Merge pull request 'Update profit-loss' (#20) from feature/exclusive-summary into main

Reviewed-on: #20

internal/repository/analytics_repository.go

@@ -2,6 +2,7 @@ package repository
 
 import (
 	"context"
+	"sort"
 	"time"
 
 	"apskel-pos-be/internal/entities"
@@ -43,6 +44,14 @@ func purchaseOrderItemTotalAmountSQL() string {
 	return "CASE WHEN pc.type = '" + string(entities.PurchaseCategoryTypeRawMaterial) + "' THEN COALESCE(poi.quantity, 0) * poi.amount ELSE poi.amount END"
 }
 
+func purchaseOrderRawMaterialAmountSQL() string {
+	return "CASE WHEN pc.type = '" + string(entities.PurchaseCategoryTypeRawMaterial) + "' THEN " + purchaseOrderItemTotalAmountSQL() + " ELSE 0 END"
+}
+
+func purchaseOrderExpenseAmountSQL() string {
+	return "CASE WHEN pc.type = '" + string(entities.PurchaseCategoryTypeExpense) + "' THEN " + purchaseOrderItemTotalAmountSQL() + " ELSE 0 END"
+}
+
 func (r *AnalyticsRepositoryImpl) GetPaymentMethodAnalytics(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time) ([]*entities.PaymentMethodAnalytics, error) {
 	var results []*entities.PaymentMethodAnalytics
 
@@ -158,7 +167,11 @@ func (r *AnalyticsRepositoryImpl) getPurchaseOrderPurchasingAnalytics(ctx contex
 		Table("purchase_orders po").
 		Select(`
 			COALESCE(SUM(`+purchaseOrderItemTotalAmountSQL()+`), 0) as total_purchases,
+			COALESCE(SUM(`+purchaseOrderRawMaterialAmountSQL()+`), 0) as raw_material_purchases,
+			COALESCE(SUM(`+purchaseOrderExpenseAmountSQL()+`), 0) as expense_purchases,
 			COUNT(DISTINCT po.id) as total_purchase_orders,
+			COUNT(DISTINCT CASE WHEN pc.type = '`+string(entities.PurchaseCategoryTypeRawMaterial)+`' THEN po.id END) as raw_material_purchase_orders,
+			COUNT(CASE WHEN pc.type = '`+string(entities.PurchaseCategoryTypeExpense)+`' THEN poi.id END) as expense_count,
 			COALESCE(SUM(poi.quantity), 0) as total_quantity,
 			CASE
 				WHEN COUNT(DISTINCT po.id) > 0
@@ -199,7 +212,11 @@ func (r *AnalyticsRepositoryImpl) getPurchaseOrderPurchasingAnalytics(ctx contex
 		Select(`
 			`+dateFormat+` as date,
 			COALESCE(SUM(`+purchaseOrderItemTotalAmountSQL()+`), 0) as purchases,
+			COALESCE(SUM(`+purchaseOrderRawMaterialAmountSQL()+`), 0) as raw_material_purchases,
+			COALESCE(SUM(`+purchaseOrderExpenseAmountSQL()+`), 0) as expense_purchases,
 			COUNT(DISTINCT po.id) as purchase_orders,
+			COUNT(DISTINCT CASE WHEN pc.type = '`+string(entities.PurchaseCategoryTypeRawMaterial)+`' THEN po.id END) as raw_material_purchase_orders,
+			COUNT(CASE WHEN pc.type = '`+string(entities.PurchaseCategoryTypeExpense)+`' THEN poi.id END) as expense_count,
 			COALESCE(SUM(poi.quantity), 0) as quantity,
 			COUNT(DISTINCT i.id) as ingredients,
 			COUNT(DISTINCT COALESCE(po.vendor_id::text, 'no-vendor')) as vendors
@@ -210,6 +227,7 @@ func (r *AnalyticsRepositoryImpl) getPurchaseOrderPurchasingAnalytics(ctx contex
 		Joins("LEFT JOIN units u ON poi.unit_id = u.id").
 		Where("po.organization_id = ?", organizationID).
 		Where("po.status != ?", "cancelled").
+		Where("pc.type = ?", entities.PurchaseCategoryTypeRawMaterial).
 		Where("po.transaction_date >= ? AND po.transaction_date <= ?", dateFrom, dateTo).
 		Group(dateFormat).
 		Order(dateFormat)
@@ -494,6 +512,11 @@ func (r *AnalyticsRepositoryImpl) GetProfitLossAnalytics(ctx context.Context, or
 	if err := summaryQuery.Scan(&summary).Error; err != nil {
 		return nil, err
 	}
+	periodHPP, err := r.getPurchaseOrderRawMaterialTotal(ctx, organizationID, outletID, dateFrom, dateTo)
+	if err != nil {
+		return nil, err
+	}
+	applyProfitLossSummaryCost(&summary, periodHPP)
 
