Merge pull request 'fix pointer' (#9) from feature/outlet-table into main

Reviewed-on: #9

.gitignore

@@ -7,4 +7,5 @@ config/env/*
 
 vendor
 
-*firebase-adminsdk*.json
+# Firebase service account credentials
+infra/firebase-service-account.json

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 ./

config/configs.go

@@ -31,7 +31,7 @@ type Config struct {
 	Log      Log      `mapstructure:"log"`
 	S3Config S3Config `mapstructure:"s3"`
 	Fonnte   Fonnte   `mapstructure:"fonnte"`
-	Firebase Firebase `mapstructure:"firebase"`
+	FCM      FCM      `mapstructure:"fcm"`
 }
 
 var (
@@ -97,6 +97,6 @@ func (c *Config) GetFonnte() *Fonnte {
 	return &c.Fonnte
 }
 
-func (c *Config) GetFirebase() *Firebase {
-	return &c.Firebase
+func (c *Config) GetFCM() *FCM {
+	return &c.FCM
 }

config/fcm.go

@@ -0,0 +1,14 @@
+package config
+
+type FCM struct {
+	CredentialsFile string `mapstructure:"credentials_file"`
+	ProjectID       string `mapstructure:"project_id"`
+}
+
+func (f *FCM) GetCredentialsFile() string {
+	return f.CredentialsFile
+}
+
+func (f *FCM) GetProjectID() string {
+	return f.ProjectID
+}

config/firebase.go

@@ -1,9 +0,0 @@
-package config
-
-type Firebase struct {
-	CredentialsFile string `mapstructure:"credentials_file"`
-}
-
-func (f *Firebase) GetCredentialsFile() string {
-	return f.CredentialsFile
-}

config/server.go

@@ -4,4 +4,5 @@ type Server struct {
 	Port         string `mapstructure:"port"`
 	BaseUrl      string `mapstructure:"common-url"`
 	LocalUrl     string `mapstructure:"local-url"`
+	SelfOrderUrl string `mapstructure:"self-order-url"`
 }

go.sum

@@ -351,8 +351,6 @@ github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1
 github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 github.com/zeebo/errs v1.4.0 h1:XNdoD/RRMKP7HD0UhJnIzUy74ISdGGxURlYG8HSWSfM=
 github.com/zeebo/errs v1.4.0/go.mod h1:sgbWHsvVuTPHcqJJGQ1WhI5KbWlHYz+2+2C/LSEtCw4=
-github.com/zeebo/xxh3 v1.1.0 h1:s7DLGDK45Dyfg7++yxI0khrfwq9661w9EN78eP/UZVs=
-github.com/zeebo/xxh3 v1.1.0/go.mod h1:IisAie1LELR4xhVinxWS5+zf1lA4p0MW4T+w+W07F5s=
 go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
 go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
 go.opencensus.io v0.22.2/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
@@ -382,6 +380,7 @@ go.opentelemetry.io/otel/trace v1.35.0/go.mod h1:WUk7DtFp1Aw2MkvqGdwiXYDZZNvA/1J
 go.uber.org/atomic v1.7.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
 go.uber.org/atomic v1.11.0 h1:ZvwS0R+56ePWxUNi+Atn9dWONBPp/AUETXlHW0DxSjE=
 go.uber.org/atomic v1.11.0/go.mod h1:LUxbIzbOniOlMKjJjyPfpl4v+PKK2cNJn91OQbhoJI0=
+go.uber.org/goleak v1.1.11 h1:wy28qYRKZgnJTxGxvye5/wgWr1EKjmUDGYox5mGlRlI=
 go.uber.org/goleak v1.1.11/go.mod h1:cwTWslyiVhfpKIDGSZEM2HlOvcqm+tG4zioyIeLoqMQ=
 go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
 go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=

infra/development.yaml

@@ -1,6 +1,7 @@
 server:
   base-url:
   local-url:
+  self-order-url: http://localhost:5173
   port: 4000
 
 jwt:
@@ -28,7 +29,7 @@ postgresql:
   debug: false
 
 redis:
-  host: 127.0.0.1
+  host: 194.233.78.1
   port: 6379
   password: "CmICdmnX1EZPhVBYzQPEGw==U"
   db: 0
@@ -55,5 +56,6 @@ fonnte:
   token: "bADQrf9NTXfLZQCK2wGg"
   timeout: 30
 
-firebase:
-  credentials_file: "apskel-pos-v2-firebase-adminsdk-fbsvc-ae00499526.json"
+fcm:
+  credentials_file: "infra/firebase-service-account.json"
+  project_id: "apskel-pos-v2"

internal/app/app.go

@@ -30,6 +30,7 @@ type App struct {
 	redisClient    *redis.Client
 	router         *router.Router
 	shutdown       chan os.Signal
+	omsetScheduler *service.OmsetMilestoneScheduler
 }
 
 func NewApp(db *gorm.DB, redisClient *redis.Client) *App {
@@ -43,6 +44,14 @@ func NewApp(db *gorm.DB, redisClient *redis.Client) *App {
 func (a *App) Initialize(cfg *config.Config) error {
 	repos := a.initRepositories()
 	processors := a.initProcessors(cfg, repos)
+
+	// Initialize omset milestone scheduler
+	a.omsetScheduler = service.NewOmsetMilestoneScheduler(
+		repos.organizationRepo,
+		repos.userRepo,
+		processors.notificationProcessor,
+	)
+
 	services := a.initServices(processors, repos, cfg)
 	validators := a.initValidators()
 	middleware := a.initMiddleware(services, cfg)
@@ -56,7 +65,7 @@ func (a *App) Initialize(cfg *config.Config) error {
 		repos.userRepo,
 		repos.sessionRepo,
 		repos.orderRepo,
-		processors.fcmClient,
+		services.productOutletPriceService,
 	)
 
 	a.router = router.NewRouter(
@@ -119,6 +128,12 @@ func (a *App) Initialize(cfg *config.Config) error {
 		services.customerPointsService,
 		services.spinGameService,
 		middleware.customerAuthMiddleware,
+		services.userDeviceService,
+		validators.userDeviceValidator,
+		services.notificationService,
+		validators.notificationValidator,
+		services.productOutletPriceService,
+		validators.productOutletPriceValidator,
 		selfOrderHandler,
 	)
 
@@ -126,6 +141,11 @@ func (a *App) Initialize(cfg *config.Config) error {
 }
 
 func (a *App) Start(port string) error {
+	// Start the omset milestone scheduler (checks every hour)
+	if a.omsetScheduler != nil {
+		a.omsetScheduler.Start(1 * time.Hour)
+	}
+
 	engine := a.router.Init()
 
 	a.server = &http.Server{
@@ -161,6 +181,9 @@ func (a *App) Start(port string) error {
 }
 
 func (a *App) Shutdown() {
+	if a.omsetScheduler != nil {
+		a.omsetScheduler.Stop()
+	}
 	close(a.shutdown)
 }
 
@@ -208,6 +231,11 @@ type repositories struct {
 	otpRepo                        repository.OtpRepository
 	sessionRepo                    repository.SessionRepository
 	txManager                      *repository.TxManager
+	userDeviceRepo                 *repository.UserDeviceRepositoryImpl
+	notificationRepo               *repository.NotificationRepositoryImpl
+	notificationReceiverRepo       *repository.NotificationReceiverRepositoryImpl
+	notificationDeliveryRepo       *repository.NotificationDeliveryRepositoryImpl
+	productOutletPriceRepo         *repository.ProductOutletPriceRepositoryImpl
 }
 
 func (a *App) initRepositories() *repositories {
@@ -255,6 +283,11 @@ func (a *App) initRepositories() *repositories {
 		otpRepo:                        repository.NewOtpRepository(a.db),
 		sessionRepo:                    repository.NewSessionRepository(a.redisClient),
 		txManager:                      repository.NewTxManager(a.db),
+		userDeviceRepo:                 repository.NewUserDeviceRepositoryImpl(a.db),
+		notificationRepo:               repository.NewNotificationRepository(a.db),
+		notificationReceiverRepo:       repository.NewNotificationReceiverRepository(a.db),
+		notificationDeliveryRepo:       repository.NewNotificationDeliveryRepository(a.db),
+		productOutletPriceRepo:         repository.NewProductOutletPriceRepositoryImpl(a.db),
 	}
 }
 
@@ -296,14 +329,15 @@ type processors struct {
 	customerPointsProcessor             *processor.CustomerPointsProcessor
 	otpProcessor                        processor.OtpProcessor
 	fileClient                          processor.FileClient
-	fcmClient                           client.FcmClient
 	inventoryMovementService            service.InventoryMovementService
+	userDeviceProcessor                 *processor.UserDeviceProcessorImpl
+	notificationProcessor               *processor.NotificationProcessorImpl
+	productOutletPriceProcessor         processor.ProductOutletPriceProcessor
 }
 
 func (a *App) initProcessors(cfg *config.Config, repos *repositories) *processors {
 	fileClient := client.NewFileClient(cfg.S3Config)
 	fonnteClient := client.NewFonnteClient(cfg.GetFonnte())
-	fcmClient := client.NewFcmClient(cfg.GetFirebase())
 	otpProcessor := processor.NewOtpProcessor(fonnteClient, repos.otpRepo)
 	inventoryMovementService := service.NewInventoryMovementService(repos.inventoryMovementRepo, repos.ingredientRepo)
 
@@ -313,10 +347,10 @@ func (a *App) initProcessors(cfg *config.Config, repos *repositories) *processor
 		outletProcessor:                     processor.NewOutletProcessorImpl(repos.outletRepo),
 		outletSettingProcessor:              processor.NewOutletSettingProcessorImpl(repos.outletSettingRepo, repos.outletRepo),
 		categoryProcessor:                   processor.NewCategoryProcessorImpl(repos.categoryRepo),
-		productProcessor:                    processor.NewProductProcessorImpl(repos.productRepo, repos.categoryRepo, repos.productVariantRepo, repos.inventoryRepo, repos.outletRepo),
+		productProcessor:                    processor.NewProductProcessorImpl(repos.productRepo, repos.categoryRepo, repos.productVariantRepo, repos.inventoryRepo, repos.outletRepo, repos.productOutletPriceRepo),
 		productVariantProcessor:             processor.NewProductVariantProcessorImpl(repos.productVariantRepo, repos.productRepo),
 		inventoryProcessor:                  processor.NewInventoryProcessorImpl(repos.inventoryRepo, repos.productRepo, repos.outletRepo, repos.ingredientRepo, repos.inventoryMovementRepo),
-		orderProcessor:                      processor.NewOrderProcessorImpl(repos.orderRepo, repos.orderItemRepo, repos.paymentRepo, repos.paymentOrderItemRepo, repos.productRepo, repos.paymentMethodRepo, repos.inventoryRepo, repos.inventoryMovementRepo, repos.productVariantRepo, repos.outletRepo, repos.customerRepo, repos.txManager, repos.productRecipeRepo, repos.ingredientRepo, inventoryMovementService),
+		orderProcessor:                      processor.NewOrderProcessorImpl(repos.orderRepo, repos.orderItemRepo, repos.paymentRepo, repos.paymentOrderItemRepo, repos.productRepo, repos.paymentMethodRepo, repos.inventoryRepo, repos.inventoryMovementRepo, repos.productVariantRepo, repos.outletRepo, repos.customerRepo, repos.txManager, repos.productRecipeRepo, repos.ingredientRepo, inventoryMovementService, repos.productOutletPriceRepo),
 		paymentMethodProcessor:              processor.NewPaymentMethodProcessorImpl(repos.paymentMethodRepo),
 		fileProcessor:                       processor.NewFileProcessorImpl(repos.fileRepo, fileClient),
 		customerProcessor:                   processor.NewCustomerProcessor(repos.customerRepo),
@@ -345,8 +379,10 @@ func (a *App) initProcessors(cfg *config.Config, repos *repositories) *processor
 		customerPointsProcessor:             processor.NewCustomerPointsProcessor(repos.customerPointsRepo, repos.gameRepo),
 		otpProcessor:                        otpProcessor,
 		fileClient:                          fileClient,
-		fcmClient:                           fcmClient,
 		inventoryMovementService:            inventoryMovementService,
+		userDeviceProcessor:                 processor.NewUserDeviceProcessorImpl(repos.userDeviceRepo),
+		notificationProcessor:               buildNotificationProcessor(cfg, repos),
+		productOutletPriceProcessor:         processor.NewProductOutletPriceProcessorImpl(repos.productOutletPriceRepo, repos.productRepo, repos.outletRepo),
 	}
 }
 
@@ -383,11 +419,14 @@ type services struct {
 	customerAuthService               service.CustomerAuthService
 	customerPointsService             service.CustomerPointsService
 	spinGameService                   service.SpinGameService
+	userDeviceService                 service.UserDeviceService
+	notificationService               service.NotificationService
+	productOutletPriceService         service.ProductOutletPriceService
 }
 
 func (a *App) initServices(processors *processors, repos *repositories, cfg *config.Config) *services {
 	authConfig := cfg.Auth()
-	authService := service.NewAuthService(processors.userProcessor, authConfig)
+	authService := service.NewAuthService(processors.userProcessor, processors.userDeviceProcessor, authConfig)
 	organizationService := service.NewOrganizationService(processors.organizationProcessor)
 	outletService := service.NewOutletService(processors.outletProcessor)
 	outletSettingService := service.NewOutletSettingService(processors.outletSettingProcessor)
@@ -395,7 +434,7 @@ func (a *App) initServices(processors *processors, repos *repositories, cfg *con
 	productService := service.NewProductService(processors.productProcessor)
 	productVariantService := service.NewProductVariantService(processors.productVariantProcessor)
 	inventoryService := service.NewInventoryService(processors.inventoryProcessor)
-	orderService := service.NewOrderServiceImpl(processors.orderProcessor, repos.tableRepo, nil, processors.orderIngredientTransactionProcessor, *repos.productRecipeRepo, repos.txManager, repos.sessionRepo) // Will be updated after orderIngredientTransactionService is created
+	orderService := service.NewOrderServiceImpl(processors.orderProcessor, repos.tableRepo, nil, processors.orderIngredientTransactionProcessor, *repos.productRecipeRepo, repos.txManager, repos.sessionRepo, processors.notificationProcessor, repos.userRepo) // Will be updated after orderIngredientTransactionService is created
 	paymentMethodService := service.NewPaymentMethodService(processors.paymentMethodProcessor)
 	fileService := service.NewFileServiceImpl(processors.fileProcessor)
 	var customerService service.CustomerService = service.NewCustomerService(processors.customerProcessor)
@@ -418,9 +457,11 @@ func (a *App) initServices(processors *processors, repos *repositories, cfg *con
 	customerAuthService := service.NewCustomerAuthService(processors.customerAuthProcessor)
 	customerPointsService := service.NewCustomerPointsService(processors.customerPointsProcessor)
 	spinGameService := service.NewSpinGameService(processors.gamePlayProcessor, repos.txManager)
+	userDeviceService := service.NewUserDeviceService(processors.userDeviceProcessor)
+	notificationService := service.NewNotificationService(processors.notificationProcessor)
 
 	// Update order service with order ingredient transaction service
-	orderService = service.NewOrderServiceImpl(processors.orderProcessor, repos.tableRepo, orderIngredientTransactionService, processors.orderIngredientTransactionProcessor, *repos.productRecipeRepo, repos.txManager, repos.sessionRepo)
+	orderService = service.NewOrderServiceImpl(processors.orderProcessor, repos.tableRepo, orderIngredientTransactionService, processors.orderIngredientTransactionProcessor, *repos.productRecipeRepo, repos.txManager, repos.sessionRepo, processors.notificationProcessor, repos.userRepo)
 
 	return &services{
 		userService:                       service.NewUserService(processors.userProcessor),
@@ -455,6 +496,9 @@ func (a *App) initServices(processors *processors, repos *repositories, cfg *con
 		customerAuthService:               customerAuthService,
 		customerPointsService:             customerPointsService,
 		spinGameService:                   spinGameService,
+		userDeviceService:                 userDeviceService,
+		notificationService:               notificationService,
+		productOutletPriceService:         service.NewProductOutletPriceService(processors.productOutletPriceProcessor),
 	}
 }
 
@@ -494,6 +538,9 @@ type validators struct {
 	rewardValidator                     validator.RewardValidator
 	campaignValidator                   validator.CampaignValidator
 	customerAuthValidator               validator.CustomerAuthValidator
+	userDeviceValidator                 *validator.UserDeviceValidatorImpl
+	notificationValidator               *validator.NotificationValidatorImpl
+	productOutletPriceValidator         *validator.ProductOutletPriceValidatorImpl
 }
 
 func (a *App) initValidators() *validators {
@@ -521,5 +568,31 @@ func (a *App) initValidators() *validators {
 		rewardValidator:                     validator.NewRewardValidator(),
 		campaignValidator:                   validator.NewCampaignValidator(),
 		customerAuthValidator:               validator.NewCustomerAuthValidator(),
+		userDeviceValidator:                 validator.NewUserDeviceValidator(),
+		notificationValidator:               validator.NewNotificationValidator(),
+		productOutletPriceValidator:         validator.NewProductOutletPriceValidator(),
 	}
 }
+
+// buildNotificationProcessor creates the notification processor with FCM integration.
+// If FCM is not configured, it returns a processor with a nil FCM client (FCM dispatch will be skipped).
+func buildNotificationProcessor(cfg *config.Config, repos *repositories) *processor.NotificationProcessorImpl {
+	var fcmClient client.FCMClient
+	if cfg.FCM.CredentialsFile != "" {
+		var err error
+		fcmClient, err = client.NewFCMClient(&cfg.FCM)
+		if err != nil {
+			// FCM init failure is non-fatal; notifications will still be persisted.
+			fcmClient = nil
+		}
+	}
+
+	return processor.NewNotificationProcessor(
+		repos.notificationRepo,
+		repos.notificationReceiverRepo,
+		repos.notificationDeliveryRepo,
+		repos.userDeviceRepo,
+		repos.userRepo,
+		fcmClient,
+	)
+}

internal/client/fcm_client.go

@@ -3,81 +3,140 @@ package client
 import (
 	"context"
 	"fmt"
-	"log"
-
-	"apskel-pos-be/config"
 
 	firebase "firebase.google.com/go/v4"
 	"firebase.google.com/go/v4/messaging"
 	"google.golang.org/api/option"
 )
 
-type FcmClient interface {
-	SendMulticastNotification(ctx context.Context, tokens []string, title string, body string) error
+type FCMConfig interface {
+	GetCredentialsFile() string
+	GetProjectID() string
+}
+
+type FCMClient interface {
+	SendNotification(ctx context.Context, token string, title string, body string, data map[string]string) error
+	SendMulticastNotification(ctx context.Context, tokens []string, title string, body string, data map[string]string) error
+	SendToTopic(ctx context.Context, topic string, title string, body string, data map[string]string) error
 }
 
 type fcmClient struct {
-	messagingClient *messaging.Client
+	messaging *messaging.Client
 }
 
-func NewFcmClient(cfg *config.Firebase) FcmClient {
-	if cfg == nil || cfg.GetCredentialsFile() == "" {
-		log.Println("FCM: credentials file not configured, FCM client is disabled")
-		return &fcmClient{messagingClient: nil}
-	}
+func NewFCMClient(cfg FCMConfig) (FCMClient, error) {
+	ctx := context.Background()
 
 	opt := option.WithCredentialsFile(cfg.GetCredentialsFile())
-	app, err := firebase.NewApp(context.Background(), nil, opt)
+
+	app, err := firebase.NewApp(ctx, &firebase.Config{
+		ProjectID: cfg.GetProjectID(),
+	}, opt)
 	if err != nil {
-		log.Printf("FCM: failed to initialize Firebase app: %v", err)
-		return &fcmClient{messagingClient: nil}
+		return nil, fmt.Errorf("failed to initialize firebase app: %w", err)
 	}
 
-	client, err := app.Messaging(context.Background())
+	msgClient, err := app.Messaging(ctx)
 	if err != nil {
-		log.Printf("FCM: failed to create messaging client: %v", err)
-		return &fcmClient{messagingClient: nil}
+		return nil, fmt.Errorf("failed to initialize firebase messaging client: %w", err)
 	}
 
-	log.Println("FCM: client initialized successfully")
-	return &fcmClient{messagingClient: client}
+	return &fcmClient{
+		messaging: msgClient,
+	}, nil
+}
+
+// SendNotification sends a push notification to a single device token.
+func (f *fcmClient) SendNotification(ctx context.Context, token string, title string, body string, data map[string]string) error {
+	message := &messaging.Message{
+		Token: token,
+		Notification: &messaging.Notification{
+			Title: title,
+			Body:  body,
+		},
+		Data: data,
+		Android: &messaging.AndroidConfig{
+			Priority: "high",
+		},
+		APNS: &messaging.APNSConfig{
+			Payload: &messaging.APNSPayload{
+				Aps: &messaging.Aps{
+					Sound: "default",
+				},
+			},
+		},
+	}
+
+	_, err := f.messaging.Send(ctx, message)
+	if err != nil {
+		return fmt.Errorf("failed to send FCM notification: %w", err)
 	}
 
-func (c *fcmClient) SendMulticastNotification(ctx context.Context, tokens []string, title string, body string) error {
-	if c.messagingClient == nil {
-		log.Println("FCM: client not initialized, skipping notification")
 	return nil
 }
 
+// SendMulticastNotification sends a push notification to multiple device tokens.
+func (f *fcmClient) SendMulticastNotification(ctx context.Context, tokens []string, title string, body string, data map[string]string) error {
 	if len(tokens) == 0 {
 		return nil
 	}
 
 	message := &messaging.MulticastMessage{
+		Tokens: tokens,
 		Notification: &messaging.Notification{
 			Title: title,
 			Body:  body,
 		},
-		Tokens: tokens,
+		Data: data,
 		Android: &messaging.AndroidConfig{
 			Priority: "high",
 		},
+		APNS: &messaging.APNSConfig{
+			Payload: &messaging.APNSPayload{
+				Aps: &messaging.Aps{
+					Sound: "default",
+				},
+			},
+		},
 	}
 
-	response, err := c.messagingClient.SendMulticast(ctx, message)
+	batchResp, err := f.messaging.SendEachForMulticast(ctx, message)
 	if err != nil {
-		return fmt.Errorf("FCM: failed to send multicast notification: %w", err)
+		return fmt.Errorf("failed to send FCM multicast notification: %w", err)
 	}
 
-	if response.FailureCount > 0 {
-		log.Printf("FCM: %d tokens failed out of %d", response.FailureCount, len(tokens))
-		for i, resp := range response.Responses {
-			if !resp.Success {
-				log.Printf("FCM: token[%d] failed: %v", i, resp.Error)
-			}
-		}
+	if batchResp.FailureCount > 0 {
+		return fmt.Errorf("FCM multicast: %d/%d messages failed to send", batchResp.FailureCount, len(tokens))
+	}
+
+	return nil
+}
+
+// SendToTopic sends a push notification to all devices subscribed to a topic.
+func (f *fcmClient) SendToTopic(ctx context.Context, topic string, title string, body string, data map[string]string) error {
+	message := &messaging.Message{
+		Topic: topic,
+		Notification: &messaging.Notification{
+			Title: title,
+			Body:  body,
+		},
+		Data: data,
+		Android: &messaging.AndroidConfig{
+			Priority: "high",
+		},
+		APNS: &messaging.APNSConfig{
+			Payload: &messaging.APNSPayload{
+				Aps: &messaging.Aps{
+					Sound: "default",
+				},
+			},
+		},
+	}
+
+	_, err := f.messaging.Send(ctx, message)
+	if err != nil {
+		return fmt.Errorf("failed to send FCM topic notification: %w", err)
 	}
 
-	log.Printf("FCM: sent %d/%d notifications successfully", response.SuccessCount, len(tokens))
 	return nil
 }

internal/constants/error.go

@@ -56,6 +56,10 @@ const (
 	CampaignRuleEntity              = "campaign_rule"
 	CustomerEntity                  = "customer"
 	SpinGameHandlerEntity           = "spin_game_handler"
+	UserDeviceServiceEntity         = "user_device_service"
+	NotificationServiceEntity       = "notification_service"
+	NotificationHandlerEntity       = "notification_handler"
+	ProductOutletPriceServiceEntity = "product_outlet_price_service"
 )
 
 var HttpErrorMap = map[string]int{

internal/constants/user.go

@@ -7,6 +7,7 @@ const (
 	RoleManager UserRole = "manager"
 	RoleCashier UserRole = "cashier"
 	RoleWaiter  UserRole = "waiter"
+	RoleOwner   UserRole = "owner"
 )
 
 func GetAllUserRoles() []UserRole {
@@ -15,6 +16,7 @@ func GetAllUserRoles() []UserRole {
 		RoleManager,
 		RoleCashier,
 		RoleWaiter,
+		RoleOwner,
 	}
 }
 

internal/contract/analytics_contract.go

@@ -8,7 +8,7 @@ import (
 
 type PaymentMethodAnalyticsRequest struct {
 	OrganizationID uuid.UUID `form:"organization_id"`
-	OutletID       *uuid.UUID `form:"outlet_id,omitempty"`
+	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"`
@@ -45,7 +45,7 @@ type PaymentMethodAnalyticsData struct {
 
 type SalesAnalyticsRequest struct {
 	OrganizationID uuid.UUID
-	OutletID       *uuid.UUID `form:"outlet_id,omitempty"`
+	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"`
@@ -86,7 +86,7 @@ type SalesAnalyticsData struct {
 // ProductAnalyticsRequest represents the request for product analytics
 type ProductAnalyticsRequest struct {
 	OrganizationID uuid.UUID
-	OutletID       *uuid.UUID `form:"outlet_id,omitempty"`
+	OutletID       *string `form:"outlet_id,omitempty"`
 	DateFrom       string  `form:"date_from" validate:"required"`
 	DateTo         string  `form:"date_to" validate:"required"`
 	Limit          int     `form:"limit,default=1000" validate:"min=1,max=1000"`
@@ -123,7 +123,7 @@ type ProductAnalyticsData struct {
 // ProductAnalyticsPerCategoryRequest represents the request for product analytics per category
 type ProductAnalyticsPerCategoryRequest struct {
 	OrganizationID uuid.UUID
-	OutletID       *uuid.UUID `form:"outlet_id,omitempty"`
+	OutletID       *string `form:"outlet_id,omitempty"`
 	DateFrom       string  `form:"date_from" validate:"required"`
 	DateTo         string  `form:"date_to" validate:"required"`
 }
@@ -152,7 +152,7 @@ type ProductAnalyticsPerCategoryData struct {
 // DashboardAnalyticsRequest represents the request for dashboard analytics
 type DashboardAnalyticsRequest struct {
 	OrganizationID uuid.UUID
-	OutletID       *uuid.UUID `form:"outlet_id,omitempty"`
+	OutletID       *string `form:"outlet_id,omitempty"`
 	DateFrom       string  `form:"date_from" validate:"required"`
 	DateTo         string  `form:"date_to" validate:"required"`
 }
@@ -182,7 +182,7 @@ type DashboardOverview struct {
 // ProfitLossAnalyticsRequest represents the request for profit and loss analytics
 type ProfitLossAnalyticsRequest struct {
 	OrganizationID uuid.UUID
-	OutletID       *uuid.UUID `form:"outlet_id,omitempty"`
+	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"`

internal/contract/notification_contract.go

@@ -0,0 +1,92 @@
+package contract
+
+import (
+	"time"
+
+	"apskel-pos-be/internal/entities"
+
+	"github.com/google/uuid"
+)
+
+// ---- Request contracts ----
+
+type SendNotificationRequest struct {
+	Title          string                        `json:"title" validate:"required,min=1,max=255"`
+	Body           string                        `json:"body" validate:"required"`
+	Type           string                        `json:"type,omitempty" validate:"omitempty,max=100"`
+	Category       string                        `json:"category,omitempty" validate:"omitempty,max=100"`
+	Priority       entities.NotificationPriority `json:"priority,omitempty" validate:"omitempty,oneof=low normal high"`
+	ImageURL       string                        `json:"image_url,omitempty" validate:"omitempty,max=512"`
+	ActionURL      string                        `json:"action_url,omitempty" validate:"omitempty,max=512"`
+	NotifiableType string                        `json:"notifiable_type,omitempty" validate:"omitempty,max=100"`
+	NotifiableID   *uuid.UUID                    `json:"notifiable_id,omitempty"`
+	Data           map[string]interface{}        `json:"data,omitempty"`
+	ReceiverIDs    []uuid.UUID                   `json:"receiver_ids" validate:"required,min=1"`
+	ScheduledAt    *time.Time                    `json:"scheduled_at,omitempty"`
+	ExpiredAt      *time.Time                    `json:"expired_at,omitempty"`
+}
+
+type BroadcastNotificationRequest struct {
+	Title          string                        `json:"title" validate:"required,min=1,max=255"`
+	Body           string                        `json:"body" validate:"required"`
+	Type           string                        `json:"type,omitempty" validate:"omitempty,max=100"`
+	Category       string                        `json:"category,omitempty" validate:"omitempty,max=100"`
+	Priority       entities.NotificationPriority `json:"priority,omitempty" validate:"omitempty,oneof=low normal high"`
+	ImageURL       string                        `json:"image_url,omitempty" validate:"omitempty,max=512"`
+	ActionURL      string                        `json:"action_url,omitempty" validate:"omitempty,max=512"`
+	NotifiableType string                        `json:"notifiable_type,omitempty" validate:"omitempty,max=100"`
+	NotifiableID   *uuid.UUID                    `json:"notifiable_id,omitempty"`
+	Data           map[string]interface{}        `json:"data,omitempty"`
+	ScheduledAt    *time.Time                    `json:"scheduled_at,omitempty"`
+	ExpiredAt      *time.Time                    `json:"expired_at,omitempty"`
+}
+
+type ListNotificationsRequest struct {
+	Page   int   `form:"page" validate:"min=1"`
+	Limit  int   `form:"limit" validate:"min=1,max=100"`
+	IsRead *bool `form:"is_read"`
+}
+
+// ---- Response contracts ----
+
+type NotificationResponse struct {
+	ID             uuid.UUID                     `json:"id"`
+	Title          string                        `json:"title"`
+	Body           string                        `json:"body"`
+	Type           string                        `json:"type"`
+	Category       string                        `json:"category"`
+	Priority       entities.NotificationPriority `json:"priority"`
+	ImageURL       string                        `json:"image_url"`
+	ActionURL      string                        `json:"action_url"`
+	NotifiableType string                        `json:"notifiable_type"`
+	NotifiableID   *uuid.UUID                    `json:"notifiable_id"`
+	Data           map[string]interface{}        `json:"data"`
+	ScheduledAt    *time.Time                    `json:"scheduled_at"`
+	SentAt         *time.Time                    `json:"sent_at"`
+	ExpiredAt      *time.Time                    `json:"expired_at"`
+	CreatedBy      *uuid.UUID                    `json:"created_by"`
+	CreatedAt      time.Time                     `json:"created_at"`
+	UpdatedAt      time.Time                     `json:"updated_at"`
+}
+
+type NotificationReceiverResponse struct {
+	ID             uuid.UUID             `json:"id"`
+	NotificationID uuid.UUID             `json:"notification_id"`
+	UserID         uuid.UUID             `json:"user_id"`
+	IsRead         bool                  `json:"is_read"`
+	ReadAt         *time.Time            `json:"read_at"`
+	IsDeleted      bool                  `json:"is_deleted"`
+	DeletedAt      *time.Time            `json:"deleted_at"`
+	CreatedAt      time.Time             `json:"created_at"`
+	UpdatedAt      time.Time             `json:"updated_at"`
+	Notification   *NotificationResponse `json:"notification,omitempty"`
+}
+
+type ListNotificationsResponse struct {
+	Notifications []*NotificationReceiverResponse `json:"notifications"`
+	TotalCount    int64                           `json:"total_count"`
+	UnreadCount   int64                           `json:"unread_count"`
+	Page          int                             `json:"page"`
+	Limit         int                             `json:"limit"`
+	TotalPages    int                             `json:"total_pages"`
+}

internal/contract/product_contract.go

@@ -64,6 +64,8 @@ type ProductResponse struct {
 	Name           string                       `json:"name"`
 	Description    *string                      `json:"description"`
 	Price          float64                      `json:"price"`
+	OutletPrice    *float64                     `json:"outlet_price,omitempty"`
+	OutletPrices   []ProductOutletPriceResponse `json:"outlet_prices,omitempty"`
 	Cost           float64                      `json:"cost"`
 	BusinessType   string                       `json:"business_type"`
 	ImageURL       *string                      `json:"image_url"`
@@ -89,6 +91,7 @@ type ProductVariantResponse struct {
 
 type ListProductsRequest struct {
 	OrganizationID *uuid.UUID `json:"organization_id,omitempty"`
+	OutletID       *uuid.UUID `json:"outlet_id,omitempty"`
 	CategoryID     *uuid.UUID `json:"category_id,omitempty"`
 	BusinessType   string     `json:"business_type,omitempty"`
 	IsActive       *bool      `json:"is_active,omitempty"`

internal/contract/product_outlet_price_contract.go

@@ -0,0 +1,42 @@
+package contract
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+)
+
+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"`
+}
+
+type UpdateProductOutletPriceRequest struct {
+	Price float64 `json:"price" validate:"required,min=0"`
+}
+
+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"`
+}
+
+type ListProductOutletPricesResponse struct {
+	Prices     []ProductOutletPriceResponse `json:"prices"`
+	TotalCount int                          `json:"total_count"`
+}
+
+type BulkCreateProductOutletPriceRequest struct {
+	ProductID uuid.UUID                                  `json:"product_id" validate:"required"`
+	Prices    []CreateProductOutletPricePerOutletRequest `json:"prices" validate:"required,dive"`
+}
+
+type CreateProductOutletPricePerOutletRequest struct {
+	OutletID uuid.UUID `json:"outlet_id" validate:"required"`
+	Price    float64   `json:"price" validate:"required,min=0"`
+}

internal/contract/self_order_contract.go

@@ -1,8 +1,6 @@
 package contract
 
 import (
-	"time"
-
 	"github.com/google/uuid"
 )
 
