		}
+	}
+	return r.getPurchaseOrderPurchasingAnalytics(ctx, organizationID, outletID, outletName, dateFrom, dateTo, groupBy)
+}
+
+func (r *AnalyticsRepositoryImpl) getPurchaseOrderPurchasingAnalytics(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, outletName *string, dateFrom, dateTo time.Time, groupBy string) (*entities.PurchasingAnalytics, error) {
+	var summary entities.PurchasingSummary
+	summaryQuery := r.db.WithContext(ctx).
+		Table("purchase_orders po").
+		Select(`
+			COALESCE(SUM(poi.amount), 0) as total_purchases,
+			COUNT(DISTINCT po.id) as total_purchase_orders,
+			COALESCE(SUM(poi.quantity), 0) as total_quantity,
+			CASE
+				WHEN COUNT(DISTINCT po.id) > 0
+				THEN COALESCE(SUM(poi.amount), 0) / COUNT(DISTINCT po.id)
+				ELSE 0
+			END as average_purchase_order_value,
+			COUNT(DISTINCT i.id) as total_ingredients,
+			COUNT(DISTINCT po.vendor_id) as total_vendors
+		`).
+		Joins("LEFT JOIN purchase_order_items poi ON poi.purchase_order_id = po.id").
+		Joins("LEFT JOIN ingredients i ON poi.ingredient_id = i.id").
+		Joins("LEFT JOIN units u ON poi.unit_id = u.id").
+		Where("po.organization_id = ?", organizationID).
+		Where("po.status != ?", "cancelled").
+		Where("po.transaction_date >= ? AND po.transaction_date <= ?", dateFrom, dateTo)
+	summaryQuery = r.applyPurchaseOrderItemOutletFilter(summaryQuery, outletID)
+
+	if err := summaryQuery.Scan(&summary).Error; err != nil {
+		return nil, err
+	}
+
+	var dateFormat string
+	switch groupBy {
+	case "hour":
+		dateFormat = "DATE_TRUNC('hour', po.created_at)"
+	case "week":
+		dateFormat = "DATE_TRUNC('week', po.transaction_date::timestamp)"
+	case "month":
+		dateFormat = "DATE_TRUNC('month', po.transaction_date::timestamp)"
+	default:
+		dateFormat = "DATE_TRUNC('day', po.transaction_date::timestamp)"
+	}
+
+	var data []entities.PurchasingAnalyticsData
+	dataQuery := r.db.WithContext(ctx).
+		Table("purchase_orders po").
+		Select(`
+			`+dateFormat+` as date,
+			COALESCE(SUM(poi.amount), 0) as purchases,
+			COUNT(DISTINCT po.id) as purchase_orders,
+			COALESCE(SUM(poi.quantity), 0) as quantity,
+			COUNT(DISTINCT i.id) as ingredients,
+			COUNT(DISTINCT po.vendor_id) as vendors
+		`).
+		Joins("LEFT JOIN purchase_order_items poi ON poi.purchase_order_id = po.id").
+		Joins("LEFT JOIN ingredients i ON poi.ingredient_id = i.id").
+		Joins("LEFT JOIN units u ON poi.unit_id = u.id").
+		Where("po.organization_id = ?", organizationID).
+		Where("po.status != ?", "cancelled").
+		Where("po.transaction_date >= ? AND po.transaction_date <= ?", dateFrom, dateTo).
+		Group(dateFormat).
+		Order(dateFormat)
+	dataQuery = r.applyPurchaseOrderItemOutletFilter(dataQuery, outletID)
+
+	if err := dataQuery.Scan(&data).Error; err != nil {
+		return nil, err
+	}
+
+	var ingredientData []entities.PurchasingIngredientData
+	ingredientQuery := r.db.WithContext(ctx).
+		Table("purchase_order_items poi").
+		Select(`
+			i.id as ingredient_id,
+			i.name as ingredient_name,
+			COALESCE(SUM(poi.quantity), 0) as quantity,
+			COALESCE(SUM(poi.amount), 0) as total_cost,
+			CASE
+				WHEN SUM(poi.quantity) > 0
+				THEN COALESCE(SUM(poi.amount), 0) / SUM(poi.quantity)
+				ELSE 0
+			END as average_unit_cost,
+			COUNT(DISTINCT po.id) as purchase_order_count
+		`).
+		Joins("JOIN purchase_orders po ON poi.purchase_order_id = po.id").
+		Joins("JOIN ingredients i ON poi.ingredient_id = i.id").
+		Joins("LEFT JOIN units u ON poi.unit_id = u.id").
+		Where("po.organization_id = ?", organizationID).
+		Where("po.status != ?", "cancelled").
+		Where("po.transaction_date >= ? AND po.transaction_date <= ?", dateFrom, dateTo).
+		Group("i.id, i.name").
+		Order("total_cost DESC")
+	ingredientQuery = r.applyPurchaseOrderItemOutletFilter(ingredientQuery, outletID)
+
+	if err := ingredientQuery.Scan(&ingredientData).Error; err != nil {
+		return nil, err
+	}
+
+	var vendorData []entities.PurchasingVendorData
+	vendorQuery := r.db.WithContext(ctx).
+		Table("purchase_orders po").
+		Select(`
+			v.id as vendor_id,
+			v.name as vendor_name,
+			COALESCE(SUM(poi.amount), 0) as total_cost,
+			COUNT(DISTINCT po.id) as purchase_order_count,
+			COUNT(DISTINCT i.id) as ingredient_count,
+			COALESCE(SUM(poi.quantity), 0) as quantity
+		`).
+		Joins("JOIN vendors v ON po.vendor_id = v.id").
+		Joins("LEFT JOIN purchase_order_items poi ON poi.purchase_order_id = po.id").
+		Joins("LEFT JOIN ingredients i ON poi.ingredient_id = i.id").
+		Joins("LEFT JOIN units u ON poi.unit_id = u.id").
+		Where("po.organization_id = ?", organizationID).
+		Where("po.status != ?", "cancelled").
+		Where("po.transaction_date >= ? AND po.transaction_date <= ?", dateFrom, dateTo).
+		Group("v.id, v.name").
+		Order("total_cost DESC")
+	vendorQuery = r.applyPurchaseOrderItemOutletFilter(vendorQuery, outletID)
+
+	if err := vendorQuery.Scan(&vendorData).Error; err != nil {
+		return nil, err
+	}
+
+	return &entities.PurchasingAnalytics{
+		OutletName:     outletName,
+		Summary:        summary,
+		Data:           data,
+		IngredientData: ingredientData,
+		VendorData:     vendorData,
+	}, nil
+}
+
+func (r *AnalyticsRepositoryImpl) applyPurchaseOrderItemOutletFilter(query *gorm.DB, outletID *uuid.UUID) *gorm.DB {
+	if outletID == nil {
+		return query
+	}
+	return query.Where("(i.outlet_id = ? OR u.outlet_id = ?)", *outletID, *outletID)
+}
+
 func (r *AnalyticsRepositoryImpl) GetProductAnalytics(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time, limit int) ([]*entities.ProductAnalytics, error) {
 	var results []*entities.ProductAnalytics
 
@@ -279,38 +441,40 @@ func (r *AnalyticsRepositoryImpl) GetDashboardOverview(ctx context.Context, orga
 }
 
 func (r *AnalyticsRepositoryImpl) GetProfitLossAnalytics(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time, groupBy string) (*entities.ProfitLossAnalytics, error) {
-	// Summary query
-	var summary entities.ProfitLossSummary
+	mtdStart := time.Date(dateTo.Year(), dateTo.Month(), 1, 0, 0, 0, 0, dateTo.Location())
+	todayStart := time.Date(dateTo.Year(), dateTo.Month(), dateTo.Day(), 0, 0, 0, 0, dateTo.Location())
+	todayEnd := todayStart.Add(24 * time.Hour).Add(-time.Nanosecond)
 
+	var summary entities.ProfitLossSummary
 	summaryQuery := r.db.WithContext(ctx).
 		Table("orders o").
 		Select(`
 			COALESCE(SUM(o.total_amount), 0) as total_revenue,
 			COALESCE(SUM(o.total_cost), 0) as total_cost,
 			COALESCE(SUM(o.total_amount - o.total_cost), 0) as gross_profit,
-			CASE 
-				WHEN SUM(o.total_amount) > 0 
-				THEN (SUM(o.total_amount - o.total_cost) / SUM(o.total_amount)) * 100 
-				ELSE 0 
+			CASE
+				WHEN SUM(o.total_amount) > 0
+				THEN (SUM(o.total_amount - o.total_cost) / SUM(o.total_amount)) * 100
+				ELSE 0
 			END as gross_profit_margin,
 			COALESCE(SUM(o.tax_amount), 0) as total_tax,
 			COALESCE(SUM(o.discount_amount), 0) as total_discount,
 			COALESCE(SUM(o.total_amount - o.total_cost - o.discount_amount), 0) as net_profit,
-			CASE 
-				WHEN SUM(o.total_amount) > 0 
-				THEN (SUM(o.total_amount - o.total_cost - o.discount_amount) / SUM(o.total_amount)) * 100 
-				ELSE 0 
+			CASE
+				WHEN SUM(o.total_amount) > 0
+				THEN (SUM(o.total_amount - o.total_cost - o.discount_amount) / SUM(o.total_amount)) * 100
+				ELSE 0
 			END as net_profit_margin,
 			COUNT(o.id) as total_orders,
-			CASE 
-				WHEN COUNT(o.id) > 0 
-				THEN SUM(o.total_amount - o.total_cost - o.discount_amount) / COUNT(o.id) 
-				ELSE 0 
+			CASE
+				WHEN COUNT(o.id) > 0
+				THEN SUM(o.total_amount - o.total_cost - o.discount_amount) / COUNT(o.id)
+				ELSE 0
 			END as average_profit,
-			CASE 
-				WHEN SUM(o.total_cost) > 0 
-				THEN (SUM(o.total_amount - o.total_cost) / SUM(o.total_cost)) * 100 
-				ELSE 0 
+			CASE
+				WHEN SUM(o.total_cost) > 0
+				THEN (SUM(o.total_amount - o.total_cost) / SUM(o.total_cost)) * 100
+				ELSE 0
 			END as profitability_ratio
 		`).
 		Where("o.organization_id = ?", organizationID).
@@ -318,15 +482,11 @@ func (r *AnalyticsRepositoryImpl) GetProfitLossAnalytics(ctx context.Context, or
 		Where("o.payment_status = ?", entities.PaymentStatusCompleted).
 		Where("o.is_void = false AND o.is_refund = false").
 		Where("o.created_at >= ? AND o.created_at <= ?", dateFrom, dateTo)
-
 	summaryQuery = r.resolveOutletID(summaryQuery, outletID, "o.outlet_id")
-
-	err := summaryQuery.Scan(&summary).Error
-	if err != nil {
+	if err := summaryQuery.Scan(&summary).Error; err != nil {
 		return nil, err
 	}
 
-	// Time series data query
 	var timeFormat string
 	switch groupBy {
 	case "hour":
@@ -335,12 +495,11 @@ func (r *AnalyticsRepositoryImpl) GetProfitLossAnalytics(ctx context.Context, or
 		timeFormat = "DATE_TRUNC('week', o.created_at)"
 	case "month":
 		timeFormat = "DATE_TRUNC('month', o.created_at)"
-	default: // day
+	default:
 		timeFormat = "DATE_TRUNC('day', o.created_at)"
 	}
 
 	var data []entities.ProfitLossData
-
 	dataQuery := r.db.WithContext(ctx).
 		Table("orders o").
 		Select(`
@@ -348,18 +507,18 @@ func (r *AnalyticsRepositoryImpl) GetProfitLossAnalytics(ctx context.Context, or
 			COALESCE(SUM(o.total_amount), 0) as revenue,
 			COALESCE(SUM(o.total_cost), 0) as cost,
 			COALESCE(SUM(o.total_amount - o.total_cost), 0) as gross_profit,
-			CASE 
-				WHEN SUM(o.total_amount) > 0 
-				THEN (SUM(o.total_amount - o.total_cost) / SUM(o.total_amount)) * 100 
-				ELSE 0 
+			CASE
+				WHEN SUM(o.total_amount) > 0
+				THEN (SUM(o.total_amount - o.total_cost) / SUM(o.total_amount)) * 100
+				ELSE 0
 			END as gross_profit_margin,
 			COALESCE(SUM(o.tax_amount), 0) as tax,
 			COALESCE(SUM(o.discount_amount), 0) as discount,
 			COALESCE(SUM(o.total_amount - o.total_cost - o.discount_amount), 0) as net_profit,
-			CASE 
-				WHEN SUM(o.total_amount) > 0 
-				THEN (SUM(o.total_amount - o.total_cost - o.discount_amount) / SUM(o.total_amount)) * 100 
-				ELSE 0 
+			CASE
+				WHEN SUM(o.total_amount) > 0
+				THEN (SUM(o.total_amount - o.total_cost - o.discount_amount) / SUM(o.total_amount)) * 100
+				ELSE 0
 			END as net_profit_margin,
 			COUNT(o.id) as orders
 		`).
@@ -370,17 +529,12 @@ func (r *AnalyticsRepositoryImpl) GetProfitLossAnalytics(ctx context.Context, or
 		Where("o.created_at >= ? AND o.created_at <= ?", dateFrom, dateTo).
 		Group(timeFormat).
 		Order(timeFormat)
-
 	dataQuery = r.resolveOutletID(dataQuery, outletID, "o.outlet_id")
-
-	err = dataQuery.Scan(&data).Error
-	if err != nil {
+	if err := dataQuery.Scan(&data).Error; err != nil {
 		return nil, err
 	}
 
