[FEAT/BE] fix response closing and fix status rejected filter

internal/modules/marketing/services/salesorder.service.go

@@ -152,6 +152,31 @@ func (s *salesOrdersService) CreateOne(c *fiber.Ctx, req *validation.Create) (*e
 		}
 	}
 
+	requestedByWarehouse := make(map[uint]float64)
+	for _, item := range req.MarketingProducts {
+		if item.ProductWarehouseId == 0 {
+			continue
+		}
+		requestedByWarehouse[item.ProductWarehouseId] += item.Qty
+	}
+
+	for pwID, requestedQty := range requestedByWarehouse {
+		productWarehouse, err := s.ProductWarehouseRepo.GetDetailByID(c.Context(), pwID)
+		if err != nil {
+			if errors.Is(err, gorm.ErrRecordNotFound) {
+				return nil, fiber.NewError(fiber.StatusNotFound, fmt.Sprintf("Product warehouse %d not found", pwID))
+			}
+			return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to check stock availability")
+		}
+		availableQty := productWarehouse.Quantity
+		if availableQty+1e-6 < requestedQty {
+			return nil, fiber.NewError(
+				fiber.StatusBadRequest,
+				fmt.Sprintf("Stok tidak mencukupi untuk gudang %d: diminta %.3f, tersedia %.3f", pwID, requestedQty, availableQty),
+			)
+		}
+	}
+
 	soDate, err := utils.ParseDateString(req.Date)
 	if err != nil {
 		return nil, fiber.NewError(fiber.StatusBadRequest, "Invalid date format")