@@ -51,6 +49,8 @@ type SelfOrderMenuVariant struct {
 
 type SelfOrderCreateOrderRequest struct {
 	SessionID    string                     `json:"session_id" validate:"required"`
+	CustomerName string                     `json:"customer_name" validate:"required"`
+	OrderType    string                     `json:"order_type" validate:"required,oneof=dine_in takeaway delivery"`
 	OrderItems   []SelfOrderCreateOrderItem `json:"order_items" validate:"required,min=1,dive"`
 }
 
@@ -62,7 +62,7 @@ type SelfOrderCreateOrderItem struct {
 }
 
 type SelfOrderListCategoriesRequest struct {
-	OrganizationID string `form:"organisasi_id" validate:"required"`
+	OrganizationID string `form:"organization_id" validate:"required"`
 	OutletID       string `form:"outlet_id" validate:"required"`
 }
 
@@ -78,35 +78,5 @@ type SelfOrderListCategoriesResponse struct {
 }
 
 type SelfOrderListOrdersResponse struct {
-	Orders []SelfOrderOrderItem `json:"orders"`
-}
-
-type SelfOrderOrderItem struct {
-	ID              uuid.UUID                `json:"id"`
-	OrderNumber     string                   `json:"order_number"`
-	TableNumber     *string                  `json:"table_number,omitempty"`
-	OrderType       string                   `json:"order_type"`
-	Status          string                   `json:"status"`
-	Subtotal        float64                  `json:"subtotal"`
-	TaxAmount       float64                  `json:"tax_amount"`
-	DiscountAmount  float64                  `json:"discount_amount"`
-	TotalAmount     float64                  `json:"total_amount"`
-	RemainingAmount float64                  `json:"remaining_amount"`
-	PaymentStatus   string                   `json:"payment_status"`
-	IsVoid          bool                     `json:"is_void"`
-	IsRefund        bool                     `json:"is_refund"`
-	Items           []SelfOrderOrderLineItem `json:"items,omitempty"`
-	CreatedAt       time.Time                `json:"created_at"`
-}
-
-type SelfOrderOrderLineItem struct {
-	ProductID         uuid.UUID  `json:"product_id"`
-	ProductName       string     `json:"product_name"`
-	ProductVariantID  *uuid.UUID `json:"product_variant_id,omitempty"`
-	ProductVariantNam *string    `json:"product_variant_name,omitempty"`
-	Quantity          int        `json:"quantity"`
-	UnitPrice         float64    `json:"unit_price"`
-	TotalPrice        float64    `json:"total_price"`
-	Notes             *string    `json:"notes,omitempty"`
-	Status            string     `json:"status"`
+	Orders []OrderResponse `json:"orders"`
 }

internal/contract/user_contract.go

@@ -37,7 +37,13 @@ type UpdateUserOutletRequest struct {
 type LoginRequest struct {
 	Email      string `json:"email" validate:"required,email"`
 	Password   string `json:"password" validate:"required"`
-	FcmToken *string `json:"fcm_token,omitempty"`
+	DeviceID   string `json:"device_id,omitempty"`
+	DeviceName string `json:"device_name,omitempty"`
+	DeviceType string `json:"device_type,omitempty"`
+	Platform   string `json:"platform,omitempty"`
+	FCMToken   string `json:"fcm_token,omitempty"`
+	AppVersion string `json:"app_version,omitempty"`
+	OsVersion  string `json:"os_version,omitempty"`
 }
 
 type LoginResponse struct {

internal/contract/user_device_contract.go

@@ -0,0 +1,59 @@
+package contract
+
+import (
+	"time"
+
+	"apskel-pos-be/internal/entities"
+
+	"github.com/google/uuid"
+)
+
+type RegisterUserDeviceRequest struct {
+	DeviceID   string                  `json:"device_id" validate:"required,min=1,max=255"`
+	DeviceName string                  `json:"device_name,omitempty" validate:"omitempty,max=255"`
+	DeviceType entities.DeviceType     `json:"device_type,omitempty" validate:"omitempty,oneof=mobile tablet desktop"`
+	Platform   entities.DevicePlatform `json:"platform,omitempty" validate:"omitempty,oneof=android ios web"`
+	FCMToken   string                  `json:"fcm_token,omitempty" validate:"omitempty,max=512"`
+	AppVersion string                  `json:"app_version,omitempty" validate:"omitempty,max=50"`
+	OsVersion  string                  `json:"os_version,omitempty" validate:"omitempty,max=50"`
+}
+
+type UpdateUserDeviceRequest struct {
+	DeviceName string                  `json:"device_name,omitempty" validate:"omitempty,max=255"`
+	DeviceType entities.DeviceType     `json:"device_type,omitempty" validate:"omitempty,oneof=mobile tablet desktop"`
+	Platform   entities.DevicePlatform `json:"platform,omitempty" validate:"omitempty,oneof=android ios web"`
+	FCMToken   string                  `json:"fcm_token,omitempty" validate:"omitempty,max=512"`
+	AppVersion string                  `json:"app_version,omitempty" validate:"omitempty,max=50"`
+	OsVersion  string                  `json:"os_version,omitempty" validate:"omitempty,max=50"`
+}
+
+type UserDeviceResponse struct {
+	ID           uuid.UUID               `json:"id"`
+	UserID       uuid.UUID               `json:"user_id"`
+	DeviceID     string                  `json:"device_id"`
+	DeviceName   string                  `json:"device_name"`
+	DeviceType   entities.DeviceType     `json:"device_type"`
+	Platform     entities.DevicePlatform `json:"platform"`
+	FCMToken     string                  `json:"fcm_token"`
+	AppVersion   string                  `json:"app_version"`
+	OsVersion    string                  `json:"os_version"`
+	IPAddress    string                  `json:"ip_address"`
+	LastActiveAt *time.Time              `json:"last_active_at"`
+	CreatedAt    time.Time               `json:"created_at"`
+	UpdatedAt    time.Time               `json:"updated_at"`
+}
+
+type ListUserDevicesRequest struct {
+	Page     int    `json:"page" validate:"min=1"`
+	Limit    int    `json:"limit" validate:"min=1,max=100"`
+	UserID   string `json:"user_id,omitempty"`
+	Platform string `json:"platform,omitempty"`
+}
+
+type ListUserDevicesResponse struct {
+	Devices    []UserDeviceResponse `json:"devices"`
+	TotalCount int                  `json:"total_count"`
+	Page       int                  `json:"page"`
+	Limit      int                  `json:"limit"`
+	TotalPages int                  `json:"total_pages"`
+}

internal/entities/entities.go

@@ -36,6 +36,12 @@ func GetAllEntities() []interface{} {
 		&CampaignRule{},
 		&OtpSession{},
 		// Analytics entities are not database tables, they are query results
+		&UserDevice{},
+		// Notification entities
+		&Notification{},
+		&NotificationReceiver{},
+		&NotificationDelivery{},
+		&ProductOutletPrice{},
 	}
 }
 

internal/entities/notification.go

@@ -0,0 +1,150 @@
+package entities
+
+import (
+	"database/sql/driver"
+	"encoding/json"
+	"errors"
+	"time"
+
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+)
+
+type NotificationPriority string
+type NotificationDeliveryStatus string
+type NotificationChannel string
+type NotificationProvider string
+
+const (
+	NotificationPriorityLow    NotificationPriority = "low"
+	NotificationPriorityNormal NotificationPriority = "normal"
+	NotificationPriorityHigh   NotificationPriority = "high"
+
+	NotificationDeliveryStatusPending   NotificationDeliveryStatus = "pending"
+	NotificationDeliveryStatusSent      NotificationDeliveryStatus = "sent"
+	NotificationDeliveryStatusDelivered NotificationDeliveryStatus = "delivered"
+	NotificationDeliveryStatusFailed    NotificationDeliveryStatus = "failed"
+
+	NotificationChannelPush      NotificationChannel = "push"
+	NotificationChannelWebsocket NotificationChannel = "websocket"
+	NotificationChannelEmail     NotificationChannel = "email"
+
+	NotificationProviderFirebase NotificationProvider = "firebase"
+)
+
+// NotificationData is a JSON-serializable map for extra notification payload.
+type NotificationData map[string]interface{}
+
+func (d NotificationData) Value() (driver.Value, error) {
+	if d == nil {
+		return nil, nil
+	}
+	return json.Marshal(d)
+}
+
+func (d *NotificationData) Scan(value interface{}) error {
+	if value == nil {
+		*d = nil
+		return nil
+	}
+	bytes, ok := value.([]byte)
+	if !ok {
+		return errors.New("type assertion to []byte failed")
+	}
+	return json.Unmarshal(bytes, d)
+}
+
+// Notification is the master notification record.
+type Notification struct {
+	ID             uuid.UUID            `gorm:"type:uuid;primary_key;default:gen_random_uuid()" json:"id"`
+	Title          string               `gorm:"not null;size:255" json:"title"`
+	Body           string               `gorm:"type:text" json:"body"`
+	Type           string               `gorm:"size:100" json:"type"`
+	Category       string               `gorm:"size:100" json:"category"`
+	Priority       NotificationPriority `gorm:"size:50;default:'normal'" json:"priority"`
+	ImageURL       string               `gorm:"size:512" json:"image_url"`
+	ActionURL      string               `gorm:"size:512" json:"action_url"`
+	NotifiableType string               `gorm:"size:100" json:"notifiable_type"`
+	NotifiableID   *uuid.UUID           `gorm:"type:uuid" json:"notifiable_id"`
+	Data           NotificationData     `gorm:"type:jsonb" json:"data"`
+	ScheduledAt    *time.Time           `gorm:"type:timestamptz" json:"scheduled_at"`
+	SentAt         *time.Time           `gorm:"type:timestamptz" json:"sent_at"`
+	ExpiredAt      *time.Time           `gorm:"type:timestamptz" json:"expired_at"`
+	CreatedBy      *uuid.UUID           `gorm:"type:uuid" json:"created_by"`
+	CreatedAt      time.Time            `gorm:"autoCreateTime" json:"created_at"`
+	UpdatedAt      time.Time            `gorm:"autoUpdateTime" json:"updated_at"`
+
+	Creator   *User                   `gorm:"foreignKey:CreatedBy" json:"creator,omitempty"`
+	Receivers []*NotificationReceiver `gorm:"foreignKey:NotificationID" json:"receivers,omitempty"`
+}
+
+func (n *Notification) BeforeCreate(tx *gorm.DB) error {
+	if n.ID == uuid.Nil {
+		n.ID = uuid.New()
+	}
+	return nil
+}
+
+func (Notification) TableName() string {
+	return "notifications"
+}
+
+// NotificationReceiver links a notification to a specific user.
+type NotificationReceiver struct {
+	ID             uuid.UUID  `gorm:"type:uuid;primary_key;default:gen_random_uuid()" json:"id"`
+	NotificationID uuid.UUID  `gorm:"type:uuid;not null;index" json:"notification_id"`
+	UserID         uuid.UUID  `gorm:"type:uuid;not null;index" json:"user_id"`
+	IsRead         bool       `gorm:"default:false" json:"is_read"`
+	ReadAt         *time.Time `gorm:"type:timestamptz" json:"read_at"`
+	IsDeleted      bool       `gorm:"default:false" json:"is_deleted"`
+	DeletedAt      *time.Time `gorm:"type:timestamptz" json:"deleted_at"`
+	CreatedAt      time.Time  `gorm:"autoCreateTime" json:"created_at"`
+	UpdatedAt      time.Time  `gorm:"autoUpdateTime" json:"updated_at"`
+
+	Notification *Notification           `gorm:"foreignKey:NotificationID" json:"notification,omitempty"`
+	User         *User                   `gorm:"foreignKey:UserID" json:"user,omitempty"`
+	Deliveries   []*NotificationDelivery `gorm:"foreignKey:NotificationReceiverID" json:"deliveries,omitempty"`
+}
+
+func (n *NotificationReceiver) BeforeCreate(tx *gorm.DB) error {
+	if n.ID == uuid.Nil {
+		n.ID = uuid.New()
+	}
+	return nil
+}
+
+func (NotificationReceiver) TableName() string {
+	return "notification_receivers"
+}
+
+// NotificationDelivery tracks per-device delivery attempts.
+type NotificationDelivery struct {
+	ID                     uuid.UUID                  `gorm:"type:uuid;primary_key;default:gen_random_uuid()" json:"id"`
+	NotificationReceiverID uuid.UUID                  `gorm:"type:uuid;not null;index" json:"notification_receiver_id"`
+	UserDeviceID           uuid.UUID                  `gorm:"type:uuid;not null;index" json:"user_device_id"`
+	Channel                NotificationChannel        `gorm:"size:50;default:'push'" json:"channel"`
+	DeliveryStatus         NotificationDeliveryStatus `gorm:"size:50;default:'pending'" json:"delivery_status"`
+	Provider               NotificationProvider       `gorm:"size:50" json:"provider"`
+	ProviderMessageID      string                     `gorm:"size:255" json:"provider_message_id"`
+	SentAt                 *time.Time                 `gorm:"type:timestamptz" json:"sent_at"`
+	DeliveredAt            *time.Time                 `gorm:"type:timestamptz" json:"delivered_at"`
+	FailedAt               *time.Time                 `gorm:"type:timestamptz" json:"failed_at"`
+	FailureReason          string                     `gorm:"type:text" json:"failure_reason"`
+	RetryCount             int                        `gorm:"default:0" json:"retry_count"`
+	CreatedAt              time.Time                  `gorm:"autoCreateTime" json:"created_at"`
+	UpdatedAt              time.Time                  `gorm:"autoUpdateTime" json:"updated_at"`
+
+	NotificationReceiver *NotificationReceiver `gorm:"foreignKey:NotificationReceiverID" json:"notification_receiver,omitempty"`
+	UserDevice           *UserDevice           `gorm:"foreignKey:UserDeviceID" json:"user_device,omitempty"`
+}
+
+func (n *NotificationDelivery) BeforeCreate(tx *gorm.DB) error {
+	if n.ID == uuid.Nil {
+		n.ID = uuid.New()
+	}
+	return nil
+}
+
+func (NotificationDelivery) TableName() string {
+	return "notification_deliveries"
+}

internal/entities/product_outlet_price.go

@@ -0,0 +1,31 @@
+package entities
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+)
+
+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"`
+
+	Product Product `gorm:"foreignKey:ProductID" json:"product,omitempty"`
+	Outlet  Outlet  `gorm:"foreignKey:OutletID" json:"outlet,omitempty"`
+}
+
+func (p *ProductOutletPrice) BeforeCreate(tx *gorm.DB) error {
+	if p.ID == uuid.Nil {
+		p.ID = uuid.New()
+	}
+	return nil
+}
+
+func (ProductOutletPrice) TableName() string {
+	return "product_outlet_prices"
+}

internal/entities/user.go

@@ -49,7 +49,6 @@ type User struct {
 	Role           UserRole     `gorm:"not null;size:50" json:"role" validate:"required,oneof=admin manager cashier waiter"`
 	Permissions    Permissions  `gorm:"type:jsonb;default:'{}'" json:"permissions"`
 	IsActive       bool         `gorm:"default:true" json:"is_active"`
-	FcmToken       *string      `gorm:"size:512" json:"fcm_token,omitempty"`
 	CreatedAt      time.Time    `gorm:"autoCreateTime" json:"created_at"`
 	UpdatedAt      time.Time    `gorm:"autoUpdateTime" json:"updated_at"`
 	Organization   Organization `gorm:"foreignKey:OrganizationID" json:"organization,omitempty"`

internal/entities/user_device.go

@@ -0,0 +1,50 @@
+package entities
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+)
+
+type DeviceType string
+type DevicePlatform string
+
+const (
+	DeviceTypeMobile  DeviceType = "mobile"
+	DeviceTypeTablet  DeviceType = "tablet"
+	DeviceTypeDesktop DeviceType = "desktop"
+
+	DevicePlatformAndroid DevicePlatform = "android"
+	DevicePlatformIOS     DevicePlatform = "ios"
+	DevicePlatformWeb     DevicePlatform = "web"
+)
+
+type UserDevice struct {
+	ID           uuid.UUID      `gorm:"type:uuid;primary_key;default:gen_random_uuid()" json:"id"`
+	UserID       uuid.UUID      `gorm:"type:uuid;not null;index" json:"user_id"`
+	DeviceID     string         `gorm:"not null;size:255;index" json:"device_id"`
+	DeviceName   string         `gorm:"size:255" json:"device_name"`
+	DeviceType   DeviceType     `gorm:"size:50" json:"device_type"`
+	Platform     DevicePlatform `gorm:"size:50" json:"platform"`
+	FCMToken     string         `gorm:"size:512" json:"fcm_token"`
+	AppVersion   string         `gorm:"size:50" json:"app_version"`
+	OsVersion    string         `gorm:"size:50" json:"os_version"`
+	IPAddress    string         `gorm:"size:45" json:"ip_address"`
+	LastActiveAt *time.Time     `gorm:"type:timestamptz" json:"last_active_at"`
+	CreatedAt    time.Time      `gorm:"autoCreateTime" json:"created_at"`
+	UpdatedAt    time.Time      `gorm:"autoUpdateTime" json:"updated_at"`
+
+	User User `gorm:"foreignKey:UserID" json:"user,omitempty"`
+}
+
+func (u *UserDevice) BeforeCreate(tx *gorm.DB) error {
+	if u.ID == uuid.Nil {
+		u.ID = uuid.New()
+	}
+	return nil
+}
+
+func (UserDevice) TableName() string {
+	return "user_devices"
+}

internal/handler/analytics_handler.go

@@ -8,6 +8,7 @@ import (
 	"apskel-pos-be/internal/util"
 
 	"github.com/gin-gonic/gin"
+	"github.com/google/uuid"
 )
 
 type AnalyticsHandler struct {
@@ -25,6 +26,17 @@ func NewAnalyticsHandler(
 	}
 }
 
+func (h *AnalyticsHandler) resolveOutletID(c *gin.Context, contextOutletID uuid.UUID) *string {
+	if outletIDStr := c.Query("outlet_id"); outletIDStr != "" {
+		return &outletIDStr
+	}
+	if contextOutletID != uuid.Nil {
+		s := contextOutletID.String()
+		return &s
+	}
+	return nil
+}
+
 func (h *AnalyticsHandler) GetPaymentMethodAnalytics(c *gin.Context) {
 	ctx := c.Request.Context()
 	contextInfo := appcontext.FromGinContext(ctx)
@@ -36,7 +48,7 @@ func (h *AnalyticsHandler) GetPaymentMethodAnalytics(c *gin.Context) {
 	}
 
 	req.OrganizationID = contextInfo.OrganizationID
-	req.OutletID = &contextInfo.OutletID
+	req.OutletID = h.resolveOutletID(c, contextInfo.OutletID)
 	modelReq := transformer.PaymentMethodAnalyticsContractToModel(&req)
 
 	response, err := h.analyticsService.GetPaymentMethodAnalytics(ctx, modelReq)
@@ -60,7 +72,7 @@ func (h *AnalyticsHandler) GetSalesAnalytics(c *gin.Context) {
 	}
 
 	req.OrganizationID = contextInfo.OrganizationID
-	req.OutletID = &contextInfo.OutletID
+	req.OutletID = h.resolveOutletID(c, contextInfo.OutletID)
 	modelReq := transformer.SalesAnalyticsContractToModel(&req)
 
 	response, err := h.analyticsService.GetSalesAnalytics(ctx, modelReq)
@@ -84,7 +96,7 @@ func (h *AnalyticsHandler) GetProductAnalytics(c *gin.Context) {
 	}
 
 	req.OrganizationID = contextInfo.OrganizationID
-	req.OutletID = &contextInfo.OutletID
+	req.OutletID = h.resolveOutletID(c, contextInfo.OutletID)
 	modelReq := transformer.ProductAnalyticsContractToModel(&req)
 
 	response, err := h.analyticsService.GetProductAnalytics(ctx, modelReq)
@@ -108,7 +120,7 @@ func (h *AnalyticsHandler) GetProductAnalyticsPerCategory(c *gin.Context) {
 	}
 
 	req.OrganizationID = contextInfo.OrganizationID
-	req.OutletID = &contextInfo.OutletID
+	req.OutletID = h.resolveOutletID(c, contextInfo.OutletID)
 	modelReq := transformer.ProductAnalyticsPerCategoryContractToModel(&req)
 
 	response, err := h.analyticsService.GetProductAnalyticsPerCategory(ctx, modelReq)
@@ -132,7 +144,7 @@ func (h *AnalyticsHandler) GetDashboardAnalytics(c *gin.Context) {
 	}
 
 	req.OrganizationID = contextInfo.OrganizationID
-	req.OutletID = &contextInfo.OutletID
+	req.OutletID = h.resolveOutletID(c, contextInfo.OutletID)
 	modelReq := transformer.DashboardAnalyticsContractToModel(&req)
 
 	response, err := h.analyticsService.GetDashboardAnalytics(ctx, modelReq)
@@ -156,6 +168,7 @@ func (h *AnalyticsHandler) GetProfitLossAnalytics(c *gin.Context) {
 	}
 
 	req.OrganizationID = contextInfo.OrganizationID
+	req.OutletID = h.resolveOutletID(c, contextInfo.OutletID)
 	modelReq, err := transformer.ProfitLossAnalyticsContractToModel(&req)
 	if err != nil {
 		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{contract.NewResponseError("invalid_request", "AnalyticsHandler::GetProfitLossAnalytics", err.Error())}), "AnalyticsHandler::GetProfitLossAnalytics")

internal/handler/notification_handler.go

@@ -0,0 +1,190 @@
+package handler
+
+import (
+	"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 NotificationHandler struct {
+	notificationService   service.NotificationService
+	notificationValidator validator.NotificationValidator
+}
+
+func NewNotificationHandler(
+	notificationService service.NotificationService,
+	notificationValidator validator.NotificationValidator,
+) *NotificationHandler {
+	return &NotificationHandler{
+		notificationService:   notificationService,
+		notificationValidator: notificationValidator,
+	}
+}
+
+// Send godoc
+// POST /api/v1/notifications/send
+// Sends a notification to specific users.
+func (h *NotificationHandler) Send(c *gin.Context) {
+	ctx := c.Request.Context()
+	contextInfo := appcontext.FromGinContext(ctx)
+
+	var req contract.SendNotificationRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		logger.FromContext(ctx).WithError(err).Error("NotificationHandler::Send -> request binding failed")
+		validationErr := contract.NewResponseError(constants.MissingFieldErrorCode, constants.RequestEntity, err.Error())
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationErr}), "NotificationHandler::Send")
+		return
+	}
+
+	if validationErr, errCode := h.notificationValidator.ValidateSendRequest(&req); validationErr != nil {
+		respErr := contract.NewResponseError(errCode, constants.RequestEntity, validationErr.Error())
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{respErr}), "NotificationHandler::Send")
+		return
+	}
+
+	resp := h.notificationService.Send(ctx, &req, contextInfo.UserID)
+	if resp.HasErrors() {
+		logger.FromContext(ctx).WithError(resp.GetErrors()[0]).Error("NotificationHandler::Send -> service error")
+	}
+
+	util.HandleResponse(c.Writer, c.Request, resp, "NotificationHandler::Send")
+}
+
+// Broadcast godoc
+// POST /api/v1/notifications/broadcast
+// Sends a notification to all active users in the caller's organization.
+func (h *NotificationHandler) Broadcast(c *gin.Context) {
+	ctx := c.Request.Context()
+	contextInfo := appcontext.FromGinContext(ctx)
+
+	var req contract.BroadcastNotificationRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		logger.FromContext(ctx).WithError(err).Error("NotificationHandler::Broadcast -> request binding failed")
+		validationErr := contract.NewResponseError(constants.MissingFieldErrorCode, constants.RequestEntity, err.Error())
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationErr}), "NotificationHandler::Broadcast")
+		return
+	}
+
+	if validationErr, errCode := h.notificationValidator.ValidateBroadcastRequest(&req); validationErr != nil {
+		respErr := contract.NewResponseError(errCode, constants.RequestEntity, validationErr.Error())
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{respErr}), "NotificationHandler::Broadcast")
+		return
+	}
+
+	resp := h.notificationService.Broadcast(ctx, &req, contextInfo.OrganizationID, contextInfo.UserID)
+	if resp.HasErrors() {
+		logger.FromContext(ctx).WithError(resp.GetErrors()[0]).Error("NotificationHandler::Broadcast -> service error")
+	}
+
+	util.HandleResponse(c.Writer, c.Request, resp, "NotificationHandler::Broadcast")
+}
+
+// List godoc
+// GET /api/v1/notifications
+// Returns paginated notifications for the authenticated user.
+func (h *NotificationHandler) List(c *gin.Context) {
+	ctx := c.Request.Context()
+	contextInfo := appcontext.FromGinContext(ctx)
+
+	req := contract.ListNotificationsRequest{
+		Page:  1,
+		Limit: 20,
+	}
+
+	if err := c.ShouldBindQuery(&req); err != nil {
+		logger.FromContext(ctx).WithError(err).Error("NotificationHandler::List -> query binding failed")
+		validationErr := contract.NewResponseError(constants.MissingFieldErrorCode, constants.RequestEntity, err.Error())
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationErr}), "NotificationHandler::List")
+		return
+	}
+
+	if validationErr, errCode := h.notificationValidator.ValidateListRequest(&req); validationErr != nil {
+		respErr := contract.NewResponseError(errCode, constants.RequestEntity, validationErr.Error())
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{respErr}), "NotificationHandler::List")
+		return
+	}
+
+	resp := h.notificationService.ListForUser(ctx, &req, contextInfo.UserID)
+	util.HandleResponse(c.Writer, c.Request, resp, "NotificationHandler::List")
+}
+
+// GetByID godoc
+// GET /api/v1/notifications/:id
+func (h *NotificationHandler) GetByID(c *gin.Context) {
+	ctx := c.Request.Context()
+
+	idStr := c.Param("id")
+	id, err := uuid.Parse(idStr)
+	if err != nil {
+		logger.FromContext(ctx).WithError(err).Error("NotificationHandler::GetByID -> invalid notification ID")
+		validationErr := contract.NewResponseError(constants.MalformedFieldErrorCode, constants.RequestEntity, "Invalid notification ID")
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationErr}), "NotificationHandler::GetByID")
+		return
+	}
+
+	resp := h.notificationService.GetByID(ctx, id)
+	util.HandleResponse(c.Writer, c.Request, resp, "NotificationHandler::GetByID")
+}
+
+// MarkAsRead godoc
+// PUT /api/v1/notifications/:id/read
+func (h *NotificationHandler) MarkAsRead(c *gin.Context) {
+	ctx := c.Request.Context()
+	contextInfo := appcontext.FromGinContext(ctx)
+
+	idStr := c.Param("id")
+	receiverID, err := uuid.Parse(idStr)
+	if err != nil {
+		logger.FromContext(ctx).WithError(err).Error("NotificationHandler::MarkAsRead -> invalid receiver ID")
+		validationErr := contract.NewResponseError(constants.MalformedFieldErrorCode, constants.RequestEntity, "Invalid notification receiver ID")
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationErr}), "NotificationHandler::MarkAsRead")
+		return
+	}
+
+	resp := h.notificationService.MarkAsRead(ctx, receiverID, contextInfo.UserID)
+	if resp.HasErrors() {
+		logger.FromContext(ctx).WithError(resp.GetErrors()[0]).Error("NotificationHandler::MarkAsRead -> service error")
+	}
+
+	util.HandleResponse(c.Writer, c.Request, resp, "NotificationHandler::MarkAsRead")
+}
+
+// MarkAllAsRead godoc
+// PUT /api/v1/notifications/read-all
+func (h *NotificationHandler) MarkAllAsRead(c *gin.Context) {
+	ctx := c.Request.Context()
+	contextInfo := appcontext.FromGinContext(ctx)
+
+	resp := h.notificationService.MarkAllAsRead(ctx, contextInfo.UserID)
+	util.HandleResponse(c.Writer, c.Request, resp, "NotificationHandler::MarkAllAsRead")
+}
+
+// Delete godoc
+// DELETE /api/v1/notifications/:id
+func (h *NotificationHandler) Delete(c *gin.Context) {
+	ctx := c.Request.Context()
+	contextInfo := appcontext.FromGinContext(ctx)
+
+	idStr := c.Param("id")
+	receiverID, err := uuid.Parse(idStr)
+	if err != nil {
+		logger.FromContext(ctx).WithError(err).Error("NotificationHandler::Delete -> invalid receiver ID")
+		validationErr := contract.NewResponseError(constants.MalformedFieldErrorCode, constants.RequestEntity, "Invalid notification receiver ID")
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationErr}), "NotificationHandler::Delete")
+		return
+	}
+
+	resp := h.notificationService.DeleteForUser(ctx, receiverID, contextInfo.UserID)
+	if resp.HasErrors() {
+		logger.FromContext(ctx).WithError(resp.GetErrors()[0]).Error("NotificationHandler::Delete -> service error")
+	}
+
+	util.HandleResponse(c.Writer, c.Request, resp, "NotificationHandler::Delete")
+}

internal/handler/order_handler.go

@@ -137,6 +137,9 @@ func (h *OrderHandler) ListOrders(c *gin.Context) {
 	}
 
 	modelReq.OrganizationID = &contextInfo.OrganizationID
+	if modelReq.OutletID == nil && contextInfo.OutletID != uuid.Nil {
+		modelReq.OutletID = &contextInfo.OutletID
+	}
 	response, err := h.orderService.ListOrders(c.Request.Context(), modelReq)
 	if err != nil {
 		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{contract.NewResponseError("internal_error", "OrderHandler::ListOrders", err.Error())}), "OrderHandler::ListOrders")

internal/handler/product_handler.go

@@ -117,6 +117,7 @@ func (h *ProductHandler) DeleteProduct(c *gin.Context) {
 
 func (h *ProductHandler) GetProduct(c *gin.Context) {
 	ctx := c.Request.Context()
+	contextInfo := appcontext.FromGinContext(ctx)
 
 	productIDStr := c.Param("id")
 	productID, err := uuid.Parse(productIDStr)
@@ -127,7 +128,7 @@ func (h *ProductHandler) GetProduct(c *gin.Context) {
 		return
 	}
 