-	// Product profit data query
 	var productData []entities.ProductProfitData
-
 	productQuery := r.db.WithContext(ctx).
 		Table("order_items oi").
 		Select(`
@@ -392,10 +546,10 @@ func (r *AnalyticsRepositoryImpl) GetProfitLossAnalytics(ctx context.Context, or
 			SUM(CASE WHEN oi.is_fully_refunded = false THEN oi.total_price - COALESCE(oi.refund_amount, 0) ELSE 0 END) as revenue,
 			SUM(CASE WHEN oi.is_fully_refunded = false THEN oi.total_cost * ((oi.quantity - COALESCE(oi.refund_quantity, 0))::float / NULLIF(oi.quantity, 0)) ELSE 0 END) as cost,
 			SUM(CASE WHEN oi.is_fully_refunded = false THEN (oi.total_price - COALESCE(oi.refund_amount, 0)) - (oi.total_cost * ((oi.quantity - COALESCE(oi.refund_quantity, 0))::float / NULLIF(oi.quantity, 0))) ELSE 0 END) as gross_profit,
-			CASE 
-				WHEN SUM(CASE WHEN oi.is_fully_refunded = false THEN oi.total_price - COALESCE(oi.refund_amount, 0) ELSE 0 END) > 0 
-				THEN (SUM(CASE WHEN oi.is_fully_refunded = false THEN (oi.total_price - COALESCE(oi.refund_amount, 0)) - (oi.total_cost * ((oi.quantity - COALESCE(oi.refund_quantity, 0))::float / NULLIF(oi.quantity, 0))) ELSE 0 END) / SUM(CASE WHEN oi.is_fully_refunded = false THEN oi.total_price - COALESCE(oi.refund_amount, 0) ELSE 0 END)) * 100 
-				ELSE 0 
+			CASE
+				WHEN SUM(CASE WHEN oi.is_fully_refunded = false THEN oi.total_price - COALESCE(oi.refund_amount, 0) ELSE 0 END) > 0
+				THEN (SUM(CASE WHEN oi.is_fully_refunded = false THEN (oi.total_price - COALESCE(oi.refund_amount, 0)) - (oi.total_cost * ((oi.quantity - COALESCE(oi.refund_quantity, 0))::float / NULLIF(oi.quantity, 0))) ELSE 0 END) / SUM(CASE WHEN oi.is_fully_refunded = false THEN oi.total_price - COALESCE(oi.refund_amount, 0) ELSE 0 END)) * 100
+				ELSE 0
 			END as gross_profit_margin,
 			AVG(CASE WHEN oi.is_fully_refunded = false THEN oi.unit_price ELSE NULL END) as average_price,
 			AVG(CASE WHEN oi.is_fully_refunded = false THEN oi.unit_cost ELSE NULL END) as average_cost,
@@ -413,17 +567,335 @@ func (r *AnalyticsRepositoryImpl) GetProfitLossAnalytics(ctx context.Context, or
 		Group("p.id, p.name, c.id, c.name").
 		Order("p.name ASC").
 		Limit(1000)
-
 	productQuery = r.resolveOutletID(productQuery, outletID, "o.outlet_id")
+	if err := productQuery.Scan(&productData).Error; err != nil {
+		return nil, err
+	}
 
-	err = productQuery.Scan(&productData).Error
+	type revenueCostResult struct {
+		Revenue float64
+		Cost    float64
+	}
+
+	var todayRC revenueCostResult
+	todayQuery := r.db.WithContext(ctx).
+		Table("orders o").
+		Select(`
+			COALESCE(SUM(o.total_amount), 0) as revenue,
+			COALESCE(SUM(o.total_cost), 0) as cost
+		`).
+		Where("o.organization_id = ?", organizationID).
+		Where("o.status = ?", entities.OrderStatusCompleted).
+		Where("o.payment_status = ?", entities.PaymentStatusCompleted).
+		Where("o.is_void = false AND o.is_refund = false").
+		Where("o.created_at >= ? AND o.created_at <= ?", todayStart, todayEnd)
+	todayQuery = r.resolveOutletID(todayQuery, outletID, "o.outlet_id")
+	if err := todayQuery.Scan(&todayRC).Error; err != nil {
+		return nil, err
+	}
+
+	var mtdRC revenueCostResult
+	mtdQuery := r.db.WithContext(ctx).
+		Table("orders o").
+		Select(`
+			COALESCE(SUM(o.total_amount), 0) as revenue,
+			COALESCE(SUM(o.total_cost), 0) as cost
+		`).
+		Where("o.organization_id = ?", organizationID).
+		Where("o.status = ?", entities.OrderStatusCompleted).
+		Where("o.payment_status = ?", entities.PaymentStatusCompleted).
+		Where("o.is_void = false AND o.is_refund = false").
+		Where("o.created_at >= ? AND o.created_at <= ?", mtdStart, todayEnd)
+	mtdQuery = r.resolveOutletID(mtdQuery, outletID, "o.outlet_id")
+	if err := mtdQuery.Scan(&mtdRC).Error; err != nil {
+		return nil, err
+	}
+
+	todayExpenseByCategory, err := r.getExpenseByCategory(ctx, organizationID, outletID, todayStart, todayEnd)
+	if err != nil {
+		return nil, err
+	}
+
+	mtdExpenseByCategory, err := r.getExpenseByCategory(ctx, organizationID, outletID, mtdStart, todayEnd)
+	if err != nil {
+		return nil, err
+	}
+
+	opsItems, err := r.getOperationalExpenseItems(ctx, organizationID, outletID, mtdStart, todayEnd)
 	if err != nil {
 		return nil, err
 	}
 
 	return &entities.ProfitLossAnalytics{
-		Summary:     summary,
-		Data:        data,
-		ProductData: productData,
+		Summary:                 summary,
+		Data:                    data,
+		ProductData:             productData,
+		TodayRevenue:            todayRC.Revenue,
+		TodayCost:               todayRC.Cost,
+		MtdRevenue:              mtdRC.Revenue,
+		MtdCost:                 mtdRC.Cost,
+		TodayExpenseByCategory:  todayExpenseByCategory,
+		MtdExpenseByCategory:    mtdExpenseByCategory,
+		OperationalExpenseItems: opsItems,
 	}, nil
 }
+
+func (r *AnalyticsRepositoryImpl) getExpenseByCategory(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time) ([]entities.ExpenseCategoryTotal, error) {
+	var results []entities.ExpenseCategoryTotal
+
+	query := r.db.WithContext(ctx).
+		Table("expense_items ei").
+		Select(`COALESCE(parent_coa.name, coa.name, 'Lain-lain') as category_name, COALESCE(SUM(ei.amount), 0) as amount`).
+		Joins("JOIN expenses e ON ei.expense_id = e.id").
+		Joins("JOIN chart_of_accounts coa ON ei.chart_of_account_id = coa.id").
+		Joins("LEFT JOIN chart_of_accounts parent_coa ON coa.parent_id = parent_coa.id").
+		Where("e.organization_id = ?", organizationID).
+		Where("e.status = ?", "approved").
+		Where("e.transaction_date >= ? AND e.transaction_date <= ?", dateFrom, dateTo)
+
+	if outletID != nil {
+		query = query.Where("e.outlet_id = ?", *outletID)
+	}
+
+	err := query.
+		Group("COALESCE(parent_coa.name, coa.name, 'Lain-lain')").
+		Order("COALESCE(parent_coa.name, coa.name, 'Lain-lain')").
+		Scan(&results).Error
+
+	return results, err
+}
+
+func (r *AnalyticsRepositoryImpl) getOperationalExpenseItems(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time) ([]entities.OperationalExpenseItem, error) {
+	var results []entities.OperationalExpenseItem
+
+	query := r.db.WithContext(ctx).
+		Table("expense_items ei").
+		Select(`COALESCE(NULLIF(ei.item, ''), ei.description, coa.name) as item, COALESCE(SUM(ei.amount), 0) as amount`).
+		Joins("JOIN expenses e ON ei.expense_id = e.id").
+		Joins("JOIN chart_of_accounts coa ON ei.chart_of_account_id = coa.id").
+		Where("e.organization_id = ?", organizationID).
+		Where("e.status = ?", "approved").
+		Where("e.transaction_date >= ? AND e.transaction_date <= ?", dateFrom, dateTo)
+
+	if outletID != nil {
+		query = query.Where("e.outlet_id = ?", *outletID)
+	}
+
+	err := query.
+		Group("COALESCE(NULLIF(ei.item, ''), ei.description, coa.name)").
+		Order("amount DESC").
+		Scan(&results).Error
+
+	return results, err
+}
+
+func (r *AnalyticsRepositoryImpl) GetExclusiveSummaryAnalytics(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time) (*entities.ExclusiveSummaryAnalytics, error) {
+	type salesResult struct {
+		SalesTotal float64
+		SalesCount int64
+	}
+
+	var sales salesResult
+	salesQuery := r.db.WithContext(ctx).
+		Table("orders o").
+		Select(`
+			COALESCE(SUM(o.total_amount), 0) as sales_total,
+			COUNT(o.id) as sales_count
+		`).
+		Where("o.organization_id = ?", organizationID).
+		Where("o.status = ?", entities.OrderStatusCompleted).
+		Where("o.payment_status = ?", entities.PaymentStatusCompleted).
+		Where("o.is_void = false AND o.is_refund = false").
+		Where("o.created_at >= ? AND o.created_at <= ?", dateFrom, dateTo)
+	salesQuery = r.resolveOutletID(salesQuery, outletID, "o.outlet_id")
+	if err := salesQuery.Scan(&sales).Error; err != nil {
+		return nil, err
+	}
+
+	hppBreakdown, err := r.getExclusiveSummaryHPPBreakdown(ctx, organizationID, outletID, dateFrom, dateTo)
+	if err != nil {
+		return nil, err
+	}
+
+	operationalExpenseBreakdown, err := r.getExclusiveSummaryOperationalExpenseBreakdown(ctx, organizationID, dateFrom, dateTo)
+	if err != nil {
+		return nil, err
+	}
+
+	dailySummary, err := r.getExclusiveSummaryDailySummary(ctx, organizationID, outletID, dateFrom, dateTo)
+	if err != nil {
+		return nil, err
+	}
+
+	dailyTransactions, err := r.getExclusiveSummaryDailyTransactions(ctx, organizationID, outletID, dateFrom, dateTo)
+	if err != nil {
+		return nil, err
+	}
+
+	return &entities.ExclusiveSummaryAnalytics{
+		SalesTotal:                  sales.SalesTotal,
+		SalesCount:                  sales.SalesCount,
+		HPPBreakdown:                hppBreakdown,
+		OperationalExpenseBreakdown: operationalExpenseBreakdown,
+		DailySummary:                dailySummary,
+		DailyTransactions:           dailyTransactions,
+	}, nil
+}
+
+func (r *AnalyticsRepositoryImpl) getExclusiveSummaryHPPBreakdown(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time) ([]entities.ExclusiveSummaryCategoryTotal, error) {
+	var results []entities.ExclusiveSummaryCategoryTotal
+
+	query := r.db.WithContext(ctx).
+		Table("purchase_order_items poi").
+		Select(`
+			pc.code as category_code,
+			pc.name as category_name,
+			COALESCE(SUM(poi.amount), 0) as amount
+		`).
+		Joins("JOIN purchase_orders po ON poi.purchase_order_id = po.id").
+		Joins("JOIN purchase_categories pc ON poi.purchase_category_id = pc.id").
+		Joins("LEFT JOIN ingredients i ON poi.ingredient_id = i.id").
+		Joins("LEFT JOIN units u ON poi.unit_id = u.id").
+		Where("po.organization_id = ?", organizationID).
+		Where("pc.type = ?", entities.PurchaseCategoryTypeRawMaterial).
+		Where("po.status = ?", "received").
+		Where("po.transaction_date >= ? AND po.transaction_date <= ?", dateFrom, dateTo)
+	query = r.applyPurchaseOrderItemOutletFilter(query, outletID)
+
+	err := query.
+		Group("pc.id, pc.code, pc.name, pc.sort_order").
+		Order("pc.sort_order ASC, pc.name ASC").
+		Scan(&results).Error
+
+	return results, err
+}
+
+func (r *AnalyticsRepositoryImpl) getExclusiveSummaryOperationalExpenseBreakdown(ctx context.Context, organizationID uuid.UUID, dateFrom, dateTo time.Time) ([]entities.ExclusiveSummaryCategoryTotal, error) {
+	var results []entities.ExclusiveSummaryCategoryTotal
+
+	err := r.db.WithContext(ctx).
+		Table("purchase_order_items poi").
+		Select(`
+			pc.code as category_code,
+			pc.name as category_name,
+			COALESCE(SUM(poi.amount), 0) as amount
+		`).
+		Joins("JOIN purchase_orders po ON poi.purchase_order_id = po.id").
+		Joins("JOIN purchase_categories pc ON poi.purchase_category_id = pc.id").
+		Where("po.organization_id = ?", organizationID).
+		Where("pc.type = ?", entities.PurchaseCategoryTypeExpense).
+		Where("po.status = ?", "received").
+		Where("po.transaction_date >= ? AND po.transaction_date <= ?", dateFrom, dateTo).
+		Group("pc.id, pc.code, pc.name, pc.sort_order").
+		Order("pc.sort_order ASC, pc.name ASC").
+		Scan(&results).Error
+
+	return results, err
+}
+
+func (r *AnalyticsRepositoryImpl) getExclusiveSummaryDailySummary(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time) ([]entities.ExclusiveSummaryDailySummary, error) {
+	var results []entities.ExclusiveSummaryDailySummary
+	rawQuery, args := r.exclusiveSummaryPurchaseOrderItemQuery(organizationID, outletID, dateFrom, dateTo)
+
+	err := r.db.WithContext(ctx).Raw(`
+		SELECT date, COUNT(*) as transaction_count, COALESCE(SUM(amount), 0) as total_cost
+		FROM (`+rawQuery+`) transactions
+		GROUP BY date
+		ORDER BY date ASC
+	`, args...).Scan(&results).Error
+
+	return results, err
+}
+
+func (r *AnalyticsRepositoryImpl) getExclusiveSummaryDailyTransactions(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time) ([]entities.ExclusiveSummaryDailyTransaction, error) {
+	var results []entities.ExclusiveSummaryDailyTransaction
+	rawQuery, args := r.exclusiveSummaryPurchaseOrderItemQuery(organizationID, outletID, dateFrom, dateTo)
+
+	err := r.db.WithContext(ctx).Raw(`
+		SELECT date, category_code, category_name, description, amount, source
+		FROM (`+rawQuery+`) transactions
+		ORDER BY date ASC, category_name ASC, description ASC
+	`, args...).Scan(&results).Error
+
+	return results, err
+}
+
+func (r *AnalyticsRepositoryImpl) exclusiveSummaryPurchaseOrderItemQuery(organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time) (string, []interface{}) {
+	outletFilter := ""
+	args := []interface{}{
+		organizationID,
+		"received",
+		dateFrom,
+		dateTo,
+	}
+
+	if outletID != nil {
+		outletFilter = "AND (pc.type = ? OR i.outlet_id = ? OR u.outlet_id = ?)"
+		args = append(args, entities.PurchaseCategoryTypeExpense, *outletID, *outletID)
+	}
+
+	query := `
+		SELECT
+			DATE(po.transaction_date) as date,
+			pc.code as category_code,
+			pc.name as category_name,
+			COALESCE(NULLIF(poi.description, ''), i.name, pc.name) as description,
+			poi.amount as amount,
+			'purchase_order' as source
+		FROM purchase_order_items poi
+		JOIN purchase_orders po ON poi.purchase_order_id = po.id
+		JOIN purchase_categories pc ON poi.purchase_category_id = pc.id
+		LEFT JOIN ingredients i ON poi.ingredient_id = i.id
+		LEFT JOIN units u ON poi.unit_id = u.id
+		WHERE po.organization_id = ?
+		  AND po.status = ?
+		  AND po.transaction_date >= ? AND po.transaction_date <= ?
+		  ` + outletFilter + `
+	`
+
+	return query, args
+}
+
+func (r *AnalyticsRepositoryImpl) GetExclusiveSummaryBankBalances(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID) ([]entities.ExclusiveSummaryBankBalance, error) {
+	type accountBalance struct {
+		Name           string
+		OpeningBalance float64
+		CurrentBalance float64
+		Description    *string
+	}
+
+	var accounts []accountBalance
+	query := r.db.WithContext(ctx).
+		Table("accounts").
+		Select("name, opening_balance, current_balance, description").
+		Where("organization_id = ?", organizationID).
+		Where("account_type IN ?", []entities.AccountType{entities.AccountTypeCash, entities.AccountTypeWallet, entities.AccountTypeBank}).
+		Where("is_active = ?", true)
+
+	if outletID != nil {
+		query = query.Where("outlet_id = ? OR outlet_id IS NULL", *outletID)
+	} else {
+		query = query.Where("outlet_id IS NULL")
+	}
+
+	err := query.
+		Order("number ASC, name ASC").
+		Scan(&accounts).Error
+	if err != nil {
+		return nil, err
+	}
+
+	balances := make([]entities.ExclusiveSummaryBankBalance, len(accounts))
+	for i, account := range accounts {
+		openingBalance := account.OpeningBalance
+		closingBalance := account.CurrentBalance
+		balances[i] = entities.ExclusiveSummaryBankBalance{
+			Bank:           account.Name,
+			OpeningBalance: &openingBalance,
+			ClosingBalance: &closingBalance,
+			Notes:          account.Description,
+		}
+	}
+
+	return balances, nil
+}

