add purchasing in analytics endpoint

2026-05-19 14:45:26 +07:00
parent 6d735c20cb
commit 35e7152abb
15 changed files with 839 additions and 1 deletions
@@ -13,6 +13,7 @@ import (
 type AnalyticsRepository interface {
 	GetPaymentMethodAnalytics(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time) ([]*entities.PaymentMethodAnalytics, error)
 	GetSalesAnalytics(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time, groupBy string) ([]*entities.SalesAnalytics, error)
+	GetPurchasingAnalytics(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time, groupBy string) (*entities.PurchasingAnalytics, error)
 	GetProductAnalytics(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time, limit int) ([]*entities.ProductAnalytics, error)
 	GetProductAnalyticsPerCategory(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time) ([]*entities.ProductAnalyticsPerCategory, error)
 	GetDashboardOverview(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time) (*entities.DashboardOverview, error)
@@ -122,6 +123,159 @@ func (r *AnalyticsRepositoryImpl) GetSalesAnalytics(ctx context.Context, organiz
 	return results, err
 }

+func (r *AnalyticsRepositoryImpl) GetPurchasingAnalytics(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time, groupBy string) (*entities.PurchasingAnalytics, error) {
+	var summary entities.PurchasingSummary
+	var outletName *string
+
+	if outletID != nil {
+		var outlet struct {
+			Name string
+		}
+		result := r.db.WithContext(ctx).
+			Table("outlets").
+			Select("name").
+			Where("id = ? AND organization_id = ?", *outletID, organizationID).
+			Limit(1).
+			Scan(&outlet)
+		if result.Error != nil {
+			return nil, result.Error
+		}
+		if result.RowsAffected > 0 {
+			outletName = &outlet.Name
+		}
+	}
+
+	summaryQuery := r.db.WithContext(ctx).
+		Table("inventory_movements im").
+		Select(`
+			COALESCE(SUM(im.total_cost), 0) as total_purchases,
+			COUNT(DISTINCT im.reference_id) as total_purchase_orders,
+			COALESCE(SUM(im.quantity), 0) as total_quantity,
+			CASE
+				WHEN COUNT(DISTINCT im.reference_id) > 0
+				THEN COALESCE(SUM(im.total_cost), 0) / COUNT(DISTINCT im.reference_id)
+				ELSE 0
+			END as average_purchase_order_value,
+			COUNT(DISTINCT im.item_id) as total_ingredients,
+			COUNT(DISTINCT po.vendor_id) as total_vendors
+		`).
+		Joins("LEFT JOIN purchase_orders po ON im.reference_id = po.id").
+		Where("im.organization_id = ?", organizationID).
+		Where("im.movement_type = ?", entities.InventoryMovementTypePurchase).
+		Where("im.item_type = ?", "INGREDIENT").
+		Where("im.reference_type = ?", entities.InventoryMovementReferenceTypePurchaseOrder).
+		Where("im.created_at >= ? AND im.created_at <= ?", dateFrom, dateTo)
+
+	summaryQuery = r.resolveOutletID(summaryQuery, outletID, "im.outlet_id")
+
+	if err := summaryQuery.Scan(&summary).Error; err != nil {
+		return nil, err
+	}
+
+	var dateFormat string
+	switch groupBy {
+	case "hour":
+		dateFormat = "DATE_TRUNC('hour', im.created_at)"
+	case "week":
+		dateFormat = "DATE_TRUNC('week', im.created_at)"
+	case "month":
+		dateFormat = "DATE_TRUNC('month', im.created_at)"
+	default:
+		dateFormat = "DATE_TRUNC('day', im.created_at)"
+	}
+
+	var data []entities.PurchasingAnalyticsData
+	dataQuery := r.db.WithContext(ctx).
+		Table("inventory_movements im").
+		Select(`
+			`+dateFormat+` as date,
+			COALESCE(SUM(im.total_cost), 0) as purchases,
+			COUNT(DISTINCT im.reference_id) as purchase_orders,
+			COALESCE(SUM(im.quantity), 0) as quantity,
+			COUNT(DISTINCT im.item_id) as ingredients,
+			COUNT(DISTINCT po.vendor_id) as vendors
+		`).
+		Joins("LEFT JOIN purchase_orders po ON im.reference_id = po.id").