-	productResponse := h.productService.GetProductByID(ctx, productID)
+	productResponse := h.productService.GetProductByID(ctx, productID, contextInfo.OutletID)
 	if productResponse.HasErrors() {
 		errorResp := productResponse.GetErrors()[0]
 		logger.FromContext(ctx).WithError(errorResp).Error("ProductHandler::GetProduct -> Failed to get product from service")
@@ -184,6 +185,97 @@ func (h *ProductHandler) ListProducts(c *gin.Context) {
 		}
 	}
 
+	if outletIDStr := c.Query("outlet_id"); outletIDStr != "" {
+		if outletID, err := uuid.Parse(outletIDStr); err == nil {
+			req.OutletID = &outletID
+		}
+	} else if contextInfo.OutletID != uuid.Nil {
+		req.OutletID = &contextInfo.OutletID
+	}
+
+	if minPriceStr := c.Query("min_price"); minPriceStr != "" {
+		if minPrice, err := strconv.ParseFloat(minPriceStr, 64); err == nil {
+			req.MinPrice = &minPrice
+		}
+	}
+
+	if maxPriceStr := c.Query("max_price"); maxPriceStr != "" {
+		if maxPrice, err := strconv.ParseFloat(maxPriceStr, 64); err == nil {
+			req.MaxPrice = &maxPrice
+		}
+	}
+
+	validationError, validationErrorCode := h.productValidator.ValidateListProductsRequest(req)
+	if validationError != nil {
+		logger.FromContext(ctx).WithError(validationError).Error("ProductHandler::ListProducts -> request validation failed")
+		validationResponseError := contract.NewResponseError(validationErrorCode, constants.RequestEntity, validationError.Error())
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "ProductHandler::ListProducts")
+		return
+	}
+
+	productsResponse := h.productService.ListProducts(ctx, req)
+	if productsResponse.HasErrors() {
+		errorResp := productsResponse.GetErrors()[0]
+		logger.FromContext(ctx).WithError(errorResp).Error("ProductHandler::ListProducts -> Failed to list products from service")
+	}
+
+	util.HandleResponse(c.Writer, c.Request, productsResponse, "ProductHandler::ListProducts")
+}
+
+func (h *ProductHandler) ListProductAll(c *gin.Context) {
+	ctx := c.Request.Context()
+	contextInfo := appcontext.FromGinContext(ctx)
+
+	req := &contract.ListProductsRequest{
+		Page:           1,
+		Limit:          10,
+		OrganizationID: &contextInfo.OrganizationID,
+	}
+
+	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 businessType := c.Query("business_type"); businessType != "" {
+		req.BusinessType = businessType
+	}
+
+	if organizationIDStr := c.Query("organization_id"); organizationIDStr != "" {
+		if organizationID, err := uuid.Parse(organizationIDStr); err == nil {
+			req.OrganizationID = &organizationID
+		}
+	}
+
+	if categoryIDStr := c.Query("category_id"); categoryIDStr != "" {
+		if categoryID, err := uuid.Parse(categoryIDStr); err == nil {
+			req.CategoryID = &categoryID
+		}
+	}
+
+	if isActiveStr := c.Query("is_active"); isActiveStr != "" {
+		if isActive, err := strconv.ParseBool(isActiveStr); err == nil {
+			req.IsActive = &isActive
+		}
+	}
+
+	if outletIDStr := c.Query("outlet_id"); outletIDStr != "" {
+		if outletID, err := uuid.Parse(outletIDStr); err == nil {
+			req.OutletID = &outletID
+		}
+	}
+
 	if minPriceStr := c.Query("min_price"); minPriceStr != "" {
 		if minPrice, err := strconv.ParseFloat(minPriceStr, 64); err == nil {
 			req.MinPrice = &minPrice

internal/handler/product_outlet_price_handler.go

@@ -0,0 +1,135 @@
+package handler
+
+import (
+	"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 ProductOutletPriceHandler struct {
+	service   service.ProductOutletPriceService
+	validator validator.ProductOutletPriceValidator
+}
+
+func NewProductOutletPriceHandler(svc service.ProductOutletPriceService, v validator.ProductOutletPriceValidator) *ProductOutletPriceHandler {
+	return &ProductOutletPriceHandler{
+		service:   svc,
+		validator: v,
+	}
+}
+
+func (h *ProductOutletPriceHandler) Upsert(c *gin.Context) {
+	ctx := c.Request.Context()
+
+	var req contract.CreateProductOutletPriceRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		logger.FromContext(ctx).WithError(err).Error("ProductOutletPriceHandler::Upsert -> request binding failed")
+		validationResponseError := contract.NewResponseError(constants.MissingFieldErrorCode, constants.RequestEntity, err.Error())
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "ProductOutletPriceHandler::Upsert")
+		return
+	}
+
+	if validationErr, code := h.validator.ValidateCreateRequest(&req); validationErr != nil {
+		validationResponseError := contract.NewResponseError(code, constants.RequestEntity, validationErr.Error())
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "ProductOutletPriceHandler::Upsert")
+		return
+	}
+
+	resp := h.service.Upsert(ctx, &req)
+	util.HandleResponse(c.Writer, c.Request, resp, "ProductOutletPriceHandler::Upsert")
+}
+
+func (h *ProductOutletPriceHandler) GetByProductAndOutlet(c *gin.Context) {
+	ctx := c.Request.Context()
+
+	productIDStr := c.Param("product_id")
+	productID, err := uuid.Parse(productIDStr)
+	if err != nil {
+		validationResponseError := contract.NewResponseError(constants.MalformedFieldErrorCode, constants.RequestEntity, "Invalid product ID")
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "ProductOutletPriceHandler::GetByProductAndOutlet")
+		return
+	}
+
+	outletIDStr := c.Param("outlet_id")
+	outletID, err := uuid.Parse(outletIDStr)
+	if err != nil {
+		validationResponseError := contract.NewResponseError(constants.MalformedFieldErrorCode, constants.RequestEntity, "Invalid outlet ID")
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "ProductOutletPriceHandler::GetByProductAndOutlet")
+		return
+	}
+
+	resp := h.service.GetByProductAndOutlet(ctx, productID, outletID)
+	util.HandleResponse(c.Writer, c.Request, resp, "ProductOutletPriceHandler::GetByProductAndOutlet")
+}
+
+func (h *ProductOutletPriceHandler) GetByProduct(c *gin.Context) {
+	ctx := c.Request.Context()
+
+	productIDStr := c.Param("product_id")
+	productID, err := uuid.Parse(productIDStr)
+	if err != nil {
+		validationResponseError := contract.NewResponseError(constants.MalformedFieldErrorCode, constants.RequestEntity, "Invalid product ID")
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "ProductOutletPriceHandler::GetByProduct")
+		return
+	}
+
+	resp := h.service.GetByProduct(ctx, productID)
+	util.HandleResponse(c.Writer, c.Request, resp, "ProductOutletPriceHandler::GetByProduct")
+}
+
+func (h *ProductOutletPriceHandler) GetByOutlet(c *gin.Context) {
+	ctx := c.Request.Context()
+
+	outletIDStr := c.Param("outlet_id")
+	outletID, err := uuid.Parse(outletIDStr)
+	if err != nil {
+		validationResponseError := contract.NewResponseError(constants.MalformedFieldErrorCode, constants.RequestEntity, "Invalid outlet ID")
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "ProductOutletPriceHandler::GetByOutlet")
+		return
+	}
+
+	resp := h.service.GetByOutlet(ctx, outletID)
+	util.HandleResponse(c.Writer, c.Request, resp, "ProductOutletPriceHandler::GetByOutlet")
+}
+
+func (h *ProductOutletPriceHandler) Delete(c *gin.Context) {
+	ctx := c.Request.Context()
+
+	idStr := c.Param("id")
+	id, err := uuid.Parse(idStr)
+	if err != nil {
+		validationResponseError := contract.NewResponseError(constants.MalformedFieldErrorCode, constants.RequestEntity, "Invalid ID")
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "ProductOutletPriceHandler::Delete")
+		return
+	}
+
+	resp := h.service.Delete(ctx, id)
+	util.HandleResponse(c.Writer, c.Request, resp, "ProductOutletPriceHandler::Delete")
+}
+
+func (h *ProductOutletPriceHandler) BulkUpsert(c *gin.Context) {
+	ctx := c.Request.Context()
+
+	var req contract.BulkCreateProductOutletPriceRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		logger.FromContext(ctx).WithError(err).Error("ProductOutletPriceHandler::BulkUpsert -> request binding failed")
+		validationResponseError := contract.NewResponseError(constants.MissingFieldErrorCode, constants.RequestEntity, err.Error())
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "ProductOutletPriceHandler::BulkUpsert")
+		return
+	}
+
+	if validationErr, code := h.validator.ValidateBulkCreateRequest(&req); validationErr != nil {
+		validationResponseError := contract.NewResponseError(code, constants.RequestEntity, validationErr.Error())
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "ProductOutletPriceHandler::BulkUpsert")
+		return
+	}
+
+	resp := h.service.BulkUpsert(ctx, &req)
+	util.HandleResponse(c.Writer, c.Request, resp, "ProductOutletPriceHandler::BulkUpsert")
+}

internal/handler/report_handler.go

@@ -8,6 +8,7 @@ import (
 	"time"
 
 	"github.com/gin-gonic/gin"
+	"github.com/google/uuid"
 )
 
 type ReportHandler struct {
@@ -19,11 +20,26 @@ func NewReportHandler(reportService service.ReportService, userService UserServi
 	return &ReportHandler{reportService: reportService, userService: userService}
 }
 
+func (h *ReportHandler) resolveOutletID(c *gin.Context, contextOutletID uuid.UUID) string {
+	if outletIDStr := c.Query("outlet_id"); outletIDStr != "" {
+		if _, err := uuid.Parse(outletIDStr); err == nil {
+			return outletIDStr
+		}
+	}
+	if pathOutletID := c.Param("outlet_id"); pathOutletID != "" {
+		return pathOutletID
+	}
+	if contextOutletID != uuid.Nil {
+		return contextOutletID.String()
+	}
+	return ""
+}
+
 func (h *ReportHandler) GetDailyTransactionReportPDF(c *gin.Context) {
 	ctx := c.Request.Context()
 	ci := appcontext.FromGinContext(ctx)
 
-	outletID := c.Param("outlet_id")
+	outletID := h.resolveOutletID(c, ci.OutletID)
 	var dayPtr *time.Time
 	if d := c.Query("date"); d != "" {
 		if t, err := time.Parse("2006-01-02", d); err == nil {

internal/handler/self_order_handler.go

@@ -1,11 +1,11 @@
 package handler
 
 import (
-	"apskel-pos-be/internal/client"
 	"apskel-pos-be/internal/constants"
 	"apskel-pos-be/internal/contract"
 	"apskel-pos-be/internal/entities"
 	"apskel-pos-be/internal/logger"
+	"apskel-pos-be/internal/mappers"
 	"apskel-pos-be/internal/models"
 	"apskel-pos-be/internal/pkg/tabletoken"
 	"apskel-pos-be/internal/processor"
@@ -15,7 +15,6 @@ import (
 	"apskel-pos-be/internal/util"
 	"context"
 	"fmt"
-	"log"
 
 	"github.com/gin-gonic/gin"
 	"github.com/google/uuid"
@@ -30,7 +29,7 @@ type SelfOrderHandler struct {
 	userRepo                  processor.UserRepository
 	sessionRepo               repository.SessionRepository
 	orderRepo                 repository.OrderRepository
-	fcmClient       client.FcmClient
+	productOutletPriceService service.ProductOutletPriceService
 }
 
 func NewSelfOrderHandler(
@@ -42,7 +41,7 @@ func NewSelfOrderHandler(
 	userRepo processor.UserRepository,
 	sessionRepo repository.SessionRepository,
 	orderRepo repository.OrderRepository,
-	fcmClient client.FcmClient,
+	productOutletPriceService service.ProductOutletPriceService,
 ) *SelfOrderHandler {
 	return &SelfOrderHandler{
 		orderService:              orderService,
@@ -53,7 +52,7 @@ func NewSelfOrderHandler(
 		userRepo:                  userRepo,
 		sessionRepo:               sessionRepo,
 		orderRepo:                 orderRepo,
-		fcmClient:       fcmClient,
+		productOutletPriceService: productOutletPriceService,
 	}
 }
 
@@ -220,16 +219,29 @@ func (h *SelfOrderHandler) GetMenu(c *gin.Context) {
 		return
 	}
 
-	menu := h.buildMenuResponse(outlet, table, catList.Categories, prodList.Products)
+	menu := h.buildMenuResponse(ctx, outlet, table, catList.Categories, prodList.Products)
 	util.HandleResponse(c.Writer, c.Request, contract.BuildSuccessResponse(menu), "SelfOrderHandler::GetMenu")
 }
 
 func (h *SelfOrderHandler) buildMenuResponse(
+	ctx context.Context,
 	outlet *entities.Outlet,
 	table *entities.Table,
 	categories []contract.CategoryResponse,
 	products []contract.ProductResponse,
 ) *contract.SelfOrderMenuResponse {
+	outletPriceMap := make(map[uuid.UUID]float64)
+	if h.productOutletPriceService != nil {
+		priceResp := h.productOutletPriceService.GetByOutlet(ctx, outlet.ID)
+		if priceResp != nil && !priceResp.HasErrors() {
+			if priceList, ok := priceResp.Data.(*contract.ListProductOutletPricesResponse); ok {
+				for _, p := range priceList.Prices {
+					outletPriceMap[p.ProductID] = p.Price
+				}
+			}
+		}
+	}
+
 	productMap := make(map[uuid.UUID][]contract.ProductResponse)
 	for _, p := range products {
 		productMap[p.CategoryID] = append(productMap[p.CategoryID], p)
@@ -240,11 +252,15 @@ func (h *SelfOrderHandler) buildMenuResponse(
 		menuItems := make([]contract.SelfOrderMenuItem, 0)
 		if prods, ok := productMap[cat.ID]; ok {
 			for _, p := range prods {
+				price := p.Price
+				if outletPrice, exists := outletPriceMap[p.ID]; exists {
+					price = outletPrice
+				}
 				item := contract.SelfOrderMenuItem{
 					ID:          p.ID,
 					Name:        p.Name,
 					Description: p.Description,
-					Price:       p.Price,
+					Price:       price,
 					ImageURL:    p.ImageURL,
 				}
 				for _, v := range p.Variants {
@@ -335,6 +351,7 @@ func (h *SelfOrderHandler) CreateOrder(c *gin.Context) {
 	metadata := make(map[string]interface{})
 	metadata["self_order"] = true
 	metadata["session_id"] = session.ID
+	metadata["customer_name"] = req.CustomerName
 
 	tableID := table.ID
 	modelReq := &models.CreateOrderRequest{
@@ -342,7 +359,7 @@ func (h *SelfOrderHandler) CreateOrder(c *gin.Context) {
 		UserID:      userID,
 		TableID:     &tableID,
 		TableNumber: &table.TableName,
-		OrderType:   constants.OrderTypeDineIn,
+		OrderType:   constants.OrderType(req.OrderType),
 		OrderItems:  orderItems,
 		Metadata:    metadata,
 	}
@@ -356,41 +373,13 @@ func (h *SelfOrderHandler) CreateOrder(c *gin.Context) {
 		return
 	}
 
-	go h.sendNewOrderNotification(context.Background(), table.OrganizationID, table.TableName, len(req.OrderItems))
-
 	contractResp := transformer.OrderModelToContract(response)
 	util.HandleResponse(c.Writer, c.Request, contract.BuildSuccessResponse(contractResp), "SelfOrderHandler::CreateOrder")
 }
 
-func (h *SelfOrderHandler) sendNewOrderNotification(ctx context.Context, organizationID uuid.UUID, tableName string, itemCount int) {
-	users, err := h.userRepo.GetUsersWithFcmTokenByOrganization(ctx, organizationID)
-	if err != nil {
-		log.Printf("SelfOrderHandler::sendNewOrderNotification -> failed to get users with FCM token: %v", err)
-		return
-	}
-
-	tokens := make([]string, 0, len(users))
-	for _, u := range users {
-		if u.FcmToken != nil && *u.FcmToken != "" {
-			tokens = append(tokens, *u.FcmToken)
-		}
-	}
-
-	if len(tokens) == 0 {
-		return
-	}
-
-	title := "Order Baru"
-	body := fmt.Sprintf("Order baru dari Meja %s — %d item", tableName, itemCount)
-
-	if err := h.fcmClient.SendMulticastNotification(ctx, tokens, title, body); err != nil {
-		log.Printf("SelfOrderHandler::sendNewOrderNotification -> failed to send FCM notification: %v", err)
-	}
-}
-
 func (h *SelfOrderHandler) GetOrdersBySession(c *gin.Context) {
 	ctx := c.Request.Context()
-	sessionID := c.Param("sessionId")
+	sessionID := c.Param("session_id")
 
 	if sessionID == "" {
 		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{
@@ -423,47 +412,15 @@ func (h *SelfOrderHandler) GetOrdersBySession(c *gin.Context) {
 		return
 	}
 
-	resp := &contract.SelfOrderListOrdersResponse{
-		Orders: make([]contract.SelfOrderOrderItem, 0, len(orders)),
-	}
-	for _, o := range orders {
-		item := contract.SelfOrderOrderItem{
-			ID:              o.ID,
-			OrderNumber:     o.OrderNumber,
-			TableNumber:     o.TableNumber,
-			OrderType:       string(o.OrderType),
-			Status:          string(o.Status),
-			Subtotal:        o.Subtotal,
-			TaxAmount:       o.TaxAmount,
-			DiscountAmount:  o.DiscountAmount,
-			TotalAmount:     o.TotalAmount,
-			RemainingAmount: o.RemainingAmount,
-			PaymentStatus:   string(o.PaymentStatus),
-			IsVoid:          o.IsVoid,
-			IsRefund:        o.IsRefund,
-			CreatedAt:       o.CreatedAt,
-		}
-		for _, oi := range o.OrderItems {
-			lineItem := contract.SelfOrderOrderLineItem{
-				ProductID:        oi.ProductID,
-				Quantity:         oi.Quantity,
-				UnitPrice:        oi.UnitPrice,
-				TotalPrice:       oi.TotalPrice,
-				Notes:            oi.Notes,
-				Status:           string(oi.Status),
-				ProductVariantID: oi.ProductVariantID,
-			}
-			if oi.Product.ID != uuid.Nil {
-				lineItem.ProductName = oi.Product.Name
-			}
-			if oi.ProductVariant != nil {
-				lineItem.ProductVariantNam = &oi.ProductVariant.Name
-			}
-			item.Items = append(item.Items, lineItem)
-		}
-		resp.Orders = append(resp.Orders, item)
+	modelOrders := mappers.OrderEntitiesToResponses(orders)
+	contractOrders := make([]contract.OrderResponse, len(modelOrders))
+	for i := range modelOrders {
+		contractOrders[i] = *transformer.OrderModelToContract(&modelOrders[i])
 	}
 
+	resp := &contract.SelfOrderListOrdersResponse{
+		Orders: contractOrders,
+	}
 	util.HandleResponse(c.Writer, c.Request, contract.BuildSuccessResponse(resp), "SelfOrderHandler::GetOrdersBySession")
 }
 
@@ -472,6 +429,7 @@ func (h *SelfOrderHandler) validateCreateOrderRequest(req *contract.SelfOrderCre
 		return fmt.Errorf("session_id is required")
 	}
 	if len(req.OrderItems) == 0 {
+
 		return fmt.Errorf("at least one order item is required")
 	}
 	for i, item := range req.OrderItems {
@@ -499,7 +457,7 @@ func (h *SelfOrderHandler) ListCategories(c *gin.Context) {
 
 	if req.OrganizationID == "" {
 		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{
-			contract.NewResponseError(constants.MissingFieldErrorCode, constants.RequestEntity, "organisasi_id is required"),
+			contract.NewResponseError(constants.MissingFieldErrorCode, constants.RequestEntity, "organization_id is required"),
 		}), "SelfOrderHandler::ListCategories")
 		return
 	}
@@ -514,7 +472,7 @@ func (h *SelfOrderHandler) ListCategories(c *gin.Context) {
 	orgID, err := uuid.Parse(req.OrganizationID)
 	if err != nil {
 		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{
-			contract.NewResponseError(constants.ValidationErrorCode, constants.RequestEntity, "invalid organisasi_id format"),
+			contract.NewResponseError(constants.ValidationErrorCode, constants.RequestEntity, "invalid organization_id format"),
 		}), "SelfOrderHandler::ListCategories")
 		return
 	}

internal/handler/table_handler.go

@@ -19,14 +19,14 @@ import (
 type TableHandler struct {
 	tableService   TableService
 	tableValidator *validator.TableValidator
-	baseURL        string
+	selfOrderURL   string
 }
 
-func NewTableHandler(tableService TableService, tableValidator *validator.TableValidator, baseURL string) *TableHandler {
+func NewTableHandler(tableService TableService, tableValidator *validator.TableValidator, selfOrderURL string) *TableHandler {
 	return &TableHandler{
 		tableService:   tableService,
 		tableValidator: tableValidator,
-		baseURL:        baseURL,
+		selfOrderURL:   selfOrderURL,
 	}
 }
 
@@ -150,6 +150,11 @@ func (h *TableHandler) List(c *gin.Context) {
 		Limit:          100,
 	}
 
+	// Fallback to context outlet ID if not provided in query
+	if query.OutletID == "" && contextInfo.OutletID != uuid.Nil {
+		query.OutletID = contextInfo.OutletID.String()
+	}
+
 	if pageStr := c.Query("page"); pageStr != "" {
 		if page, err := strconv.Atoi(pageStr); err == nil && page > 0 {
 			query.Page = page
@@ -312,7 +317,7 @@ func (h *TableHandler) GenerateQRCode(c *gin.Context) {
 		return
 	}
 
-	selfOrderURL := fmt.Sprintf("%s/api/v1/self-order/table/%s", h.baseURL, token)
+	selfOrderURLResult := fmt.Sprintf("%s/menu?token=%s", h.selfOrderURL, token)
 
 	size := 256
 	if sizeStr := c.Query("size"); sizeStr != "" {
@@ -321,7 +326,7 @@ func (h *TableHandler) GenerateQRCode(c *gin.Context) {
 		}
 	}
 
-	pngBytes, err := qrcode.GeneratePNG(selfOrderURL, size)
+	pngBytes, err := qrcode.GeneratePNG(selfOrderURLResult, size)
 	if err != nil {
 		logger.FromContext(ctx).WithError(err).Error("TableHandler::GenerateQRCode -> QR generation failed")
 		validationResponseError := contract.NewResponseError(constants.InternalServerErrorCode, constants.TableEntity, "Failed to generate QR code")

internal/handler/user_device_handler.go

@@ -0,0 +1,215 @@
+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 UserDeviceHandler struct {
+	userDeviceService   service.UserDeviceService
+	userDeviceValidator validator.UserDeviceValidator
+}
+
+func NewUserDeviceHandler(
+	userDeviceService service.UserDeviceService,
+	userDeviceValidator validator.UserDeviceValidator,
+) *UserDeviceHandler {
+	return &UserDeviceHandler{
+		userDeviceService:   userDeviceService,
+		userDeviceValidator: userDeviceValidator,
+	}
+}
+
+func (h *UserDeviceHandler) RegisterDevice(c *gin.Context) {
+	ctx := c.Request.Context()
+	contextInfo := appcontext.FromGinContext(ctx)
+
+	var req contract.RegisterUserDeviceRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		logger.FromContext(ctx).WithError(err).Error("UserDeviceHandler::RegisterDevice -> request binding failed")
+		validationResponseError := contract.NewResponseError(constants.MissingFieldErrorCode, constants.RequestEntity, err.Error())
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "UserDeviceHandler::RegisterDevice")
+		return
+	}
+
+	validationError, validationErrorCode := h.userDeviceValidator.ValidateRegisterDeviceRequest(&req)
+	if validationError != nil {
+		validationResponseError := contract.NewResponseError(validationErrorCode, constants.RequestEntity, validationError.Error())
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "UserDeviceHandler::RegisterDevice")
+		return
+	}
+
+	deviceResponse := h.userDeviceService.RegisterDevice(ctx, contextInfo.UserID, &req)
+	if deviceResponse.HasErrors() {
+		errorResp := deviceResponse.GetErrors()[0]
+		logger.FromContext(ctx).WithError(errorResp).Error("UserDeviceHandler::RegisterDevice -> Failed to register device from service")
+	}
+
+	util.HandleResponse(c.Writer, c.Request, deviceResponse, "UserDeviceHandler::RegisterDevice")
+}
+
+func (h *UserDeviceHandler) UpdateDevice(c *gin.Context) {
+	ctx := c.Request.Context()
+
+	deviceIDStr := c.Param("id")
+	deviceID, err := uuid.Parse(deviceIDStr)
+	if err != nil {
+		logger.FromContext(ctx).WithError(err).Error("UserDeviceHandler::UpdateDevice -> Invalid device ID")
+		validationResponseError := contract.NewResponseError(constants.MalformedFieldErrorCode, constants.RequestEntity, "Invalid device ID")
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "UserDeviceHandler::UpdateDevice")
+		return
+	}
+
+	var req contract.UpdateUserDeviceRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		logger.FromContext(ctx).WithError(err).Error("UserDeviceHandler::UpdateDevice -> request binding failed")
+		validationResponseError := contract.NewResponseError(constants.MissingFieldErrorCode, constants.RequestEntity, "Invalid request body")
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "UserDeviceHandler::UpdateDevice")
+		return
+	}
+
+	validationError, validationErrorCode := h.userDeviceValidator.ValidateUpdateDeviceRequest(&req)
+	if validationError != nil {
+		validationResponseError := contract.NewResponseError(validationErrorCode, constants.RequestEntity, validationError.Error())
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "UserDeviceHandler::UpdateDevice")
+		return
+	}
+
+	deviceResponse := h.userDeviceService.UpdateDevice(ctx, deviceID, &req)
+	if deviceResponse.HasErrors() {
+		errorResp := deviceResponse.GetErrors()[0]
+		logger.FromContext(ctx).WithError(errorResp).Error("UserDeviceHandler::UpdateDevice -> Failed to update device from service")
+	}
+
+	util.HandleResponse(c.Writer, c.Request, deviceResponse, "UserDeviceHandler::UpdateDevice")
+}
+
+func (h *UserDeviceHandler) DeleteDevice(c *gin.Context) {
+	ctx := c.Request.Context()
+
+	deviceIDStr := c.Param("id")
+	deviceID, err := uuid.Parse(deviceIDStr)
+	if err != nil {
+		logger.FromContext(ctx).WithError(err).Error("UserDeviceHandler::DeleteDevice -> Invalid device ID")
+		validationResponseError := contract.NewResponseError(constants.MalformedFieldErrorCode, constants.RequestEntity, "Invalid device ID")
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "UserDeviceHandler::DeleteDevice")
+		return
+	}
+
+	deviceResponse := h.userDeviceService.DeleteDevice(ctx, deviceID)
+	if deviceResponse.HasErrors() {
+		errorResp := deviceResponse.GetErrors()[0]
+		logger.FromContext(ctx).WithError(errorResp).Error("UserDeviceHandler::DeleteDevice -> Failed to delete device from service")
+	}
+
+	util.HandleResponse(c.Writer, c.Request, deviceResponse, "UserDeviceHandler::DeleteDevice")
+}
+
+func (h *UserDeviceHandler) GetDevice(c *gin.Context) {
+	ctx := c.Request.Context()
+
+	deviceIDStr := c.Param("id")
+	deviceID, err := uuid.Parse(deviceIDStr)
+	if err != nil {
+		logger.FromContext(ctx).WithError(err).Error("UserDeviceHandler::GetDevice -> Invalid device ID")
+		validationResponseError := contract.NewResponseError(constants.MalformedFieldErrorCode, constants.RequestEntity, "Invalid device ID")
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "UserDeviceHandler::GetDevice")
+		return
+	}
+
+	deviceResponse := h.userDeviceService.GetDeviceByID(ctx, deviceID)
+	if deviceResponse.HasErrors() {
+		errorResp := deviceResponse.GetErrors()[0]
+		logger.FromContext(ctx).WithError(errorResp).Error("UserDeviceHandler::GetDevice -> Failed to get device from service")
+	}
+
+	util.HandleResponse(c.Writer, c.Request, deviceResponse, "UserDeviceHandler::GetDevice")
+}
+
+func (h *UserDeviceHandler) GetMyDevices(c *gin.Context) {
+	ctx := c.Request.Context()
+	contextInfo := appcontext.FromGinContext(ctx)
+
+	deviceResponse := h.userDeviceService.GetDevicesByUserID(ctx, contextInfo.UserID)
+	if deviceResponse.HasErrors() {
+		errorResp := deviceResponse.GetErrors()[0]
+		logger.FromContext(ctx).WithError(errorResp).Error("UserDeviceHandler::GetMyDevices -> Failed to get devices from service")
+	}
+
+	util.HandleResponse(c.Writer, c.Request, deviceResponse, "UserDeviceHandler::GetMyDevices")
+}
+
+func (h *UserDeviceHandler) GetDevicesByUser(c *gin.Context) {
+	ctx := c.Request.Context()
+
+	userIDStr := c.Param("user_id")
+	userID, err := uuid.Parse(userIDStr)
+	if err != nil {
+		logger.FromContext(ctx).WithError(err).Error("UserDeviceHandler::GetDevicesByUser -> Invalid user ID")
+		validationResponseError := contract.NewResponseError(constants.MalformedFieldErrorCode, constants.RequestEntity, "Invalid user ID")
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "UserDeviceHandler::GetDevicesByUser")
+		return
+	}
+
+	deviceResponse := h.userDeviceService.GetDevicesByUserID(ctx, userID)
+	if deviceResponse.HasErrors() {
+		errorResp := deviceResponse.GetErrors()[0]
+		logger.FromContext(ctx).WithError(errorResp).Error("UserDeviceHandler::GetDevicesByUser -> Failed to get devices from service")
+	}
+
+	util.HandleResponse(c.Writer, c.Request, deviceResponse, "UserDeviceHandler::GetDevicesByUser")
+}
+
+func (h *UserDeviceHandler) ListDevices(c *gin.Context) {
+	ctx := c.Request.Context()
+
+	req := &contract.ListUserDevicesRequest{
+		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 userID := c.Query("user_id"); userID != "" {
+		req.UserID = userID
+	}
+
+	if platform := c.Query("platform"); platform != "" {
+		req.Platform = platform
+	}
+
+	validationError, validationErrorCode := h.userDeviceValidator.ValidateListDevicesRequest(req)
+	if validationError != nil {
+		validationResponseError := contract.NewResponseError(validationErrorCode, constants.RequestEntity, validationError.Error())
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "UserDeviceHandler::ListDevices")
+		return
+	}
+
+	deviceResponse := h.userDeviceService.ListDevices(ctx, req)
+	if deviceResponse.HasErrors() {
+		errorResp := deviceResponse.GetErrors()[0]
+		logger.FromContext(ctx).WithError(errorResp).Error("UserDeviceHandler::ListDevices -> Failed to list devices from service")
+	}
+
+	util.HandleResponse(c.Writer, c.Request, deviceResponse, "UserDeviceHandler::ListDevices")
+}