internal/repository/category_repository.go

@@ -72,6 +72,9 @@ func (r *CategoryRepositoryImpl) List(ctx context.Context, filters map[string]in
 		case "search":
 			searchValue := "%" + value.(string) + "%"
 			query = query.Where("name ILIKE ? OR description ILIKE ?", searchValue, searchValue)
+		case "outlet_id":
+			// Include outlet-specific categories AND global categories (outlet_id IS NULL)
+			query = query.Where("outlet_id = ? OR outlet_id IS NULL", value)
 		default:
 			query = query.Where(key+" = ?", value)
 		}

internal/repository/expense_repository.go

@@ -0,0 +1,285 @@
+package repository
+
+import (
+	"context"
+	"strings"
+	"time"
+
+	"github.com/google/uuid"
+
+	"apskel-pos-be/internal/entities"
+
+	"gorm.io/gorm"
+)
+
+type ExpenseRepositoryImpl struct {
+	db *gorm.DB
+}
+
+func NewExpenseRepositoryImpl(db *gorm.DB) *ExpenseRepositoryImpl {
+	return &ExpenseRepositoryImpl{
+		db: db,
+	}
+}
+
+func (r *ExpenseRepositoryImpl) Create(ctx context.Context, expense *entities.Expense) error {
+	return r.db.WithContext(ctx).Create(expense).Error
+}
+
+func (r *ExpenseRepositoryImpl) GetByID(ctx context.Context, id uuid.UUID) (*entities.Expense, error) {
+	var expense entities.Expense
+	err := r.db.WithContext(ctx).
+		Preload("Items.ChartOfAccount").
+		Preload("Items.PurchaseCategory").
+		First(&expense, "id = ?", id).Error
+	if err != nil {
+		return nil, err
+	}
+	return &expense, nil
+}
+
+func (r *ExpenseRepositoryImpl) GetByIDAndOrganizationID(ctx context.Context, id, organizationID uuid.UUID) (*entities.Expense, error) {
+	var expense entities.Expense
+	err := r.db.WithContext(ctx).
+		Preload("Items.ChartOfAccount").
+		Preload("Items.PurchaseCategory").
+		Where("id = ? AND organization_id = ?", id, organizationID).
+		First(&expense).Error
+	if err != nil {
+		return nil, err
+	}
+	return &expense, nil
+}
+
+func (r *ExpenseRepositoryImpl) Update(ctx context.Context, expense *entities.Expense) error {
+	return r.db.WithContext(ctx).Save(expense).Error
+}
+
+func (r *ExpenseRepositoryImpl) Delete(ctx context.Context, id uuid.UUID) error {
+	return r.db.WithContext(ctx).Delete(&entities.Expense{}, "id = ?", id).Error
+}
+
+func (r *ExpenseRepositoryImpl) List(ctx context.Context, organizationID uuid.UUID, filters map[string]interface{}, limit, offset int) ([]*entities.Expense, int64, error) {
+	var expenses []*entities.Expense
+	var total int64
+
+	query := r.db.WithContext(ctx).Model(&entities.Expense{}).Where("organization_id = ?", organizationID)
+
+	for key, value := range filters {
+		switch key {
+		case "search":
+			if searchStr, ok := value.(string); ok && searchStr != "" {
+				searchPattern := "%" + strings.ToLower(searchStr) + "%"
+				query = query.Where(`
+					LOWER(receiver) LIKE ?
+					OR LOWER(code_number) LIKE ?
+					OR LOWER(description) LIKE ?
+					OR EXISTS (
+						SELECT 1
+						FROM expense_items ei
+						WHERE ei.expense_id = expenses.id
+						  AND LOWER(ei.item) LIKE ?
+					)
+				`, searchPattern, searchPattern, searchPattern, searchPattern)
+			}
+		case "outlet_id":
+			if outletID, ok := value.(uuid.UUID); ok {
+				query = query.Where("outlet_id = ?", outletID)
+			}
+		case "status":
+			if status, ok := value.(string); ok && status != "" {
+				query = query.Where("status = ?", status)
+			}
+		case "start_date":
+			if startDate, ok := value.(time.Time); ok {
+				query = query.Where("transaction_date >= ?", startDate)
+			}
+		case "end_date":
+			if endDate, ok := value.(time.Time); ok {
+				query = query.Where("transaction_date <= ?", endDate)
+			}
+		default:
+			query = query.Where(key+" = ?", value)
+		}
+	}
+
+	if err := query.Count(&total).Error; err != nil {
+		return nil, 0, err
+	}
+
+	err := query.
+		Preload("Items.ChartOfAccount").
+		Preload("Items.PurchaseCategory").
+		Order("created_at DESC").
+		Limit(limit).
+		Offset(offset).
+		Find(&expenses).Error
+	return expenses, total, err
+}
+
+func (r *ExpenseRepositoryImpl) GetAnalytics(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time, groupBy string) (*entities.ExpenseAnalytics, error) {
+	var summary entities.ExpenseAnalyticsSummary
+
+	summaryQuery := r.db.WithContext(ctx).
+		Table("expenses e").
+		Select(`
+			COALESCE(SUM(e.total), 0) as total_expenses,
+			COUNT(e.id) as total_expense_count,
+			COALESCE(SUM(e.tax), 0) as total_tax,
+			COALESCE(AVG(e.total), 0) as average_expense_value
+		`).
+		Where("e.organization_id = ?", organizationID).
+		Where("e.status = ?", "approved").
+		Where("e.transaction_date >= ? AND e.transaction_date <= ?", dateFrom, dateTo)
+	if outletID != nil {
+		summaryQuery = summaryQuery.Where("e.outlet_id = ?", *outletID)
+	}
+	if err := summaryQuery.Scan(&summary).Error; err != nil {
+		return nil, err
+	}
+
+	countsQuery := r.db.WithContext(ctx).
+		Table("expense_items ei").
+		Select(`
+			COUNT(ei.id) as total_items,
+			COUNT(DISTINCT ei.purchase_category_id) as total_categories
+		`).
+		Joins("JOIN expenses e ON ei.expense_id = e.id").
+		Where("e.organization_id = ?", organizationID).
+		Where("e.status = ?", "approved").
+		Where("e.transaction_date >= ? AND e.transaction_date <= ?", dateFrom, dateTo)
+	if outletID != nil {
+		countsQuery = countsQuery.Where("e.outlet_id = ?", *outletID)
+	}
+	if err := countsQuery.Scan(&summary).Error; err != nil {
+		return nil, err
+	}
+
+	dateFormat := "DATE_TRUNC('day', e.transaction_date)"
+	switch groupBy {
+	case "hour":
+		dateFormat = "DATE_TRUNC('hour', e.transaction_date)"
+	case "week":
+		dateFormat = "DATE_TRUNC('week', e.transaction_date)"
+	case "month":
+		dateFormat = "DATE_TRUNC('month', e.transaction_date)"
+	}
+
+	var data []entities.ExpenseAnalyticsData
+	dataQuery := r.db.WithContext(ctx).
+		Table("expenses e").
+		Select(`
+			`+dateFormat+` as date,
+			COALESCE(SUM(e.total), 0) as expenses,
+			COUNT(e.id) as expense_count,
+			COALESCE(SUM(e.tax), 0) as tax,
+			COALESCE(SUM(item_counts.items), 0) as items,
+			COALESCE(SUM(item_counts.categories), 0) as categories
+		`).
+		Joins(`LEFT JOIN (
+			SELECT expense_id, COUNT(id) as items, COUNT(DISTINCT purchase_category_id) as categories
+			FROM expense_items
+			GROUP BY expense_id
+		) item_counts ON item_counts.expense_id = e.id`).
+		Where("e.organization_id = ?", organizationID).
+		Where("e.status = ?", "approved").
+		Where("e.transaction_date >= ? AND e.transaction_date <= ?", dateFrom, dateTo).
+		Group(dateFormat).
+		Order(dateFormat)
+	if outletID != nil {
+		dataQuery = dataQuery.Where("e.outlet_id = ?", *outletID)
+	}
+	if err := dataQuery.Scan(&data).Error; err != nil {
+		return nil, err
+	}
+
+	var categoryData []entities.ExpenseAnalyticsCategoryData
+	categoryQuery := r.db.WithContext(ctx).
+		Table("expense_items ei").
+		Select(`
+			pc.id as purchase_category_id,
+			pc.name as purchase_category_name,
+			pc.type as purchase_category_type,
+			COALESCE(SUM(ei.amount), 0) as total_amount,
+			COUNT(DISTINCT e.id) as expense_count,
+			COUNT(ei.id) as item_count
+		`).
+		Joins("JOIN expenses e ON ei.expense_id = e.id").
+		Joins("JOIN purchase_categories pc ON ei.purchase_category_id = pc.id").
+		Where("e.organization_id = ?", organizationID).
+		Where("pc.type = ?", entities.PurchaseCategoryTypeExpense).
+		Where("e.status = ?", "approved").
+		Where("e.transaction_date >= ? AND e.transaction_date <= ?", dateFrom, dateTo).
+		Group("pc.id, pc.name, pc.type").
+		Order("total_amount DESC")
+	if outletID != nil {
+		categoryQuery = categoryQuery.Where("e.outlet_id = ?", *outletID)
+	}
+	if err := categoryQuery.Scan(&categoryData).Error; err != nil {
+		return nil, err
+	}
+
+	var chartOfAccountData []entities.ExpenseAnalyticsChartOfAccountData
+	chartOfAccountQuery := r.db.WithContext(ctx).
+		Table("expense_items ei").
+		Select(`
+			COALESCE(parent_coa.id, coa.id) as chart_of_account_id,
+			COALESCE(parent_coa.name, coa.name, 'Lain-lain') as chart_of_account_name,
+			COALESCE(SUM(ei.amount), 0) as total_amount,
+			COUNT(DISTINCT e.id) as expense_count,
+			COUNT(ei.id) as item_count
+		`).
+		Joins("JOIN expenses e ON ei.expense_id = e.id").
+		Joins("JOIN chart_of_accounts coa ON ei.chart_of_account_id = coa.id").
+		Joins("LEFT JOIN chart_of_accounts parent_coa ON coa.parent_id = parent_coa.id").
+		Where("e.organization_id = ?", organizationID).
+		Where("e.status = ?", "approved").
+		Where("e.transaction_date >= ? AND e.transaction_date <= ?", dateFrom, dateTo).
+		Group("COALESCE(parent_coa.id, coa.id), COALESCE(parent_coa.name, coa.name, 'Lain-lain')").
+		Order("total_amount DESC")
+	if outletID != nil {
+		chartOfAccountQuery = chartOfAccountQuery.Where("e.outlet_id = ?", *outletID)
+	}
+	if err := chartOfAccountQuery.Scan(&chartOfAccountData).Error; err != nil {
+		return nil, err
+	}
+
+	var itemData []entities.ExpenseAnalyticsItemData
+	itemQuery := r.db.WithContext(ctx).
+		Table("expense_items ei").
+		Select(`
+			COALESCE(NULLIF(ei.item, ''), ei.description, coa.name) as item,
+			COALESCE(SUM(ei.amount), 0) as total_amount,
+			COUNT(DISTINCT e.id) as expense_count,
+			COUNT(ei.id) as item_count
+		`).
+		Joins("JOIN expenses e ON ei.expense_id = e.id").
+		Joins("JOIN chart_of_accounts coa ON ei.chart_of_account_id = coa.id").
+		Where("e.organization_id = ?", organizationID).
+		Where("e.status = ?", "approved").
+		Where("e.transaction_date >= ? AND e.transaction_date <= ?", dateFrom, dateTo).
+		Group("COALESCE(NULLIF(ei.item, ''), ei.description, coa.name)").
+		Order("total_amount DESC")
+	if outletID != nil {
+		itemQuery = itemQuery.Where("e.outlet_id = ?", *outletID)
+	}
+	if err := itemQuery.Scan(&itemData).Error; err != nil {
+		return nil, err
+	}
+
+	return &entities.ExpenseAnalytics{
+		Summary:            summary,
+		Data:               data,
+		CategoryData:       categoryData,
+		ChartOfAccountData: chartOfAccountData,
+		ItemData:           itemData,
+	}, nil
+}
+
+func (r *ExpenseRepositoryImpl) CreateItem(ctx context.Context, item *entities.ExpenseItem) error {
+	return r.db.WithContext(ctx).Create(item).Error
+}
+
+func (r *ExpenseRepositoryImpl) DeleteItemsByExpenseID(ctx context.Context, expenseID uuid.UUID) error {
+	return r.db.WithContext(ctx).Delete(&entities.ExpenseItem{}, "expense_id = ?", expenseID).Error
+}

internal/repository/ingredient_unit_converter_repository.go

@@ -173,4 +173,3 @@ func (r *IngredientUnitConverterRepositoryImpl) ConvertQuantity(ctx context.Cont
 	// If no converter found, return error
 	return 0, fmt.Errorf("no conversion found between units %s and %s for ingredient %s", fromUnitID, toUnitID, ingredientID)
 }
-

internal/repository/order_repository.go

@@ -60,6 +60,8 @@ func (r *OrderRepositoryImpl) GetWithRelations(ctx context.Context, id uuid.UUID
 		Preload("User").
 		Preload("OrderItems").
 		Preload("OrderItems.Product").
+		Preload("OrderItems.Product.Category").
+		Preload("OrderItems.Product.ProductOutletPrices").
 		Preload("OrderItems.ProductVariant").
 		Preload("Payments").
 		Preload("Payments.PaymentMethod").
@@ -139,6 +141,8 @@ func (r *OrderRepositoryImpl) List(ctx context.Context, filters map[string]inter
 		Preload("User").
 		Preload("OrderItems").
 		Preload("OrderItems.Product").
+		Preload("OrderItems.Product.Category").
+		Preload("OrderItems.Product.ProductOutletPrices").
 		Preload("OrderItems.ProductVariant").
 		Preload("Payments").
 		Preload("Payments.PaymentMethod").
@@ -155,6 +159,8 @@ func (r *OrderRepositoryImpl) ListBySessionID(ctx context.Context, sessionID str
 		Preload("User").
 		Preload("OrderItems").
 		Preload("OrderItems.Product").
+		Preload("OrderItems.Product.Category").
+		Preload("OrderItems.Product.ProductOutletPrices").
 		Preload("OrderItems.ProductVariant").
 		Preload("Payments").
 		Preload("Payments.PaymentMethod").