+		Where("im.organization_id = ?", organizationID).
+		Where("im.movement_type = ?", entities.InventoryMovementTypePurchase).
+		Where("im.item_type = ?", "INGREDIENT").
+		Where("im.reference_type = ?", entities.InventoryMovementReferenceTypePurchaseOrder).
+		Where("im.created_at >= ? AND im.created_at <= ?", dateFrom, dateTo).
+		Group(dateFormat).
+		Order(dateFormat)
+
+	dataQuery = r.resolveOutletID(dataQuery, outletID, "im.outlet_id")
+
+	if err := dataQuery.Scan(&data).Error; err != nil {
+		return nil, err
+	}
+
+	var ingredientData []entities.PurchasingIngredientData
+	ingredientQuery := r.db.WithContext(ctx).
+		Table("inventory_movements im").
+		Select(`
+			i.id as ingredient_id,
+			i.name as ingredient_name,
+			COALESCE(SUM(im.quantity), 0) as quantity,
+			COALESCE(SUM(im.total_cost), 0) as total_cost,
+			CASE
+				WHEN SUM(im.quantity) > 0
+				THEN COALESCE(SUM(im.total_cost), 0) / SUM(im.quantity)
+				ELSE 0
+			END as average_unit_cost,
+			COUNT(DISTINCT im.reference_id) as purchase_order_count
+		`).
+		Joins("JOIN ingredients i ON im.item_id = i.id").
+		Where("im.organization_id = ?", organizationID).
+		Where("im.movement_type = ?", entities.InventoryMovementTypePurchase).
+		Where("im.item_type = ?", "INGREDIENT").
+		Where("im.reference_type = ?", entities.InventoryMovementReferenceTypePurchaseOrder).
+		Where("im.created_at >= ? AND im.created_at <= ?", dateFrom, dateTo).
+		Group("i.id, i.name").
+		Order("total_cost DESC")
+
+	ingredientQuery = r.resolveOutletID(ingredientQuery, outletID, "im.outlet_id")
+
+	if err := ingredientQuery.Scan(&ingredientData).Error; err != nil {
+		return nil, err
+	}
+
+	var vendorData []entities.PurchasingVendorData
+	vendorQuery := r.db.WithContext(ctx).
+		Table("inventory_movements im").
+		Select(`
+			v.id as vendor_id,
+			v.name as vendor_name,
+			COALESCE(SUM(im.total_cost), 0) as total_cost,
+			COUNT(DISTINCT im.reference_id) as purchase_order_count,
+			COUNT(DISTINCT im.item_id) as ingredient_count,
+			COALESCE(SUM(im.quantity), 0) as quantity
+		`).
+		Joins("JOIN purchase_orders po ON im.reference_id = po.id").
+		Joins("JOIN vendors v ON po.vendor_id = v.id").
+		Where("im.organization_id = ?", organizationID).
+		Where("im.movement_type = ?", entities.InventoryMovementTypePurchase).
+		Where("im.item_type = ?", "INGREDIENT").
+		Where("im.reference_type = ?", entities.InventoryMovementReferenceTypePurchaseOrder).
+		Where("im.created_at >= ? AND im.created_at <= ?", dateFrom, dateTo).
+		Group("v.id, v.name").
+		Order("total_cost DESC")
+
+	vendorQuery = r.resolveOutletID(vendorQuery, outletID, "im.outlet_id")
+
+	if err := vendorQuery.Scan(&vendorData).Error; err != nil {
+		return nil, err
+	}
+
+	return &entities.PurchasingAnalytics{
+		OutletName:     outletName,
+		Summary:        summary,
+		Data:           data,
+		IngredientData: ingredientData,
+		VendorData:     vendorData,
+	}, nil
+}
+
 func (r *AnalyticsRepositoryImpl) GetProductAnalytics(ctx context.Context, organizationID uuid.UUID, outletID *uuid.UUID, dateFrom, dateTo time.Time, limit int) ([]*entities.ProductAnalytics, error) {
 	var results []*entities.ProductAnalytics

@@ -28,6 +28,10 @@ func NewTxManager(db *gorm.DB) *TxManager { return &TxManager{db: db} }

 // WithTransaction runs fn inside a DB transaction, injecting the *gorm.DB tx into ctx.
 func (m *TxManager) WithTransaction(ctx context.Context, fn func(ctx context.Context) error) error {
+	if m == nil || m.db == nil {
+		return fn(ctx)
+	}
+
 	return m.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
 		ctxTx := context.WithValue(ctx, txKey, tx)
 		return fn(ctxTx)