internal/mappers/notification_mapper.go

@@ -0,0 +1,85 @@
+package mappers
+
+import (
+	"apskel-pos-be/internal/entities"
+	"apskel-pos-be/internal/models"
+)
+
+func NotificationEntityToResponse(e *entities.Notification) *models.NotificationResponse {
+	if e == nil {
+		return nil
+	}
+	return &models.NotificationResponse{
+		ID:             e.ID,
+		Title:          e.Title,
+		Body:           e.Body,
+		Type:           e.Type,
+		Category:       e.Category,
+		Priority:       e.Priority,
+		ImageURL:       e.ImageURL,
+		ActionURL:      e.ActionURL,
+		NotifiableType: e.NotifiableType,
+		NotifiableID:   e.NotifiableID,
+		Data:           e.Data,
+		ScheduledAt:    e.ScheduledAt,
+		SentAt:         e.SentAt,
+		ExpiredAt:      e.ExpiredAt,
+		CreatedBy:      e.CreatedBy,
+		CreatedAt:      e.CreatedAt,
+		UpdatedAt:      e.UpdatedAt,
+	}
+}
+
+func NotificationReceiverEntityToResponse(e *entities.NotificationReceiver) *models.NotificationReceiverResponse {
+	if e == nil {
+		return nil
+	}
+	resp := &models.NotificationReceiverResponse{
+		ID:             e.ID,
+		NotificationID: e.NotificationID,
+		UserID:         e.UserID,
+		IsRead:         e.IsRead,
+		ReadAt:         e.ReadAt,
+		IsDeleted:      e.IsDeleted,
+		DeletedAt:      e.DeletedAt,
+		CreatedAt:      e.CreatedAt,
+		UpdatedAt:      e.UpdatedAt,
+	}
+	if e.Notification != nil {
+		resp.Notification = NotificationEntityToResponse(e.Notification)
+	}
+	return resp
+}
+
+func NotificationReceiverEntitiesToResponses(entities []*entities.NotificationReceiver) []*models.NotificationReceiverResponse {
+	if entities == nil {
+		return nil
+	}
+	responses := make([]*models.NotificationReceiverResponse, len(entities))
+	for i, e := range entities {
+		responses[i] = NotificationReceiverEntityToResponse(e)
+	}
+	return responses
+}
+
+func NotificationDeliveryEntityToResponse(e *entities.NotificationDelivery) *models.NotificationDeliveryResponse {
+	if e == nil {
+		return nil
+	}
+	return &models.NotificationDeliveryResponse{
+		ID:                     e.ID,
+		NotificationReceiverID: e.NotificationReceiverID,
+		UserDeviceID:           e.UserDeviceID,
+		Channel:                e.Channel,
+		DeliveryStatus:         e.DeliveryStatus,
+		Provider:               e.Provider,
+		ProviderMessageID:      e.ProviderMessageID,
+		SentAt:                 e.SentAt,
+		DeliveredAt:            e.DeliveredAt,
+		FailedAt:               e.FailedAt,
+		FailureReason:          e.FailureReason,
+		RetryCount:             e.RetryCount,
+		CreatedAt:              e.CreatedAt,
+		UpdatedAt:              e.UpdatedAt,
+	}
+}

internal/mappers/product_mapper.go

@@ -135,6 +135,7 @@ func ProductEntityToResponse(entity *entities.Product) *models.ProductResponse {
 		Name:           entity.Name,
 		Description:    entity.Description,
 		Price:          entity.Price,
+		OutletPrice:    nil, // populated by processor when outletID is available
 		Cost:           entity.Cost,
 		BusinessType:   constants.BusinessType(entity.BusinessType),
 		ImageURL:       entity.ImageURL,

internal/mappers/product_outlet_price_mapper.go

@@ -0,0 +1,48 @@
+package mappers
+
+import (
+	"apskel-pos-be/internal/entities"
+	"apskel-pos-be/internal/models"
+)
+
+func ProductOutletPriceEntityToModel(entity *entities.ProductOutletPrice) *models.ProductOutletPrice {
+	if entity == nil {
+		return nil
+	}
+
+	return &models.ProductOutletPrice{
+		ID:        entity.ID,
+		ProductID: entity.ProductID,
+		OutletID:  entity.OutletID,
+		Price:     entity.Price,
+		CreatedAt: entity.CreatedAt,
+		UpdatedAt: entity.UpdatedAt,
+	}
+}
+
+func ProductOutletPriceModelToEntity(model *models.ProductOutletPrice) *entities.ProductOutletPrice {
+	if model == nil {
+		return nil
+	}
+
+	return &entities.ProductOutletPrice{
+		ID:        model.ID,
+		ProductID: model.ProductID,
+		OutletID:  model.OutletID,
+		Price:     model.Price,
+		CreatedAt: model.CreatedAt,
+		UpdatedAt: model.UpdatedAt,
+	}
+}
+
+func ProductOutletPriceEntitiesToModels(entities []*entities.ProductOutletPrice) []*models.ProductOutletPrice {
+	if entities == nil {
+		return nil
+	}
+
+	models := make([]*models.ProductOutletPrice, len(entities))
+	for i, entity := range entities {
+		models[i] = ProductOutletPriceEntityToModel(entity)
+	}
+	return models
+}

internal/mappers/user_device_mapper.go

@@ -0,0 +1,62 @@
+package mappers
+
+import (
+	"apskel-pos-be/internal/entities"
+	"apskel-pos-be/internal/models"
+)
+
+func UserDeviceEntityToModel(entity *entities.UserDevice) *models.UserDevice {
+	if entity == nil {
+		return nil
+	}
+
+	return &models.UserDevice{
+		ID:           entity.ID,
+		UserID:       entity.UserID,
+		DeviceID:     entity.DeviceID,
+		DeviceName:   entity.DeviceName,
+		DeviceType:   entity.DeviceType,
+		Platform:     entity.Platform,
+		FCMToken:     entity.FCMToken,
+		AppVersion:   entity.AppVersion,
+		OsVersion:    entity.OsVersion,
+		IPAddress:    entity.IPAddress,
+		LastActiveAt: entity.LastActiveAt,
+		CreatedAt:    entity.CreatedAt,
+		UpdatedAt:    entity.UpdatedAt,
+	}
+}
+
+func UserDeviceEntityToResponse(entity *entities.UserDevice) *models.UserDeviceResponse {
+	if entity == nil {
+		return nil
+	}
+
+	return &models.UserDeviceResponse{
+		ID:           entity.ID,
+		UserID:       entity.UserID,
+		DeviceID:     entity.DeviceID,
+		DeviceName:   entity.DeviceName,
+		DeviceType:   entity.DeviceType,
+		Platform:     entity.Platform,
+		FCMToken:     entity.FCMToken,
+		AppVersion:   entity.AppVersion,
+		OsVersion:    entity.OsVersion,
+		IPAddress:    entity.IPAddress,
+		LastActiveAt: entity.LastActiveAt,
+		CreatedAt:    entity.CreatedAt,
+		UpdatedAt:    entity.UpdatedAt,
+	}
+}
+
+func UserDeviceEntitiesToResponses(entities []*entities.UserDevice) []*models.UserDeviceResponse {
+	if entities == nil {
+		return nil
+	}
+
+	responses := make([]*models.UserDeviceResponse, len(entities))
+	for i, entity := range entities {
+		responses[i] = UserDeviceEntityToResponse(entity)
+	}
+	return responses
+}

internal/middleware/auth_middleware.go

@@ -11,6 +11,7 @@ import (
 	"apskel-pos-be/internal/service"
 
 	"github.com/gin-gonic/gin"
+	"github.com/google/uuid"
 )
 
 type AuthMiddleware struct {
@@ -45,9 +46,13 @@ func (m *AuthMiddleware) RequireAuth() gin.HandlerFunc {
 		setKeyInContext(c, appcontext.OrganizationIDKey, userResponse.OrganizationID.String())
 		setKeyInContext(c, appcontext.UserIDKey, userResponse.ID.String())
 
-		if userResponse.Role != "superadmin" {
-			setKeyInContext(c, appcontext.OutletIDKey, userResponse.OutletID.String())
+		// Always override OutletID from token to prevent header injection.
+		// Set empty string if user has no outlet, so PopulateContext header value is ignored.
+		outletIDStr := ""
+		if userResponse.OutletID != nil && *userResponse.OutletID != uuid.Nil {
+			outletIDStr = userResponse.OutletID.String()
 		}
+		setKeyInContext(c, appcontext.OutletIDKey, outletIDStr)
 
 		logger.FromContext(c.Request.Context()).Infof("AuthMiddleware::RequireAuth -> User authenticated: %s", userResponse.Email)
 		c.Next()

internal/models/notification.go

@@ -0,0 +1,118 @@
+package models
+
+import (
+	"time"
+
+	"apskel-pos-be/internal/entities"
+
+	"github.com/google/uuid"
+)
+
+// ---- Request models ----
+
+type SendNotificationRequest struct {
+	Title          string                        `json:"title"`
+	Body           string                        `json:"body"`
+	Type           string                        `json:"type"`
+	Category       string                        `json:"category"`
+	Priority       entities.NotificationPriority `json:"priority"`
+	ImageURL       string                        `json:"image_url"`
+	ActionURL      string                        `json:"action_url"`
+	NotifiableType string                        `json:"notifiable_type"`
+	NotifiableID   *uuid.UUID                    `json:"notifiable_id"`
+	Data           map[string]interface{}        `json:"data"`
+	ReceiverIDs    []uuid.UUID                   `json:"receiver_ids"`
+	ScheduledAt    *time.Time                    `json:"scheduled_at"`
+	ExpiredAt      *time.Time                    `json:"expired_at"`
+	CreatedBy      *uuid.UUID                    `json:"created_by"`
+}
+
+type BroadcastNotificationRequest struct {
+	Title          string                        `json:"title"`
+	Body           string                        `json:"body"`
+	Type           string                        `json:"type"`
+	Category       string                        `json:"category"`
+	Priority       entities.NotificationPriority `json:"priority"`
+	ImageURL       string                        `json:"image_url"`
+	ActionURL      string                        `json:"action_url"`
+	NotifiableType string                        `json:"notifiable_type"`
+	NotifiableID   *uuid.UUID                    `json:"notifiable_id"`
+	Data           map[string]interface{}        `json:"data"`
+	OrganizationID uuid.UUID                     `json:"organization_id"`
+	ScheduledAt    *time.Time                    `json:"scheduled_at"`
+	ExpiredAt      *time.Time                    `json:"expired_at"`
+	CreatedBy      *uuid.UUID                    `json:"created_by"`
+}
+
+type MarkNotificationReadRequest struct {
+	NotificationReceiverID uuid.UUID `json:"notification_receiver_id"`
+	UserID                 uuid.UUID `json:"user_id"`
+}
+
+type ListNotificationsRequest struct {
+	Page   int       `json:"page"`
+	Limit  int       `json:"limit"`
+	UserID uuid.UUID `json:"user_id"`
+	IsRead *bool     `json:"is_read"`
+}
+
+// ---- Response models ----
+
+type NotificationResponse struct {
+	ID             uuid.UUID                     `json:"id"`
+	Title          string                        `json:"title"`
+	Body           string                        `json:"body"`
+	Type           string                        `json:"type"`
+	Category       string                        `json:"category"`
+	Priority       entities.NotificationPriority `json:"priority"`
+	ImageURL       string                        `json:"image_url"`
+	ActionURL      string                        `json:"action_url"`
+	NotifiableType string                        `json:"notifiable_type"`
+	NotifiableID   *uuid.UUID                    `json:"notifiable_id"`
+	Data           map[string]interface{}        `json:"data"`
+	ScheduledAt    *time.Time                    `json:"scheduled_at"`
+	SentAt         *time.Time                    `json:"sent_at"`
+	ExpiredAt      *time.Time                    `json:"expired_at"`
+	CreatedBy      *uuid.UUID                    `json:"created_by"`
+	CreatedAt      time.Time                     `json:"created_at"`
+	UpdatedAt      time.Time                     `json:"updated_at"`
+}
+
+type NotificationReceiverResponse struct {
+	ID             uuid.UUID             `json:"id"`
+	NotificationID uuid.UUID             `json:"notification_id"`
+	UserID         uuid.UUID             `json:"user_id"`
+	IsRead         bool                  `json:"is_read"`
+	ReadAt         *time.Time            `json:"read_at"`
+	IsDeleted      bool                  `json:"is_deleted"`
+	DeletedAt      *time.Time            `json:"deleted_at"`
+	CreatedAt      time.Time             `json:"created_at"`
+	UpdatedAt      time.Time             `json:"updated_at"`
+	Notification   *NotificationResponse `json:"notification,omitempty"`
+}
+
+type NotificationDeliveryResponse struct {
+	ID                     uuid.UUID                           `json:"id"`
+	NotificationReceiverID uuid.UUID                           `json:"notification_receiver_id"`
+	UserDeviceID           uuid.UUID                           `json:"user_device_id"`
+	Channel                entities.NotificationChannel        `json:"channel"`
+	DeliveryStatus         entities.NotificationDeliveryStatus `json:"delivery_status"`
+	Provider               entities.NotificationProvider       `json:"provider"`
+	ProviderMessageID      string                              `json:"provider_message_id"`
+	SentAt                 *time.Time                          `json:"sent_at"`
+	DeliveredAt            *time.Time                          `json:"delivered_at"`
+	FailedAt               *time.Time                          `json:"failed_at"`
+	FailureReason          string                              `json:"failure_reason"`
+	RetryCount             int                                 `json:"retry_count"`
+	CreatedAt              time.Time                           `json:"created_at"`
+	UpdatedAt              time.Time                           `json:"updated_at"`
+}
+
+type ListNotificationsResponse struct {
+	Notifications []*NotificationReceiverResponse `json:"notifications"`
+	TotalCount    int                             `json:"total_count"`
+	UnreadCount   int                             `json:"unread_count"`
+	Page          int                             `json:"page"`
+	Limit         int                             `json:"limit"`
+	TotalPages    int                             `json:"total_pages"`
+}

internal/models/product.go

@@ -100,6 +100,8 @@ type ProductResponse struct {
 	Name           string
 	Description    *string
 	Price          float64
+	OutletPrice    *float64      // outlet-specific price, nil if not set
+	OutletPrices   []OutletPrice // all outlet prices, populated when no outletID in context
 	Cost           float64
 	BusinessType   constants.BusinessType
 	ImageURL       *string
@@ -113,6 +115,12 @@ type ProductResponse struct {
 	Variants       []ProductVariantResponse
 }
 
+type OutletPrice struct {
+	OutletID   uuid.UUID
+	OutletName string
+	Price      float64
+}
+
 type ProductVariantResponse struct {
 	ID            uuid.UUID
 	ProductID     uuid.UUID

internal/models/product_outlet_price.go

@@ -0,0 +1,35 @@
+package models
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+)
+
+type ProductOutletPrice struct {
+	ID        uuid.UUID
+	ProductID uuid.UUID
+	OutletID  uuid.UUID
+	Price     float64
+	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"`
+}
+
+type UpdateProductOutletPriceRequest struct {
+	Price *float64 `validate:"required,min=0"`
+}
+
+type ProductOutletPriceResponse struct {
+	ID        uuid.UUID `json:"id"`
+	ProductID uuid.UUID `json:"product_id"`
+	OutletID  uuid.UUID `json:"outlet_id"`
+	Price     float64   `json:"price"`
+	CreatedAt time.Time `json:"created_at"`
+	UpdatedAt time.Time `json:"updated_at"`
+}

internal/models/user_device.go

@@ -0,0 +1,77 @@
+package models
+
+import (
+	"time"
+
+	"apskel-pos-be/internal/entities"
+
+	"github.com/google/uuid"
+)
+
+type UserDevice struct {
+	ID           uuid.UUID               `json:"id"`
+	UserID       uuid.UUID               `json:"user_id"`
+	DeviceID     string                  `json:"device_id"`
+	DeviceName   string                  `json:"device_name"`
+	DeviceType   entities.DeviceType     `json:"device_type"`
+	Platform     entities.DevicePlatform `json:"platform"`
+	FCMToken     string                  `json:"fcm_token"`
+	AppVersion   string                  `json:"app_version"`
+	OsVersion    string                  `json:"os_version"`
+	IPAddress    string                  `json:"ip_address"`
+	LastActiveAt *time.Time              `json:"last_active_at"`
+	CreatedAt    time.Time               `json:"created_at"`
+	UpdatedAt    time.Time               `json:"updated_at"`
+}
+
+type UserDeviceResponse struct {
+	ID           uuid.UUID               `json:"id"`
+	UserID       uuid.UUID               `json:"user_id"`
+	DeviceID     string                  `json:"device_id"`
+	DeviceName   string                  `json:"device_name"`
+	DeviceType   entities.DeviceType     `json:"device_type"`
+	Platform     entities.DevicePlatform `json:"platform"`
+	FCMToken     string                  `json:"fcm_token"`
+	AppVersion   string                  `json:"app_version"`
+	OsVersion    string                  `json:"os_version"`
+	IPAddress    string                  `json:"ip_address"`
+	LastActiveAt *time.Time              `json:"last_active_at"`
+	CreatedAt    time.Time               `json:"created_at"`
+	UpdatedAt    time.Time               `json:"updated_at"`
+}
+
+type RegisterUserDeviceRequest struct {
+	UserID     uuid.UUID               `json:"user_id"`
+	DeviceID   string                  `json:"device_id"`
+	DeviceName string                  `json:"device_name"`
+	DeviceType entities.DeviceType     `json:"device_type"`
+	Platform   entities.DevicePlatform `json:"platform"`
+	FCMToken   string                  `json:"fcm_token"`
+	AppVersion string                  `json:"app_version"`
+	OsVersion  string                  `json:"os_version"`
+	IPAddress  string                  `json:"ip_address"`
+}
+
+type UpdateUserDeviceRequest struct {
+	DeviceName string                  `json:"device_name"`
+	DeviceType entities.DeviceType     `json:"device_type"`
+	Platform   entities.DevicePlatform `json:"platform"`
+	FCMToken   string                  `json:"fcm_token"`
+	AppVersion string                  `json:"app_version"`
+	OsVersion  string                  `json:"os_version"`
+}
+
+type ListUserDevicesRequest struct {
+	Page     int    `json:"page"`
+	Limit    int    `json:"limit"`
+	UserID   string `json:"user_id,omitempty"`
+	Platform string `json:"platform,omitempty"`
+}
+
+type ListUserDevicesResponse struct {
+	Devices    []*UserDeviceResponse `json:"devices"`
+	TotalCount int                   `json:"total_count"`
+	Page       int                   `json:"page"`
+	Limit      int                   `json:"limit"`
+	TotalPages int                   `json:"total_pages"`
+}

internal/processor/notification_processor.go

@@ -0,0 +1,338 @@
+package processor
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"apskel-pos-be/internal/client"
+	"apskel-pos-be/internal/entities"
+	"apskel-pos-be/internal/mappers"
+	"apskel-pos-be/internal/models"
+
+	"github.com/google/uuid"
+)
+
+// NotificationRepository is the interface the processor depends on.
+type NotificationRepository interface {
+	Create(ctx context.Context, notification *entities.Notification) error
+	GetByID(ctx context.Context, id uuid.UUID) (*entities.Notification, error)
+	Update(ctx context.Context, notification *entities.Notification) error
+	Delete(ctx context.Context, id uuid.UUID) error
+	List(ctx context.Context, filters map[string]interface{}, limit, offset int) ([]*entities.Notification, int64, error)
+}
+
+// NotificationReceiverRepository is the interface the processor depends on.
+type NotificationReceiverRepository interface {
+	Create(ctx context.Context, receiver *entities.NotificationReceiver) error
+	BulkCreate(ctx context.Context, receivers []*entities.NotificationReceiver) error
+	GetByID(ctx context.Context, id uuid.UUID) (*entities.NotificationReceiver, error)
+	GetByNotificationAndUser(ctx context.Context, notificationID, userID uuid.UUID) (*entities.NotificationReceiver, error)
+	Update(ctx context.Context, receiver *entities.NotificationReceiver) error
+	ListByUserID(ctx context.Context, userID uuid.UUID, isRead *bool, limit, offset int) ([]*entities.NotificationReceiver, int64, error)
+	CountUnreadByUserID(ctx context.Context, userID uuid.UUID) (int64, error)
+	SoftDeleteByID(ctx context.Context, id uuid.UUID) error
+}
+
+// NotificationDeliveryRepository is the interface the processor depends on.
+type NotificationDeliveryRepository interface {
+	Create(ctx context.Context, delivery *entities.NotificationDelivery) error
+	BulkCreate(ctx context.Context, deliveries []*entities.NotificationDelivery) error
+	GetByID(ctx context.Context, id uuid.UUID) (*entities.NotificationDelivery, error)
+	Update(ctx context.Context, delivery *entities.NotificationDelivery) error
+	ListByReceiverID(ctx context.Context, receiverID uuid.UUID) ([]*entities.NotificationDelivery, error)
+}
+
+// NotificationUserRepository is a minimal interface to fetch user devices.
+type NotificationUserDeviceRepository interface {
+	GetByUserID(ctx context.Context, userID uuid.UUID) ([]*entities.UserDevice, error)
+}
+
+// NotificationUserRepository is a minimal interface to fetch users by org.
+type NotificationUserRepository interface {
+	GetActiveUsers(ctx context.Context, organizationID uuid.UUID) ([]*entities.User, error)
+}
+
+// NotificationProcessor defines the business logic interface.
+type NotificationProcessor interface {
+	Send(ctx context.Context, req *models.SendNotificationRequest) (*models.NotificationResponse, error)
+	Broadcast(ctx context.Context, req *models.BroadcastNotificationRequest) (*models.NotificationResponse, error)
+	MarkAsRead(ctx context.Context, receiverID, userID uuid.UUID) (*models.NotificationReceiverResponse, error)
+	MarkAllAsRead(ctx context.Context, userID uuid.UUID) error
+	DeleteForUser(ctx context.Context, receiverID, userID uuid.UUID) error
+	ListForUser(ctx context.Context, req *models.ListNotificationsRequest) ([]*models.NotificationReceiverResponse, int64, int64, error)
+	GetByID(ctx context.Context, id uuid.UUID) (*models.NotificationResponse, error)
+}
+
+type NotificationProcessorImpl struct {
+	notificationRepo NotificationRepository
+	receiverRepo     NotificationReceiverRepository
+	deliveryRepo     NotificationDeliveryRepository
+	userDeviceRepo   NotificationUserDeviceRepository
+	userRepo         NotificationUserRepository
+	fcmClient        client.FCMClient
+}
+
+func NewNotificationProcessor(
+	notificationRepo NotificationRepository,
+	receiverRepo NotificationReceiverRepository,
+	deliveryRepo NotificationDeliveryRepository,
+	userDeviceRepo NotificationUserDeviceRepository,
+	userRepo NotificationUserRepository,
+	fcmClient client.FCMClient,
+) *NotificationProcessorImpl {
+	return &NotificationProcessorImpl{
+		notificationRepo: notificationRepo,
+		receiverRepo:     receiverRepo,
+		deliveryRepo:     deliveryRepo,
+		userDeviceRepo:   userDeviceRepo,
+		userRepo:         userRepo,
+		fcmClient:        fcmClient,
+	}
+}
+
+// Send creates a notification and dispatches it to the given receiver user IDs via FCM.
+func (p *NotificationProcessorImpl) Send(ctx context.Context, req *models.SendNotificationRequest) (*models.NotificationResponse, error) {
+	if len(req.ReceiverIDs) == 0 {
+		return nil, fmt.Errorf("at least one receiver_id is required")
+	}
+
+	notification := &entities.Notification{
+		Title:          req.Title,
+		Body:           req.Body,
+		Type:           req.Type,
+		Category:       req.Category,
+		Priority:       req.Priority,
+		ImageURL:       req.ImageURL,
+		ActionURL:      req.ActionURL,
+		NotifiableType: req.NotifiableType,
+		NotifiableID:   req.NotifiableID,
+		Data:           req.Data,
+		ScheduledAt:    req.ScheduledAt,
+		ExpiredAt:      req.ExpiredAt,
+		CreatedBy:      req.CreatedBy,
+	}
+
+	if err := p.notificationRepo.Create(ctx, notification); err != nil {
+		return nil, fmt.Errorf("failed to create notification: %w", err)
+	}
+
+	// Create receiver records and dispatch FCM per user.
+	for _, userID := range req.ReceiverIDs {
+		receiver := &entities.NotificationReceiver{
+			NotificationID: notification.ID,
+			UserID:         userID,
+		}
+		if err := p.receiverRepo.Create(ctx, receiver); err != nil {
+			// Log but continue for other receivers.
+			continue
+		}
+
+		p.dispatchFCMToUser(ctx, receiver, notification)
+	}
+
+	// Mark notification as sent.
+	now := time.Now()
+	notification.SentAt = &now
+	_ = p.notificationRepo.Update(ctx, notification)
+
+	return mappers.NotificationEntityToResponse(notification), nil
+}
+
+// Broadcast sends a notification to all active users in an organization.
+func (p *NotificationProcessorImpl) Broadcast(ctx context.Context, req *models.BroadcastNotificationRequest) (*models.NotificationResponse, error) {
+	users, err := p.userRepo.GetActiveUsers(ctx, req.OrganizationID)
+	if err != nil {
+		return nil, fmt.Errorf("failed to fetch organization users: %w", err)
+	}
+
+	notification := &entities.Notification{
+		Title:          req.Title,
+		Body:           req.Body,
+		Type:           req.Type,
+		Category:       req.Category,
+		Priority:       req.Priority,
+		ImageURL:       req.ImageURL,
+		ActionURL:      req.ActionURL,
+		NotifiableType: req.NotifiableType,
+		NotifiableID:   req.NotifiableID,
+		Data:           req.Data,
+		ScheduledAt:    req.ScheduledAt,
+		ExpiredAt:      req.ExpiredAt,
+		CreatedBy:      req.CreatedBy,
+	}
+
+	if err := p.notificationRepo.Create(ctx, notification); err != nil {
+		return nil, fmt.Errorf("failed to create notification: %w", err)
+	}
+
+	// Build receiver records in bulk.
+	receivers := make([]*entities.NotificationReceiver, 0, len(users))
+	for _, u := range users {
+		receivers = append(receivers, &entities.NotificationReceiver{
+			NotificationID: notification.ID,
+			UserID:         u.ID,
+		})
+	}
+
+	if err := p.receiverRepo.BulkCreate(ctx, receivers); err != nil {
+		return nil, fmt.Errorf("failed to create notification receivers: %w", err)
+	}
+
+	// Dispatch FCM for each receiver.
+	for _, receiver := range receivers {
+		p.dispatchFCMToUser(ctx, receiver, notification)
+	}
+
+	now := time.Now()
+	notification.SentAt = &now
+	_ = p.notificationRepo.Update(ctx, notification)
+
+	return mappers.NotificationEntityToResponse(notification), nil
+}
+
+// MarkAsRead marks a single notification receiver record as read.
+func (p *NotificationProcessorImpl) MarkAsRead(ctx context.Context, receiverID, userID uuid.UUID) (*models.NotificationReceiverResponse, error) {
+	receiver, err := p.receiverRepo.GetByID(ctx, receiverID)
+	if err != nil {
+		return nil, fmt.Errorf("notification not found: %w", err)
+	}
+
+	if receiver.UserID != userID {
+		return nil, fmt.Errorf("unauthorized: notification does not belong to user")
+	}
+
+	if !receiver.IsRead {
+		now := time.Now()
+		receiver.IsRead = true
+		receiver.ReadAt = &now
+		if err := p.receiverRepo.Update(ctx, receiver); err != nil {
+			return nil, fmt.Errorf("failed to mark notification as read: %w", err)
+		}
+	}
+
+	return mappers.NotificationReceiverEntityToResponse(receiver), nil
+}
+
+// MarkAllAsRead marks all unread notifications for a user as read.
+func (p *NotificationProcessorImpl) MarkAllAsRead(ctx context.Context, userID uuid.UUID) error {
+	isRead := false
+	receivers, _, err := p.receiverRepo.ListByUserID(ctx, userID, &isRead, 1000, 0)
+	if err != nil {
+		return fmt.Errorf("failed to fetch unread notifications: %w", err)
+	}
+
+	now := time.Now()
+	for _, r := range receivers {
+		r.IsRead = true
+		r.ReadAt = &now
+		_ = p.receiverRepo.Update(ctx, r)
+	}
+
+	return nil
+}
+
+// DeleteForUser soft-deletes a notification receiver record for a user.
+func (p *NotificationProcessorImpl) DeleteForUser(ctx context.Context, receiverID, userID uuid.UUID) error {
+	receiver, err := p.receiverRepo.GetByID(ctx, receiverID)
+	if err != nil {
+		return fmt.Errorf("notification not found: %w", err)
+	}
+
+	if receiver.UserID != userID {
+		return fmt.Errorf("unauthorized: notification does not belong to user")
+	}
+
+	return p.receiverRepo.SoftDeleteByID(ctx, receiverID)
+}
+
+// ListForUser returns paginated notifications for a user.
+// Returns: receivers, total, unreadCount, error
+func (p *NotificationProcessorImpl) ListForUser(ctx context.Context, req *models.ListNotificationsRequest) ([]*models.NotificationReceiverResponse, int64, int64, error) {
+	offset := (req.Page - 1) * req.Limit
+
+	receivers, total, err := p.receiverRepo.ListByUserID(ctx, req.UserID, req.IsRead, req.Limit, offset)
+	if err != nil {
+		return nil, 0, 0, fmt.Errorf("failed to list notifications: %w", err)
+	}
+
+	unreadCount, err := p.receiverRepo.CountUnreadByUserID(ctx, req.UserID)
+	if err != nil {
+		unreadCount = 0
+	}
+
+	responses := mappers.NotificationReceiverEntitiesToResponses(receivers)
+	return responses, total, unreadCount, nil
+}
+
+// GetByID returns a single notification by its ID.
+func (p *NotificationProcessorImpl) GetByID(ctx context.Context, id uuid.UUID) (*models.NotificationResponse, error) {
+	notification, err := p.notificationRepo.GetByID(ctx, id)
+	if err != nil {
+		return nil, fmt.Errorf("notification not found: %w", err)
+	}
+	return mappers.NotificationEntityToResponse(notification), nil
+}
+
+// dispatchFCMToUser fetches all FCM tokens for a user and sends the push notification.
+func (p *NotificationProcessorImpl) dispatchFCMToUser(ctx context.Context, receiver *entities.NotificationReceiver, notification *entities.Notification) {
+	if p.fcmClient == nil {
+		return
+	}
+
+	devices, err := p.userDeviceRepo.GetByUserID(ctx, receiver.UserID)
+	if err != nil || len(devices) == 0 {
+		return
+	}
+
+	// Build FCM data payload.
+	data := map[string]string{
+		"notification_id":          notification.ID.String(),
+		"notification_receiver_id": receiver.ID.String(),
+		"type":                     notification.Type,
+		"category":                 notification.Category,
+		"action_url":               notification.ActionURL,
+	}
+
+	// Collect valid FCM tokens and create delivery records.
+	tokens := make([]string, 0, len(devices))
+	deliveries := make([]*entities.NotificationDelivery, 0, len(devices))
+
+	for _, device := range devices {
+		if device.FCMToken == "" {
+			continue
+		}
+		tokens = append(tokens, device.FCMToken)
+		deliveries = append(deliveries, &entities.NotificationDelivery{
+			NotificationReceiverID: receiver.ID,
+			UserDeviceID:           device.ID,
+			Channel:                entities.NotificationChannelPush,
+			DeliveryStatus:         entities.NotificationDeliveryStatusPending,
+			Provider:               entities.NotificationProviderFirebase,
+		})
+	}
+
+	if len(tokens) == 0 {
+		return
+	}
+
+	// Persist delivery records before sending.
+	_ = p.deliveryRepo.BulkCreate(ctx, deliveries)
+
+	// Send via FCM multicast.
+	now := time.Now()
+	sendErr := p.fcmClient.SendMulticastNotification(ctx, tokens, notification.Title, notification.Body, data)
+
+	// Update delivery status.
+	for _, delivery := range deliveries {
+		if sendErr != nil {
+			delivery.DeliveryStatus = entities.NotificationDeliveryStatusFailed
+			delivery.FailedAt = &now
+			delivery.FailureReason = sendErr.Error()
+		} else {
+			delivery.DeliveryStatus = entities.NotificationDeliveryStatusSent
+			delivery.SentAt = &now
+		}
+		_ = p.deliveryRepo.Update(ctx, delivery)
+	}
+}