internal/repository/organization_repository.go

@@ -2,6 +2,8 @@ package repository
 
 import (
 	"context"
+	"time"
+
 	"github.com/google/uuid"
 
 	"apskel-pos-be/internal/entities"
@@ -110,3 +112,29 @@ func (r *OrganizationRepositoryImpl) GetTotalOmset(ctx context.Context, organiza
 		Scan(&total).Error
 	return total, err
 }
+
+// GetTodayOmset returns the total revenue from completed orders for an organization on the current calendar day.
+func (r *OrganizationRepositoryImpl) GetTodayOmset(ctx context.Context, organizationID uuid.UUID) (float64, error) {
+	var total float64
+	err := r.db.WithContext(ctx).
+		Table("orders").
+		Where(
+			"organization_id = ? AND payment_status = ? AND is_void = ? AND is_refund = ? AND created_at >= ? AND created_at < ?",
+			organizationID, "completed", false, false,
+			todayStart(), tomorrowStart(),
+		).
+		Select("COALESCE(SUM(total_amount), 0)").
+		Scan(&total).Error
+	return total, err
+}
+
+// todayStart returns midnight of the current local day.
+func todayStart() time.Time {
+	now := time.Now()
+	return time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 0, now.Location())
+}
+
+// tomorrowStart returns midnight of the next local day.
+func tomorrowStart() time.Time {
+	return todayStart().AddDate(0, 0, 1)
+}

internal/repository/outlet_repository.go

@@ -3,6 +3,7 @@ package repository
 import (
 	"apskel-pos-be/internal/entities"
 	"context"
+	"time"
 
 	"github.com/google/uuid"
 	"gorm.io/gorm"
@@ -103,3 +104,22 @@ func (r *OutletRepositoryImpl) Count(ctx context.Context, filters map[string]int
 	err := query.Count(&count).Error
 	return count, err
 }
+
+// GetTodayOmset returns the total revenue from completed orders for an outlet on the current calendar day.
+func (r *OutletRepositoryImpl) GetTodayOmset(ctx context.Context, outletID uuid.UUID) (float64, error) {
+	var total float64
+	now := time.Now()
+	todayStart := time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 0, now.Location())
+	tomorrowStart := todayStart.AddDate(0, 0, 1)
+
+	err := r.db.WithContext(ctx).
+		Table("orders").
+		Where(
+			"outlet_id = ? AND payment_status = ? AND is_void = ? AND is_refund = ? AND created_at >= ? AND created_at < ?",
+			outletID, "completed", false, false,
+			todayStart, tomorrowStart,
+		).
+		Select("COALESCE(SUM(total_amount), 0)").
+		Scan(&total).Error
+	return total, err
+}

internal/repository/product_outlet_price_repository.go

@@ -7,7 +7,6 @@ import (
 
 	"github.com/google/uuid"
 	"gorm.io/gorm"
-	"gorm.io/gorm/clause"
 )
 
 type ProductOutletPriceRepository interface {
@@ -53,10 +52,18 @@ func (r *ProductOutletPriceRepositoryImpl) GetByOutlet(ctx context.Context, outl
 }
 
 func (r *ProductOutletPriceRepositoryImpl) Upsert(ctx context.Context, price *entities.ProductOutletPrice) error {
-	return r.db.WithContext(ctx).Clauses(clause.OnConflict{
-		Columns:   []clause.Column{{Name: "product_id"}, {Name: "outlet_id"}},
-		DoUpdates: clause.AssignmentColumns([]string{"price", "updated_at"}),
-	}).Create(price).Error
+	if price.ID == uuid.Nil {
+		price.ID = uuid.New()
+	}
+	return r.db.WithContext(ctx).Exec(`
+		INSERT INTO product_outlet_prices (id, product_id, outlet_id, price, print_to_checker, created_at, updated_at)
+		VALUES (?, ?, ?, ?, ?, NOW(), NOW())
+		ON CONFLICT (product_id, outlet_id)
+		DO UPDATE SET
+			price = EXCLUDED.price,
+			print_to_checker = EXCLUDED.print_to_checker,
+			updated_at = NOW()
+	`, price.ID, price.ProductID, price.OutletID, price.Price, price.PrintToChecker).Error
 }
 
 func (r *ProductOutletPriceRepositoryImpl) Delete(ctx context.Context, id uuid.UUID) error {

internal/repository/product_repository.go

@@ -178,6 +178,26 @@ func (r *ProductRepositoryImpl) ExistsByName(ctx context.Context, organizationID
 	return count > 0, err
 }
 
+// ExistsByNameInOutlet checks name uniqueness scoped to a specific outlet via product_outlet_prices.
+// Falls back to organization-scoped check when outletID is zero.
+func (r *ProductRepositoryImpl) ExistsByNameInOutlet(ctx context.Context, organizationID uuid.UUID, outletID uuid.UUID, name string, excludeID *uuid.UUID) (bool, error) {
+	if outletID == uuid.Nil {
+		return r.ExistsByName(ctx, organizationID, name, excludeID)
+	}
+
+	query := r.db.WithContext(ctx).Model(&entities.Product{}).
+		Joins("INNER JOIN product_outlet_prices pop ON pop.product_id = products.id AND pop.outlet_id = ?", outletID).
+		Where("products.organization_id = ? AND products.name = ?", organizationID, name)
+
+	if excludeID != nil {
+		query = query.Where("products.id != ?", *excludeID)
+	}
+
+	var count int64
+	err := query.Count(&count).Error
+	return count > 0, err
+}
+
 func (r *ProductRepositoryImpl) UpdateActiveStatus(ctx context.Context, id uuid.UUID, isActive bool) error {
 	return r.db.WithContext(ctx).Model(&entities.Product{}).
 		Where("id = ?", id).

internal/repository/purchase_category_repository.go

@@ -0,0 +1,91 @@
+package repository
+
+import (
+	"context"
+
+	"apskel-pos-be/internal/entities"
+
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+)
+
+type PurchaseCategoryRepositoryImpl struct {
+	db *gorm.DB
+}
+
+func NewPurchaseCategoryRepositoryImpl(db *gorm.DB) *PurchaseCategoryRepositoryImpl {
+	return &PurchaseCategoryRepositoryImpl{db: db}
+}
+
+func (r *PurchaseCategoryRepositoryImpl) Create(ctx context.Context, category *entities.PurchaseCategory) error {
+	return r.db.WithContext(ctx).Create(category).Error
+}
+
+func (r *PurchaseCategoryRepositoryImpl) GetByIDAndOrganizationID(ctx context.Context, id, organizationID uuid.UUID) (*entities.PurchaseCategory, error) {
+	var category entities.PurchaseCategory
+	err := r.db.WithContext(ctx).
+		First(&category, "id = ? AND organization_id = ?", id, organizationID).Error
+	if err != nil {
+		return nil, err
+	}
+	return &category, nil
+}
+
+func (r *PurchaseCategoryRepositoryImpl) Update(ctx context.Context, category *entities.PurchaseCategory) error {
+	return r.db.WithContext(ctx).Save(category).Error
+}
+
+func (r *PurchaseCategoryRepositoryImpl) SoftDelete(ctx context.Context, id, organizationID uuid.UUID) error {
+	return r.db.WithContext(ctx).
+		Model(&entities.PurchaseCategory{}).
+		Where("id = ? AND organization_id = ?", id, organizationID).
+		Update("is_active", false).Error
+}
+
+func (r *PurchaseCategoryRepositoryImpl) List(ctx context.Context, organizationID uuid.UUID, filters map[string]interface{}, limit, offset int) ([]*entities.PurchaseCategory, int64, error) {
+	var categories []*entities.PurchaseCategory
+	var total int64
+
+	query := r.db.WithContext(ctx).
+		Model(&entities.PurchaseCategory{}).
+		Where("organization_id = ?", organizationID)
+
+	for key, value := range filters {
+		switch key {
+		case "search":
+			searchValue := "%" + value.(string) + "%"
+			query = query.Where("name ILIKE ? OR code ILIKE ?", searchValue, searchValue)
+		case "parent_id":
+			query = query.Where("parent_id = ?", value)
+		case "type":
+			query = query.Where("type = ?", value)
+		case "is_active":
+			query = query.Where("is_active = ?", value)
+		}
+	}
+
+	if err := query.Count(&total).Error; err != nil {
+		return nil, 0, err
+	}
+
+	err := query.
+		Order("parent_id NULLS FIRST, sort_order ASC, name ASC").
+		Limit(limit).
+		Offset(offset).
+		Find(&categories).Error
+	return categories, total, err
+}
+
+func (r *PurchaseCategoryRepositoryImpl) ExistsByCode(ctx context.Context, organizationID uuid.UUID, code string, excludeID *uuid.UUID) (bool, error) {
+	query := r.db.WithContext(ctx).
+		Model(&entities.PurchaseCategory{}).
+		Where("organization_id = ? AND code = ?", organizationID, code)
+
+	if excludeID != nil {
+		query = query.Where("id != ?", *excludeID)
+	}
+
+	var count int64
+	err := query.Count(&count).Error
+	return count > 0, err
+}

internal/repository/purchase_order_repository.go

@@ -31,6 +31,7 @@ func (r *PurchaseOrderRepositoryImpl) GetByID(ctx context.Context, id uuid.UUID)
 	err := r.db.WithContext(ctx).
 		Preload("Vendor").
 		Preload("Items.Ingredient").
+		Preload("Items.PurchaseCategory").
 		Preload("Items.Unit").
 		Preload("Attachments.File").
 		First(&po, "id = ?", id).Error
@@ -45,6 +46,7 @@ func (r *PurchaseOrderRepositoryImpl) GetByIDAndOrganizationID(ctx context.Conte
 	err := r.db.WithContext(ctx).
 		Preload("Vendor").
 		Preload("Items.Ingredient").
+		Preload("Items.PurchaseCategory").
 		Preload("Items.Unit").
 		Preload("Attachments.File").
 		Where("id = ? AND organization_id = ?", id, organizationID).
@@ -105,6 +107,7 @@ func (r *PurchaseOrderRepositoryImpl) List(ctx context.Context, organizationID u
 	err := query.
 		Preload("Vendor").
 		Preload("Items.Ingredient").
+		Preload("Items.PurchaseCategory").
 		Preload("Items.Unit").
 		Preload("Attachments.File").
 		Order("created_at DESC").
@@ -168,6 +171,7 @@ func (r *PurchaseOrderRepositoryImpl) GetByStatus(ctx context.Context, organizat
 		Where("organization_id = ? AND status = ?", organizationID, status).
 		Preload("Vendor").
 		Preload("Items.Ingredient").
+		Preload("Items.PurchaseCategory").
 		Preload("Items.Unit").
 		Find(&pos).Error
 	return pos, err
@@ -179,6 +183,7 @@ func (r *PurchaseOrderRepositoryImpl) GetOverdue(ctx context.Context, organizati
 		Where("organization_id = ? AND due_date < ? AND status IN (?)", organizationID, time.Now(), []string{"draft", "sent", "approved"}).
 		Preload("Vendor").
 		Preload("Items.Ingredient").
+		Preload("Items.PurchaseCategory").
 		Preload("Items.Unit").
 		Find(&pos).Error
 	return pos, err
@@ -219,6 +224,7 @@ func (r *PurchaseOrderRepositoryImpl) GetItemsByPurchaseOrderID(ctx context.Cont
 	var items []*entities.PurchaseOrderItem
 	err := r.db.WithContext(ctx).
 		Preload("Ingredient").
+		Preload("PurchaseCategory").
 		Preload("Unit").
 		Where("purchase_order_id = ?", purchaseOrderID).
 		Find(&items).Error

internal/repository/tx_manager.go

@@ -2,6 +2,7 @@ package repository
 
 import (
 	"context"
+	"database/sql"
 
 	"gorm.io/gorm"
 )
@@ -28,8 +29,24 @@ func NewTxManager(db *gorm.DB) *TxManager { return &TxManager{db: db} }
 
 // WithTransaction runs fn inside a DB transaction, injecting the *gorm.DB tx into ctx.
 func (m *TxManager) WithTransaction(ctx context.Context, fn func(ctx context.Context) error) error {
+	if m == nil || m.db == nil {
+		return fn(ctx)
+	}
+
 	return m.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
 		ctxTx := context.WithValue(ctx, txKey, tx)
 		return fn(ctxTx)
 	})
 }
+
+// WithTransactionOptions runs fn inside a DB transaction with custom TxOptions (e.g. isolation level).
+func (m *TxManager) WithTransactionOptions(ctx context.Context, opts *sql.TxOptions, fn func(ctx context.Context) error) error {
+	if m == nil || m.db == nil {
+		return fn(ctx)
+	}
+
+	return m.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
+		ctxTx := context.WithValue(ctx, txKey, tx)
+		return fn(ctxTx)
+	}, opts)
+}

internal/router/router.go

@@ -9,6 +9,7 @@ import (
 	"apskel-pos-be/internal/validator"
 
