[FEAT] Update StockTransferDelivery and TransferDeliveryDTO to allow optional SupplierId

internal/entities/stock_transfer_delivery.go

@@ -6,7 +6,7 @@ import "time"
 type StockTransferDelivery struct {
 	Id                uint64 `gorm:"primaryKey;autoIncrement"`
 	StockTransferId   uint64
-	SupplierId        uint64
+	SupplierId        *uint64
 	VehiclePlate      string
 	DriverName        string
 	DocumentNumber    string

internal/modules/inventory/transfers/dto/transfer.dto.go

@@ -60,7 +60,7 @@ type TransferDetailItemDTO struct {
 
 type TransferDeliveryDTO struct {
 	Id                uint64                    `json:"id"`
-	Supplier          SupplierSimpleDTO         `json:"supplier"`
+	Supplier          *SupplierSimpleDTO        `json:"supplier,omitempty"`
 	VehiclePlate      string                    `json:"vehicle_plate"`
 	DriverName        string                    `json:"driver_name"`
 	DocumentNumber    string                    `json:"document_number"`
@@ -115,7 +115,6 @@ func ToTransferListDTO(e entity.StockTransfer) TransferListDTO {
 			Quantity: d.UsageQty + d.PendingQty, // Total actual quantity allocated
 		}
 
-		
 		if d.ExpenseNonstock != nil {
 			priceCopy := d.ExpenseNonstock.Price
 			detailDTO.TransportPerItem = &priceCopy
@@ -155,12 +154,17 @@ func ToTransferListDTO(e entity.StockTransfer) TransferListDTO {
 			}
 		}
 
-		deliveries = append(deliveries, TransferDeliveryDTO{
+		var supplier *SupplierSimpleDTO
-			Id: del.Id,
+		if del.Supplier != nil {
-			Supplier: SupplierSimpleDTO{
+			supplier = &SupplierSimpleDTO{
 				Id:   del.Supplier.Id,
 				Name: del.Supplier.Name,
-			},
+			}
+		}
+
+		deliveries = append(deliveries, TransferDeliveryDTO{
+			Id:                del.Id,
+			Supplier:          supplier,
 			VehiclePlate:      del.VehiclePlate,
 			DriverName:        del.DriverName,
 			DocumentNumber:    del.DocumentNumber,
@@ -201,7 +205,6 @@ func ToTransferDetailDTO(e entity.StockTransfer) TransferDetailDTO {
 			Quantity: d.UsageQty + d.PendingQty, // Total actual quantity allocated
 		}
 
-		
 		if d.ExpenseNonstock != nil {
 			priceCopy := d.ExpenseNonstock.Price
 			detailDTO.TransportPerItem = &priceCopy
@@ -241,12 +244,17 @@ func ToTransferDetailDTO(e entity.StockTransfer) TransferDetailDTO {
 			}
 		}
 
-		deliveries = append(deliveries, TransferDeliveryDTO{
+		var supplier *SupplierSimpleDTO
-			Id: del.Id,
+		if del.Supplier != nil {
-			Supplier: SupplierSimpleDTO{
+			supplier = &SupplierSimpleDTO{
 				Id:   del.Supplier.Id,
 				Name: del.Supplier.Name,
-			},
+			}
+		}
+
+		deliveries = append(deliveries, TransferDeliveryDTO{
+			Id:                del.Id,
+			Supplier:          supplier,
 			VehiclePlate:      del.VehiclePlate,
 			DriverName:        del.DriverName,
 			DocumentNumber:    del.DocumentNumber,

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

@@ -196,6 +196,11 @@ func (s *transferService) CreateOne(c *fiber.Ctx, req *validation.TransferReques
 	}
 
 	for _, delivery := range req.Deliveries {
+		// Skip supplier validation if SupplierID is 0 (optional)
+		if delivery.SupplierID == 0 {
+			continue
+		}
+
 		supplier, err := s.SupplierRepo.GetByID(c.Context(), uint(delivery.SupplierID), nil)
 		if err != nil {
 			if errors.Is(err, gorm.ErrRecordNotFound) {
@@ -310,9 +315,16 @@ func (s *transferService) CreateOne(c *fiber.Ctx, req *validation.TransferReques
 
 		var deliveries []*entity.StockTransferDelivery
 		for _, delivery := range req.Deliveries {
+			supplierId := func() *uint64 {
+				if delivery.SupplierID > 0 {
+					id := uint64(delivery.SupplierID)
+					return &id
+				}
+				return nil
+			}()
 			deliveries = append(deliveries, &entity.StockTransferDelivery{
 				StockTransferId:   entityTransfer.Id,
-				SupplierId:        uint64(delivery.SupplierID),
+				SupplierId:        supplierId,
 				VehiclePlate:      delivery.VehiclePlate,
 				DriverName:        delivery.DriverName,
 				ShippingCostItem:  delivery.DeliveryCostPerItem,
@@ -458,6 +470,11 @@ func (s *transferService) CreateOne(c *fiber.Ctx, req *validation.TransferReques
 
 		if len(req.Deliveries) > 0 {
 			for _, delivery := range req.Deliveries {
+				// Skip adding to expensePayloads if SupplierID is 0 (optional)
+				if delivery.SupplierID == 0 {
+					continue
+				}
+
 				for _, prod := range delivery.Products {
 					detail := detailMap[uint64(prod.ProductID)]
 					if detail == nil {

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

@@ -26,7 +26,7 @@ type TransferDelivery struct {
 	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"`
+	SupplierID          uint                      `json:"supplier_id" `
 	Products            []TransferDeliveryProduct `json:"products" validate:"required,dive"`
 }