internal/processor/order_processor.go

@@ -108,6 +108,7 @@ type OrderProcessorImpl struct {
 	productRecipeRepo        *repository.ProductRecipeRepository
 	ingredientRepo           IngredientRepository
 	inventoryMovementService InventoryMovementService
+	productOutletPriceRepo   repository.ProductOutletPriceRepository
 }
 
 func NewOrderProcessorImpl(
@@ -126,6 +127,7 @@ func NewOrderProcessorImpl(
 	productRecipeRepo *repository.ProductRecipeRepository,
 	ingredientRepo IngredientRepository,
 	inventoryMovementService InventoryMovementService,
+	productOutletPriceRepo repository.ProductOutletPriceRepository,
 ) *OrderProcessorImpl {
 	return &OrderProcessorImpl{
 		orderRepo:                orderRepo,
@@ -144,6 +146,7 @@ func NewOrderProcessorImpl(
 		productRecipeRepo:        productRecipeRepo,
 		ingredientRepo:           ingredientRepo,
 		inventoryMovementService: inventoryMovementService,
+		productOutletPriceRepo:   productOutletPriceRepo,
 	}
 }
 
@@ -170,6 +173,12 @@ func (p *OrderProcessorImpl) CreateOrder(ctx context.Context, req *models.Create
 		unitPrice := product.Price
 		unitCost := product.Cost
 
+		if p.productOutletPriceRepo != nil {
+			if outletPrice, err := p.productOutletPriceRepo.GetByProductAndOutlet(ctx, itemReq.ProductID, req.OutletID); err == nil {
+				unitPrice = outletPrice.Price
+			}
+		}
+
 		if itemReq.ProductVariantID != nil {
 			variant, err := p.productVariantRepo.GetByID(ctx, *itemReq.ProductVariantID)
 			if err != nil {
@@ -293,6 +302,12 @@ func (p *OrderProcessorImpl) AddToOrder(ctx context.Context, orderID uuid.UUID,
 		unitPrice := product.Price
 		unitCost := product.Cost
 
+		if p.productOutletPriceRepo != nil {
+			if outletPrice, err := p.productOutletPriceRepo.GetByProductAndOutlet(ctx, itemReq.ProductID, order.OutletID); err == nil {
+				unitPrice = outletPrice.Price
+			}
+		}
+
 		// Handle product variant if specified
 		if itemReq.ProductVariantID != nil {
 			variant, err := p.productVariantRepo.GetByID(ctx, *itemReq.ProductVariantID)

internal/processor/product_outlet_price_processor.go

@@ -0,0 +1,121 @@
+package processor
+
+import (
+	"context"
+	"fmt"
+
+	"apskel-pos-be/internal/entities"
+	"apskel-pos-be/internal/mappers"
+	"apskel-pos-be/internal/models"
+	"apskel-pos-be/internal/repository"
+
+	"github.com/google/uuid"
+)
+
+type ProductOutletPriceProcessor interface {
+	Upsert(ctx context.Context, req *models.CreateProductOutletPriceRequest) (*models.ProductOutletPrice, error)
+	GetByProductAndOutlet(ctx context.Context, productID, outletID uuid.UUID) (*models.ProductOutletPrice, error)
+	GetByProduct(ctx context.Context, productID uuid.UUID) ([]*models.ProductOutletPrice, error)
+	GetByOutlet(ctx context.Context, outletID uuid.UUID) ([]*models.ProductOutletPrice, error)
+	Delete(ctx context.Context, id uuid.UUID) error
+	ResolvePrice(ctx context.Context, productID, outletID uuid.UUID, fallbackPrice float64) float64
+	BulkUpsert(ctx context.Context, productID uuid.UUID, prices []models.CreateProductOutletPriceRequest) ([]*models.ProductOutletPrice, error)
+}
+
+type ProductOutletPriceProcessorImpl struct {
+	repo        repository.ProductOutletPriceRepository
+	productRepo ProductRepository
+	outletRepo  OutletRepository
+}
+
+func NewProductOutletPriceProcessorImpl(repo repository.ProductOutletPriceRepository, productRepo ProductRepository, outletRepo OutletRepository) *ProductOutletPriceProcessorImpl {
+	return &ProductOutletPriceProcessorImpl{
+		repo:        repo,
+		productRepo: productRepo,
+		outletRepo:  outletRepo,
+	}
+}
+
+func (p *ProductOutletPriceProcessorImpl) Upsert(ctx context.Context, req *models.CreateProductOutletPriceRequest) (*models.ProductOutletPrice, error) {
+	if _, err := p.productRepo.GetByID(ctx, req.ProductID); err != nil {
+		return nil, fmt.Errorf("product not found: %w", err)
+	}
+
+	if _, err := p.outletRepo.GetByID(ctx, req.OutletID); err != nil {
+		return nil, fmt.Errorf("outlet not found: %w", err)
+	}
+
+	entity := &entities.ProductOutletPrice{
+		ProductID: req.ProductID,
+		OutletID:  req.OutletID,
+		Price:     req.Price,
+	}
+
+	if err := p.repo.Upsert(ctx, entity); err != nil {
+		return nil, fmt.Errorf("failed to upsert product outlet price: %w", err)
+	}
+
+	actual, err := p.repo.GetByProductAndOutlet(ctx, req.ProductID, req.OutletID)
+	if err != nil {
+		return nil, fmt.Errorf("failed to retrieve upserted product outlet price: %w", err)
+	}
+
+	return mappers.ProductOutletPriceEntityToModel(actual), nil
+}
+
+func (p *ProductOutletPriceProcessorImpl) GetByProductAndOutlet(ctx context.Context, productID, outletID uuid.UUID) (*models.ProductOutletPrice, error) {
+	entity, err := p.repo.GetByProductAndOutlet(ctx, productID, outletID)
+	if err != nil {
+		return nil, fmt.Errorf("product outlet price not found: %w", err)
+	}
+
+	return mappers.ProductOutletPriceEntityToModel(entity), nil
+}
+
+func (p *ProductOutletPriceProcessorImpl) GetByProduct(ctx context.Context, productID uuid.UUID) ([]*models.ProductOutletPrice, error) {
+	entities, err := p.repo.GetByProduct(ctx, productID)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get product outlet prices: %w", err)
+	}
+
+	return mappers.ProductOutletPriceEntitiesToModels(entities), nil
+}
+
+func (p *ProductOutletPriceProcessorImpl) GetByOutlet(ctx context.Context, outletID uuid.UUID) ([]*models.ProductOutletPrice, error) {
+	entities, err := p.repo.GetByOutlet(ctx, outletID)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get outlet prices: %w", err)
+	}
+
+	return mappers.ProductOutletPriceEntitiesToModels(entities), nil
+}
+
+func (p *ProductOutletPriceProcessorImpl) Delete(ctx context.Context, id uuid.UUID) error {
+	if err := p.repo.Delete(ctx, id); err != nil {
+		return fmt.Errorf("failed to delete product outlet price: %w", err)
+	}
+	return nil
+}
+
+func (p *ProductOutletPriceProcessorImpl) ResolvePrice(ctx context.Context, productID, outletID uuid.UUID, fallbackPrice float64) float64 {
+	outletPrice, err := p.repo.GetByProductAndOutlet(ctx, productID, outletID)
+	if err != nil {
+		return fallbackPrice
+	}
+	return outletPrice.Price
+}
+
+func (p *ProductOutletPriceProcessorImpl) BulkUpsert(ctx context.Context, productID uuid.UUID, prices []models.CreateProductOutletPriceRequest) ([]*models.ProductOutletPrice, error) {
+	var results []*models.ProductOutletPrice
+
+	for _, req := range prices {
+		req.ProductID = productID
+		result, err := p.Upsert(ctx, &req)
+		if err != nil {
+			return nil, fmt.Errorf("failed to upsert price for outlet %s: %w", req.OutletID, err)
+		}
+		results = append(results, result)
+	}
+
+	return results, nil
+}

internal/processor/product_processor.go

@@ -16,8 +16,9 @@ type ProductProcessor interface {
 	CreateProduct(ctx context.Context, req *models.CreateProductRequest) (*models.ProductResponse, error)
 	UpdateProduct(ctx context.Context, id uuid.UUID, req *models.UpdateProductRequest) (*models.ProductResponse, error)
 	DeleteProduct(ctx context.Context, id uuid.UUID) error
-	GetProductByID(ctx context.Context, id uuid.UUID) (*models.ProductResponse, error)
+	GetProductByID(ctx context.Context, id uuid.UUID, outletID uuid.UUID) (*models.ProductResponse, error)
 	ListProducts(ctx context.Context, filters map[string]interface{}, page, limit int) ([]models.ProductResponse, int, error)
+	ListProductsAll(ctx context.Context, filters map[string]interface{}, page, limit int) ([]models.ProductResponse, int, error)
 }
 
 type ProductRepository interface {
@@ -32,6 +33,7 @@ type ProductRepository interface {
 	Update(ctx context.Context, product *entities.Product) error
 	Delete(ctx context.Context, id uuid.UUID) error
 	List(ctx context.Context, filters map[string]interface{}, limit, offset int) ([]*entities.Product, int64, error)
+	ListWithOutletPrice(ctx context.Context, filters map[string]interface{}, outletID uuid.UUID, limit, offset int) ([]*entities.Product, int64, error)
 	Count(ctx context.Context, filters map[string]interface{}) (int64, error)
 	GetBySKU(ctx context.Context, organizationID uuid.UUID, sku string) (*entities.Product, error)
 	ExistsBySKU(ctx context.Context, organizationID uuid.UUID, sku string, excludeID *uuid.UUID) (bool, error)
@@ -47,15 +49,17 @@ type ProductProcessorImpl struct {
 	productVariantRepo repository.ProductVariantRepository
 	inventoryRepo      repository.InventoryRepository
 	outletRepo         OutletRepository
+	outletPriceRepo    repository.ProductOutletPriceRepository
 }
 
-func NewProductProcessorImpl(productRepo ProductRepository, categoryRepo CategoryRepository, productVariantRepo repository.ProductVariantRepository, inventoryRepo repository.InventoryRepository, outletRepo OutletRepository) *ProductProcessorImpl {
+func NewProductProcessorImpl(productRepo ProductRepository, categoryRepo CategoryRepository, productVariantRepo repository.ProductVariantRepository, inventoryRepo repository.InventoryRepository, outletRepo OutletRepository, outletPriceRepo repository.ProductOutletPriceRepository) *ProductProcessorImpl {
 	return &ProductProcessorImpl{
 		productRepo:        productRepo,
 		categoryRepo:       categoryRepo,
 		productVariantRepo: productVariantRepo,
 		inventoryRepo:      inventoryRepo,
 		outletRepo:         outletRepo,
+		outletPriceRepo:    outletPriceRepo,
 	}
 }
 
@@ -214,19 +218,79 @@ func (p *ProductProcessorImpl) DeleteProduct(ctx context.Context, id uuid.UUID)
 	return nil
 }
 
-func (p *ProductProcessorImpl) GetProductByID(ctx context.Context, id uuid.UUID) (*models.ProductResponse, error) {
+func (p *ProductProcessorImpl) GetProductByID(ctx context.Context, id uuid.UUID, outletID uuid.UUID) (*models.ProductResponse, error) {
 	productEntity, err := p.productRepo.GetWithCategory(ctx, id)
 	if err != nil {
 		return nil, fmt.Errorf("product not found: %w", err)
 	}
 
 	response := mappers.ProductEntityToResponse(productEntity)
+
+	if outletID != uuid.Nil {
+		// Attach outlet-specific price
+		outletPrice, err := p.outletPriceRepo.GetByProductAndOutlet(ctx, id, outletID)
+		if err == nil {
+			response.OutletPrice = &outletPrice.Price
+		}
+	} else {
+		// No outlet context — return all outlet prices for this product
+		outletPrices, err := p.outletPriceRepo.GetByProductWithOutlet(ctx, id)
+		if err == nil && len(outletPrices) > 0 {
+			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,
+				}
+			}
+			response.OutletPrices = prices
+		}
+	}
+
 	return response, nil
 }
 
 func (p *ProductProcessorImpl) ListProducts(ctx context.Context, filters map[string]interface{}, page, limit int) ([]models.ProductResponse, int, error) {
 	offset := (page - 1) * limit
 
+	// Extract outletID from filters — it's not a products column so remove it before querying
+	var outletID uuid.UUID
+	if oid, ok := filters["outlet_id"]; ok {
+		outletID = oid.(uuid.UUID)
+		delete(filters, "outlet_id")
+	}
+
+	// Use the JOIN-based query when an outlet is specified so we get outlet-specific
+	// prices in a single round-trip; fall back to the plain List otherwise.
+	var (
+		productEntities []*entities.Product
+		total           int64
+		err             error
+	)
+	if outletID != uuid.Nil {
+		productEntities, total, err = p.productRepo.ListWithOutletPrice(ctx, filters, outletID, limit, offset)
+	} else {
+		productEntities, total, err = p.productRepo.List(ctx, filters, limit, offset)
+	}
+	if err != nil {
+		return nil, 0, fmt.Errorf("failed to list products: %w", err)
+	}
+
+	responses := make([]models.ProductResponse, len(productEntities))
+	for i, entity := range productEntities {
+		response := mappers.ProductEntityToResponse(entity)
+		if response != nil {
+			responses[i] = *response
+		}
+	}
+
+	return responses, int(total), nil
+}
+
+func (p *ProductProcessorImpl) ListProductsAll(ctx context.Context, filters map[string]interface{}, page, limit int) ([]models.ProductResponse, int, error) {
+	offset := (page - 1) * limit
+
 	productEntities, total, err := p.productRepo.List(ctx, filters, limit, offset)
 	if err != nil {
 		return nil, 0, fmt.Errorf("failed to list products: %w", err)

internal/processor/table_processor.go

@@ -4,6 +4,7 @@ import (
 	"apskel-pos-be/internal/constants"
 	"apskel-pos-be/internal/entities"
 	"apskel-pos-be/internal/models"
+	"apskel-pos-be/internal/pkg/tabletoken"
 	"apskel-pos-be/internal/repository"
 	"context"
 	"errors"
@@ -212,6 +213,15 @@ func (p *TableProcessor) GetTokenByID(ctx context.Context, id uuid.UUID) (string
 	if err != nil {
 		return "", err
 	}
+
+	if _, _, _, err := tabletoken.Decode(table.Token); err != nil {
+		newToken := tabletoken.Encode(table.ID, table.OrganizationID, table.OutletID)
+		if updateErr := p.tableRepo.UpdateToken(ctx, table.ID, newToken); updateErr != nil {
+			return "", updateErr
+		}
+		return newToken, nil
+	}
+
 	return table.Token, nil
 }
 

internal/processor/user_device_processor.go

@@ -0,0 +1,165 @@
+package processor
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"apskel-pos-be/internal/entities"
+	"apskel-pos-be/internal/mappers"
+	"apskel-pos-be/internal/models"
+
+	"github.com/google/uuid"
+)
+
+type UserDeviceRepository interface {
+	Create(ctx context.Context, device *entities.UserDevice) error
+	GetByID(ctx context.Context, id uuid.UUID) (*entities.UserDevice, error)
+	GetByDeviceID(ctx context.Context, deviceID string, userID uuid.UUID) (*entities.UserDevice, error)
+	GetByUserID(ctx context.Context, userID uuid.UUID) ([]*entities.UserDevice, error)
+	Update(ctx context.Context, device *entities.UserDevice) error
+	Delete(ctx context.Context, id uuid.UUID) error
+	DeleteByUserID(ctx context.Context, userID uuid.UUID) error
+	List(ctx context.Context, filters map[string]interface{}, limit, offset int) ([]*entities.UserDevice, int64, error)
+}
+
+type UserDeviceProcessor interface {
+	RegisterDevice(ctx context.Context, req *models.RegisterUserDeviceRequest) (*models.UserDeviceResponse, error)
+	UpdateDevice(ctx context.Context, id uuid.UUID, req *models.UpdateUserDeviceRequest) (*models.UserDeviceResponse, error)
+	DeleteDevice(ctx context.Context, id uuid.UUID) error
+	GetDeviceByID(ctx context.Context, id uuid.UUID) (*models.UserDeviceResponse, error)
+	GetDevicesByUserID(ctx context.Context, userID uuid.UUID) ([]*models.UserDeviceResponse, error)
+	ListDevices(ctx context.Context, filters map[string]interface{}, page, limit int) ([]*models.UserDeviceResponse, int, error)
+}
+
+type UserDeviceProcessorImpl struct {
+	userDeviceRepo UserDeviceRepository
+}
+
+func NewUserDeviceProcessorImpl(userDeviceRepo UserDeviceRepository) *UserDeviceProcessorImpl {
+	return &UserDeviceProcessorImpl{
+		userDeviceRepo: userDeviceRepo,
+	}
+}
+
+func (p *UserDeviceProcessorImpl) RegisterDevice(ctx context.Context, req *models.RegisterUserDeviceRequest) (*models.UserDeviceResponse, error) {
+	// Upsert: if device already registered for this user, update it
+	existing, err := p.userDeviceRepo.GetByDeviceID(ctx, req.DeviceID, req.UserID)
+	if err == nil && existing != nil {
+		existing.DeviceName = req.DeviceName
+		existing.DeviceType = req.DeviceType
+		existing.Platform = req.Platform
+		existing.FCMToken = req.FCMToken
+		existing.AppVersion = req.AppVersion
+		existing.OsVersion = req.OsVersion
+		existing.IPAddress = req.IPAddress
+		now := time.Now()
+		existing.LastActiveAt = &now
+
+		if err := p.userDeviceRepo.Update(ctx, existing); err != nil {
+			return nil, fmt.Errorf("failed to update device: %w", err)
+		}
+
+		return mappers.UserDeviceEntityToResponse(existing), nil
+	}
+
+	deviceEntity := &entities.UserDevice{
+		UserID:     req.UserID,
+		DeviceID:   req.DeviceID,
+		DeviceName: req.DeviceName,
+		DeviceType: req.DeviceType,
+		Platform:   req.Platform,
+		FCMToken:   req.FCMToken,
+		AppVersion: req.AppVersion,
+		OsVersion:  req.OsVersion,
+		IPAddress:  req.IPAddress,
+	}
+
+	now := time.Now()
+	deviceEntity.LastActiveAt = &now
+
+	if err := p.userDeviceRepo.Create(ctx, deviceEntity); err != nil {
+		return nil, fmt.Errorf("failed to register device: %w", err)
+	}
+
+	return mappers.UserDeviceEntityToResponse(deviceEntity), nil
+}
+
+func (p *UserDeviceProcessorImpl) UpdateDevice(ctx context.Context, id uuid.UUID, req *models.UpdateUserDeviceRequest) (*models.UserDeviceResponse, error) {
+	deviceEntity, err := p.userDeviceRepo.GetByID(ctx, id)
+	if err != nil {
+		return nil, fmt.Errorf("device not found: %w", err)
+	}
+
+	if req.DeviceName != "" {
+		deviceEntity.DeviceName = req.DeviceName
+	}
+	if req.DeviceType != "" {
+		deviceEntity.DeviceType = req.DeviceType
+	}
+	if req.Platform != "" {
+		deviceEntity.Platform = req.Platform
+	}
+	if req.FCMToken != "" {
+		deviceEntity.FCMToken = req.FCMToken
+	}
+	if req.AppVersion != "" {
+		deviceEntity.AppVersion = req.AppVersion
+	}
+	if req.OsVersion != "" {
+		deviceEntity.OsVersion = req.OsVersion
+	}
+
+	now := time.Now()
+	deviceEntity.LastActiveAt = &now
+
+	if err := p.userDeviceRepo.Update(ctx, deviceEntity); err != nil {
+		return nil, fmt.Errorf("failed to update device: %w", err)
+	}
+
+	return mappers.UserDeviceEntityToResponse(deviceEntity), nil
+}
+
+func (p *UserDeviceProcessorImpl) DeleteDevice(ctx context.Context, id uuid.UUID) error {
+	_, err := p.userDeviceRepo.GetByID(ctx, id)
+	if err != nil {
+		return fmt.Errorf("device not found: %w", err)
+	}
+
+	if err := p.userDeviceRepo.Delete(ctx, id); err != nil {
+		return fmt.Errorf("failed to delete device: %w", err)
+	}
+
+	return nil
+}
+
+func (p *UserDeviceProcessorImpl) GetDeviceByID(ctx context.Context, id uuid.UUID) (*models.UserDeviceResponse, error) {
+	deviceEntity, err := p.userDeviceRepo.GetByID(ctx, id)
+	if err != nil {
+		return nil, fmt.Errorf("device not found: %w", err)
+	}
+
+	return mappers.UserDeviceEntityToResponse(deviceEntity), nil
+}
+
+func (p *UserDeviceProcessorImpl) GetDevicesByUserID(ctx context.Context, userID uuid.UUID) ([]*models.UserDeviceResponse, error) {
+	deviceEntities, err := p.userDeviceRepo.GetByUserID(ctx, userID)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get devices: %w", err)
+	}
+
+	return mappers.UserDeviceEntitiesToResponses(deviceEntities), nil
+}
+
+func (p *UserDeviceProcessorImpl) ListDevices(ctx context.Context, filters map[string]interface{}, page, limit int) ([]*models.UserDeviceResponse, int, error) {
+	offset := (page - 1) * limit
+	deviceEntities, total, err := p.userDeviceRepo.List(ctx, filters, limit, offset)
+	if err != nil {
+		return nil, 0, fmt.Errorf("failed to list devices: %w", err)
+	}
+
+	deviceResponses := mappers.UserDeviceEntitiesToResponses(deviceEntities)
+	totalPages := int((total + int64(limit) - 1) / int64(limit))
+
+	return deviceResponses, totalPages, nil
+}

internal/processor/user_processor.go

@@ -253,17 +253,3 @@ func (p *UserProcessorImpl) UpdateUserOutlet(ctx context.Context, userID uuid.UU
 
 	return mappers.UserEntityToResponse(existingUser), nil
 }
-
-func (p *UserProcessorImpl) UpdateFcmToken(ctx context.Context, userID uuid.UUID, fcmToken string) error {
-	_, err := p.userRepo.GetByID(ctx, userID)
-	if err != nil {
-		return fmt.Errorf("user not found: %w", err)
-	}
-
-	err = p.userRepo.UpdateFcmToken(ctx, userID, fcmToken)
-	if err != nil {
-		return fmt.Errorf("failed to update FCM token: %w", err)
-	}
-
-	return nil
-}

internal/processor/user_repository.go

@@ -19,6 +19,4 @@ type UserRepository interface {
 	UpdateActiveStatus(ctx context.Context, id uuid.UUID, isActive bool) error
 	List(ctx context.Context, filters map[string]interface{}, limit, offset int) ([]*entities.User, int64, error)
 	Count(ctx context.Context, filters map[string]interface{}) (int64, error)
-	UpdateFcmToken(ctx context.Context, id uuid.UUID, fcmToken string) error
-	GetUsersWithFcmTokenByOrganization(ctx context.Context, organizationID uuid.UUID) ([]*entities.User, error)
 }

internal/repository/analytics_repository.go

@@ -29,6 +29,13 @@ func NewAnalyticsRepositoryImpl(db *gorm.DB) *AnalyticsRepositoryImpl {
 	}
 }
 
+func (r *AnalyticsRepositoryImpl) resolveOutletID(query *gorm.DB, outletID *uuid.UUID, column string) *gorm.DB {
+	if outletID != nil {
+		return query.Where(column+" = ?", *outletID)
+	}
+	return query
+}
+
 func (r *AnalyticsRepositoryImpl) GetPaymentMethodAnalytics(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time) ([]*entities.PaymentMethodAnalytics, error) {
 	var results []*entities.PaymentMethodAnalytics
 
@@ -50,9 +57,7 @@ func (r *AnalyticsRepositoryImpl) GetPaymentMethodAnalytics(ctx context.Context,
 		Where("p.status = ?", entities.PaymentTransactionStatusCompleted).
 		Where("o.created_at >= ? AND o.created_at <= ?", dateFrom, dateTo)
 
-	if outletID != nil {
-		query = query.Where("o.outlet_id = ?", *outletID)
-	}
+	query = r.resolveOutletID(query, outletID, "o.outlet_id")
 
 	err := query.
 		Group("pm.id, pm.name, pm.type").
@@ -180,9 +185,7 @@ func (r *AnalyticsRepositoryImpl) GetProductAnalytics(ctx context.Context, organ
 		Where("oi.status != ?", entities.OrderItemStatusCancelled).
 		Where("o.created_at >= ? AND o.created_at <= ?", dateFrom, dateTo)
 
-	if outletID != nil {
-		query = query.Where("o.outlet_id = ?", *outletID)
-	}
+	query = r.resolveOutletID(query, outletID, "o.outlet_id")
 
 	err := query.
 		Group("p.id, p.name, p.cost, c.id, c.name, c.order, mahpp.hpp_per_unit").
@@ -235,9 +238,7 @@ func (r *AnalyticsRepositoryImpl) GetProductAnalyticsPerCategory(ctx context.Con
 		Where("oi.status != ?", entities.OrderItemStatusCancelled).
 		Where("o.created_at >= ? AND o.created_at <= ?", dateFrom, dateTo)
 
-	if outletID != nil {
-		query = query.Where("o.outlet_id = ?", *outletID)
-	}
+	query = r.resolveOutletID(query, outletID, "o.outlet_id")
 
 	err := query.
 		Group("c.id, c.name").
@@ -267,9 +268,7 @@ func (r *AnalyticsRepositoryImpl) GetDashboardOverview(ctx context.Context, orga
 		Where("o.organization_id = ?", organizationID).
 		Where("o.created_at >= ? AND o.created_at <= ?", dateFrom, dateTo)
 
-	if outletID != nil {
-		query = query.Where("o.outlet_id = ?", *outletID)
-	}
+	query = r.resolveOutletID(query, outletID, "o.outlet_id")
 
 	err := query.Scan(&result).Error
 	if err != nil {
@@ -320,9 +319,7 @@ func (r *AnalyticsRepositoryImpl) GetProfitLossAnalytics(ctx context.Context, or
 		Where("o.is_void = false AND o.is_refund = false").
 		Where("o.created_at >= ? AND o.created_at <= ?", dateFrom, dateTo)
 
-	if outletID != nil {
-		summaryQuery = summaryQuery.Where("o.outlet_id = ?", *outletID)
-	}
+	summaryQuery = r.resolveOutletID(summaryQuery, outletID, "o.outlet_id")
 
 	err := summaryQuery.Scan(&summary).Error
 	if err != nil {
@@ -374,9 +371,7 @@ func (r *AnalyticsRepositoryImpl) GetProfitLossAnalytics(ctx context.Context, or
 		Group(timeFormat).
 		Order(timeFormat)
 
-	if outletID != nil {
-		dataQuery = dataQuery.Where("o.outlet_id = ?", *outletID)
-	}
+	dataQuery = r.resolveOutletID(dataQuery, outletID, "o.outlet_id")
 
 	err = dataQuery.Scan(&data).Error
 	if err != nil {
@@ -419,9 +414,7 @@ func (r *AnalyticsRepositoryImpl) GetProfitLossAnalytics(ctx context.Context, or
 		Order("p.name ASC").
 		Limit(1000)
 