 	"github.com/gin-gonic/gin"
+	"github.com/redis/go-redis/v9"
 )
 
 type Router struct {
@@ -35,6 +36,7 @@ type Router struct {
 	productRecipeHandler              *handler.ProductRecipeHandler
 	vendorHandler                     *handler.VendorHandler
 	purchaseOrderHandler              *handler.PurchaseOrderHandler
+	purchaseCategoryHandler           *handler.PurchaseCategoryHandler
 	unitConverterHandler              *handler.IngredientUnitConverterHandler
 	chartOfAccountTypeHandler         *handler.ChartOfAccountTypeHandler
 	chartOfAccountHandler             *handler.ChartOfAccountHandler
@@ -50,11 +52,13 @@ type Router struct {
 	notificationHandler               *handler.NotificationHandler
 	selfOrderHandler                  *handler.SelfOrderHandler
 	productOutletPriceHandler         *handler.ProductOutletPriceHandler
+	expenseHandler                    *handler.ExpenseHandler
 	authMiddleware                    *middleware.AuthMiddleware
 	customerAuthMiddleware            *middleware.CustomerAuthMiddleware
+	redisClient                       *redis.Client
 }
 
-func NewRouter(cfg *config.Config, healthHandler *handler.HealthHandler, authService service.AuthService, authMiddleware *middleware.AuthMiddleware, userService *service.UserServiceImpl, userValidator *validator.UserValidatorImpl, organizationService service.OrganizationService, organizationValidator validator.OrganizationValidator, outletService service.OutletService, outletValidator validator.OutletValidator, outletSettingService service.OutletSettingService, categoryService service.CategoryService, categoryValidator validator.CategoryValidator, productService service.ProductService, productValidator validator.ProductValidator, productVariantService service.ProductVariantService, productVariantValidator validator.ProductVariantValidator, inventoryService service.InventoryService, inventoryValidator validator.InventoryValidator, orderService service.OrderService, orderValidator validator.OrderValidator, fileService service.FileService, fileValidator validator.FileValidator, customerService service.CustomerService, customerValidator validator.CustomerValidator, paymentMethodService service.PaymentMethodService, paymentMethodValidator validator.PaymentMethodValidator, analyticsService *service.AnalyticsServiceImpl, reportService service.ReportService, tableService *service.TableServiceImpl, tableValidator *validator.TableValidator, unitService handler.UnitService, ingredientService handler.IngredientService, productRecipeService service.ProductRecipeService, vendorService service.VendorService, vendorValidator validator.VendorValidator, purchaseOrderService service.PurchaseOrderService, purchaseOrderValidator validator.PurchaseOrderValidator, unitConverterService service.IngredientUnitConverterService, unitConverterValidator validator.IngredientUnitConverterValidator, chartOfAccountTypeService service.ChartOfAccountTypeService, chartOfAccountTypeValidator validator.ChartOfAccountTypeValidator, chartOfAccountService service.ChartOfAccountService, chartOfAccountValidator validator.ChartOfAccountValidator, accountService service.AccountService, accountValidator validator.AccountValidator, orderIngredientTransactionService service.OrderIngredientTransactionService, orderIngredientTransactionValidator validator.OrderIngredientTransactionValidator, gamificationService service.GamificationService, gamificationValidator validator.GamificationValidator, rewardService service.RewardService, rewardValidator validator.RewardValidator, campaignService service.CampaignService, campaignValidator validator.CampaignValidator, customerAuthService service.CustomerAuthService, customerAuthValidator validator.CustomerAuthValidator, customerPointsService service.CustomerPointsService, spinGameService service.SpinGameService, customerAuthMiddleware *middleware.CustomerAuthMiddleware, userDeviceService service.UserDeviceService, userDeviceValidator validator.UserDeviceValidator, notificationService service.NotificationService, notificationValidator validator.NotificationValidator, productOutletPriceService service.ProductOutletPriceService, productOutletPriceValidator validator.ProductOutletPriceValidator, selfOrderHandler *handler.SelfOrderHandler) *Router {
+func NewRouter(cfg *config.Config, healthHandler *handler.HealthHandler, authService service.AuthService, authMiddleware *middleware.AuthMiddleware, userService *service.UserServiceImpl, userValidator *validator.UserValidatorImpl, organizationService service.OrganizationService, organizationValidator validator.OrganizationValidator, outletService service.OutletService, outletValidator validator.OutletValidator, outletSettingService service.OutletSettingService, categoryService service.CategoryService, categoryValidator validator.CategoryValidator, productService service.ProductService, productValidator validator.ProductValidator, productVariantService service.ProductVariantService, productVariantValidator validator.ProductVariantValidator, inventoryService service.InventoryService, inventoryValidator validator.InventoryValidator, orderService service.OrderService, orderValidator validator.OrderValidator, fileService service.FileService, fileValidator validator.FileValidator, customerService service.CustomerService, customerValidator validator.CustomerValidator, paymentMethodService service.PaymentMethodService, paymentMethodValidator validator.PaymentMethodValidator, analyticsService *service.AnalyticsServiceImpl, reportService service.ReportService, tableService *service.TableServiceImpl, tableValidator *validator.TableValidator, unitService handler.UnitService, ingredientService handler.IngredientService, productRecipeService service.ProductRecipeService, vendorService service.VendorService, vendorValidator validator.VendorValidator, purchaseOrderService service.PurchaseOrderService, purchaseOrderValidator validator.PurchaseOrderValidator, purchaseCategoryService service.PurchaseCategoryService, purchaseCategoryValidator validator.PurchaseCategoryValidator, unitConverterService service.IngredientUnitConverterService, unitConverterValidator validator.IngredientUnitConverterValidator, chartOfAccountTypeService service.ChartOfAccountTypeService, chartOfAccountTypeValidator validator.ChartOfAccountTypeValidator, chartOfAccountService service.ChartOfAccountService, chartOfAccountValidator validator.ChartOfAccountValidator, accountService service.AccountService, accountValidator validator.AccountValidator, orderIngredientTransactionService service.OrderIngredientTransactionService, orderIngredientTransactionValidator validator.OrderIngredientTransactionValidator, gamificationService service.GamificationService, gamificationValidator validator.GamificationValidator, rewardService service.RewardService, rewardValidator validator.RewardValidator, campaignService service.CampaignService, campaignValidator validator.CampaignValidator, customerAuthService service.CustomerAuthService, customerAuthValidator validator.CustomerAuthValidator, customerPointsService service.CustomerPointsService, spinGameService service.SpinGameService, customerAuthMiddleware *middleware.CustomerAuthMiddleware, userDeviceService service.UserDeviceService, userDeviceValidator validator.UserDeviceValidator, notificationService service.NotificationService, notificationValidator validator.NotificationValidator, productOutletPriceService service.ProductOutletPriceService, productOutletPriceValidator validator.ProductOutletPriceValidator, selfOrderHandler *handler.SelfOrderHandler, expenseService *service.ExpenseServiceImpl, expenseValidator *validator.ExpenseValidatorImpl, redisClient *redis.Client) *Router {
 
 	return &Router{
 		config:                            cfg,
@@ -79,6 +83,7 @@ func NewRouter(cfg *config.Config, healthHandler *handler.HealthHandler, authSer
 		productRecipeHandler:              handler.NewProductRecipeHandler(productRecipeService),
 		vendorHandler:                     handler.NewVendorHandler(vendorService, vendorValidator),
 		purchaseOrderHandler:              handler.NewPurchaseOrderHandler(purchaseOrderService, purchaseOrderValidator),
+		purchaseCategoryHandler:           handler.NewPurchaseCategoryHandler(purchaseCategoryService, purchaseCategoryValidator),
 		unitConverterHandler:              handler.NewIngredientUnitConverterHandler(unitConverterService, unitConverterValidator),
 		chartOfAccountTypeHandler:         handler.NewChartOfAccountTypeHandler(chartOfAccountTypeService, chartOfAccountTypeValidator),
 		chartOfAccountHandler:             handler.NewChartOfAccountHandler(chartOfAccountService, chartOfAccountValidator),
@@ -97,6 +102,8 @@ func NewRouter(cfg *config.Config, healthHandler *handler.HealthHandler, authSer
 		notificationHandler:               handler.NewNotificationHandler(notificationService, notificationValidator),
 		selfOrderHandler:                  selfOrderHandler,
 		productOutletPriceHandler:         handler.NewProductOutletPriceHandler(productOutletPriceService, productOutletPriceValidator),
+		expenseHandler:                    handler.NewExpenseHandler(expenseService, expenseValidator),
+		redisClient:                       redisClient,
 	}
 }
 
@@ -272,19 +279,19 @@ func (r *Router) addAppRoutes(rg *gin.Engine) {
 				orders.GET("", r.orderHandler.ListOrders)
 				orders.GET("/:id", r.orderHandler.GetOrderByID)
 				orders.POST("", r.orderHandler.CreateOrder)
-				orders.POST("/:id/add-items", r.orderHandler.AddToOrder)
+				orders.POST("/:id/add-items", middleware.IdempotencyMiddleware(r.redisClient), r.orderHandler.AddToOrder)
 				orders.PUT("/:id", r.orderHandler.UpdateOrder)
 				orders.PUT("/:id/customer", r.orderHandler.SetOrderCustomer)
-				orders.POST("/void", r.orderHandler.VoidOrder)
-				orders.POST("/:id/refund", r.orderHandler.RefundOrder)
+				orders.POST("/void", middleware.IdempotencyMiddleware(r.redisClient), r.orderHandler.VoidOrder)
+				orders.POST("/:id/refund", middleware.IdempotencyMiddleware(r.redisClient), r.orderHandler.RefundOrder)
 				orders.POST("/split-bill", r.orderHandler.SplitBill)
 			}
 
 			payments := protected.Group("/payments")
 			payments.Use(r.authMiddleware.RequireAdminOrManager())
 			{
-				payments.POST("", r.orderHandler.CreatePayment)
-				payments.POST("/:id/refund", r.orderHandler.RefundPayment)
+				payments.POST("", middleware.IdempotencyMiddleware(r.redisClient), r.orderHandler.CreatePayment)
+				payments.POST("/:id/refund", middleware.IdempotencyMiddleware(r.redisClient), r.orderHandler.RefundPayment)
 			}
 
 			paymentMethods := protected.Group("/payment-methods")
@@ -325,10 +332,13 @@ func (r *Router) addAppRoutes(rg *gin.Engine) {
 			{
 				analytics.GET("/payment-methods", r.analyticsHandler.GetPaymentMethodAnalytics)
 				analytics.GET("/sales", r.analyticsHandler.GetSalesAnalytics)
+				analytics.GET("/purchasing", r.analyticsHandler.GetPurchasingAnalytics)
 				analytics.GET("/products", r.analyticsHandler.GetProductAnalytics)
 				analytics.GET("/categories", r.analyticsHandler.GetProductAnalyticsPerCategory)
 				analytics.GET("/dashboard", r.analyticsHandler.GetDashboardAnalytics)
 				analytics.GET("/profit-loss", r.analyticsHandler.GetProfitLossAnalytics)
+				analytics.GET("/exclusive-summary/period", r.analyticsHandler.GetExclusiveSummaryPeriod)
+				analytics.GET("/exclusive-summary/monthly", r.analyticsHandler.GetExclusiveSummaryMonthly)
 			}
 
 			tables := protected.Group("/tables")
@@ -381,6 +391,16 @@ func (r *Router) addAppRoutes(rg *gin.Engine) {
 				purchaseOrders.DELETE("/:id", r.purchaseOrderHandler.DeletePurchaseOrder)
 			}
 
+			purchaseCategories := protected.Group("/purchase-categories")
+			purchaseCategories.Use(r.authMiddleware.RequireAdminOrManager())
+			{
+				purchaseCategories.POST("", r.purchaseCategoryHandler.CreatePurchaseCategory)
+				purchaseCategories.GET("", r.purchaseCategoryHandler.ListPurchaseCategories)
+				purchaseCategories.GET("/:id", r.purchaseCategoryHandler.GetPurchaseCategory)
+				purchaseCategories.PUT("/:id", r.purchaseCategoryHandler.UpdatePurchaseCategory)
+				purchaseCategories.DELETE("/:id", r.purchaseCategoryHandler.DeletePurchaseCategory)
+			}
+
 			unitConverters := protected.Group("/unit-converters")
 			unitConverters.Use(r.authMiddleware.RequireAdminOrManager())
 			{
@@ -443,6 +463,17 @@ func (r *Router) addAppRoutes(rg *gin.Engine) {
 				accounts.GET("/:id/balance", r.accountHandler.GetAccountBalance)
 			}
 
+			expenses := protected.Group("/expenses")
+			expenses.Use(r.authMiddleware.RequireAdminOrManager())
+			{
+				expenses.POST("", r.expenseHandler.CreateExpense)
+				expenses.GET("", r.expenseHandler.ListExpenses)
+				expenses.GET("/analytics", r.expenseHandler.GetExpenseAnalytics)
+				expenses.GET("/:id", r.expenseHandler.GetExpense)
+				expenses.PUT("/:id", r.expenseHandler.UpdateExpense)
+				expenses.DELETE("/:id", r.expenseHandler.DeleteExpense)
+			}
+
 			orderIngredientTransactions := protected.Group("/order-ingredient-transactions")
 			orderIngredientTransactions.Use(r.authMiddleware.RequireAdminOrManager())
 			{

internal/service/account_service.go

@@ -60,12 +60,12 @@ func (s *AccountServiceImpl) ListAccounts(ctx context.Context, req *contract.Lis
 	if err != nil {
 		return nil, 0, err
 	}
-	
+
 	contractResp := make([]contract.AccountResponse, len(modelResp))
 	for i, resp := range modelResp {
 		contractResp[i] = *mappers.ModelToContractAccountResponse(&resp)
 	}
-	
+
 	return contractResp, total, nil
 }
 
@@ -74,12 +74,12 @@ func (s *AccountServiceImpl) GetAccountsByOrganization(ctx context.Context, orga
 	if err != nil {
 		return nil, err
 	}
-	
+
 	contractResp := make([]contract.AccountResponse, len(modelResp))
 	for i, resp := range modelResp {
 		contractResp[i] = *mappers.ModelToContractAccountResponse(&resp)
 	}
-	
+
 	return contractResp, nil
 }
 
