init adjustment recording

internal/modules/production/transfer_layings/services/transfer_laying.service.go

@@ -231,6 +231,9 @@ func (s *transferLayingService) CreateOne(c *fiber.Ctx, req *validation.Create)
 	); err != nil {
 		return nil, err
 	}
+	if err := s.validateTargetSourceLineage(c.Context(), sourceDetail.ProjectFlockKandangId, targetKandangIDs, 0); err != nil {
+		return nil, err
+	}
 
 	transferDate, err := utils.ParseDateString(req.TransferDate)
 	if err != nil {
@@ -451,6 +454,9 @@ func (s *transferLayingService) UpdateOne(c *fiber.Ctx, req *validation.Update,
 	); err != nil {
 		return nil, err
 	}
+	if err := s.validateTargetSourceLineage(c.Context(), sourceDetail.ProjectFlockKandangId, targetKandangIDs, id); err != nil {
+		return nil, err
+	}
 
 	transferDate, err := time.Parse("2006-01-02", req.TransferDate)
 	if err != nil {
@@ -1611,6 +1617,80 @@ func (s *transferLayingService) validateKandangOwnership(
 	return nil
 }
 
+func (s *transferLayingService) validateTargetSourceLineage(
+	ctx context.Context,
+	sourceProjectFlockKandangID uint,
+	targetKandangIDs []uint,
+	excludeTransferID uint,
+) error {
+	if sourceProjectFlockKandangID == 0 || len(targetKandangIDs) == 0 {
+		return nil
+	}
+
+	seen := make(map[uint]struct{}, len(targetKandangIDs))
+	for _, targetKandangID := range targetKandangIDs {
+		if targetKandangID == 0 {
+			continue
+		}
+		if _, exists := seen[targetKandangID]; exists {
+			continue
+		}
+		seen[targetKandangID] = struct{}{}
+
+		existingTransfer, err := s.Repository.GetLatestApprovedByTargetKandang(ctx, targetKandangID)
+		if err != nil {
+			if errors.Is(err, gorm.ErrRecordNotFound) {
+				continue
+			}
+			s.Log.Errorf("Failed to validate transfer lineage for target kandang %d: %+v", targetKandangID, err)
+			return fiber.NewError(fiber.StatusInternalServerError, "Gagal memvalidasi relasi sumber transfer ke laying")
+		}
+		if existingTransfer == nil {
+			continue
+		}
+		if excludeTransferID != 0 && existingTransfer.Id == excludeTransferID {
+			continue
+		}
+
+		existingSourceID := uint(0)
+		if existingTransfer.SourceProjectFlockKandangId != nil && *existingTransfer.SourceProjectFlockKandangId != 0 {
+			existingSourceID = *existingTransfer.SourceProjectFlockKandangId
+		}
+		if existingSourceID == 0 && s.LayingTransferSourceRepo != nil {
+			sources, sourceErr := s.LayingTransferSourceRepo.GetByLayingTransferId(ctx, existingTransfer.Id)
+			if sourceErr != nil {
+				s.Log.Errorf("Failed to resolve transfer sources for lineage validation transfer=%d: %+v", existingTransfer.Id, sourceErr)
+				return fiber.NewError(fiber.StatusInternalServerError, "Gagal memvalidasi relasi sumber transfer ke laying")
+			}
+			for _, source := range sources {
+				if source.SourceProjectFlockKandangId != 0 {
+					existingSourceID = source.SourceProjectFlockKandangId
+					break
+				}
+			}
+		}
+		if existingSourceID == 0 {
+			continue
+		}
+		if existingSourceID == sourceProjectFlockKandangID {
+			continue
+		}
+
+		return fiber.NewError(
+			fiber.StatusBadRequest,
+			fmt.Sprintf(
+				"Kandang tujuan %d sudah memiliki lineage sumber kandang %d dari transfer %s. Tidak boleh ganti ke sumber kandang %d.",
+				targetKandangID,
+				existingSourceID,
+				existingTransfer.TransferNumber,
+				sourceProjectFlockKandangID,
+			),
+		)
+	}
+
+	return nil
+}
+
 func (s transferLayingService) GetMaxTargetQtyPerKandang(c *fiber.Ctx, projectFlockID uint) (map[uint]float64, error) {
 
 	if err := commonSvc.EnsureRelations(c.Context(),