feat(BE): add file size validation and improve document indexing for transfer creation

internal/modules/inventory/transfers/controllers/transfer.controller.go

@@ -75,6 +75,8 @@ func (u *TransferController) GetOne(c *fiber.Ctx) error {
 func (u *TransferController) CreateOne(c *fiber.Ctx) error {
 	data := c.FormValue("data")
 
+	const maxFileSize = 5 * 1024 * 1024
+
 	var req validation.TransferRequest
 	if err := json.Unmarshal([]byte(data), &req); err != nil {
 		return fiber.NewError(fiber.StatusBadRequest, "Invalid request body")
@@ -87,9 +89,11 @@ func (u *TransferController) CreateOne(c *fiber.Ctx) error {
 
 	files := form.File["documents"]
 
-	if len(files) != len(req.Deliveries) {
+	for i, file := range files {
-		return fiber.NewError(fiber.StatusBadRequest,
+		if file.Size > maxFileSize {
-			fiber.NewError(fiber.StatusBadRequest, "Jumlah dokumen harus sama dengan jumlah deliveries").Message)
+			return fiber.NewError(fiber.StatusBadRequest,
+				"Dokumen ke-"+strconv.Itoa(i+1)+" melebihi ukuran maksimal 5MB")
+		}
 	}
 
 	result, err := u.TransferService.CreateOne(c, &req, files)

internal/modules/inventory/transfers/services/transfer.service.go

@@ -128,7 +128,6 @@ func (s transferService) GetOne(c *fiber.Ctx, id uint) (*entity.StockTransfer, e
 
 func (s *transferService) CreateOne(c *fiber.Ctx, req *validation.TransferRequest, files []*multipart.FileHeader) (*entity.StockTransfer, error) {
 
-	// === VALIDASI SOURCE WAREHOUSE ===
 	pwIDs := make([]uint, 0, len(req.Products))
 
 	for _, product := range req.Products {
@@ -201,7 +200,6 @@ func (s *transferService) CreateOne(c *fiber.Ctx, req *validation.TransferReques
 			return nil, fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Supplier dengan ID %d bukan kategori BOP", delivery.SupplierID))
 		}
 	}
-
 	seqNum, err := s.StockTransferRepo.GetNextMovementNumber(c.Context())
 	if err != nil {
 		return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to generate movement number")
@@ -226,12 +224,11 @@ func (s *transferService) CreateOne(c *fiber.Ctx, req *validation.TransferReques
 			return err
 		}
 
-		// Prepare details and fetch product warehouses
 		details := make([]*entity.StockTransferDetail, 0, len(req.Products))
 		detailMap := make(map[uint64]*entity.StockTransferDetail)
 
 		for _, product := range req.Products {
-			// Get source product warehouse
+
 			sourcePW, err := s.ProductWarehouseRepo.GetProductWarehouseByProductAndWarehouseID(
 				c.Context(), uint(product.ProductID), uint(req.SourceWarehouseID),
 			)
@@ -242,7 +239,6 @@ func (s *transferService) CreateOne(c *fiber.Ctx, req *validation.TransferReques
 				return fiber.NewError(fiber.StatusInternalServerError, "Gagal mengambil data product warehouse source")
 			}
 
-			// Get or create destination product warehouse
 			destPW, err := s.ProductWarehouseRepo.GetProductWarehouseByProductAndWarehouseID(
 				c.Context(), uint(product.ProductID), uint(req.DestinationWarehouseID),
 			)
@@ -323,24 +319,38 @@ func (s *transferService) CreateOne(c *fiber.Ctx, req *validation.TransferReques
 
 		if s.DocumentSvc != nil && len(files) > 0 {
 
-			for idx, file := range files {
+			for deliveryIdx, delivery := range deliveries {
+				reqDelivery := req.Deliveries[deliveryIdx]
+
+				if reqDelivery.DocumentIndex < 0 {
+					continue
+				}
+
+				if reqDelivery.DocumentIndex >= len(files) {
+					return fiber.NewError(fiber.StatusBadRequest,
+						fmt.Sprintf("DocumentIndex %d untuk delivery %d melebihi jumlah file yang diupload (%d)",
+							reqDelivery.DocumentIndex, deliveryIdx+1, len(files)))
+				}
+
+				file := files[reqDelivery.DocumentIndex]
+
 				documentFiles := []commonSvc.DocumentFile{
 					{
 						File:  file,
 						Type:  string(utils.DocumentTypeTransfer),
-						Index: &idx,
+						Index: &reqDelivery.DocumentIndex,
 					},
 				}
 				_, err := s.DocumentSvc.UploadDocuments(c.Context(), commonSvc.DocumentUploadRequest{
 					DocumentableType: string(utils.DocumentableTypeTransfer),
-					DocumentableID:   deliveries[idx].Id,
+					DocumentableID:   delivery.Id,
 					CreatedBy:        &actorID,
 					Files:            documentFiles,
 				})
 				if err != nil {
 					s.Log.WithError(err).Errorf("Failed to upload document for delivery %d (delivery_id: %d, filename: %s)",
-						idx+1, deliveries[idx].Id, file.Filename)
+						deliveryIdx+1, delivery.Id, file.Filename)
-					return fiber.NewError(fiber.StatusInternalServerError, fmt.Sprintf("Failed to upload document for delivery %d: %v", idx+1, err))
+					return fiber.NewError(fiber.StatusInternalServerError, fmt.Sprintf("Failed to upload document for delivery %d: %v", deliveryIdx+1, err))
 				}
 			}
 		}

internal/modules/inventory/transfers/validations/transfer.validation.go

@@ -23,7 +23,7 @@ type TransferDeliveryProduct struct {
 type TransferDelivery struct {
 	DeliveryCost        float64                   `json:"delivery_cost" validate:"required"`
 	DeliveryCostPerItem float64                   `json:"delivery_cost_per_item" validate:"required"`
-	DocumentIndex       int                       `json:"document_index" validate:"min=0"`
+	DocumentIndex       int                       `json:"document_index" validate:"omitempty,min=-1" default:"-1"`
 	DriverName          string                    `json:"driver_name" validate:"required"`
 	VehiclePlate        string                    `json:"vehicle_plate" validate:"required"`
 	SupplierID          uint                      `json:"supplier_id" validate:"required"`