@@ -88,12 +88,12 @@ func (s *AccountServiceImpl) GetAccountsByChartOfAccount(ctx context.Context, ch
 	if err != nil {
 		return nil, err
 	}
-	
+
 	contractResp := make([]contract.AccountResponse, len(modelResp))
 	for i, resp := range modelResp {
 		contractResp[i] = *mappers.ModelToContractAccountResponse(&resp)
 	}
-	
+
 	return contractResp, nil
 }
 

internal/service/analytics_service.go

@@ -13,10 +13,13 @@ import (
 type AnalyticsService interface {
 	GetPaymentMethodAnalytics(ctx context.Context, req *models.PaymentMethodAnalyticsRequest) (*models.PaymentMethodAnalyticsResponse, error)
 	GetSalesAnalytics(ctx context.Context, req *models.SalesAnalyticsRequest) (*models.SalesAnalyticsResponse, error)
+	GetPurchasingAnalytics(ctx context.Context, req *models.PurchasingAnalyticsRequest) (*models.PurchasingAnalyticsResponse, error)
 	GetProductAnalytics(ctx context.Context, req *models.ProductAnalyticsRequest) (*models.ProductAnalyticsResponse, error)
 	GetProductAnalyticsPerCategory(ctx context.Context, req *models.ProductAnalyticsPerCategoryRequest) (*models.ProductAnalyticsPerCategoryResponse, error)
 	GetDashboardAnalytics(ctx context.Context, req *models.DashboardAnalyticsRequest) (*models.DashboardAnalyticsResponse, error)
 	GetProfitLossAnalytics(ctx context.Context, req *models.ProfitLossAnalyticsRequest) (*models.ProfitLossAnalyticsResponse, error)
+	GetExclusiveSummaryPeriod(ctx context.Context, req *models.ExclusiveSummaryPeriodRequest) (*models.ExclusiveSummaryPeriodResponse, error)
+	GetExclusiveSummaryMonthly(ctx context.Context, req *models.ExclusiveSummaryMonthlyRequest) (*models.ExclusiveSummaryMonthlyResponse, error)
 }
 
 type AnalyticsServiceImpl struct {
@@ -57,6 +60,19 @@ func (s *AnalyticsServiceImpl) GetSalesAnalytics(ctx context.Context, req *model
 	return response, nil
 }
 
+func (s *AnalyticsServiceImpl) GetPurchasingAnalytics(ctx context.Context, req *models.PurchasingAnalyticsRequest) (*models.PurchasingAnalyticsResponse, error) {
+	if err := s.validatePurchasingAnalyticsRequest(req); err != nil {
+		return nil, fmt.Errorf("validation error: %w", err)
+	}
+
+	response, err := s.analyticsProcessor.GetPurchasingAnalytics(ctx, req)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get purchasing analytics: %w", err)
+	}
+
+	return response, nil
+}
+
 func (s *AnalyticsServiceImpl) GetProductAnalytics(ctx context.Context, req *models.ProductAnalyticsRequest) (*models.ProductAnalyticsResponse, error) {
 	// Validate request
 	if err := s.validateProductAnalyticsRequest(req); err != nil {
@@ -120,18 +136,6 @@ func (s *AnalyticsServiceImpl) validatePaymentMethodAnalyticsRequest(req *models
 		return fmt.Errorf("date_from cannot be after date_to")
 	}
 
-	if req.GroupBy != "" {
-		validGroupBy := map[string]bool{
-			"day":   true,
-			"hour":  true,
-			"week":  true,
-			"month": true,
-		}
-		if !validGroupBy[req.GroupBy] {
-			return fmt.Errorf("invalid group_by value: %s", req.GroupBy)
-		}
-	}
-
 	return nil
 }
 
@@ -168,6 +172,42 @@ func (s *AnalyticsServiceImpl) validateSalesAnalyticsRequest(req *models.SalesAn
 	return nil
 }
 
+func (s *AnalyticsServiceImpl) validatePurchasingAnalyticsRequest(req *models.PurchasingAnalyticsRequest) error {
+	if req == nil {
+		return fmt.Errorf("request cannot be nil")
+	}
+
+	if req.OrganizationID == uuid.Nil {
+		return fmt.Errorf("organization ID is required")
+	}
+
+	if req.DateFrom.IsZero() {
+		return fmt.Errorf("date_from is required")
+	}
+
+	if req.DateTo.IsZero() {
+		return fmt.Errorf("date_to is required")
+	}
+
+	if req.DateFrom.After(req.DateTo) {
+		return fmt.Errorf("date_from cannot be after date_to")
+	}
+
+	if req.GroupBy != "" {
+		validGroupBy := map[string]bool{
+			"day":   true,
+			"hour":  true,
+			"week":  true,
+			"month": true,
+		}
+		if !validGroupBy[req.GroupBy] {
+			return fmt.Errorf("invalid group_by value: %s", req.GroupBy)
+		}
+	}
+
+	return nil
+}
+
 func (s *AnalyticsServiceImpl) validateProductAnalyticsRequest(req *models.ProductAnalyticsRequest) error {
 	if req.OrganizationID == uuid.Nil {
 		return fmt.Errorf("organization ID is required")
@@ -268,8 +308,82 @@ func (s *AnalyticsServiceImpl) validateProfitLossAnalyticsRequest(req *models.Pr
 		return fmt.Errorf("date_from cannot be after date_to")
 	}
 
-	if req.GroupBy != "" && req.GroupBy != "hour" && req.GroupBy != "day" && req.GroupBy != "week" && req.GroupBy != "month" {
-		return fmt.Errorf("invalid group_by value, must be one of: hour, day, week, month")
+	if req.GroupBy != "" {
+		validGroupBy := map[string]bool{
+			"day":   true,
+			"hour":  true,
+			"week":  true,
+			"month": true,
+		}
+		if !validGroupBy[req.GroupBy] {
+			return fmt.Errorf("invalid group_by value: %s", req.GroupBy)
+		}
+	}
+
+	return nil
+}
+
+func (s *AnalyticsServiceImpl) GetExclusiveSummaryPeriod(ctx context.Context, req *models.ExclusiveSummaryPeriodRequest) (*models.ExclusiveSummaryPeriodResponse, error) {
+	if err := s.validateExclusiveSummaryPeriodRequest(req); err != nil {
+		return nil, fmt.Errorf("validation error: %w", err)
+	}
+
+	response, err := s.analyticsProcessor.GetExclusiveSummaryPeriod(ctx, req)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get exclusive summary period: %w", err)
+	}
+
+	return response, nil
+}
+
+func (s *AnalyticsServiceImpl) GetExclusiveSummaryMonthly(ctx context.Context, req *models.ExclusiveSummaryMonthlyRequest) (*models.ExclusiveSummaryMonthlyResponse, error) {
+	if err := s.validateExclusiveSummaryMonthlyRequest(req); err != nil {
+		return nil, fmt.Errorf("validation error: %w", err)
+	}
+
+	response, err := s.analyticsProcessor.GetExclusiveSummaryMonthly(ctx, req)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get exclusive summary monthly: %w", err)
+	}
+
+	return response, nil
+}
+
+func (s *AnalyticsServiceImpl) validateExclusiveSummaryPeriodRequest(req *models.ExclusiveSummaryPeriodRequest) error {
+	if req == nil {
+		return fmt.Errorf("request cannot be nil")
+	}
+
+	if req.OrganizationID == uuid.Nil {
+		return fmt.Errorf("organization_id is required")
+	}
+
+	if req.DateFrom.IsZero() {
+		return fmt.Errorf("date_from is required")
+	}
+
+	if req.DateTo.IsZero() {
+		return fmt.Errorf("date_to is required")
+	}
+
+	if req.DateFrom.After(req.DateTo) {
+		return fmt.Errorf("date_from cannot be after date_to")
+	}
+
+	return nil
+}
+
+func (s *AnalyticsServiceImpl) validateExclusiveSummaryMonthlyRequest(req *models.ExclusiveSummaryMonthlyRequest) error {
+	if req == nil {
+		return fmt.Errorf("request cannot be nil")
+	}
+
+	if req.OrganizationID == uuid.Nil {
+		return fmt.Errorf("organization_id is required")
+	}
+
+	if req.Month.IsZero() {
+		return fmt.Errorf("month is required")
 	}
 
 	return nil

internal/service/analytics_service_test.go

@@ -0,0 +1,256 @@
+package service
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"apskel-pos-be/internal/models"
+
+	"github.com/google/uuid"
+	"github.com/stretchr/testify/require"
+)
+
+type analyticsProcessorStub struct{}
+
+func (analyticsProcessorStub) GetPaymentMethodAnalytics(context.Context, *models.PaymentMethodAnalyticsRequest) (*models.PaymentMethodAnalyticsResponse, error) {
+	return nil, nil
+}
+
+func (analyticsProcessorStub) GetSalesAnalytics(context.Context, *models.SalesAnalyticsRequest) (*models.SalesAnalyticsResponse, error) {
+	return nil, nil
+}
+
+func (analyticsProcessorStub) GetPurchasingAnalytics(context.Context, *models.PurchasingAnalyticsRequest) (*models.PurchasingAnalyticsResponse, error) {
+	return &models.PurchasingAnalyticsResponse{}, nil
+}
+
+func (analyticsProcessorStub) GetProductAnalytics(context.Context, *models.ProductAnalyticsRequest) (*models.ProductAnalyticsResponse, error) {
+	return nil, nil
+}
+
+func (analyticsProcessorStub) GetProductAnalyticsPerCategory(context.Context, *models.ProductAnalyticsPerCategoryRequest) (*models.ProductAnalyticsPerCategoryResponse, error) {
+	return nil, nil
+}
+
+func (analyticsProcessorStub) GetDashboardAnalytics(context.Context, *models.DashboardAnalyticsRequest) (*models.DashboardAnalyticsResponse, error) {
+	return nil, nil
+}
+
+func (analyticsProcessorStub) GetProfitLossAnalytics(context.Context, *models.ProfitLossAnalyticsRequest) (*models.ProfitLossAnalyticsResponse, error) {
+	return nil, nil
+}
+
+func (analyticsProcessorStub) GetExclusiveSummaryPeriod(context.Context, *models.ExclusiveSummaryPeriodRequest) (*models.ExclusiveSummaryPeriodResponse, error) {
+	return &models.ExclusiveSummaryPeriodResponse{}, nil
+}
+
+func (analyticsProcessorStub) GetExclusiveSummaryMonthly(context.Context, *models.ExclusiveSummaryMonthlyRequest) (*models.ExclusiveSummaryMonthlyResponse, error) {
+	return &models.ExclusiveSummaryMonthlyResponse{}, nil
+}
+
+func TestAnalyticsServiceGetPurchasingAnalyticsValidation(t *testing.T) {
+	service := NewAnalyticsServiceImpl(analyticsProcessorStub{})
+	now := time.Date(2026, 5, 1, 0, 0, 0, 0, time.UTC)
+
+	tests := []struct {
+		name    string
+		req     *models.PurchasingAnalyticsRequest
+		wantErr string
+	}{
+		{
+			name: "missing organization",
+			req: &models.PurchasingAnalyticsRequest{
+				DateFrom: now,
+				DateTo:   now,
+			},
+			wantErr: "organization ID is required",
+		},
+		{
+			name: "missing date_from",
+			req: &models.PurchasingAnalyticsRequest{
+				OrganizationID: uuid.New(),
+				DateTo:         now,
+			},
+			wantErr: "date_from is required",
+		},
+		{
+			name: "missing date_to",
+			req: &models.PurchasingAnalyticsRequest{
+				OrganizationID: uuid.New(),
+				DateFrom:       now,
+			},
+			wantErr: "date_to is required",
+		},
+		{
+			name: "reversed dates",
+			req: &models.PurchasingAnalyticsRequest{
+				OrganizationID: uuid.New(),
+				DateFrom:       now.AddDate(0, 0, 1),
+				DateTo:         now,
+			},
+			wantErr: "date_from cannot be after date_to",
+		},
+		{
+			name: "invalid group_by",
+			req: &models.PurchasingAnalyticsRequest{
+				OrganizationID: uuid.New(),
+				DateFrom:       now,
+				DateTo:         now,
+				GroupBy:        "quarter",
+			},
+			wantErr: "invalid group_by value: quarter",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			resp, err := service.GetPurchasingAnalytics(context.Background(), tt.req)
+
+			require.Nil(t, resp)
+			require.Error(t, err)
+			require.Contains(t, err.Error(), tt.wantErr)
+		})
+	}
+}
+
+func TestAnalyticsServiceGetPurchasingAnalyticsAllowsEmptyGroupBy(t *testing.T) {
+	service := NewAnalyticsServiceImpl(analyticsProcessorStub{})
+	now := time.Date(2026, 5, 1, 0, 0, 0, 0, time.UTC)
+
+	resp, err := service.GetPurchasingAnalytics(context.Background(), &models.PurchasingAnalyticsRequest{
+		OrganizationID: uuid.New(),
+		DateFrom:       now,
+		DateTo:         now,
+	})
+
+	require.NoError(t, err)
+	require.NotNil(t, resp)
+}
+
+func TestAnalyticsServiceGetProfitLossAnalyticsValidation(t *testing.T) {
+	service := NewAnalyticsServiceImpl(analyticsProcessorStub{})
+	now := time.Date(2026, 5, 1, 0, 0, 0, 0, time.UTC)
+
+	tests := []struct {
+		name    string
+		req     *models.ProfitLossAnalyticsRequest
+		wantErr string
+	}{
+		{
+			name: "missing date_from",
+			req: &models.ProfitLossAnalyticsRequest{
+				OrganizationID: uuid.New(),
+				DateTo:         now,
+			},
+			wantErr: "date_from is required",
+		},
+		{
+			name: "missing date_to",
+			req: &models.ProfitLossAnalyticsRequest{
+				OrganizationID: uuid.New(),
+				DateFrom:       now,
+			},
+			wantErr: "date_to is required",
+		},
+		{
+			name: "reversed dates",
+			req: &models.ProfitLossAnalyticsRequest{
+				OrganizationID: uuid.New(),
+				DateFrom:       now.AddDate(0, 0, 1),
+				DateTo:         now,
+			},
+			wantErr: "date_from cannot be after date_to",
+		},
+		{
+			name: "invalid group_by",
+			req: &models.ProfitLossAnalyticsRequest{
+				OrganizationID: uuid.New(),
+				DateFrom:       now,
+				DateTo:         now,
+				GroupBy:        "quarter",
+			},
+			wantErr: "invalid group_by value: quarter",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			resp, err := service.GetProfitLossAnalytics(context.Background(), tt.req)
+
+			require.Nil(t, resp)
+			require.Error(t, err)
+			require.Contains(t, err.Error(), tt.wantErr)
+		})
+	}
+}
+
+func TestAnalyticsServiceGetProfitLossAnalyticsAllowsEmptyGroupBy(t *testing.T) {
+	service := NewAnalyticsServiceImpl(analyticsProcessorStub{})
+	now := time.Date(2026, 5, 1, 0, 0, 0, 0, time.UTC)
+
+	resp, err := service.GetProfitLossAnalytics(context.Background(), &models.ProfitLossAnalyticsRequest{
+		OrganizationID: uuid.New(),
+		DateFrom:       now,
+		DateTo:         now,
+	})
+
+	require.NoError(t, err)
+	require.Nil(t, resp)
+}
+
+func TestAnalyticsServiceGetExclusiveSummaryPeriodValidation(t *testing.T) {
+	service := NewAnalyticsServiceImpl(analyticsProcessorStub{})
+	now := time.Date(2026, 5, 1, 0, 0, 0, 0, time.UTC)
+
+	tests := []struct {
+		name    string
+		req     *models.ExclusiveSummaryPeriodRequest
+		wantErr string
+	}{
+		{
+			name:    "nil request",
+			req:     nil,
+			wantErr: "request cannot be nil",
+		},
+		{
+			name: "missing organization",
+			req: &models.ExclusiveSummaryPeriodRequest{
+				DateFrom: now,
+				DateTo:   now,
+			},
+			wantErr: "organization_id is required",
+		},
+		{
+			name: "reversed dates",
+			req: &models.ExclusiveSummaryPeriodRequest{
+				OrganizationID: uuid.New(),
+				DateFrom:       now.AddDate(0, 0, 1),
+				DateTo:         now,
+			},
+			wantErr: "date_from cannot be after date_to",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			resp, err := service.GetExclusiveSummaryPeriod(context.Background(), tt.req)
+
+			require.Nil(t, resp)
+			require.Error(t, err)
+			require.Contains(t, err.Error(), tt.wantErr)
+		})
+	}
+}
+
+func TestAnalyticsServiceGetExclusiveSummaryMonthlyValidation(t *testing.T) {
+	service := NewAnalyticsServiceImpl(analyticsProcessorStub{})
+
+	resp, err := service.GetExclusiveSummaryMonthly(context.Background(), &models.ExclusiveSummaryMonthlyRequest{
+		OrganizationID: uuid.New(),
+	})
+
+	require.Nil(t, resp)
+	require.Error(t, err)
+	require.Contains(t, err.Error(), "month is required")
+}

