Feat[BE]: implement FIFO stock management for marketing delivery products, including migration scripts and updates to related services and DTOs

internal/modules/closings/dto/closingMarketing.dto.go

@@ -64,7 +64,7 @@ func ToSalesDTO(e entity.MarketingDeliveryProduct) SalesDTO {
 		DoNumber:        doNumber,
 		Product:         product,
 		Customer:        customer,
-		Qty:             e.Qty,
+		Qty:             e.UsageQty, // Show allocated quantity from FIFO
 		Weight:          e.TotalWeight,
 		AvgWeight:       e.AvgWeight,
 		Price:           e.UnitPrice,

internal/modules/closings/services/closing.service.go

@@ -712,13 +712,13 @@ func (s closingService) calculateAverageSalesAge(ctx context.Context, projectFlo
 	)
 
 	for _, product := range deliveryProducts {
-		if product.Qty == 0 {
+		if product.UsageQty == 0 {
 			continue
 		}
 		projectFlockKandang := product.MarketingProduct.ProductWarehouse.ProjectFlockKandang
 		ageWeeks := dto.CalculateAgeFromChickinDataProduksi(projectFlockKandang, product.DeliveryDate)
-		totalAgeWeeks += float64(ageWeeks) * product.Qty
-		totalQty += product.Qty
+		totalAgeWeeks += float64(ageWeeks) * product.UsageQty
+		totalQty += product.UsageQty
 	}
 
 	if totalQty == 0 {