Update

internal/processor/analytics_processor.go

@@ -13,6 +13,7 @@ type AnalyticsProcessor interface {
 	GetPaymentMethodAnalytics(ctx context.Context, req *models.PaymentMethodAnalyticsRequest) (*models.PaymentMethodAnalyticsResponse, error)
 	GetSalesAnalytics(ctx context.Context, req *models.SalesAnalyticsRequest) (*models.SalesAnalyticsResponse, error)
 	GetProductAnalytics(ctx context.Context, req *models.ProductAnalyticsRequest) (*models.ProductAnalyticsResponse, error)
+	GetProductAnalyticsPerCategory(ctx context.Context, req *models.ProductAnalyticsPerCategoryRequest) (*models.ProductAnalyticsPerCategoryResponse, error)
 	GetDashboardAnalytics(ctx context.Context, req *models.DashboardAnalyticsRequest) (*models.DashboardAnalyticsResponse, error)
 	GetProfitLossAnalytics(ctx context.Context, req *models.ProfitLossAnalyticsRequest) (*models.ProfitLossAnalyticsResponse, error)
 }
@@ -204,6 +205,40 @@ func (p *AnalyticsProcessorImpl) GetProductAnalytics(ctx context.Context, req *m
 	}, nil
 }
 
+func (p *AnalyticsProcessorImpl) GetProductAnalyticsPerCategory(ctx context.Context, req *models.ProductAnalyticsPerCategoryRequest) (*models.ProductAnalyticsPerCategoryResponse, error) {
+	// Validate date range
+	if req.DateFrom.After(req.DateTo) {
+		return nil, fmt.Errorf("date_from cannot be after date_to")
+	}
+
+	// Get analytics data from repository
+	analyticsData, err := p.analyticsRepo.GetProductAnalyticsPerCategory(ctx, req.OrganizationID, req.OutletID, req.DateFrom, req.DateTo)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get product analytics per category: %w", err)
+	}
+
+	// Transform data
+	var resultData []models.ProductAnalyticsPerCategoryData
+	for _, data := range analyticsData {
+		resultData = append(resultData, models.ProductAnalyticsPerCategoryData{
+			CategoryID:   data.CategoryID,
+			CategoryName: data.CategoryName,
+			TotalRevenue: data.TotalRevenue,
+			TotalQuantity: data.TotalQuantity,
+			ProductCount: data.ProductCount,
+			OrderCount:   data.OrderCount,
+		})
+	}
+
+	return &models.ProductAnalyticsPerCategoryResponse{
+		OrganizationID: req.OrganizationID,
+		OutletID:       req.OutletID,
+		DateFrom:       req.DateFrom,
+		DateTo:         req.DateTo,
+		Data:           resultData,
+	}, nil
+}
+
 func (p *AnalyticsProcessorImpl) GetDashboardAnalytics(ctx context.Context, req *models.DashboardAnalyticsRequest) (*models.DashboardAnalyticsResponse, error) {
 	// Validate date range
 	if req.DateFrom.After(req.DateTo) {