internal/service/category_service.go

@@ -85,6 +85,9 @@ func (s *CategoryServiceImpl) ListCategories(ctx context.Context, req *contract.
 	if req.OrganizationID != nil {
 		filters["organization_id"] = *req.OrganizationID
 	}
+	if req.OutletID != nil {
+		filters["outlet_id"] = *req.OutletID
+	}
 	if req.BusinessType != "" {
 		filters["business_type"] = req.BusinessType
 	}

internal/service/chart_of_account_type_service.go

@@ -59,11 +59,11 @@ func (s *ChartOfAccountTypeServiceImpl) ListChartOfAccountTypes(ctx context.Cont
 	if err != nil {
 		return nil, 0, err
 	}
-	
+
 	contractResp := make([]contract.ChartOfAccountTypeResponse, len(modelResp))
 	for i, resp := range modelResp {
 		contractResp[i] = *mappers.ModelToContractChartOfAccountTypeResponse(&resp)
 	}
-	
+
 	return contractResp, total, nil
 }

internal/service/expense_service.go

@@ -0,0 +1,150 @@
+package service
+
+import (
+	"apskel-pos-be/internal/appcontext"
+	"context"
+	"time"
+
+	"apskel-pos-be/internal/constants"
+	"apskel-pos-be/internal/contract"
+	"apskel-pos-be/internal/processor"
+	"apskel-pos-be/internal/transformer"
+
+	"github.com/google/uuid"
+)
+
+type ExpenseService interface {
+	CreateExpense(ctx context.Context, apctx *appcontext.ContextInfo, req *contract.CreateExpenseRequest) *contract.Response
+	UpdateExpense(ctx context.Context, apctx *appcontext.ContextInfo, id uuid.UUID, req *contract.UpdateExpenseRequest) *contract.Response
+	DeleteExpense(ctx context.Context, apctx *appcontext.ContextInfo, id uuid.UUID) *contract.Response
+	GetExpenseByID(ctx context.Context, apctx *appcontext.ContextInfo, id uuid.UUID) *contract.Response
+	ListExpenses(ctx context.Context, apctx *appcontext.ContextInfo, req *contract.ListExpenseRequest) *contract.Response
+	GetExpenseAnalytics(ctx context.Context, apctx *appcontext.ContextInfo, req *contract.ExpenseAnalyticsRequest) *contract.Response
+}
+
+type ExpenseServiceImpl struct {
+	expenseProcessor processor.ExpenseProcessor
+}
+
+func NewExpenseService(expenseProcessor processor.ExpenseProcessor) *ExpenseServiceImpl {
+	return &ExpenseServiceImpl{
+		expenseProcessor: expenseProcessor,
+	}
+}
+
+func (s *ExpenseServiceImpl) CreateExpense(ctx context.Context, apctx *appcontext.ContextInfo, req *contract.CreateExpenseRequest) *contract.Response {
+	modelReq := transformer.CreateExpenseRequestToModel(req)
+
+	expenseResponse, err := s.expenseProcessor.CreateExpense(ctx, apctx.OrganizationID, modelReq)
+	if err != nil {
+		errorResp := contract.NewResponseError(constants.InternalServerErrorCode, constants.ExpenseServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errorResp})
+	}
+
+	contractResponse := transformer.ExpenseModelResponseToResponse(expenseResponse)
+	return contract.BuildSuccessResponse(contractResponse)
+}
+
+func (s *ExpenseServiceImpl) UpdateExpense(ctx context.Context, apctx *appcontext.ContextInfo, id uuid.UUID, req *contract.UpdateExpenseRequest) *contract.Response {
+	modelReq := transformer.UpdateExpenseRequestToModel(req)
+
+	expenseResponse, err := s.expenseProcessor.UpdateExpense(ctx, id, apctx.OrganizationID, modelReq)
+	if err != nil {
+		errorResp := contract.NewResponseError(constants.InternalServerErrorCode, constants.ExpenseServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errorResp})
+	}
+
+	contractResponse := transformer.ExpenseModelResponseToResponse(expenseResponse)
+	return contract.BuildSuccessResponse(contractResponse)
+}
+
+func (s *ExpenseServiceImpl) DeleteExpense(ctx context.Context, apctx *appcontext.ContextInfo, id uuid.UUID) *contract.Response {
+	err := s.expenseProcessor.DeleteExpense(ctx, id, apctx.OrganizationID)
+	if err != nil {
+		errorResp := contract.NewResponseError(constants.InternalServerErrorCode, constants.ExpenseServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errorResp})
+	}
+
+	return contract.BuildSuccessResponse(map[string]interface{}{
+		"message": "Expense deleted successfully",
+	})
+}
+
+func (s *ExpenseServiceImpl) GetExpenseByID(ctx context.Context, apctx *appcontext.ContextInfo, id uuid.UUID) *contract.Response {
+	expenseResponse, err := s.expenseProcessor.GetExpenseByID(ctx, id, apctx.OrganizationID)
+	if err != nil {
+		errorResp := contract.NewResponseError(constants.InternalServerErrorCode, constants.ExpenseServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errorResp})
+	}
+
+	contractResponse := transformer.ExpenseModelResponseToResponse(expenseResponse)
+	return contract.BuildSuccessResponse(contractResponse)
+}
+
+func (s *ExpenseServiceImpl) ListExpenses(ctx context.Context, apctx *appcontext.ContextInfo, req *contract.ListExpenseRequest) *contract.Response {
+	modelReq := transformer.ListExpenseRequestToModel(req)
+
+	filters := make(map[string]interface{})
+	if modelReq.Search != "" {
+		filters["search"] = modelReq.Search
+	}
+	if modelReq.Status != "" {
+		filters["status"] = modelReq.Status
+	}
+	if modelReq.OutletID != "" {
+		outletID, err := uuid.Parse(modelReq.OutletID)
+		if err == nil {
+			filters["outlet_id"] = outletID
+		}
+	}
+	if modelReq.StartDate != "" {
+		if startDate, err := time.Parse("2006-01-02", modelReq.StartDate); err == nil {
+			filters["start_date"] = startDate
+		}
+	}
+	if modelReq.EndDate != "" {
+		if endDate, err := time.Parse("2006-01-02", modelReq.EndDate); err == nil {
+			// include the full end date day
+			filters["end_date"] = endDate.Add(24*time.Hour - time.Nanosecond)
+		}
+	}
+
+	expenses, totalPages, err := s.expenseProcessor.ListExpenses(ctx, apctx.OrganizationID, filters, modelReq.Page, modelReq.Limit)
+	if err != nil {
+		errorResp := contract.NewResponseError(constants.InternalServerErrorCode, constants.ExpenseServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errorResp})
+	}
+
+	contractResponses := transformer.ExpenseModelResponsesToResponses(expenses)
+
+	response := contract.ListExpenseResponse{
+		Expenses:   contractResponses,
+		TotalCount: len(contractResponses),
+		Page:       modelReq.Page,
+		Limit:      modelReq.Limit,
+		TotalPages: totalPages,
+	}
+
+	return contract.BuildSuccessResponse(response)
+}
+
+func (s *ExpenseServiceImpl) GetExpenseAnalytics(ctx context.Context, apctx *appcontext.ContextInfo, req *contract.ExpenseAnalyticsRequest) *contract.Response {
+	modelReq, err := transformer.ExpenseAnalyticsRequestToModel(req)
+	if err != nil {
+		errorResp := contract.NewResponseError(constants.MalformedFieldErrorCode, constants.ExpenseServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errorResp})
+	}
+
+	modelReq.OrganizationID = apctx.OrganizationID
+	if apctx.OutletID != uuid.Nil {
+		modelReq.OutletID = &apctx.OutletID
+	}
+
+	response, err := s.expenseProcessor.GetExpenseAnalytics(ctx, modelReq)
+	if err != nil {
+		errorResp := contract.NewResponseError(constants.InternalServerErrorCode, constants.ExpenseServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errorResp})
+	}
+
+	return contract.BuildSuccessResponse(transformer.ExpenseAnalyticsModelToContract(response))
+}

internal/service/ingredient_unit_converter_service.go

@@ -160,4 +160,3 @@ func (s *IngredientUnitConverterServiceImpl) GetUnitsByIngredientID(ctx context.
 	contractResponse := transformer.IngredientUnitsModelResponseToResponse(unitsResponse)
 	return contract.BuildSuccessResponse(contractResponse)
 }
-

internal/service/inventory_movement_service.go

@@ -10,7 +10,7 @@ import (
 )
 
 type InventoryMovementService interface {
-	CreateIngredientMovement(ctx context.Context, ingredientID, organizationID, outletID, userID uuid.UUID, movementType entities.InventoryMovementType, quantity float64, unitCost float64, reason string, referenceType *entities.InventoryMovementReferenceType, referenceID *uuid.UUID) error
+	CreateIngredientMovement(ctx context.Context, ingredientID, organizationID, outletID, userID uuid.UUID, movementType entities.InventoryMovementType, quantity float64, unitCost float64, reason string, referenceType *entities.InventoryMovementReferenceType, referenceID *uuid.UUID, purchaseOrderItemID *uuid.UUID) error
 	CreateProductMovement(ctx context.Context, productID, organizationID, outletID, userID uuid.UUID, movementType entities.InventoryMovementType, quantity float64, unitCost float64, reason string, referenceType *entities.InventoryMovementReferenceType, referenceID *uuid.UUID) error
 }
 
@@ -26,7 +26,7 @@ func NewInventoryMovementService(inventoryMovementRepo repository.InventoryMovem
 	}
 }
 
-func (s *InventoryMovementServiceImpl) CreateIngredientMovement(ctx context.Context, ingredientID, organizationID, outletID, userID uuid.UUID, movementType entities.InventoryMovementType, quantity float64, unitCost float64, reason string, referenceType *entities.InventoryMovementReferenceType, referenceID *uuid.UUID) error {
+func (s *InventoryMovementServiceImpl) CreateIngredientMovement(ctx context.Context, ingredientID, organizationID, outletID, userID uuid.UUID, movementType entities.InventoryMovementType, quantity float64, unitCost float64, reason string, referenceType *entities.InventoryMovementReferenceType, referenceID *uuid.UUID, purchaseOrderItemID *uuid.UUID) error {
 	ingredient, err := s.ingredientRepo.GetByID(ctx, ingredientID, organizationID)
 	if err != nil {
 		return err
@@ -36,22 +36,23 @@ func (s *InventoryMovementServiceImpl) CreateIngredientMovement(ctx context.Cont
 	newQuantity := previousQuantity + quantity
 
 	movement := &entities.InventoryMovement{
-		ID:               uuid.New(),
-		OrganizationID:   organizationID,
-		OutletID:         outletID,
-		ItemID:           ingredientID,
-		ItemType:         "INGREDIENT",
-		MovementType:     movementType,
-		Quantity:         quantity,
-		PreviousQuantity: previousQuantity,
-		NewQuantity:      newQuantity,
-		UnitCost:         unitCost,
-		TotalCost:        unitCost * quantity,
-		ReferenceType:    referenceType,
-		ReferenceID:      referenceID,
-		UserID:           userID,
-		Reason:           &reason,
-		CreatedAt:        time.Now(),
+		ID:                  uuid.New(),
+		OrganizationID:      organizationID,
+		OutletID:            outletID,
+		ItemID:              ingredientID,
+		ItemType:            "INGREDIENT",
+		MovementType:        movementType,
+		Quantity:            quantity,
+		PreviousQuantity:    previousQuantity,
+		NewQuantity:         newQuantity,
+		UnitCost:            unitCost,
+		TotalCost:           unitCost * quantity,
+		ReferenceType:       referenceType,
+		ReferenceID:         referenceID,
+		PurchaseOrderItemID: purchaseOrderItemID,
+		UserID:              userID,
+		Reason:              &reason,
+		CreatedAt:           time.Now(),
 	}
 
 	err = s.inventoryMovementRepo.Create(ctx, movement)

internal/service/omset_milestone_scheduler.go

@@ -4,11 +4,11 @@ import (
 	"context"
 	"fmt"
 	"log"
+	"math"
 	"sync"
 	"time"
 
 	"apskel-pos-be/internal/constants"
-	"apskel-pos-be/internal/entities"
 	"apskel-pos-be/internal/models"
 	"apskel-pos-be/internal/processor"
 	"apskel-pos-be/internal/repository"
@@ -17,32 +17,38 @@ import (
 )
 
 const (
-	defaultCheckInterval = 1 * time.Hour
+	defaultCheckInterval = 5 * time.Minute
 	OmsetMillionRupiah   = 1_000_000.0
 )
 