 	var timeFormat string
 	switch groupBy {
@@ -541,6 +564,11 @@ func (r *AnalyticsRepositoryImpl) GetProfitLossAnalytics(ctx context.Context, or
 	if err := dataQuery.Scan(&data).Error; err != nil {
 		return nil, err
 	}
+	poCostData, err := r.getPurchaseOrderRawMaterialCostByPeriod(ctx, organizationID, outletID, dateFrom, dateTo, groupBy)
+	if err != nil {
+		return nil, err
+	}
+	data = mergeProfitLossDataWithPurchaseOrderCost(data, poCostData)
 
 	var productData []entities.ProductProfitData
 	productQuery := r.db.WithContext(ctx).
@@ -601,6 +629,11 @@ func (r *AnalyticsRepositoryImpl) GetProfitLossAnalytics(ctx context.Context, or
 	if err := todayQuery.Scan(&todayRC).Error; err != nil {
 		return nil, err
 	}
+	todayHPP, err := r.getPurchaseOrderRawMaterialTotal(ctx, organizationID, outletID, todayStart, todayEnd)
+	if err != nil {
+		return nil, err
+	}
+	todayRC.Cost = todayHPP
 
 	var mtdRC revenueCostResult
 	mtdQuery := r.db.WithContext(ctx).
@@ -618,21 +651,41 @@ func (r *AnalyticsRepositoryImpl) GetProfitLossAnalytics(ctx context.Context, or
 	if err := mtdQuery.Scan(&mtdRC).Error; err != nil {
 		return nil, err
 	}
+	mtdHPP, err := r.getPurchaseOrderRawMaterialTotal(ctx, organizationID, outletID, mtdStart, todayEnd)
+	if err != nil {
+		return nil, err
+	}
+	mtdRC.Cost = mtdHPP
 
 	todayExpenseByCategory, err := r.getExpenseByCategory(ctx, organizationID, outletID, todayStart, todayEnd)
 	if err != nil {
 		return nil, err
 	}
+	todayPOExpenseByCategory, err := r.getPurchaseOrderExpenseByCategory(ctx, organizationID, outletID, todayStart, todayEnd)
+	if err != nil {
+		return nil, err
+	}
+	todayExpenseByCategory = mergeExpenseCategoryTotals(todayExpenseByCategory, todayPOExpenseByCategory)
 
 	mtdExpenseByCategory, err := r.getExpenseByCategory(ctx, organizationID, outletID, mtdStart, todayEnd)
 	if err != nil {
 		return nil, err
 	}
+	mtdPOExpenseByCategory, err := r.getPurchaseOrderExpenseByCategory(ctx, organizationID, outletID, mtdStart, todayEnd)
+	if err != nil {
+		return nil, err
+	}
+	mtdExpenseByCategory = mergeExpenseCategoryTotals(mtdExpenseByCategory, mtdPOExpenseByCategory)
 
 	opsItems, err := r.getOperationalExpenseItems(ctx, organizationID, outletID, mtdStart, todayEnd)
 	if err != nil {
 		return nil, err
 	}
+	poOpsItems, err := r.getPurchaseOrderExpenseItems(ctx, organizationID, outletID, mtdStart, todayEnd)
+	if err != nil {
+		return nil, err
+	}
+	opsItems = mergeOperationalExpenseItems(opsItems, poOpsItems)
 
 	return &entities.ProfitLossAnalytics{
 		Summary:                 summary,
@@ -648,6 +701,200 @@ func (r *AnalyticsRepositoryImpl) GetProfitLossAnalytics(ctx context.Context, or
 	}, nil
 }
 