-	if outletID != nil {
-		productQuery = productQuery.Where("o.outlet_id = ?", *outletID)
-	}
+	productQuery = r.resolveOutletID(productQuery, outletID, "o.outlet_id")
 
 	err = productQuery.Scan(&productData).Error
 	if err != nil {

internal/repository/inventory_repository.go

@@ -11,6 +11,7 @@ import (
 
 	"github.com/google/uuid"
 	"gorm.io/gorm"
+	"gorm.io/gorm/clause"
 )
 
 type InventoryRepository interface {
@@ -278,7 +279,12 @@ func (r *InventoryRepositoryImpl) UpdateReorderLevel(ctx context.Context, id uui
 }
 
 func (r *InventoryRepositoryImpl) BulkCreate(ctx context.Context, inventoryItems []*entities.Inventory) error {
-	return r.db.WithContext(ctx).CreateInBatches(inventoryItems, 100).Error
+	return r.db.WithContext(ctx).
+		Clauses(clause.OnConflict{
+			Columns:   []clause.Column{{Name: "outlet_id"}, {Name: "product_id"}},
+			DoNothing: true,
+		}).
+		CreateInBatches(inventoryItems, 100).Error
 }
 
 func (r *InventoryRepositoryImpl) BulkUpdate(ctx context.Context, inventoryItems []*entities.Inventory) error {
@@ -301,21 +307,25 @@ func (r *InventoryRepositoryImpl) BulkAdjustQuantity(ctx context.Context, adjust
 	return r.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
 		for productID, delta := range adjustments {
 			var inventory entities.Inventory
-			if err := tx.Where("product_id = ? AND outlet_id = ?", productID, outletID).First(&inventory).Error; err != nil {
-				if errors.Is(err, gorm.ErrRecordNotFound) {
-					// Inventory doesn't exist, create it with initial quantity
+			err := tx.Set("gorm:query_option", "FOR UPDATE").
+				Where("product_id = ? AND outlet_id = ?", productID, outletID).
+				First(&inventory).Error
+			if err != nil {
+				if !errors.Is(err, gorm.ErrRecordNotFound) {
+					return err
+				}
+				// Use FirstOrCreate to handle race conditions — avoids duplicate key
+				// if another transaction already inserted this row concurrently.
 				inventory = entities.Inventory{
 					ProductID:    productID,
 					OutletID:     outletID,
 					Quantity:     0,
 					ReorderLevel: 0,
 				}
-					if err := tx.Create(&inventory).Error; err != nil {
+				if err := tx.Where(entities.Inventory{ProductID: productID, OutletID: outletID}).
+					FirstOrCreate(&inventory).Error; err != nil {
 					return fmt.Errorf("failed to create inventory record for product %s: %w", productID, err)
 				}
-				} else {
-					return err
-				}
 			}
 
 			inventory.UpdateQuantity(delta)

internal/repository/notification_delivery_repository.go

@@ -0,0 +1,59 @@
+package repository
+
+import (
+	"context"
+
+	"apskel-pos-be/internal/entities"
+
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+)
+
+type NotificationDeliveryRepository interface {
+	Create(ctx context.Context, delivery *entities.NotificationDelivery) error
+	BulkCreate(ctx context.Context, deliveries []*entities.NotificationDelivery) error
+	GetByID(ctx context.Context, id uuid.UUID) (*entities.NotificationDelivery, error)
+	Update(ctx context.Context, delivery *entities.NotificationDelivery) error
+	ListByReceiverID(ctx context.Context, receiverID uuid.UUID) ([]*entities.NotificationDelivery, error)
+}
+
+type NotificationDeliveryRepositoryImpl struct {
+	db *gorm.DB
+}
+
+func NewNotificationDeliveryRepository(db *gorm.DB) *NotificationDeliveryRepositoryImpl {
+	return &NotificationDeliveryRepositoryImpl{db: db}
+}
+
+func (r *NotificationDeliveryRepositoryImpl) Create(ctx context.Context, delivery *entities.NotificationDelivery) error {
+	return r.db.WithContext(ctx).Create(delivery).Error
+}
+
+func (r *NotificationDeliveryRepositoryImpl) BulkCreate(ctx context.Context, deliveries []*entities.NotificationDelivery) error {
+	if len(deliveries) == 0 {
+		return nil
+	}
+	return r.db.WithContext(ctx).Create(&deliveries).Error
+}
+
+func (r *NotificationDeliveryRepositoryImpl) GetByID(ctx context.Context, id uuid.UUID) (*entities.NotificationDelivery, error) {
+	var delivery entities.NotificationDelivery
+	err := r.db.WithContext(ctx).First(&delivery, "id = ?", id).Error
+	if err != nil {
+		return nil, err
+	}
+	return &delivery, nil
+}
+
+func (r *NotificationDeliveryRepositoryImpl) Update(ctx context.Context, delivery *entities.NotificationDelivery) error {
+	return r.db.WithContext(ctx).Save(delivery).Error
+}
+
+func (r *NotificationDeliveryRepositoryImpl) ListByReceiverID(ctx context.Context, receiverID uuid.UUID) ([]*entities.NotificationDelivery, error) {
+	var deliveries []*entities.NotificationDelivery
+	err := r.db.WithContext(ctx).
+		Where("notification_receiver_id = ?", receiverID).
+		Order("created_at DESC").
+		Find(&deliveries).Error
+	return deliveries, err
+}

internal/repository/notification_receiver_repository.go

@@ -0,0 +1,108 @@
+package repository
+
+import (
+	"context"
+
+	"apskel-pos-be/internal/entities"
+
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+)
+
+type NotificationReceiverRepository interface {
+	Create(ctx context.Context, receiver *entities.NotificationReceiver) error
+	BulkCreate(ctx context.Context, receivers []*entities.NotificationReceiver) error
+	GetByID(ctx context.Context, id uuid.UUID) (*entities.NotificationReceiver, error)
+	GetByNotificationAndUser(ctx context.Context, notificationID, userID uuid.UUID) (*entities.NotificationReceiver, error)
+	Update(ctx context.Context, receiver *entities.NotificationReceiver) error
+	ListByUserID(ctx context.Context, userID uuid.UUID, isRead *bool, limit, offset int) ([]*entities.NotificationReceiver, int64, error)
+	CountUnreadByUserID(ctx context.Context, userID uuid.UUID) (int64, error)
+	SoftDeleteByID(ctx context.Context, id uuid.UUID) error
+}
+
+type NotificationReceiverRepositoryImpl struct {
+	db *gorm.DB
+}
+
+func NewNotificationReceiverRepository(db *gorm.DB) *NotificationReceiverRepositoryImpl {
+	return &NotificationReceiverRepositoryImpl{db: db}
+}
+
+func (r *NotificationReceiverRepositoryImpl) Create(ctx context.Context, receiver *entities.NotificationReceiver) error {
+	return r.db.WithContext(ctx).Create(receiver).Error
+}
+
+func (r *NotificationReceiverRepositoryImpl) BulkCreate(ctx context.Context, receivers []*entities.NotificationReceiver) error {
+	if len(receivers) == 0 {
+		return nil
+	}
+	return r.db.WithContext(ctx).Create(&receivers).Error
+}
+
+func (r *NotificationReceiverRepositoryImpl) GetByID(ctx context.Context, id uuid.UUID) (*entities.NotificationReceiver, error) {
+	var receiver entities.NotificationReceiver
+	err := r.db.WithContext(ctx).
+		Preload("Notification").
+		First(&receiver, "id = ? AND is_deleted = false", id).Error
+	if err != nil {
+		return nil, err
+	}
+	return &receiver, nil
+}
+
+func (r *NotificationReceiverRepositoryImpl) GetByNotificationAndUser(ctx context.Context, notificationID, userID uuid.UUID) (*entities.NotificationReceiver, error) {
+	var receiver entities.NotificationReceiver
+	err := r.db.WithContext(ctx).
+		Where("notification_id = ? AND user_id = ? AND is_deleted = false", notificationID, userID).
+		First(&receiver).Error
+	if err != nil {
+		return nil, err
+	}
+	return &receiver, nil
+}
+
+func (r *NotificationReceiverRepositoryImpl) Update(ctx context.Context, receiver *entities.NotificationReceiver) error {
+	return r.db.WithContext(ctx).Save(receiver).Error
+}
+
+func (r *NotificationReceiverRepositoryImpl) ListByUserID(ctx context.Context, userID uuid.UUID, isRead *bool, limit, offset int) ([]*entities.NotificationReceiver, int64, error) {
+	var receivers []*entities.NotificationReceiver
+	var total int64
+
+	query := r.db.WithContext(ctx).
+		Model(&entities.NotificationReceiver{}).
+		Where("user_id = ? AND is_deleted = false", userID)
+
+	if isRead != nil {
+		query = query.Where("is_read = ?", *isRead)
+	}
+
+	if err := query.Count(&total).Error; err != nil {
+		return nil, 0, err
+	}
+
+	err := query.
+		Preload("Notification").
+		Order("created_at DESC").
+		Limit(limit).
+		Offset(offset).
+		Find(&receivers).Error
+
+	return receivers, total, err
+}
+
+func (r *NotificationReceiverRepositoryImpl) CountUnreadByUserID(ctx context.Context, userID uuid.UUID) (int64, error) {
+	var count int64
+	err := r.db.WithContext(ctx).
+		Model(&entities.NotificationReceiver{}).
+		Where("user_id = ? AND is_read = false AND is_deleted = false", userID).
+		Count(&count).Error
+	return count, err
+}
+
+func (r *NotificationReceiverRepositoryImpl) SoftDeleteByID(ctx context.Context, id uuid.UUID) error {
+	return r.db.WithContext(ctx).
+		Model(&entities.NotificationReceiver{}).
+		Where("id = ?", id).
+		Updates(map[string]interface{}{"is_deleted": true}).Error
+}

internal/repository/notification_repository.go

@@ -0,0 +1,64 @@
+package repository
+
+import (
+	"context"
+
+	"apskel-pos-be/internal/entities"
+
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+)
+
+type NotificationRepository interface {
+	Create(ctx context.Context, notification *entities.Notification) error
+	GetByID(ctx context.Context, id uuid.UUID) (*entities.Notification, error)
+	Update(ctx context.Context, notification *entities.Notification) error
+	Delete(ctx context.Context, id uuid.UUID) error
+	List(ctx context.Context, filters map[string]interface{}, limit, offset int) ([]*entities.Notification, int64, error)
+}
+
+type NotificationRepositoryImpl struct {
+	db *gorm.DB
+}
+
+func NewNotificationRepository(db *gorm.DB) *NotificationRepositoryImpl {
+	return &NotificationRepositoryImpl{db: db}
+}
+
+func (r *NotificationRepositoryImpl) Create(ctx context.Context, notification *entities.Notification) error {
+	return r.db.WithContext(ctx).Create(notification).Error
+}
+
+func (r *NotificationRepositoryImpl) GetByID(ctx context.Context, id uuid.UUID) (*entities.Notification, error) {
+	var notification entities.Notification
+	err := r.db.WithContext(ctx).First(&notification, "id = ?", id).Error
+	if err != nil {
+		return nil, err
+	}
+	return &notification, nil
+}
+
+func (r *NotificationRepositoryImpl) Update(ctx context.Context, notification *entities.Notification) error {
+	return r.db.WithContext(ctx).Save(notification).Error
+}
+
+func (r *NotificationRepositoryImpl) Delete(ctx context.Context, id uuid.UUID) error {
+	return r.db.WithContext(ctx).Delete(&entities.Notification{}, "id = ?", id).Error
+}
+
+func (r *NotificationRepositoryImpl) List(ctx context.Context, filters map[string]interface{}, limit, offset int) ([]*entities.Notification, int64, error) {
+	var notifications []*entities.Notification
+	var total int64
+
+	query := r.db.WithContext(ctx).Model(&entities.Notification{})
+	for key, value := range filters {
+		query = query.Where(key+" = ?", value)
+	}
+
+	if err := query.Count(&total).Error; err != nil {
+		return nil, 0, err
+	}
+
+	err := query.Order("created_at DESC").Limit(limit).Offset(offset).Find(&notifications).Error
+	return notifications, total, err
+}

internal/repository/organization_repository.go

@@ -99,3 +99,14 @@ func (r *OrganizationRepositoryImpl) GetByEmail(ctx context.Context, email strin
 	}
 	return &org, nil
 }
+
+// GetTotalOmset returns the total revenue from completed orders for an organization.
+func (r *OrganizationRepositoryImpl) GetTotalOmset(ctx context.Context, organizationID uuid.UUID) (float64, error) {
+	var total float64
+	err := r.db.WithContext(ctx).
+		Table("orders").
+		Where("organization_id = ? AND payment_status = ?", organizationID, "completed").
+		Select("COALESCE(SUM(total_amount), 0)").
+		Scan(&total).Error
+	return total, err
+}

internal/repository/product_outlet_price_repository.go

@@ -0,0 +1,85 @@
+package repository
+
+import (
+	"context"
+
+	"apskel-pos-be/internal/entities"
+
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+	"gorm.io/gorm/clause"
+)
+
+type ProductOutletPriceRepository interface {
+	GetByProductAndOutlet(ctx context.Context, productID, outletID uuid.UUID) (*entities.ProductOutletPrice, error)
+	GetByProduct(ctx context.Context, productID uuid.UUID) ([]*entities.ProductOutletPrice, error)
+	GetByProductWithOutlet(ctx context.Context, productID uuid.UUID) ([]*entities.ProductOutletPrice, error)
+	GetByOutlet(ctx context.Context, outletID uuid.UUID) ([]*entities.ProductOutletPrice, error)
+	GetByProductsAndOutlet(ctx context.Context, productIDs []uuid.UUID, outletID uuid.UUID) ([]*entities.ProductOutletPrice, error)
+	Upsert(ctx context.Context, price *entities.ProductOutletPrice) error
+	Delete(ctx context.Context, id uuid.UUID) error
+	GetByID(ctx context.Context, id uuid.UUID) (*entities.ProductOutletPrice, error)
+}
+
+type ProductOutletPriceRepositoryImpl struct {
+	db *gorm.DB
+}
+
+func NewProductOutletPriceRepositoryImpl(db *gorm.DB) *ProductOutletPriceRepositoryImpl {
+	return &ProductOutletPriceRepositoryImpl{
+		db: db,
+	}
+}
+
+func (r *ProductOutletPriceRepositoryImpl) GetByProductAndOutlet(ctx context.Context, productID, outletID uuid.UUID) (*entities.ProductOutletPrice, error) {
+	var price entities.ProductOutletPrice
+	err := r.db.WithContext(ctx).Where("product_id = ? AND outlet_id = ?", productID, outletID).First(&price).Error
+	if err != nil {
+		return nil, err
+	}
+	return &price, nil
+}
+
+func (r *ProductOutletPriceRepositoryImpl) GetByProduct(ctx context.Context, productID uuid.UUID) ([]*entities.ProductOutletPrice, error) {
+	var prices []*entities.ProductOutletPrice
+	err := r.db.WithContext(ctx).Where("product_id = ?", productID).Find(&prices).Error
+	return prices, err
+}
+
+func (r *ProductOutletPriceRepositoryImpl) GetByOutlet(ctx context.Context, outletID uuid.UUID) ([]*entities.ProductOutletPrice, error) {
+	var prices []*entities.ProductOutletPrice
+	err := r.db.WithContext(ctx).Where("outlet_id = ?", outletID).Find(&prices).Error
+	return prices, err
+}
+
+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
+}
+
+func (r *ProductOutletPriceRepositoryImpl) Delete(ctx context.Context, id uuid.UUID) error {
+	return r.db.WithContext(ctx).Delete(&entities.ProductOutletPrice{}, "id = ?", id).Error
+}
+
+func (r *ProductOutletPriceRepositoryImpl) GetByID(ctx context.Context, id uuid.UUID) (*entities.ProductOutletPrice, error) {
+	var price entities.ProductOutletPrice
+	err := r.db.WithContext(ctx).First(&price, "id = ?", id).Error
+	if err != nil {
+		return nil, err
+	}
+	return &price, nil
+}
+
+func (r *ProductOutletPriceRepositoryImpl) GetByProductsAndOutlet(ctx context.Context, productIDs []uuid.UUID, outletID uuid.UUID) ([]*entities.ProductOutletPrice, error) {
+	var prices []*entities.ProductOutletPrice
+	err := r.db.WithContext(ctx).Where("product_id IN ? AND outlet_id = ?", productIDs, outletID).Find(&prices).Error
+	return prices, err
+}
+
+func (r *ProductOutletPriceRepositoryImpl) GetByProductWithOutlet(ctx context.Context, productID uuid.UUID) ([]*entities.ProductOutletPrice, error) {
+	var prices []*entities.ProductOutletPrice
+	err := r.db.WithContext(ctx).Preload("Outlet").Where("product_id = ?", productID).Find(&prices).Error
+	return prices, err
+}

internal/repository/product_repository.go

@@ -189,3 +189,47 @@ func (r *ProductRepositoryImpl) GetLowCostProducts(ctx context.Context, organiza
 	err := r.db.WithContext(ctx).Where("organization_id = ? AND cost <= ? AND is_active = ?", organizationID, maxCost, true).Find(&products).Error
 	return products, err
 }
+
+// ListWithOutletPrice fetches products with the same filters as List, but overrides
+// each product's Price with the outlet-specific price from product_outlet_prices when
+// outletID is provided. A single LEFT JOIN is used so no second round-trip is needed.
+func (r *ProductRepositoryImpl) ListWithOutletPrice(ctx context.Context, filters map[string]interface{}, outletID uuid.UUID, limit, offset int) ([]*entities.Product, int64, error) {
+	var products []*entities.Product
+	var total int64
+
+	// Base query with category and variant preloads
+	query := r.db.WithContext(ctx).Model(&entities.Product{}).
+		Preload("Category").
+		Preload("ProductVariants")
+
+	// Apply filters
+	for key, value := range filters {
+		switch key {
+		case "search":
+			searchValue := "%" + value.(string) + "%"
+			query = query.Where("products.name ILIKE ? OR products.description ILIKE ? OR products.sku ILIKE ?", searchValue, searchValue, searchValue)
+		case "price_min":
+			query = query.Where("products.price >= ?", value)
+		case "price_max":
+			query = query.Where("products.price <= ?", value)
+		default:
+			query = query.Where("products."+key+" = ?", value)
+		}
+	}
+
+	// When outletID is provided, INNER JOIN product_outlet_prices so only products
+	// that have been explicitly assigned to this outlet are returned, with their
+	// outlet-specific price.
+	if outletID != uuid.Nil {
+		query = query.
+			Joins("INNER JOIN product_outlet_prices pop ON pop.product_id = products.id AND pop.outlet_id = ?", outletID).
+			Select("products.*, pop.price AS price")
+	}
+
+	if err := query.Count(&total).Error; err != nil {
+		return nil, 0, err
+	}
+
+	err := query.Limit(limit).Offset(offset).Find(&products).Error
+	return products, total, err
+}

internal/repository/table_repository.go

@@ -171,6 +171,13 @@ func (r *TableRepository) ReleaseTable(ctx context.Context, tableID uuid.UUID, p
 		}).Error
 }
 
+func (r *TableRepository) UpdateToken(ctx context.Context, tableID uuid.UUID, token string) error {
+	return r.db.WithContext(ctx).
+		Model(&entities.Table{}).
+		Where("id = ?", tableID).
+		Update("token", token).Error
+}
+
 func (r *TableRepository) GetByOrderID(ctx context.Context, orderID uuid.UUID) (*entities.Table, error) {
 	var table entities.Table
 	err := r.db.WithContext(ctx).

internal/repository/table_repository_interface.go

@@ -24,4 +24,5 @@ type TableRepositoryInterface interface {
 	OccupyTable(ctx context.Context, tableID, orderID uuid.UUID, startTime *time.Time) error
 	ReleaseTable(ctx context.Context, tableID uuid.UUID, paymentAmount float64) error
 	GetByOrderID(ctx context.Context, orderID uuid.UUID) (*entities.Table, error)
+	UpdateToken(ctx context.Context, tableID uuid.UUID, token string) error
 }

internal/repository/user_device_repository.go

@@ -0,0 +1,94 @@
+package repository
+
+import (
+	"context"
+	"strings"
+
+	"apskel-pos-be/internal/entities"
+
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+)
+
+type UserDeviceRepositoryImpl struct {
+	db *gorm.DB
+}
+
+func NewUserDeviceRepositoryImpl(db *gorm.DB) *UserDeviceRepositoryImpl {
+	return &UserDeviceRepositoryImpl{
+		db: db,
+	}
+}
+
+func (r *UserDeviceRepositoryImpl) Create(ctx context.Context, device *entities.UserDevice) error {
+	return r.db.WithContext(ctx).Create(device).Error
+}
+
+func (r *UserDeviceRepositoryImpl) GetByID(ctx context.Context, id uuid.UUID) (*entities.UserDevice, error) {
+	var device entities.UserDevice
+	err := r.db.WithContext(ctx).First(&device, "id = ?", id).Error
+	if err != nil {
+		return nil, err
+	}
+	return &device, nil
+}
+
+func (r *UserDeviceRepositoryImpl) GetByDeviceID(ctx context.Context, deviceID string, userID uuid.UUID) (*entities.UserDevice, error) {
+	var device entities.UserDevice
+	err := r.db.WithContext(ctx).Where("device_id = ? AND user_id = ?", deviceID, userID).First(&device).Error
+	if err != nil {
+		return nil, err
+	}
+	return &device, nil
+}
+
+func (r *UserDeviceRepositoryImpl) GetByUserID(ctx context.Context, userID uuid.UUID) ([]*entities.UserDevice, error) {
+	var devices []*entities.UserDevice
+	err := r.db.WithContext(ctx).Where("user_id = ?", userID).Order("created_at DESC").Find(&devices).Error
+	return devices, err
+}
+
+func (r *UserDeviceRepositoryImpl) Update(ctx context.Context, device *entities.UserDevice) error {
+	return r.db.WithContext(ctx).Save(device).Error
+}
+
+func (r *UserDeviceRepositoryImpl) Delete(ctx context.Context, id uuid.UUID) error {
+	return r.db.WithContext(ctx).Delete(&entities.UserDevice{}, "id = ?", id).Error
+}
+
+func (r *UserDeviceRepositoryImpl) DeleteByUserID(ctx context.Context, userID uuid.UUID) error {
+	return r.db.WithContext(ctx).Delete(&entities.UserDevice{}, "user_id = ?", userID).Error
+}
+
+func (r *UserDeviceRepositoryImpl) List(ctx context.Context, filters map[string]interface{}, limit, offset int) ([]*entities.UserDevice, int64, error) {
+	var devices []*entities.UserDevice
+	var total int64
+
+	query := r.db.WithContext(ctx).Model(&entities.UserDevice{})
+
+	for key, value := range filters {
+		switch key {
+		case "user_id":
+			query = query.Where("user_id = ?", value)
+		case "platform":
+			if platform, ok := value.(string); ok && platform != "" {
+				query = query.Where("platform = ?", platform)
+			}
+		case "search":
+			if searchStr, ok := value.(string); ok && searchStr != "" {
+				searchPattern := "%" + strings.ToLower(searchStr) + "%"
+				query = query.Where("LOWER(device_name) LIKE ? OR LOWER(device_id) LIKE ?",
+					searchPattern, searchPattern)
+			}
+		default:
+			query = query.Where(key+" = ?", value)
+		}
+	}
+
+	if err := query.Count(&total).Error; err != nil {
+		return nil, 0, err
+	}
+
+	err := query.Order("created_at DESC").Limit(limit).Offset(offset).Find(&devices).Error
+	return devices, total, err
+}

internal/repository/user_repository.go

@@ -61,6 +61,17 @@ func (r *UserRepositoryImpl) GetActiveUsers(ctx context.Context, organizationID
 	return users, err
 }
 
+func (r *UserRepositoryImpl) GetActiveByOutletID(ctx context.Context, organizationID, outletID uuid.UUID) ([]*entities.User, error) {
+	var users []*entities.User
+	err := r.db.WithContext(ctx).
+		Where(
+			"organization_id = ? AND is_active = ? AND (outlet_id = ? OR role IN ?)",
+			organizationID, true, outletID, []string{"admin", "manager"},
+		).
+		Find(&users).Error
+	return users, err
+}
+
 func (r *UserRepositoryImpl) Update(ctx context.Context, user *entities.User) error {
 	return r.db.WithContext(ctx).Save(user).Error
 }
@@ -110,17 +121,3 @@ func (r *UserRepositoryImpl) Count(ctx context.Context, filters map[string]inter
 	err := query.Count(&count).Error
 	return count, err
 }
-
-func (r *UserRepositoryImpl) UpdateFcmToken(ctx context.Context, id uuid.UUID, fcmToken string) error {
-	return r.db.WithContext(ctx).Model(&entities.User{}).
-		Where("id = ?", id).
-		Update("fcm_token", fcmToken).Error
-}
-
-func (r *UserRepositoryImpl) GetUsersWithFcmTokenByOrganization(ctx context.Context, organizationID uuid.UUID) ([]*entities.User, error) {
-	var users []*entities.User
-	err := r.db.WithContext(ctx).
-		Where("organization_id = ? AND is_active = ? AND fcm_token IS NOT NULL AND fcm_token != ''", organizationID, true).
-		Find(&users).Error
-	return users, err
-}

internal/router/router.go

@@ -46,12 +46,15 @@ type Router struct {
 	customerAuthHandler               *handler.CustomerAuthHandler
 	customerPointsHandler             *handler.CustomerPointsHandler
 	spinGameHandler                   *handler.SpinGameHandler
+	userDeviceHandler                 *handler.UserDeviceHandler
+	notificationHandler               *handler.NotificationHandler
 	selfOrderHandler                  *handler.SelfOrderHandler
+	productOutletPriceHandler         *handler.ProductOutletPriceHandler
 	authMiddleware                    *middleware.AuthMiddleware
 	customerAuthMiddleware            *middleware.CustomerAuthMiddleware
 }
 
-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, 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, 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 {
 
 	return &Router{
 		config:                            cfg,
@@ -70,7 +73,7 @@ func NewRouter(cfg *config.Config, healthHandler *handler.HealthHandler, authSer
 		paymentMethodHandler:              handler.NewPaymentMethodHandler(paymentMethodService, paymentMethodValidator),
 		analyticsHandler:                  handler.NewAnalyticsHandler(analyticsService, transformer.NewTransformer()),
 		reportHandler:                     handler.NewReportHandler(reportService, userService),
-		tableHandler:                      handler.NewTableHandler(tableService, tableValidator, cfg.Server.BaseUrl),
+		tableHandler:                      handler.NewTableHandler(tableService, tableValidator, cfg.Server.SelfOrderUrl),
 		unitHandler:                       handler.NewUnitHandler(unitService),
 		ingredientHandler:                 handler.NewIngredientHandler(ingredientService),
 		productRecipeHandler:              handler.NewProductRecipeHandler(productRecipeService),
@@ -90,7 +93,10 @@ func NewRouter(cfg *config.Config, healthHandler *handler.HealthHandler, authSer
 		authMiddleware:                    authMiddleware,
 		customerAuthMiddleware:            customerAuthMiddleware,
 		productVariantHandler:             handler.NewProductVariantHandler(productVariantService, productVariantValidator),
+		userDeviceHandler:                 handler.NewUserDeviceHandler(userDeviceService, userDeviceValidator),
+		notificationHandler:               handler.NewNotificationHandler(notificationService, notificationValidator),
 		selfOrderHandler:                  selfOrderHandler,
+		productOutletPriceHandler:         handler.NewProductOutletPriceHandler(productOutletPriceService, productOutletPriceValidator),
 	}
 }
 
@@ -153,7 +159,7 @@ func (r *Router) addAppRoutes(rg *gin.Engine) {
 			selfOrder.GET("/categories", r.selfOrderHandler.ListCategories)
 			selfOrder.GET("/menu", r.selfOrderHandler.GetMenu)
 			selfOrder.POST("/orders", r.selfOrderHandler.CreateOrder)
-			selfOrder.GET("/orders/:sessionId", r.selfOrderHandler.GetOrdersBySession)
+			selfOrder.GET("/orders/:session_id", r.selfOrderHandler.GetOrdersBySession)
 		}
 
 		organizations := v1.Group("/organizations")
@@ -219,11 +225,23 @@ func (r *Router) addAppRoutes(rg *gin.Engine) {
 			{
 				products.POST("", r.productHandler.CreateProduct)
 				products.GET("", r.productHandler.ListProducts)
+				products.GET("/all", r.productHandler.ListProductAll)
 				products.GET("/:id", r.productHandler.GetProduct)
 				products.PUT("/:id", r.productHandler.UpdateProduct)
 				products.DELETE("/:id", r.productHandler.DeleteProduct)
 			}
 
+			productOutletPrices := protected.Group("/product-outlet-prices")
+			productOutletPrices.Use(r.authMiddleware.RequireAdminOrManager())
+			{
+				productOutletPrices.POST("", r.productOutletPriceHandler.Upsert)
+				productOutletPrices.POST("/bulk", r.productOutletPriceHandler.BulkUpsert)
+				productOutletPrices.GET("/product/:product_id", r.productOutletPriceHandler.GetByProduct)
+				productOutletPrices.GET("/outlet/:outlet_id", r.productOutletPriceHandler.GetByOutlet)
+				productOutletPrices.GET("/product/:product_id/outlet/:outlet_id", r.productOutletPriceHandler.GetByProductAndOutlet)
+				productOutletPrices.DELETE("/:id", r.productOutletPriceHandler.Delete)
+			}
+
 			productVariants := protected.Group("/product-variants")
 			{
 				productVariants.POST("", r.productVariantHandler.CreateProductVariant)
@@ -571,6 +589,42 @@ func (r *Router) addAppRoutes(rg *gin.Engine) {
 				// Reports
 				outlets.GET("/:outlet_id/reports/daily-transaction.pdf", r.reportHandler.GetDailyTransactionReportPDF)
 			}
+
+			// User device routes - accessible by authenticated users for their own devices
+			userDevices := protected.Group("/user-devices")
+			{
+				userDevices.POST("/register", r.userDeviceHandler.RegisterDevice)
+				userDevices.GET("/me", r.userDeviceHandler.GetMyDevices)
+				userDevices.GET("/:id", r.userDeviceHandler.GetDevice)
+				userDevices.PUT("/:id", r.userDeviceHandler.UpdateDevice)
+				userDevices.DELETE("/:id", r.userDeviceHandler.DeleteDevice)
+			}
+
+			// Admin-only user device routes
+			adminUserDevices := protected.Group("/user-devices")
+			adminUserDevices.Use(r.authMiddleware.RequireAdminOrManager())
+			{
+				adminUserDevices.GET("", r.userDeviceHandler.ListDevices)
+				adminUserDevices.GET("/user/:user_id", r.userDeviceHandler.GetDevicesByUser)
+			}
+
+			// Notification routes - authenticated users manage their own notifications
+			notifications := protected.Group("/notifications")
+			{
+				notifications.GET("", r.notificationHandler.List)
+				notifications.GET("/:id", r.notificationHandler.GetByID)
+				notifications.PUT("/:id/read", r.notificationHandler.MarkAsRead)
+				notifications.PUT("/read-all", r.notificationHandler.MarkAllAsRead)
+				notifications.DELETE("/:id", r.notificationHandler.Delete)
+			}
+
+			// Admin notification routes - send and broadcast
+			adminNotifications := protected.Group("/notifications")
+			adminNotifications.Use(r.authMiddleware.RequireAdminOrManager())
+			{
+				adminNotifications.POST("/send", r.notificationHandler.Send)
+				adminNotifications.POST("/broadcast", r.notificationHandler.Broadcast)
+			}
 		}
 	}
 }

internal/service/auth_service.go

@@ -4,12 +4,13 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"log"
 	"time"
 