-// OmsetMilestoneScheduler periodically checks each organization's total omset
-// and sends a notification to owner/admin users when a milestone is reached.
+// OmsetMilestoneScheduler periodically checks each outlet's omset for the
+// current calendar day and sends a notification every time it crosses a new
+// multiple of OmsetMillionRupiah (1 jt, 2 jt, 3 jt, …).
 //
-// NOTE: Milestone tracking is in-memory; notifications may re-trigger after a restart.
-// For persistent tracking, persist the notified state in the database.
+// The notified state is keyed by "outletID:YYYY-MM-DD:N" so each multiple is
+// only notified once per day. State resets naturally on the next day (new key).
+// NOTE: state is in-memory; a server restart within the same day may re-send
+// notifications for already-crossed milestones.
 type OmsetMilestoneScheduler struct {
 	orgRepo          *repository.OrganizationRepositoryImpl
+	outletRepo       *repository.OutletRepositoryImpl
 	userRepo         *repository.UserRepositoryImpl
 	notificationProc processor.NotificationProcessor
 
 	mu       sync.Mutex
-	notified map[string]bool // "orgID:milestone" -> already notified
+	notified map[string]bool // "outletID:YYYY-MM-DD:N" -> already notified
 	stopCh   chan struct{}
 }
 
 func NewOmsetMilestoneScheduler(
 	orgRepo *repository.OrganizationRepositoryImpl,
+	outletRepo *repository.OutletRepositoryImpl,
 	userRepo *repository.UserRepositoryImpl,
 	notificationProc processor.NotificationProcessor,
 ) *OmsetMilestoneScheduler {
 	return &OmsetMilestoneScheduler{
 		orgRepo:          orgRepo,
+		outletRepo:       outletRepo,
 		userRepo:         userRepo,
 		notificationProc: notificationProc,
 		notified:         make(map[string]bool),
@@ -57,8 +63,8 @@ func (s *OmsetMilestoneScheduler) Start(interval time.Duration) {
 	}
 
 	go func() {
-		// Perform an initial check immediately.
-		s.checkAllOrganizations()
+		// Perform an initial check immediately on startup.
+		s.checkAllOutlets()
 
 		ticker := time.NewTicker(interval)
 		defer ticker.Stop()
@@ -66,7 +72,7 @@ func (s *OmsetMilestoneScheduler) Start(interval time.Duration) {
 		for {
 			select {
 			case <-ticker.C:
-				s.checkAllOrganizations()
+				s.checkAllOutlets()
 			case <-s.stopCh:
 				log.Println("Omset milestone scheduler stopped")
 				return
@@ -74,7 +80,7 @@ func (s *OmsetMilestoneScheduler) Start(interval time.Duration) {
 		}
 	}()
 
-	log.Println("Omset milestone scheduler started")
+	log.Printf("Omset milestone scheduler started (interval: %s)", interval)
 }
 
 // Stop signals the scheduler to stop.
@@ -82,7 +88,7 @@ func (s *OmsetMilestoneScheduler) Stop() {
 	close(s.stopCh)
 }
 
-func (s *OmsetMilestoneScheduler) checkAllOrganizations() {
+func (s *OmsetMilestoneScheduler) checkAllOutlets() {
 	ctx := context.Background()
 
 	orgs, _, err := s.orgRepo.List(ctx, nil, 1000, 0)
@@ -92,25 +98,38 @@ func (s *OmsetMilestoneScheduler) checkAllOrganizations() {
 	}
 
 	for _, org := range orgs {
-		s.checkOrganization(ctx, org)
-	}
-}
-
-func (s *OmsetMilestoneScheduler) checkOrganization(ctx context.Context, org *entities.Organization) {
-	totalOmset, err := s.orgRepo.GetTotalOmset(ctx, org.ID)
-	if err != nil {
-		log.Printf("OmsetMilestoneScheduler: failed to get total omset for org %s: %v", org.ID, err)
-		return
-	}
-
-	milestones := []float64{OmsetMillionRupiah}
-
-	for _, milestone := range milestones {
-		if totalOmset < milestone {
+		outlets, err := s.outletRepo.GetByOrganizationID(ctx, org.ID)
+		if err != nil {
+			log.Printf("OmsetMilestoneScheduler: failed to list outlets for org %s: %v", org.ID, err)
 			continue
 		}
 
-		key := fmt.Sprintf("%s:%.0f", org.ID.String(), milestone)
+		for _, outlet := range outlets {
+			if !outlet.IsActive {
+				continue
+			}
+			s.checkOutlet(ctx, org.ID, outlet.ID, outlet.Name)
+		}
+	}
+}
+
+func (s *OmsetMilestoneScheduler) checkOutlet(ctx context.Context, organizationID, outletID uuid.UUID, outletName string) {
+	todayOmset, err := s.outletRepo.GetTodayOmset(ctx, outletID)
+	if err != nil {
+		log.Printf("OmsetMilestoneScheduler: failed to get today's omset for outlet %s: %v", outletID, err)
+		return
+	}
+
+	if todayOmset < OmsetMillionRupiah {
+		return
+	}
+
+	// How many full multiples of 1 juta have been crossed today?
+	crossedMultiple := int(math.Floor(todayOmset / OmsetMillionRupiah))
+	today := time.Now().Format("2006-01-02")
+
+	for n := 1; n <= crossedMultiple; n++ {
+		key := fmt.Sprintf("%s:%s:%d", outletID.String(), today, n)
 
 		s.mu.Lock()
 		if s.notified[key] {
@@ -120,23 +139,31 @@ func (s *OmsetMilestoneScheduler) checkOrganization(ctx context.Context, org *en
 		s.notified[key] = true
 		s.mu.Unlock()
 
-		s.sendMilestoneNotification(ctx, org, totalOmset, milestone)
+		milestone := float64(n) * OmsetMillionRupiah
+		s.sendMilestoneNotification(ctx, organizationID, outletID, outletName, todayOmset, milestone, n)
 	}
 }
 
-func (s *OmsetMilestoneScheduler) sendMilestoneNotification(ctx context.Context, org *entities.Organization, totalOmset float64, milestone float64) {
-	users, err := s.userRepo.GetByOrganizationID(ctx, org.ID)
+func (s *OmsetMilestoneScheduler) sendMilestoneNotification(
+	ctx context.Context,
+	organizationID, outletID uuid.UUID,
+	outletName string,
+	todayOmset, milestone float64,
+	multiple int,
+) {
+	// Fetch all users in the org, then filter to owner and manager only.
+	// These roles are not assigned to a specific outlet, so we query by org.
+	users, err := s.userRepo.GetByOrganizationID(ctx, organizationID)
 	if err != nil {
-		log.Printf("OmsetMilestoneScheduler: failed to get users for org %s: %v", org.ID, err)
+		log.Printf("OmsetMilestoneScheduler: failed to get users for org %s: %v", organizationID, err)
 		return
 	}
 
-	// Notify owner and admin users.
 	var receiverIDs []uuid.UUID
-	for _, user := range users {
-		roleStr := string(user.Role)
-		if roleStr == string(constants.RoleOwner) || roleStr == string(constants.RoleAdmin) {
-			receiverIDs = append(receiverIDs, user.ID)
+	for _, u := range users {
+		role := string(u.Role)
+		if role == string(constants.RoleOwner) || role == string(constants.RoleManager) {
+			receiverIDs = append(receiverIDs, u.ID)
 		}
 	}
 
@@ -144,28 +171,34 @@ func (s *OmsetMilestoneScheduler) sendMilestoneNotification(ctx context.Context,
 		return
 	}
 
-	orgID := org.ID
-	title := "🎉 Selamat! Omset Telah Mencapai 1 Juta Rupiah"
-	body := fmt.Sprintf("Organisasi %s telah mencapai omset Rp %.0f. Terus tingkatkan prestasinya!", org.Name, totalOmset)
+	title := fmt.Sprintf("🎉 Omset %s Hari Ini Mencapai Rp %.0f!", outletName, milestone)
+	body := fmt.Sprintf(
+		"Selamat! Omset outlet %s hari ini sudah menembus Rp %.0f (total hari ini: Rp %.0f). Terus semangat!",
+		outletName, milestone, todayOmset,
+	)
 
 	notifReq := &models.SendNotificationRequest{
 		Title:          title,
 		Body:           body,
 		Type:           "milestone",
 		Category:       "omset_milestone",
-		NotifiableType: "organization",
-		NotifiableID:   &orgID,
+		NotifiableType: "outlet",
+		NotifiableID:   &outletID,
 		ReceiverIDs:    receiverIDs,
 		Data: map[string]interface{}{
-			"organization_id": org.ID.String(),
-			"total_omset":     totalOmset,
+			"organization_id": organizationID.String(),
+			"outlet_id":       outletID.String(),
+			"outlet_name":     outletName,
+			"today_omset":     todayOmset,
 			"milestone":       milestone,
+			"multiple":        multiple,
 		},
 	}
 
 	if _, err := s.notificationProc.Send(ctx, notifReq); err != nil {
-		log.Printf("OmsetMilestoneScheduler: failed to send notification for org %s: %v", org.ID, err)
+		log.Printf("OmsetMilestoneScheduler: failed to send notification for outlet %s: %v", outletID, err)
 	} else {
-		log.Printf("OmsetMilestoneScheduler: sent milestone notification to org %s (omset: %.0f)", org.ID, totalOmset)
+		log.Printf("OmsetMilestoneScheduler: sent milestone x%d (Rp %.0f) for outlet %s (today omset: %.0f)",
+			multiple, milestone, outletName, todayOmset)
 	}
 }

internal/service/order_service.go

@@ -3,6 +3,7 @@ package service
 import (
 	"apskel-pos-be/internal/appcontext"
 	"context"
+	"database/sql"
 	"fmt"
 	"time"
 
@@ -199,7 +200,7 @@ func (s *OrderServiceImpl) createIngredientTransactions(ctx context.Context, ord
 		// Calculate waste quantities
 		transactions, err := s.calculateWasteQuantities(productRecipes, float64(orderItem.Quantity))
 		if err != nil {
-			return nil, fmt.Errorf("failed to calculate waste quantities for product %s: %w", err)
+			return nil, fmt.Errorf("failed to calculate waste quantities for product %s: %w", orderItem.ProductID, err)
 		}
 
 		// Set common fields for all transactions
@@ -228,7 +229,9 @@ func (s *OrderServiceImpl) AddToOrder(ctx context.Context, orderID uuid.UUID, re
 	var response *models.AddToOrderResponse
 	var ingredientTransactions []*contract.CreateOrderIngredientTransactionRequest
 
-	err := s.txManager.WithTransaction(ctx, func(txCtx context.Context) error {
+	err := s.txManager.WithTransactionOptions(ctx, &sql.TxOptions{
+		Isolation: sql.LevelSerializable,
+	}, func(txCtx context.Context) error {
 		addResp, err := s.orderProcessor.AddToOrder(txCtx, orderID, req)
 		if err != nil {
 			return fmt.Errorf("failed to add items to order: %w", err)
@@ -305,8 +308,16 @@ func (s *OrderServiceImpl) VoidOrder(ctx context.Context, req *models.VoidOrderR
 		return fmt.Errorf("invalid user ID")
 	}
 
-	if err := s.orderProcessor.VoidOrder(ctx, req, voidedBy); err != nil {
-		return fmt.Errorf("failed to void order: %w", err)
+	err := s.txManager.WithTransactionOptions(ctx, &sql.TxOptions{
+		Isolation: sql.LevelSerializable,
+	}, func(txCtx context.Context) error {
+		if err := s.orderProcessor.VoidOrder(txCtx, req, voidedBy); err != nil {
+			return fmt.Errorf("failed to void order: %w", err)
+		}
+		return nil
+	})
+	if err != nil {
+		return err
 	}
 
 	if err := s.handleTableReleaseOnVoid(ctx, req.OrderID); err != nil {
@@ -561,9 +572,14 @@ func (s *OrderServiceImpl) validateCreatePaymentRequest(req *models.CreatePaymen
 				return fmt.Errorf("payment item amount must be greater than zero for item %d", i+1)
 			}
 
+			fmt.Printf("[DEBUG] CreatePayment order_id=%s item[%d] order_item_id=%s amount=%.10f\n",
+				req.OrderID, i, item.OrderItemID, item.Amount)
 			totalItemAmount += item.Amount
 		}
 
+		fmt.Printf("[DEBUG] CreatePayment order_id=%s total_amount=%.10f sum_items=%.10f diff=%.10f\n",
+			req.OrderID, req.Amount, totalItemAmount, req.Amount-totalItemAmount)
+
 		if totalItemAmount != req.Amount {
 			return fmt.Errorf("sum of payment item amounts must equal total payment amount")
 		}

internal/service/order_service_table_test.go

@@ -114,6 +114,14 @@ func (m *MockTableRepository) GetByID(ctx context.Context, id uuid.UUID) (*entit
 	return args.Get(0).(*entities.Table), args.Error(1)
 }
 
+func (m *MockTableRepository) GetByToken(ctx context.Context, token string) (*entities.Table, error) {
+	args := m.Called(ctx, token)
+	if args.Get(0) == nil {
+		return nil, args.Error(1)
+	}
+	return args.Get(0).(*entities.Table), args.Error(1)
+}
+
 func (m *MockTableRepository) GetByOutletID(ctx context.Context, outletID uuid.UUID) ([]entities.Table, error) {
 	args := m.Called(ctx, outletID)
 	if args.Get(0) == nil {
@@ -182,6 +190,11 @@ func (m *MockTableRepository) GetByOrderID(ctx context.Context, orderID uuid.UUI
 	return args.Get(0).(*entities.Table), args.Error(1)
 }
 
+func (m *MockTableRepository) UpdateToken(ctx context.Context, tableID uuid.UUID, token string) error {
+	args := m.Called(ctx, tableID, token)
+	return args.Error(0)
+}
+
 func TestCreateOrderWithTableOccupation(t *testing.T) {
 	// Setup
 	ctx := context.Background()

internal/service/product_outlet_price_service.go

@@ -105,9 +105,10 @@ func (s *ProductOutletPriceServiceImpl) BulkUpsert(ctx context.Context, req *con
 	prices := make([]models.CreateProductOutletPriceRequest, len(req.Prices))
 	for i, p := range req.Prices {
 		prices[i] = models.CreateProductOutletPriceRequest{
-			ProductID: req.ProductID,
-			OutletID:  p.OutletID,
-			Price:     p.Price,
+			ProductID:      req.ProductID,
+			OutletID:       p.OutletID,
+			Price:          p.Price,
+			PrintToChecker: p.PrintToChecker,
 		}
 	}