+func (r *AnalyticsRepositoryImpl) getPurchaseOrderRawMaterialTotal(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time) (float64, error) {
+	type totalResult struct {
+		Total float64
+	}
+	var result totalResult
+
+	query := r.db.WithContext(ctx).
+		Table("purchase_order_items poi").
+		Select(`COALESCE(SUM(`+purchaseOrderItemTotalAmountSQL()+`), 0) as total`).
+		Joins("JOIN purchase_orders po ON poi.purchase_order_id = po.id").
+		Joins("JOIN purchase_categories pc ON poi.purchase_category_id = pc.id").
+		Where("po.organization_id = ?", organizationID).
+		Where("po.status = ?", "received").
+		Where("pc.type = ?", entities.PurchaseCategoryTypeRawMaterial).
+		Where("po.transaction_date >= ? AND po.transaction_date <= ?", dateFrom, dateTo)
+	query = r.applyPurchaseOrderItemOutletFilter(query, outletID)
+
+	if err := query.Scan(&result).Error; err != nil {
+		return 0, err
+	}
+	return result.Total, nil
+}
+
+func (r *AnalyticsRepositoryImpl) getPurchaseOrderRawMaterialCostByPeriod(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time, groupBy string) ([]entities.ProfitLossData, error) {
+	var dateFormat string
+	switch groupBy {
+	case "hour":
+		dateFormat = "DATE_TRUNC('hour', po.transaction_date::timestamp)"
+	case "week":
+		dateFormat = "DATE_TRUNC('week', po.transaction_date::timestamp)"
+	case "month":
+		dateFormat = "DATE_TRUNC('month', po.transaction_date::timestamp)"
+	default:
+		dateFormat = "DATE_TRUNC('day', po.transaction_date::timestamp)"
+	}
+
+	var results []entities.ProfitLossData
+	query := r.db.WithContext(ctx).
+		Table("purchase_order_items poi").
+		Select(`
+			`+dateFormat+` as date,
+			COALESCE(SUM(`+purchaseOrderItemTotalAmountSQL()+`), 0) as cost
+		`).
+		Joins("JOIN purchase_orders po ON poi.purchase_order_id = po.id").
+		Joins("JOIN purchase_categories pc ON poi.purchase_category_id = pc.id").
+		Where("po.organization_id = ?", organizationID).
+		Where("po.status = ?", "received").
+		Where("pc.type = ?", entities.PurchaseCategoryTypeRawMaterial).
+		Where("po.transaction_date >= ? AND po.transaction_date <= ?", dateFrom, dateTo).
+		Group(dateFormat).
+		Order(dateFormat)
+	query = r.applyPurchaseOrderItemOutletFilter(query, outletID)
+
+	if err := query.Scan(&results).Error; err != nil {
+		return nil, err
+	}
+	return results, nil
+}
+
+func applyProfitLossSummaryCost(summary *entities.ProfitLossSummary, cost float64) {
+	summary.TotalCost = cost
+	summary.GrossProfit = summary.TotalRevenue - cost
+	summary.GrossProfitMargin = ratio(summary.GrossProfit, summary.TotalRevenue)
+	summary.NetProfit = summary.TotalRevenue - cost - summary.TotalDiscount
+	summary.NetProfitMargin = ratio(summary.NetProfit, summary.TotalRevenue)
+	if summary.TotalOrders > 0 {
+		summary.AverageProfit = summary.NetProfit / float64(summary.TotalOrders)
+	} else {
+		summary.AverageProfit = 0
+	}
+	summary.ProfitabilityRatio = ratio(summary.GrossProfit, cost)
+}
+
+func mergeProfitLossDataWithPurchaseOrderCost(data, costs []entities.ProfitLossData) []entities.ProfitLossData {
+	indexByDate := make(map[time.Time]int, len(data))
+	for i, item := range data {
+		data[i].Cost = 0
+		indexByDate[item.Date] = i
+	}
+
+	for _, cost := range costs {
+		if i, ok := indexByDate[cost.Date]; ok {
+			data[i].Cost = cost.Cost
+			continue
+		}
+
+		indexByDate[cost.Date] = len(data)
+		data = append(data, entities.ProfitLossData{Date: cost.Date, Cost: cost.Cost})
+	}
+
+	for i := range data {
+		data[i].GrossProfit = data[i].Revenue - data[i].Cost
+		data[i].GrossProfitMargin = ratio(data[i].GrossProfit, data[i].Revenue)