 	"apskel-pos-be/config"
 	"apskel-pos-be/internal/contract"
+	"apskel-pos-be/internal/entities"
 	"apskel-pos-be/internal/models"
+	"apskel-pos-be/internal/processor"
 	"apskel-pos-be/internal/transformer"
 
 	"github.com/golang-jwt/jwt/v5"
@@ -26,6 +27,7 @@ type AuthService interface {
 
 type AuthServiceImpl struct {
 	userProcessor       UserProcessor
+	userDeviceProcessor processor.UserDeviceProcessor
 	jwtSecret           string
 	refreshSecret       string
 	tokenTTL            time.Duration
@@ -40,9 +42,10 @@ type Claims struct {
 	jwt.RegisteredClaims
 }
 
-func NewAuthService(userProcessor UserProcessor, authConfig *config.AuthConfig) AuthService {
+func NewAuthService(userProcessor UserProcessor, userDeviceProcessor processor.UserDeviceProcessor, authConfig *config.AuthConfig) AuthService {
 	return &AuthServiceImpl{
 		userProcessor:       userProcessor,
+		userDeviceProcessor: userDeviceProcessor,
 		jwtSecret:           authConfig.AccessTokenSecret(),
 		refreshSecret:       authConfig.RefreshTokenSecret(),
 		tokenTTL:            authConfig.AccessTokenTTL(),
@@ -82,7 +85,24 @@ func (s *AuthServiceImpl) Login(ctx context.Context, req *contract.LoginRequest)
 		return nil, fmt.Errorf("failed to generate refresh token: %w", err)
 	}
 
-	go s.saveFcmToken(context.Background(), userResponse.ID, req.FcmToken)
+	// Register or update device info if provided
+	if req.DeviceID != "" && s.userDeviceProcessor != nil {
+		deviceReq := &models.RegisterUserDeviceRequest{
+			UserID:     userResponse.ID,
+			DeviceID:   req.DeviceID,
+			DeviceName: req.DeviceName,
+			DeviceType: entities.DeviceType(req.DeviceType),
+			Platform:   entities.DevicePlatform(req.Platform),
+			FCMToken:   req.FCMToken,
+			AppVersion: req.AppVersion,
+			OsVersion:  req.OsVersion,
+		}
+		// Non-blocking: log error but don't fail login
+		if _, err := s.userDeviceProcessor.RegisterDevice(ctx, deviceReq); err != nil {
+			// Log but don't fail the login
+			_ = err
+		}
+	}
 
 	return &contract.LoginResponse{
 		Token:            token,
@@ -93,14 +113,6 @@ func (s *AuthServiceImpl) Login(ctx context.Context, req *contract.LoginRequest)
 	}, nil
 }
 
-func (s *AuthServiceImpl) saveFcmToken(ctx context.Context, userID uuid.UUID, fcmToken *string) {
-	if fcmToken != nil && *fcmToken != "" {
-		if err := s.userProcessor.UpdateFcmToken(ctx, userID, *fcmToken); err != nil {
-			log.Printf("failed to save FCM token for user %s: %v", userID, err)
-		}
-	}
-}
-
 func (s *AuthServiceImpl) ValidateToken(tokenString string) (*contract.UserResponse, error) {
 	claims, err := s.parseToken(tokenString)
 	if err != nil {

internal/service/notification_service.go

@@ -0,0 +1,154 @@
+package service
+
+import (
+	"context"
+	"math"
+
+	"apskel-pos-be/internal/constants"
+	"apskel-pos-be/internal/contract"
+	"apskel-pos-be/internal/models"
+	"apskel-pos-be/internal/processor"
+	"apskel-pos-be/internal/transformer"
+
+	"github.com/google/uuid"
+)
+
+type NotificationService interface {
+	Send(ctx context.Context, req *contract.SendNotificationRequest, createdBy uuid.UUID) *contract.Response
+	Broadcast(ctx context.Context, req *contract.BroadcastNotificationRequest, organizationID, createdBy uuid.UUID) *contract.Response
+	MarkAsRead(ctx context.Context, receiverID, userID uuid.UUID) *contract.Response
+	MarkAllAsRead(ctx context.Context, userID uuid.UUID) *contract.Response
+	DeleteForUser(ctx context.Context, receiverID, userID uuid.UUID) *contract.Response
+	ListForUser(ctx context.Context, req *contract.ListNotificationsRequest, userID uuid.UUID) *contract.Response
+	GetByID(ctx context.Context, id uuid.UUID) *contract.Response
+}
+
+type NotificationServiceImpl struct {
+	notificationProcessor processor.NotificationProcessor
+}
+
+func NewNotificationService(notificationProcessor processor.NotificationProcessor) *NotificationServiceImpl {
+	return &NotificationServiceImpl{
+		notificationProcessor: notificationProcessor,
+	}
+}
+
+func (s *NotificationServiceImpl) Send(ctx context.Context, req *contract.SendNotificationRequest, createdBy uuid.UUID) *contract.Response {
+	modelReq := &models.SendNotificationRequest{
+		Title:          req.Title,
+		Body:           req.Body,
+		Type:           req.Type,
+		Category:       req.Category,
+		Priority:       req.Priority,
+		ImageURL:       req.ImageURL,
+		ActionURL:      req.ActionURL,
+		NotifiableType: req.NotifiableType,
+		NotifiableID:   req.NotifiableID,
+		Data:           req.Data,
+		ReceiverIDs:    req.ReceiverIDs,
+		ScheduledAt:    req.ScheduledAt,
+		ExpiredAt:      req.ExpiredAt,
+		CreatedBy:      &createdBy,
+	}
+
+	resp, err := s.notificationProcessor.Send(ctx, modelReq)
+	if err != nil {
+		errResp := contract.NewResponseError(constants.InternalServerErrorCode, constants.NotificationServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errResp})
+	}
+
+	return contract.BuildSuccessResponse(transformer.NotificationModelResponseToContract(resp))
+}
+
+func (s *NotificationServiceImpl) Broadcast(ctx context.Context, req *contract.BroadcastNotificationRequest, organizationID, createdBy uuid.UUID) *contract.Response {
+	modelReq := &models.BroadcastNotificationRequest{
+		Title:          req.Title,
+		Body:           req.Body,
+		Type:           req.Type,
+		Category:       req.Category,
+		Priority:       req.Priority,
+		ImageURL:       req.ImageURL,
+		ActionURL:      req.ActionURL,
+		NotifiableType: req.NotifiableType,
+		NotifiableID:   req.NotifiableID,
+		Data:           req.Data,
+		OrganizationID: organizationID,
+		ScheduledAt:    req.ScheduledAt,
+		ExpiredAt:      req.ExpiredAt,
+		CreatedBy:      &createdBy,
+	}
+
+	resp, err := s.notificationProcessor.Broadcast(ctx, modelReq)
+	if err != nil {
+		errResp := contract.NewResponseError(constants.InternalServerErrorCode, constants.NotificationServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errResp})
+	}
+
+	return contract.BuildSuccessResponse(transformer.NotificationModelResponseToContract(resp))
+}
+
+func (s *NotificationServiceImpl) MarkAsRead(ctx context.Context, receiverID, userID uuid.UUID) *contract.Response {
+	resp, err := s.notificationProcessor.MarkAsRead(ctx, receiverID, userID)
+	if err != nil {
+		errResp := contract.NewResponseError(constants.InternalServerErrorCode, constants.NotificationServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errResp})
+	}
+
+	return contract.BuildSuccessResponse(transformer.NotificationReceiverModelResponseToContract(resp))
+}
+
+func (s *NotificationServiceImpl) MarkAllAsRead(ctx context.Context, userID uuid.UUID) *contract.Response {
+	if err := s.notificationProcessor.MarkAllAsRead(ctx, userID); err != nil {
+		errResp := contract.NewResponseError(constants.InternalServerErrorCode, constants.NotificationServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errResp})
+	}
+
+	return contract.BuildSuccessResponse(map[string]interface{}{"message": "All notifications marked as read"})
+}
+
+func (s *NotificationServiceImpl) DeleteForUser(ctx context.Context, receiverID, userID uuid.UUID) *contract.Response {
+	if err := s.notificationProcessor.DeleteForUser(ctx, receiverID, userID); err != nil {
+		errResp := contract.NewResponseError(constants.InternalServerErrorCode, constants.NotificationServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errResp})
+	}
+
+	return contract.BuildSuccessResponse(map[string]interface{}{"message": "Notification deleted"})
+}
+
+func (s *NotificationServiceImpl) ListForUser(ctx context.Context, req *contract.ListNotificationsRequest, userID uuid.UUID) *contract.Response {
+	modelReq := &models.ListNotificationsRequest{
+		Page:   req.Page,
+		Limit:  req.Limit,
+		UserID: userID,
+		IsRead: req.IsRead,
+	}
+
+	receivers, total, unreadCount, err := s.notificationProcessor.ListForUser(ctx, modelReq)
+	if err != nil {
+		errResp := contract.NewResponseError(constants.InternalServerErrorCode, constants.NotificationServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errResp})
+	}
+
+	totalPages := int(math.Ceil(float64(total) / float64(req.Limit)))
+
+	response := contract.ListNotificationsResponse{
+		Notifications: transformer.NotificationReceiverModelResponsesToContracts(receivers),
+		TotalCount:    total,
+		UnreadCount:   unreadCount,
+		Page:          req.Page,
+		Limit:         req.Limit,
+		TotalPages:    totalPages,
+	}
+
+	return contract.BuildSuccessResponse(response)
+}
+
+func (s *NotificationServiceImpl) GetByID(ctx context.Context, id uuid.UUID) *contract.Response {
+	resp, err := s.notificationProcessor.GetByID(ctx, id)
+	if err != nil {
+		errResp := contract.NewResponseError(constants.NotFoundErrorCode, constants.NotificationServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errResp})
+	}
+
+	return contract.BuildSuccessResponse(transformer.NotificationModelResponseToContract(resp))
+}

internal/service/omset_milestone_scheduler.go

@@ -0,0 +1,171 @@
+package service
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"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"
+
+	"github.com/google/uuid"
+)
+
+const (
+	defaultCheckInterval = 1 * time.Hour
+	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.
+//
+// NOTE: Milestone tracking is in-memory; notifications may re-trigger after a restart.
+// For persistent tracking, persist the notified state in the database.
+type OmsetMilestoneScheduler struct {
+	orgRepo          *repository.OrganizationRepositoryImpl
+	userRepo         *repository.UserRepositoryImpl
+	notificationProc processor.NotificationProcessor
+
+	mu       sync.Mutex
+	notified map[string]bool // "orgID:milestone" -> already notified
+	stopCh   chan struct{}
+}
+
+func NewOmsetMilestoneScheduler(
+	orgRepo *repository.OrganizationRepositoryImpl,
+	userRepo *repository.UserRepositoryImpl,
+	notificationProc processor.NotificationProcessor,
+) *OmsetMilestoneScheduler {
+	return &OmsetMilestoneScheduler{
+		orgRepo:          orgRepo,
+		userRepo:         userRepo,
+		notificationProc: notificationProc,
+		notified:         make(map[string]bool),
+		stopCh:           make(chan struct{}),
+	}
+}
+
+// Start begins the periodic milestone check in a background goroutine.
+func (s *OmsetMilestoneScheduler) Start(interval time.Duration) {
+	if interval <= 0 {
+		interval = defaultCheckInterval
+	}
+
+	go func() {
+		// Perform an initial check immediately.
+		s.checkAllOrganizations()
+
+		ticker := time.NewTicker(interval)
+		defer ticker.Stop()
+
+		for {
+			select {
+			case <-ticker.C:
+				s.checkAllOrganizations()
+			case <-s.stopCh:
+				log.Println("Omset milestone scheduler stopped")
+				return
+			}
+		}
+	}()
+
+	log.Println("Omset milestone scheduler started")
+}
+
+// Stop signals the scheduler to stop.
+func (s *OmsetMilestoneScheduler) Stop() {
+	close(s.stopCh)
+}
+
+func (s *OmsetMilestoneScheduler) checkAllOrganizations() {
+	ctx := context.Background()
+
+	orgs, _, err := s.orgRepo.List(ctx, nil, 1000, 0)
+	if err != nil {
+		log.Printf("OmsetMilestoneScheduler: failed to list organizations: %v", err)
+		return
+	}
+
+	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 {
+			continue
+		}
+
+		key := fmt.Sprintf("%s:%.0f", org.ID.String(), milestone)
+
+		s.mu.Lock()
+		if s.notified[key] {
+			s.mu.Unlock()
+			continue
+		}
+		s.notified[key] = true
+		s.mu.Unlock()
+
+		s.sendMilestoneNotification(ctx, org, totalOmset, milestone)
+	}
+}
+
+func (s *OmsetMilestoneScheduler) sendMilestoneNotification(ctx context.Context, org *entities.Organization, totalOmset float64, milestone float64) {
+	users, err := s.userRepo.GetByOrganizationID(ctx, org.ID)
+	if err != nil {
+		log.Printf("OmsetMilestoneScheduler: failed to get users for org %s: %v", org.ID, 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)
+		}
+	}
+
+	if len(receiverIDs) == 0 {
+		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)
+
+	notifReq := &models.SendNotificationRequest{
+		Title:          title,
+		Body:           body,
+		Type:           "milestone",
+		Category:       "omset_milestone",
+		NotifiableType: "organization",
+		NotifiableID:   &orgID,
+		ReceiverIDs:    receiverIDs,
+		Data: map[string]interface{}{
+			"organization_id": org.ID.String(),
+			"total_omset":     totalOmset,
+			"milestone":       milestone,
+		},
+	}
+
+	if _, err := s.notificationProc.Send(ctx, notifReq); err != nil {
+		log.Printf("OmsetMilestoneScheduler: failed to send notification for org %s: %v", org.ID, err)
+	} else {
+		log.Printf("OmsetMilestoneScheduler: sent milestone notification to org %s (omset: %.0f)", org.ID, totalOmset)
+	}
+}

internal/service/order_service.go

@@ -16,6 +16,11 @@ import (
 	"github.com/google/uuid"
 )
 
+// orderUserRepository is a minimal interface to fetch users by organization for notification purposes.
+type orderUserRepository interface {
+	GetActiveByOutletID(ctx context.Context, organizationID, outletID uuid.UUID) ([]*entities.User, error)
+}
+
 type OrderService interface {
 	CreateOrder(ctx context.Context, req *models.CreateOrderRequest, organizationID uuid.UUID) (*models.OrderResponse, error)
 	AddToOrder(ctx context.Context, orderID uuid.UUID, req *models.AddToOrderRequest) (*models.AddToOrderResponse, error)
@@ -38,9 +43,11 @@ type OrderServiceImpl struct {
 	productRecipeRepo                   repository.ProductRecipeRepository
 	txManager                           *repository.TxManager
 	sessionRepo                         repository.SessionRepository
+	notificationProcessor               processor.NotificationProcessor
+	userRepo                            orderUserRepository
 }
 
-func NewOrderServiceImpl(orderProcessor processor.OrderProcessor, tableRepo repository.TableRepositoryInterface, orderIngredientTransactionService *OrderIngredientTransactionService, orderIngredientTransactionProcessor processor.OrderIngredientTransactionProcessor, productRecipeRepo repository.ProductRecipeRepository, txManager *repository.TxManager, sessionRepo repository.SessionRepository) *OrderServiceImpl {
+func NewOrderServiceImpl(orderProcessor processor.OrderProcessor, tableRepo repository.TableRepositoryInterface, orderIngredientTransactionService *OrderIngredientTransactionService, orderIngredientTransactionProcessor processor.OrderIngredientTransactionProcessor, productRecipeRepo repository.ProductRecipeRepository, txManager *repository.TxManager, sessionRepo repository.SessionRepository, notificationProcessor processor.NotificationProcessor, userRepo orderUserRepository) *OrderServiceImpl {
 	return &OrderServiceImpl{
 		orderProcessor:                      orderProcessor,
 		tableRepo:                           tableRepo,
@@ -49,6 +56,8 @@ func NewOrderServiceImpl(orderProcessor processor.OrderProcessor, tableRepo repo
 		productRecipeRepo:                   productRecipeRepo,
 		txManager:                           txManager,
 		sessionRepo:                         sessionRepo,
+		notificationProcessor:               notificationProcessor,
+		userRepo:                            userRepo,
 	}
 }
 
@@ -104,10 +113,73 @@ func (s *OrderServiceImpl) CreateOrder(ctx context.Context, req *models.CreateOr
 		return nil, err
 	}
 
+	// Send notification to all org users if this is a self-order
+	if isSelfOrder(req.Metadata) {
+		go s.sendSelfOrderNotification(context.Background(), response, organizationID)
+	}
+
 	return response, nil
 }
 
-// createIngredientTransactions creates ingredient transactions for order items efficiently
+// isSelfOrder checks if the order metadata indicates a self-order.
+func isSelfOrder(metadata map[string]interface{}) bool {
+	if metadata == nil {
+		return false
+	}
+	v, ok := metadata["self_order"]
+	if !ok {
+		return false
+	}
+	b, ok := v.(bool)
+	return ok && b
+}
+
+// sendSelfOrderNotification sends a new-order notification to all active users
+// that can access the outlet where the self-order was placed.
+func (s *OrderServiceImpl) sendSelfOrderNotification(ctx context.Context, order *models.OrderResponse, organizationID uuid.UUID) {
+	if s.notificationProcessor == nil || s.userRepo == nil {
+		return
+	}
+
+	users, err := s.userRepo.GetActiveByOutletID(ctx, organizationID, order.OutletID)
+	if err != nil || len(users) == 0 {
+		return
+	}
+
+	receiverIDs := make([]uuid.UUID, 0, len(users))
+	for _, u := range users {
+		receiverIDs = append(receiverIDs, u.ID)
+	}
+
+	tableName := ""
+	if order.TableNumber != nil {
+		tableName = *order.TableNumber
+	}
+
+	title := "Pesanan Baru Masuk"
+	body := fmt.Sprintf("Ada pesanan baru dari meja %s", tableName)
+	if tableName == "" {
+		body = "Ada pesanan baru masuk"
+	}
+
+	orderID := order.ID
+	notifReq := &models.SendNotificationRequest{
+		Title:          title,
+		Body:           body,
+		Type:           "order",
+		Category:       "self_order",
+		NotifiableType: "order",
+		NotifiableID:   &orderID,
+		ReceiverIDs:    receiverIDs,
+		Data: map[string]interface{}{
+			"order_id":     order.ID.String(),
+			"order_number": order.OrderNumber,
+			"table_name":   tableName,
+		},
+	}
+
+	_, _ = s.notificationProcessor.Send(ctx, notifReq)
+}
 func (s *OrderServiceImpl) createIngredientTransactions(ctx context.Context, orderID uuid.UUID, orderItems []models.OrderItemResponse) ([]*contract.CreateOrderIngredientTransactionRequest, error) {
 	appCtx := appcontext.FromGinContext(ctx)
 	organizationID := appCtx.OrganizationID

internal/service/product_outlet_price_service.go

@@ -0,0 +1,125 @@
+package service
+
+import (
+	"context"
+	"errors"
+
+	"apskel-pos-be/internal/constants"
+	"apskel-pos-be/internal/contract"
+	"apskel-pos-be/internal/models"
+	"apskel-pos-be/internal/processor"
+	"apskel-pos-be/internal/transformer"
+
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+)
+
+type ProductOutletPriceService interface {
+	Upsert(ctx context.Context, req *contract.CreateProductOutletPriceRequest) *contract.Response
+	GetByProductAndOutlet(ctx context.Context, productID, outletID uuid.UUID) *contract.Response
+	GetByProduct(ctx context.Context, productID uuid.UUID) *contract.Response
+	GetByOutlet(ctx context.Context, outletID uuid.UUID) *contract.Response
+	Delete(ctx context.Context, id uuid.UUID) *contract.Response
+	BulkUpsert(ctx context.Context, req *contract.BulkCreateProductOutletPriceRequest) *contract.Response
+}
+
+type ProductOutletPriceServiceImpl struct {
+	processor processor.ProductOutletPriceProcessor
+}
+
+func NewProductOutletPriceService(proc processor.ProductOutletPriceProcessor) *ProductOutletPriceServiceImpl {
+	return &ProductOutletPriceServiceImpl{
+		processor: proc,
+	}
+}
+
+func (s *ProductOutletPriceServiceImpl) Upsert(ctx context.Context, req *contract.CreateProductOutletPriceRequest) *contract.Response {
+	modelReq := transformer.CreateProductOutletPriceRequestToModel(req)
+
+	result, err := s.processor.Upsert(ctx, modelReq)
+	if err != nil {
+		errorResp := contract.NewResponseError(constants.InternalServerErrorCode, constants.ProductOutletPriceServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errorResp})
+	}
+
+	contractResp := transformer.ProductOutletPriceModelToResponse(result)
+	return contract.BuildSuccessResponse(contractResp)
+}
+
+func (s *ProductOutletPriceServiceImpl) GetByProductAndOutlet(ctx context.Context, productID, outletID uuid.UUID) *contract.Response {
+	result, err := s.processor.GetByProductAndOutlet(ctx, productID, outletID)
+	if err != nil {
+		code := constants.InternalServerErrorCode
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			code = constants.NotFoundErrorCode
+		}
+		errorResp := contract.NewResponseError(code, constants.ProductOutletPriceServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errorResp})
+	}
+
+	contractResp := transformer.ProductOutletPriceModelToResponse(result)
+	return contract.BuildSuccessResponse(contractResp)
+}
+
+func (s *ProductOutletPriceServiceImpl) GetByProduct(ctx context.Context, productID uuid.UUID) *contract.Response {
+	results, err := s.processor.GetByProduct(ctx, productID)
+	if err != nil {
+		errorResp := contract.NewResponseError(constants.InternalServerErrorCode, constants.ProductOutletPriceServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errorResp})
+	}
+
+	contractResps := transformer.ProductOutletPriceModelsToResponses(results)
+	return contract.BuildSuccessResponse(&contract.ListProductOutletPricesResponse{
+		Prices:     contractResps,
+		TotalCount: len(contractResps),
+	})
+}
+
+func (s *ProductOutletPriceServiceImpl) GetByOutlet(ctx context.Context, outletID uuid.UUID) *contract.Response {
+	results, err := s.processor.GetByOutlet(ctx, outletID)
+	if err != nil {
+		errorResp := contract.NewResponseError(constants.InternalServerErrorCode, constants.ProductOutletPriceServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errorResp})
+	}
+
+	contractResps := transformer.ProductOutletPriceModelsToResponses(results)
+	return contract.BuildSuccessResponse(&contract.ListProductOutletPricesResponse{
+		Prices:     contractResps,
+		TotalCount: len(contractResps),
+	})
+}
+
+func (s *ProductOutletPriceServiceImpl) Delete(ctx context.Context, id uuid.UUID) *contract.Response {
+	err := s.processor.Delete(ctx, id)
+	if err != nil {
+		errorResp := contract.NewResponseError(constants.InternalServerErrorCode, constants.ProductOutletPriceServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errorResp})
+	}
+
+	return contract.BuildSuccessResponse(map[string]interface{}{
+		"message": "Product outlet price deleted successfully",
+	})
+}
+
+func (s *ProductOutletPriceServiceImpl) BulkUpsert(ctx context.Context, req *contract.BulkCreateProductOutletPriceRequest) *contract.Response {
+	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,
+		}
+	}
+
+	results, err := s.processor.BulkUpsert(ctx, req.ProductID, prices)
+	if err != nil {
+		errorResp := contract.NewResponseError(constants.InternalServerErrorCode, constants.ProductOutletPriceServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errorResp})
+	}
+
+	contractResps := transformer.ProductOutletPriceModelsToResponses(results)
+	return contract.BuildSuccessResponse(&contract.ListProductOutletPricesResponse{
+		Prices:     contractResps,
+		TotalCount: len(contractResps),
+	})
+}

internal/service/product_service.go

@@ -16,8 +16,9 @@ type ProductService interface {
 	CreateProduct(ctx context.Context, apctx *appcontext.ContextInfo, req *contract.CreateProductRequest) *contract.Response
 	UpdateProduct(ctx context.Context, id uuid.UUID, req *contract.UpdateProductRequest) *contract.Response
 	DeleteProduct(ctx context.Context, id uuid.UUID) *contract.Response
-	GetProductByID(ctx context.Context, id uuid.UUID) *contract.Response
+	GetProductByID(ctx context.Context, id uuid.UUID, outletID uuid.UUID) *contract.Response
 	ListProducts(ctx context.Context, req *contract.ListProductsRequest) *contract.Response
+	ListProductsAll(ctx context.Context, req *contract.ListProductsRequest) *contract.Response
 }
 
 type ProductServiceImpl struct {
@@ -68,8 +69,8 @@ func (s *ProductServiceImpl) DeleteProduct(ctx context.Context, id uuid.UUID) *c
 	})
 }
 
-func (s *ProductServiceImpl) GetProductByID(ctx context.Context, id uuid.UUID) *contract.Response {
-	productResponse, err := s.productProcessor.GetProductByID(ctx, id)
+func (s *ProductServiceImpl) GetProductByID(ctx context.Context, id uuid.UUID, outletID uuid.UUID) *contract.Response {
+	productResponse, err := s.productProcessor.GetProductByID(ctx, id, outletID)
 	if err != nil {
 		errorResp := contract.NewResponseError(constants.InternalServerErrorCode, constants.ProductServiceEntity, err.Error())
 		return contract.BuildErrorResponse([]*contract.ResponseError{errorResp})
@@ -85,6 +86,63 @@ func (s *ProductServiceImpl) ListProducts(ctx context.Context, req *contract.Lis
 	if req.OrganizationID != nil {
 		filters["organization_id"] = *req.OrganizationID
 	}
+	if req.OutletID != nil {
+		filters["outlet_id"] = *req.OutletID
+	}
+	if req.CategoryID != nil {
+		filters["category_id"] = *req.CategoryID
+	}
+	if req.BusinessType != "" {
+		filters["business_type"] = req.BusinessType
+	}
+	if req.IsActive != nil {
+		filters["is_active"] = *req.IsActive
+	}
+	if req.Search != "" {
+		filters["search"] = req.Search
+	}
+	if req.MinPrice != nil {
+		filters["price_min"] = *req.MinPrice
+	}
+	if req.MaxPrice != nil {
+		filters["price_max"] = *req.MaxPrice
+	}
+
+	products, totalCount, err := s.productProcessor.ListProducts(ctx, filters, req.Page, req.Limit)
+	if err != nil {
+		errorResp := contract.NewResponseError(constants.InternalServerErrorCode, constants.ProductServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errorResp})
+	}
+
+	// Convert to contract responses
+	contractResponses := transformer.ProductsToResponses(products)
+
+	// Calculate total pages
+	totalPages := totalCount / req.Limit
+	if totalCount%req.Limit > 0 {
+		totalPages++
+	}
+
+	listResponse := &contract.ListProductsResponse{
+		Products:   contractResponses,
+		TotalCount: totalCount,
+		Page:       req.Page,
+		Limit:      req.Limit,
+		TotalPages: totalPages,
+	}
+
+	return contract.BuildSuccessResponse(listResponse)
+}
+
+func (s *ProductServiceImpl) ListProductsAll(ctx context.Context, req *contract.ListProductsRequest) *contract.Response {
+	// Build filters
+	filters := make(map[string]interface{})
+	if req.OrganizationID != nil {
+		filters["organization_id"] = *req.OrganizationID
+	}
+	if req.OutletID != nil {
+		filters["outlet_id"] = *req.OutletID
+	}
 	if req.CategoryID != nil {
 		filters["category_id"] = *req.CategoryID
 	}

internal/service/user_device_service.go

@@ -0,0 +1,122 @@
+package service
+
+import (
+	"context"
+
+	"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 UserDeviceService interface {
+	RegisterDevice(ctx context.Context, userID uuid.UUID, req *contract.RegisterUserDeviceRequest) *contract.Response
+	UpdateDevice(ctx context.Context, id uuid.UUID, req *contract.UpdateUserDeviceRequest) *contract.Response
+	DeleteDevice(ctx context.Context, id uuid.UUID) *contract.Response
+	GetDeviceByID(ctx context.Context, id uuid.UUID) *contract.Response
+	GetDevicesByUserID(ctx context.Context, userID uuid.UUID) *contract.Response
+	ListDevices(ctx context.Context, req *contract.ListUserDevicesRequest) *contract.Response
+}
+
+type UserDeviceServiceImpl struct {
+	userDeviceProcessor processor.UserDeviceProcessor
+}
+
+func NewUserDeviceService(userDeviceProcessor processor.UserDeviceProcessor) *UserDeviceServiceImpl {
+	return &UserDeviceServiceImpl{
+		userDeviceProcessor: userDeviceProcessor,
+	}
+}
+
+func (s *UserDeviceServiceImpl) RegisterDevice(ctx context.Context, userID uuid.UUID, req *contract.RegisterUserDeviceRequest) *contract.Response {
+	modelReq := transformer.RegisterUserDeviceRequestToModel(req)
+	modelReq.UserID = userID
+
+	deviceResponse, err := s.userDeviceProcessor.RegisterDevice(ctx, modelReq)
+	if err != nil {
+		errorResp := contract.NewResponseError(constants.InternalServerErrorCode, constants.UserDeviceServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errorResp})
+	}
+
+	contractResponse := transformer.UserDeviceModelResponseToResponse(deviceResponse)
+	return contract.BuildSuccessResponse(contractResponse)
+}
+
+func (s *UserDeviceServiceImpl) UpdateDevice(ctx context.Context, id uuid.UUID, req *contract.UpdateUserDeviceRequest) *contract.Response {
+	modelReq := transformer.UpdateUserDeviceRequestToModel(req)
+
+	deviceResponse, err := s.userDeviceProcessor.UpdateDevice(ctx, id, modelReq)
+	if err != nil {
+		errorResp := contract.NewResponseError(constants.InternalServerErrorCode, constants.UserDeviceServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errorResp})
+	}
+
+	contractResponse := transformer.UserDeviceModelResponseToResponse(deviceResponse)
+	return contract.BuildSuccessResponse(contractResponse)
+}
+
+func (s *UserDeviceServiceImpl) DeleteDevice(ctx context.Context, id uuid.UUID) *contract.Response {
+	err := s.userDeviceProcessor.DeleteDevice(ctx, id)
+	if err != nil {
+		errorResp := contract.NewResponseError(constants.InternalServerErrorCode, constants.UserDeviceServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errorResp})
+	}
+
+	return contract.BuildSuccessResponse(map[string]interface{}{
+		"message": "Device deleted successfully",
+	})
+}
+
+func (s *UserDeviceServiceImpl) GetDeviceByID(ctx context.Context, id uuid.UUID) *contract.Response {
+	deviceResponse, err := s.userDeviceProcessor.GetDeviceByID(ctx, id)
+	if err != nil {
+		errorResp := contract.NewResponseError(constants.NotFoundErrorCode, constants.UserDeviceServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errorResp})
+	}
+
+	contractResponse := transformer.UserDeviceModelResponseToResponse(deviceResponse)
+	return contract.BuildSuccessResponse(contractResponse)
+}
+
+func (s *UserDeviceServiceImpl) GetDevicesByUserID(ctx context.Context, userID uuid.UUID) *contract.Response {
+	deviceResponses, err := s.userDeviceProcessor.GetDevicesByUserID(ctx, userID)
+	if err != nil {
+		errorResp := contract.NewResponseError(constants.InternalServerErrorCode, constants.UserDeviceServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errorResp})
+	}
+
+	contractResponses := transformer.UserDeviceModelResponsesToResponses(deviceResponses)
+	return contract.BuildSuccessResponse(contractResponses)
+}
+
+func (s *UserDeviceServiceImpl) ListDevices(ctx context.Context, req *contract.ListUserDevicesRequest) *contract.Response {
+	modelReq := transformer.ListUserDevicesRequestToModel(req)
+
+	filters := make(map[string]interface{})
+	if modelReq.UserID != "" {
+		filters["user_id"] = modelReq.UserID
+	}
+	if modelReq.Platform != "" {
+		filters["platform"] = modelReq.Platform
+	}
+
+	devices, totalPages, err := s.userDeviceProcessor.ListDevices(ctx, filters, modelReq.Page, modelReq.Limit)
+	if err != nil {
+		errorResp := contract.NewResponseError(constants.InternalServerErrorCode, constants.UserDeviceServiceEntity, err.Error())
+		return contract.BuildErrorResponse([]*contract.ResponseError{errorResp})
+	}
+
+	contractResponses := transformer.UserDeviceModelResponsesToResponses(devices)
+
+	response := contract.ListUserDevicesResponse{
+		Devices:    contractResponses,
+		TotalCount: len(contractResponses),
+		Page:       modelReq.Page,
+		Limit:      modelReq.Limit,
+		TotalPages: totalPages,
+	}
+
+	return contract.BuildSuccessResponse(response)
+}

internal/service/user_processor.go

@@ -20,5 +20,4 @@ type UserProcessor interface {
 	ActivateUser(ctx context.Context, userID uuid.UUID) error
 	DeactivateUser(ctx context.Context, userID uuid.UUID) error
 	UpdateUserOutlet(ctx context.Context, userID uuid.UUID, req *models.UpdateUserOutletRequest) (*models.UserResponse, error)
-	UpdateFcmToken(ctx context.Context, userID uuid.UUID, fcmToken string) error
 }

internal/transformer/analytics_transformer.go

@@ -6,8 +6,22 @@ import (
 	"apskel-pos-be/internal/util"
 	"fmt"
 	"time"
+
+	"github.com/google/uuid"
 )
 