+		data[i].NetProfit = data[i].Revenue - data[i].Cost - data[i].Discount
+		data[i].NetProfitMargin = ratio(data[i].NetProfit, data[i].Revenue)
+	}
+
+	sort.Slice(data, func(i, j int) bool {
+		return data[i].Date.Before(data[j].Date)
+	})
+	return data
+}
+
+func ratio(numerator, denominator float64) float64 {
+	if denominator == 0 {
+		return 0
+	}
+	return (numerator / denominator) * 100
+}
+
+func (r *AnalyticsRepositoryImpl) getPurchaseOrderExpenseByCategory(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time) ([]entities.ExpenseCategoryTotal, error) {
+	var results []entities.ExpenseCategoryTotal
+
+	query := r.db.WithContext(ctx).
+		Table("purchase_order_items poi").
+		Select(`
+			pc.name as category_name,
+			COALESCE(SUM(`+purchaseOrderItemTotalAmountSQL()+`), 0) as amount
+		`).
+		Joins("JOIN purchase_orders po ON poi.purchase_order_id = po.id").
+		Joins("JOIN purchase_categories pc ON poi.purchase_category_id = pc.id").
+		Where("po.organization_id = ?", organizationID).
+		Where("po.status = ?", "received").
+		Where("pc.type = ?", entities.PurchaseCategoryTypeExpense).
+		Where("po.transaction_date >= ? AND po.transaction_date <= ?", dateFrom, dateTo).
+		Group("pc.id, pc.name, pc.sort_order").
+		Order("pc.sort_order ASC, pc.name ASC")
+	query = r.applyPurchaseOrderItemOutletFilter(query, outletID)
+
+	if err := query.Scan(&results).Error; err != nil {
+		return nil, err
+	}
+	return results, nil
+}
+
+func (r *AnalyticsRepositoryImpl) getPurchaseOrderExpenseItems(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time) ([]entities.OperationalExpenseItem, error) {
+	var results []entities.OperationalExpenseItem
+
+	query := r.db.WithContext(ctx).
+		Table("purchase_order_items poi").
+		Select(`
+			COALESCE(NULLIF(poi.description, ''), pc.name) as item,
+			COALESCE(SUM(`+purchaseOrderItemTotalAmountSQL()+`), 0) as amount
+		`).
+		Joins("JOIN purchase_orders po ON poi.purchase_order_id = po.id").
+		Joins("JOIN purchase_categories pc ON poi.purchase_category_id = pc.id").
+		Where("po.organization_id = ?", organizationID).
+		Where("po.status = ?", "received").
+		Where("pc.type = ?", entities.PurchaseCategoryTypeExpense).
+		Where("po.transaction_date >= ? AND po.transaction_date <= ?", dateFrom, dateTo).
+		Group("COALESCE(NULLIF(poi.description, ''), pc.name)").
+		Order("amount DESC")
+	query = r.applyPurchaseOrderItemOutletFilter(query, outletID)
+
+	if err := query.Scan(&results).Error; err != nil {
+		return nil, err
+	}
+	return results, nil
+}
+
+func mergeExpenseCategoryTotals(base, extra []entities.ExpenseCategoryTotal) []entities.ExpenseCategoryTotal {
+	indexByName := make(map[string]int, len(base))
+	for i, item := range base {
+		indexByName[item.CategoryName] = i
+	}
+
+	for _, item := range extra {
+		if i, ok := indexByName[item.CategoryName]; ok {
+			base[i].Amount += item.Amount
+			continue
+		}
+		indexByName[item.CategoryName] = len(base)
+		base = append(base, item)
+	}
+	return base
+}
+
+func mergeOperationalExpenseItems(base, extra []entities.OperationalExpenseItem) []entities.OperationalExpenseItem {
+	indexByName := make(map[string]int, len(base))
+	for i, item := range base {
+		indexByName[item.Item] = i
+	}
+
+	for _, item := range extra {
+		if i, ok := indexByName[item.Item]; ok {
+			base[i].Amount += item.Amount
+			continue
+		}
+		indexByName[item.Item] = len(base)
+		base = append(base, item)
+	}
+	return base
+}
+
 func (r *AnalyticsRepositoryImpl) getExpenseByCategory(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time) ([]entities.ExpenseCategoryTotal, error) {
 	var results []entities.ExpenseCategoryTotal