+// parseOutletID converts a *string outlet ID to *uuid.UUID, returning nil for invalid/empty values.
+func parseOutletID(s *string) *uuid.UUID {
+	if s == nil {
+		return nil
+	}
+	id, err := uuid.Parse(*s)
+	if err != nil {
+		return nil
+	}
+	return &id
+}
+
 // PaymentMethodAnalyticsContractToModel converts contract request to model
 func PaymentMethodAnalyticsContractToModel(req *contract.PaymentMethodAnalyticsRequest) *models.PaymentMethodAnalyticsRequest {
 	var dateFrom, dateTo time.Time
@@ -23,7 +37,7 @@ func PaymentMethodAnalyticsContractToModel(req *contract.PaymentMethodAnalyticsR
 
 	return &models.PaymentMethodAnalyticsRequest{
 		OrganizationID: req.OrganizationID,
-		OutletID:       req.OutletID,
+		OutletID:       parseOutletID(req.OutletID),
 		DateFrom:       dateFrom,
 		DateTo:         dateTo,
 		GroupBy:        req.GroupBy,
@@ -79,7 +93,7 @@ func SalesAnalyticsContractToModel(req *contract.SalesAnalyticsRequest) *models.
 
 	return &models.SalesAnalyticsRequest{
 		OrganizationID: req.OrganizationID,
-		OutletID:       req.OutletID,
+		OutletID:       parseOutletID(req.OutletID),
 		DateFrom:       dateFrom,
 		DateTo:         dateTo,
 		GroupBy:        req.GroupBy,
@@ -139,7 +153,7 @@ func ProductAnalyticsContractToModel(req *contract.ProductAnalyticsRequest) *mod
 
 	return &models.ProductAnalyticsRequest{
 		OrganizationID: req.OrganizationID,
-		OutletID:       req.OutletID,
+		OutletID:       parseOutletID(req.OutletID),
 		DateFrom:       dateFrom,
 		DateTo:         dateTo,
 		Limit:          req.Limit,
@@ -199,7 +213,7 @@ func ProductAnalyticsPerCategoryContractToModel(req *contract.ProductAnalyticsPe
 
 	return &models.ProductAnalyticsPerCategoryRequest{
 		OrganizationID: req.OrganizationID,
-		OutletID:       req.OutletID,
+		OutletID:       parseOutletID(req.OutletID),
 		DateFrom:       dateFrom,
 		DateTo:         dateTo,
 	}
@@ -251,7 +265,7 @@ func DashboardAnalyticsContractToModel(req *contract.DashboardAnalyticsRequest)
 
 	return &models.DashboardAnalyticsRequest{
 		OrganizationID: req.OrganizationID,
-		OutletID:       req.OutletID,
+		OutletID:       parseOutletID(req.OutletID),
 		DateFrom:       dateFrom,
 		DateTo:         dateTo,
 	}
@@ -346,7 +360,7 @@ func ProfitLossAnalyticsContractToModel(req *contract.ProfitLossAnalyticsRequest
 
 	return &models.ProfitLossAnalyticsRequest{
 		OrganizationID: req.OrganizationID,
-		OutletID:       req.OutletID,
+		OutletID:       parseOutletID(req.OutletID),
 		DateFrom:       *dateFrom,
 		DateTo:         *dateTo,
 		GroupBy:        req.GroupBy,

internal/transformer/notification_transformer.go

@@ -0,0 +1,63 @@
+package transformer
+
+import (
+	"apskel-pos-be/internal/contract"
+	"apskel-pos-be/internal/models"
+)
+
+func NotificationModelResponseToContract(m *models.NotificationResponse) *contract.NotificationResponse {
+	if m == nil {
+		return nil
+	}
+	return &contract.NotificationResponse{
+		ID:             m.ID,
+		Title:          m.Title,
+		Body:           m.Body,
+		Type:           m.Type,
+		Category:       m.Category,
+		Priority:       m.Priority,
+		ImageURL:       m.ImageURL,
+		ActionURL:      m.ActionURL,
+		NotifiableType: m.NotifiableType,
+		NotifiableID:   m.NotifiableID,
+		Data:           m.Data,
+		ScheduledAt:    m.ScheduledAt,
+		SentAt:         m.SentAt,
+		ExpiredAt:      m.ExpiredAt,
+		CreatedBy:      m.CreatedBy,
+		CreatedAt:      m.CreatedAt,
+		UpdatedAt:      m.UpdatedAt,
+	}
+}
+
+func NotificationReceiverModelResponseToContract(m *models.NotificationReceiverResponse) *contract.NotificationReceiverResponse {
+	if m == nil {
+		return nil
+	}
+	resp := &contract.NotificationReceiverResponse{
+		ID:             m.ID,
+		NotificationID: m.NotificationID,
+		UserID:         m.UserID,
+		IsRead:         m.IsRead,
+		ReadAt:         m.ReadAt,
+		IsDeleted:      m.IsDeleted,
+		DeletedAt:      m.DeletedAt,
+		CreatedAt:      m.CreatedAt,
+		UpdatedAt:      m.UpdatedAt,
+	}
+	if m.Notification != nil {
+		resp.Notification = NotificationModelResponseToContract(m.Notification)
+	}
+	return resp
+}
+
+func NotificationReceiverModelResponsesToContracts(ms []*models.NotificationReceiverResponse) []*contract.NotificationReceiverResponse {
+	if ms == nil {
+		return nil
+	}
+	result := make([]*contract.NotificationReceiverResponse, len(ms))
+	for i, m := range ms {
+		result[i] = NotificationReceiverModelResponseToContract(m)
+	}
+	return result
+}

internal/transformer/product_outlet_price_transformer.go

@@ -0,0 +1,55 @@
+package transformer
+
+import (
+	"apskel-pos-be/internal/contract"
+	"apskel-pos-be/internal/models"
+)
+
+func CreateProductOutletPriceRequestToModel(req *contract.CreateProductOutletPriceRequest) *models.CreateProductOutletPriceRequest {
+	if req == nil {
+		return nil
+	}
+
+	return &models.CreateProductOutletPriceRequest{
+		ProductID: req.ProductID,
+		OutletID:  req.OutletID,
+		Price:     req.Price,
+	}
+}
+
+func UpdateProductOutletPriceRequestToModel(req *contract.UpdateProductOutletPriceRequest) *models.UpdateProductOutletPriceRequest {
+	if req == nil {
+		return nil
+	}
+
+	return &models.UpdateProductOutletPriceRequest{
+		Price: &req.Price,
+	}
+}
+
+func ProductOutletPriceModelToResponse(m *models.ProductOutletPrice) *contract.ProductOutletPriceResponse {
+	if m == nil {
+		return nil
+	}
+
+	return &contract.ProductOutletPriceResponse{
+		ID:        m.ID,
+		ProductID: m.ProductID,
+		OutletID:  m.OutletID,
+		Price:     m.Price,
+		CreatedAt: m.CreatedAt,
+		UpdatedAt: m.UpdatedAt,
+	}
+}
+
+func ProductOutletPriceModelsToResponses(ms []*models.ProductOutletPrice) []contract.ProductOutletPriceResponse {
+	if ms == nil {
+		return nil
+	}
+
+	responses := make([]contract.ProductOutletPriceResponse, len(ms))
+	for i, m := range ms {
+		responses[i] = *ProductOutletPriceModelToResponse(m)
+	}
+	return responses
+}

internal/transformer/product_transformer.go

@@ -97,6 +97,19 @@ func ProductModelResponseToResponse(prod *models.ProductResponse) *contract.Prod
 		}
 	}
 
+	// Convert outlet prices
+	var outletPriceResponses []contract.ProductOutletPriceResponse
+	if len(prod.OutletPrices) > 0 {
+		outletPriceResponses = make([]contract.ProductOutletPriceResponse, len(prod.OutletPrices))
+		for i, op := range prod.OutletPrices {
+			outletPriceResponses[i] = contract.ProductOutletPriceResponse{
+				OutletID:   op.OutletID,
+				OutletName: op.OutletName,
+				Price:      op.Price,
+			}
+		}
+	}
+
 	return &contract.ProductResponse{
 		ID:             prod.ID,
 		OrganizationID: prod.OrganizationID,
@@ -106,6 +119,8 @@ func ProductModelResponseToResponse(prod *models.ProductResponse) *contract.Prod
 		Name:           prod.Name,
 		Description:    prod.Description,
 		Price:          prod.Price,
+		OutletPrice:    prod.OutletPrice,
+		OutletPrices:   outletPriceResponses,
 		Cost:           prod.Cost,
 		BusinessType:   string(prod.BusinessType),
 		ImageURL:       prod.ImageURL,

internal/transformer/user_device_transformer.go

@@ -0,0 +1,74 @@
+package transformer
+
+import (
+	"apskel-pos-be/internal/contract"
+	"apskel-pos-be/internal/models"
+)
+
+func RegisterUserDeviceRequestToModel(req *contract.RegisterUserDeviceRequest) *models.RegisterUserDeviceRequest {
+	return &models.RegisterUserDeviceRequest{
+		DeviceID:   req.DeviceID,
+		DeviceName: req.DeviceName,
+		DeviceType: req.DeviceType,
+		Platform:   req.Platform,
+		FCMToken:   req.FCMToken,
+		AppVersion: req.AppVersion,
+		OsVersion:  req.OsVersion,
+	}
+}
+
+func UpdateUserDeviceRequestToModel(req *contract.UpdateUserDeviceRequest) *models.UpdateUserDeviceRequest {
+	return &models.UpdateUserDeviceRequest{
+		DeviceName: req.DeviceName,
+		DeviceType: req.DeviceType,
+		Platform:   req.Platform,
+		FCMToken:   req.FCMToken,
+		AppVersion: req.AppVersion,
+		OsVersion:  req.OsVersion,
+	}
+}
+
+func ListUserDevicesRequestToModel(req *contract.ListUserDevicesRequest) *models.ListUserDevicesRequest {
+	return &models.ListUserDevicesRequest{
+		Page:     req.Page,
+		Limit:    req.Limit,
+		UserID:   req.UserID,
+		Platform: req.Platform,
+	}
+}
+
+func UserDeviceModelResponseToResponse(device *models.UserDeviceResponse) *contract.UserDeviceResponse {
+	if device == nil {
+		return nil
+	}
+	return &contract.UserDeviceResponse{
+		ID:           device.ID,
+		UserID:       device.UserID,
+		DeviceID:     device.DeviceID,
+		DeviceName:   device.DeviceName,
+		DeviceType:   device.DeviceType,
+		Platform:     device.Platform,
+		FCMToken:     device.FCMToken,
+		AppVersion:   device.AppVersion,
+		OsVersion:    device.OsVersion,
+		IPAddress:    device.IPAddress,
+		LastActiveAt: device.LastActiveAt,
+		CreatedAt:    device.CreatedAt,
+		UpdatedAt:    device.UpdatedAt,
+	}
+}
+
+func UserDeviceModelResponsesToResponses(devices []*models.UserDeviceResponse) []contract.UserDeviceResponse {
+	if devices == nil {
+		return nil
+	}
+
+	responses := make([]contract.UserDeviceResponse, len(devices))
+	for i, device := range devices {
+		response := UserDeviceModelResponseToResponse(device)
+		if response != nil {
+			responses[i] = *response
+		}
+	}
+	return responses
+}

internal/validator/notification_validator.go

@@ -0,0 +1,53 @@
+package validator
+
+import (
+	"fmt"
+
+	"apskel-pos-be/internal/constants"
+	"apskel-pos-be/internal/contract"
+)
+
+type NotificationValidator interface {
+	ValidateSendRequest(req *contract.SendNotificationRequest) (error, string)
+	ValidateBroadcastRequest(req *contract.BroadcastNotificationRequest) (error, string)
+	ValidateListRequest(req *contract.ListNotificationsRequest) (error, string)
+}
+
+type NotificationValidatorImpl struct{}
+
+func NewNotificationValidator() *NotificationValidatorImpl {
+	return &NotificationValidatorImpl{}
+}
+
+func (v *NotificationValidatorImpl) ValidateSendRequest(req *contract.SendNotificationRequest) (error, string) {
+	if req.Title == "" {
+		return fmt.Errorf("title is required"), constants.MissingFieldErrorCode
+	}
+	if req.Body == "" {
+		return fmt.Errorf("body is required"), constants.MissingFieldErrorCode
+	}
+	if len(req.ReceiverIDs) == 0 {
+		return fmt.Errorf("at least one receiver_id is required"), constants.MissingFieldErrorCode
+	}
+	return nil, ""
+}
+
+func (v *NotificationValidatorImpl) ValidateBroadcastRequest(req *contract.BroadcastNotificationRequest) (error, string) {
+	if req.Title == "" {
+		return fmt.Errorf("title is required"), constants.MissingFieldErrorCode
+	}
+	if req.Body == "" {
+		return fmt.Errorf("body is required"), constants.MissingFieldErrorCode
+	}
+	return nil, ""
+}
+
+func (v *NotificationValidatorImpl) ValidateListRequest(req *contract.ListNotificationsRequest) (error, string) {
+	if req.Page < 1 {
+		return fmt.Errorf("page must be greater than 0"), constants.ValidationErrorCode
+	}
+	if req.Limit < 1 || req.Limit > 100 {
+		return fmt.Errorf("limit must be between 1 and 100"), constants.ValidationErrorCode
+	}
+	return nil, ""
+}

internal/validator/product_outlet_price_validator.go

@@ -0,0 +1,80 @@
+package validator
+
+import (
+	"errors"
+	"fmt"
+
+	"apskel-pos-be/internal/constants"
+	"apskel-pos-be/internal/contract"
+
+	"github.com/google/uuid"
+)
+
+type ProductOutletPriceValidator interface {
+	ValidateCreateRequest(req *contract.CreateProductOutletPriceRequest) (error, string)
+	ValidateUpdateRequest(req *contract.UpdateProductOutletPriceRequest) (error, string)
+	ValidateBulkCreateRequest(req *contract.BulkCreateProductOutletPriceRequest) (error, string)
+}
+
+type ProductOutletPriceValidatorImpl struct{}
+
+func NewProductOutletPriceValidator() *ProductOutletPriceValidatorImpl {
+	return &ProductOutletPriceValidatorImpl{}
+}
+
+func (v *ProductOutletPriceValidatorImpl) ValidateCreateRequest(req *contract.CreateProductOutletPriceRequest) (error, string) {
+	if req == nil {
+		return errors.New("request body is required"), constants.MissingFieldErrorCode
+	}
+
+	if req.ProductID == uuid.Nil {
+		return errors.New("product_id is required"), constants.MissingFieldErrorCode
+	}
+
+	if req.OutletID == uuid.Nil {
+		return errors.New("outlet_id is required"), constants.MissingFieldErrorCode
+	}
+
+	if req.Price < 0 {
+		return errors.New("price must be non-negative"), constants.MalformedFieldErrorCode
+	}
+
+	return nil, ""
+}
+
+func (v *ProductOutletPriceValidatorImpl) ValidateUpdateRequest(req *contract.UpdateProductOutletPriceRequest) (error, string) {
+	if req == nil {
+		return errors.New("request body is required"), constants.MissingFieldErrorCode
+	}
+
+	if req.Price < 0 {
+		return errors.New("price must be non-negative"), constants.MalformedFieldErrorCode
+	}
+
+	return nil, ""
+}
+
+func (v *ProductOutletPriceValidatorImpl) ValidateBulkCreateRequest(req *contract.BulkCreateProductOutletPriceRequest) (error, string) {
+	if req == nil {
+		return errors.New("request body is required"), constants.MissingFieldErrorCode
+	}
+
+	if req.ProductID == uuid.Nil {
+		return errors.New("product_id is required"), constants.MissingFieldErrorCode
+	}
+
+	if len(req.Prices) == 0 {
+		return errors.New("at least one price entry is required"), constants.MissingFieldErrorCode
+	}
+
+	for i, p := range req.Prices {
+		if p.OutletID == uuid.Nil {
+			return errors.New("outlet_id is required for each price entry"), constants.MissingFieldErrorCode
+		}
+		if p.Price < 0 {
+			return fmt.Errorf("price at index %d must be non-negative", i), constants.MalformedFieldErrorCode
+		}
+	}
+
+	return nil, ""
+}

internal/validator/user_device_validator.go

@@ -0,0 +1,126 @@
+package validator
+
+import (
+	"errors"
+	"strings"
+
+	"apskel-pos-be/internal/constants"
+	"apskel-pos-be/internal/contract"
+	"apskel-pos-be/internal/entities"
+)
+
+type UserDeviceValidator interface {
+	ValidateRegisterDeviceRequest(req *contract.RegisterUserDeviceRequest) (error, string)
+	ValidateUpdateDeviceRequest(req *contract.UpdateUserDeviceRequest) (error, string)
+	ValidateListDevicesRequest(req *contract.ListUserDevicesRequest) (error, string)
+}
+
+type UserDeviceValidatorImpl struct{}
+
+func NewUserDeviceValidator() *UserDeviceValidatorImpl {
+	return &UserDeviceValidatorImpl{}
+}
+
+var validDeviceTypes = map[entities.DeviceType]bool{
+	entities.DeviceTypeMobile:  true,
+	entities.DeviceTypeTablet:  true,
+	entities.DeviceTypeDesktop: true,
+}
+
+var validPlatforms = map[entities.DevicePlatform]bool{
+	entities.DevicePlatformAndroid: true,
+	entities.DevicePlatformIOS:     true,
+	entities.DevicePlatformWeb:     true,
+}
+
+func (v *UserDeviceValidatorImpl) ValidateRegisterDeviceRequest(req *contract.RegisterUserDeviceRequest) (error, string) {
+	if req == nil {
+		return errors.New("request body is required"), constants.MissingFieldErrorCode
+	}
+
+	if strings.TrimSpace(req.DeviceID) == "" {
+		return errors.New("device_id is required"), constants.MissingFieldErrorCode
+	}
+
+	if len(req.DeviceID) > 255 {
+		return errors.New("device_id must be at most 255 characters"), constants.MalformedFieldErrorCode
+	}
+
+	if req.DeviceName != "" && len(req.DeviceName) > 255 {
+		return errors.New("device_name must be at most 255 characters"), constants.MalformedFieldErrorCode
+	}
+
+	if req.DeviceType != "" && !validDeviceTypes[req.DeviceType] {
+		return errors.New("device_type must be one of: mobile, tablet, desktop"), constants.MalformedFieldErrorCode
+	}
+
+	if req.Platform != "" && !validPlatforms[req.Platform] {
+		return errors.New("platform must be one of: android, ios, web"), constants.MalformedFieldErrorCode
+	}
+
+	if req.FCMToken != "" && len(req.FCMToken) > 512 {
+		return errors.New("fcm_token must be at most 512 characters"), constants.MalformedFieldErrorCode
+	}
+
+	if req.AppVersion != "" && len(req.AppVersion) > 50 {
+		return errors.New("app_version must be at most 50 characters"), constants.MalformedFieldErrorCode
+	}
+
+	if req.OsVersion != "" && len(req.OsVersion) > 50 {
+		return errors.New("os_version must be at most 50 characters"), constants.MalformedFieldErrorCode
+	}
+
+	return nil, ""
+}
+
+func (v *UserDeviceValidatorImpl) ValidateUpdateDeviceRequest(req *contract.UpdateUserDeviceRequest) (error, string) {
+	if req == nil {
+		return errors.New("request body is required"), constants.MissingFieldErrorCode
+	}
+
+	if req.DeviceName != "" && len(req.DeviceName) > 255 {
+		return errors.New("device_name must be at most 255 characters"), constants.MalformedFieldErrorCode
+	}
+
+	if req.DeviceType != "" && !validDeviceTypes[req.DeviceType] {
+		return errors.New("device_type must be one of: mobile, tablet, desktop"), constants.MalformedFieldErrorCode
+	}
+
+	if req.Platform != "" && !validPlatforms[req.Platform] {
+		return errors.New("platform must be one of: android, ios, web"), constants.MalformedFieldErrorCode
+	}
+
+	if req.FCMToken != "" && len(req.FCMToken) > 512 {
+		return errors.New("fcm_token must be at most 512 characters"), constants.MalformedFieldErrorCode
+	}
+
+	if req.AppVersion != "" && len(req.AppVersion) > 50 {
+		return errors.New("app_version must be at most 50 characters"), constants.MalformedFieldErrorCode
+	}
+
+	if req.OsVersion != "" && len(req.OsVersion) > 50 {
+		return errors.New("os_version must be at most 50 characters"), constants.MalformedFieldErrorCode
+	}
+
+	return nil, ""
+}
+
+func (v *UserDeviceValidatorImpl) ValidateListDevicesRequest(req *contract.ListUserDevicesRequest) (error, string) {
+	if req == nil {
+		return errors.New("request body is required"), constants.MissingFieldErrorCode
+	}
+
+	if req.Page < 1 {
+		return errors.New("page must be at least 1"), constants.MalformedFieldErrorCode
+	}
+
+	if req.Limit < 1 || req.Limit > 100 {
+		return errors.New("limit must be between 1 and 100"), constants.MalformedFieldErrorCode
+	}
+
+	if req.Platform != "" && !validPlatforms[entities.DevicePlatform(req.Platform)] {
+		return errors.New("platform must be one of: android, ios, web"), constants.MalformedFieldErrorCode
+	}
+
+	return nil, ""
+}

migrations/000064_add_fcm_token_to_users.down.sql

@@ -1 +0,0 @@
-ALTER TABLE users DROP COLUMN fcm_token;

migrations/000064_add_fcm_token_to_users.up.sql

@@ -1 +0,0 @@
-ALTER TABLE users ADD COLUMN fcm_token VARCHAR(512) NULL;

migrations/000064_create_user_devices_table.down.sql

@@ -0,0 +1 @@
+DROP TABLE IF EXISTS user_devices;

migrations/000064_create_user_devices_table.up.sql

@@ -0,0 +1,22 @@
+-- User devices table
+CREATE TABLE user_devices (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    device_id VARCHAR(255) NOT NULL,
+    device_name VARCHAR(255),
+    device_type VARCHAR(50) CHECK (device_type IN ('mobile', 'tablet', 'desktop')),
+    platform VARCHAR(50) CHECK (platform IN ('android', 'ios', 'web')),
+    fcm_token VARCHAR(512),
+    app_version VARCHAR(50),
+    os_version VARCHAR(50),
+    ip_address VARCHAR(45),
+    last_active_at TIMESTAMP WITH TIME ZONE,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
+);
+
+-- Indexes
+CREATE INDEX idx_user_devices_user_id ON user_devices(user_id);
+CREATE INDEX idx_user_devices_device_id ON user_devices(device_id);
+CREATE INDEX idx_user_devices_fcm_token ON user_devices(fcm_token);
+CREATE UNIQUE INDEX idx_user_devices_user_device ON user_devices(user_id, device_id);

migrations/000065_create_notifications_table.down.sql

@@ -0,0 +1 @@
+DROP TABLE IF EXISTS notifications;

migrations/000065_create_notifications_table.up.sql

@@ -0,0 +1,28 @@
+-- Notifications table (master notification record)
+CREATE TABLE notifications (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    title VARCHAR(255) NOT NULL,
+    body TEXT,
+    type VARCHAR(100),
+    category VARCHAR(100),
+    priority VARCHAR(50) NOT NULL DEFAULT 'normal' CHECK (priority IN ('low', 'normal', 'high')),
+    image_url VARCHAR(512),
+    action_url VARCHAR(512),
+    notifiable_type VARCHAR(100),
+    notifiable_id UUID,
+    data JSONB,
+    scheduled_at TIMESTAMP WITH TIME ZONE,
+    sent_at TIMESTAMP WITH TIME ZONE,
+    expired_at TIMESTAMP WITH TIME ZONE,
+    created_by UUID REFERENCES users(id) ON DELETE SET NULL,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
+);
+
+-- Indexes
+CREATE INDEX idx_notifications_created_by ON notifications(created_by);
+CREATE INDEX idx_notifications_type ON notifications(type);
+CREATE INDEX idx_notifications_category ON notifications(category);
+CREATE INDEX idx_notifications_notifiable ON notifications(notifiable_type, notifiable_id);
+CREATE INDEX idx_notifications_scheduled_at ON notifications(scheduled_at);
+CREATE INDEX idx_notifications_sent_at ON notifications(sent_at);

migrations/000066_create_notification_receivers_table.down.sql

@@ -0,0 +1 @@
+DROP TABLE IF EXISTS notification_receivers;

migrations/000066_create_notification_receivers_table.up.sql

@@ -0,0 +1,18 @@
+-- Notification receivers table (links a notification to a specific user)
+CREATE TABLE notification_receivers (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    notification_id UUID NOT NULL REFERENCES notifications(id) ON DELETE CASCADE,
+    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    is_read BOOLEAN NOT NULL DEFAULT FALSE,
+    read_at TIMESTAMP WITH TIME ZONE,
+    is_deleted BOOLEAN NOT NULL DEFAULT FALSE,
+    deleted_at TIMESTAMP WITH TIME ZONE,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
+);
+
+-- Indexes
+CREATE INDEX idx_notification_receivers_notification_id ON notification_receivers(notification_id);
+CREATE INDEX idx_notification_receivers_user_id ON notification_receivers(user_id);
+CREATE INDEX idx_notification_receivers_user_unread ON notification_receivers(user_id, is_read) WHERE is_deleted = FALSE;
+CREATE UNIQUE INDEX idx_notification_receivers_unique ON notification_receivers(notification_id, user_id);

migrations/000067_create_notification_deliveries_table.down.sql

@@ -0,0 +1 @@
+DROP TABLE IF EXISTS notification_deliveries;

migrations/000067_create_notification_deliveries_table.up.sql

@@ -0,0 +1,23 @@
+-- Notification deliveries table (tracks per-device delivery attempts)
+CREATE TABLE notification_deliveries (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    notification_receiver_id UUID NOT NULL REFERENCES notification_receivers(id) ON DELETE CASCADE,
+    user_device_id UUID NOT NULL REFERENCES user_devices(id) ON DELETE CASCADE,
+    channel VARCHAR(50) NOT NULL DEFAULT 'push' CHECK (channel IN ('push', 'websocket', 'email')),
+    delivery_status VARCHAR(50) NOT NULL DEFAULT 'pending' CHECK (delivery_status IN ('pending', 'sent', 'delivered', 'failed')),
+    provider VARCHAR(50) CHECK (provider IN ('firebase', 'onesignal')),
+    provider_message_id VARCHAR(255),
+    sent_at TIMESTAMP WITH TIME ZONE,
+    delivered_at TIMESTAMP WITH TIME ZONE,
+    failed_at TIMESTAMP WITH TIME ZONE,
+    failure_reason TEXT,
+    retry_count INT NOT NULL DEFAULT 0,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
+);
+
+-- Indexes
+CREATE INDEX idx_notification_deliveries_receiver_id ON notification_deliveries(notification_receiver_id);
+CREATE INDEX idx_notification_deliveries_device_id ON notification_deliveries(user_device_id);
+CREATE INDEX idx_notification_deliveries_status ON notification_deliveries(delivery_status);
+CREATE INDEX idx_notification_deliveries_provider ON notification_deliveries(provider);

migrations/000068_create_product_outlet_prices_table.down.sql

@@ -0,0 +1 @@
+DROP TABLE IF EXISTS product_outlet_prices;

migrations/000068_create_product_outlet_prices_table.up.sql

@@ -0,0 +1,12 @@
+CREATE TABLE product_outlet_prices (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    product_id UUID NOT NULL REFERENCES products(id) ON DELETE CASCADE,
+    outlet_id UUID NOT NULL REFERENCES outlets(id) ON DELETE CASCADE,
+    price DECIMAL(10,2) NOT NULL,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
+);
+
+CREATE UNIQUE INDEX idx_product_outlet_prices_product_outlet ON product_outlet_prices(product_id, outlet_id);
+CREATE INDEX idx_product_outlet_prices_product_id ON product_outlet_prices(product_id);
+CREATE INDEX idx_product_outlet_prices_outlet_id ON product_outlet_prices(outlet_id);