feat(BE): fix delete project flock budget and uniformity, and fix uniformity with update purchase document

internal/modules/purchases/controllers/purchase.controller.go

@@ -180,7 +180,10 @@ func (ctrl *PurchaseController) ReceiveProducts(c *fiber.Ctx) error {
 			req.Items = []validation.ReceivePurchaseItemRequest{singleItem}
 		}
 	}
-	req.TravelDocuments = form.File["documents"]
+	req.TravelDocuments = form.File["travel_documents"]
+	if len(req.TravelDocuments) == 0 {
+		req.TravelDocuments = form.File["documents"]
+	}
 	result, err := ctrl.service.ReceiveProducts(c, uint(id), req)
 	if err != nil {
 		return err

internal/modules/purchases/services/purchase.service.go

@@ -999,6 +999,22 @@ func (s *purchaseService) uploadTravelDocument(
 		return "", errors.New("document service not available")
 	}
 
+	documents, err := s.DocumentSvc.ListByTarget(ctx, string(utils.DocumentableTypePurchaseItem), uint64(itemID))
+	if err != nil {
+		return "", err
+	}
+	if len(documents) > 0 {
+		var ids []uint
+		for _, doc := range documents {
+			if doc.Type == string(utils.DocumentTypePurchaseTravel) {
+				ids = append(ids, doc.Id)
+			}
+		}
+		if err := s.DocumentSvc.DeleteDocuments(ctx, ids, true); err != nil {
+			return "", err
+		}
+	}
+
 	documentFiles := []commonSvc.DocumentFile{{
 		File: file,
 		Type: string(utils.DocumentTypePurchaseTravel),
@@ -1015,7 +1031,7 @@ func (s *purchaseService) uploadTravelDocument(
 	if len(results) == 0 {
 		return "", errors.New("upload result is empty")
 	}
-	return results[0].URL, nil
+	return results[0].Document.Path, nil
 }
 
 func (s *purchaseService) DeleteItems(c *fiber.Ctx, id uint, req *validation.DeletePurchaseItemsRequest) (*entity.Purchase, error) {
@@ -1499,10 +1515,56 @@ func (s *purchaseService) loadPurchase(
 	if err := s.attachLatestApproval(ctx, purchase); err != nil {
 		s.Log.Warnf("Unable to attach latest approval for purchase %d: %+v", id, err)
 	}
+	s.applyTravelDocumentURLs(ctx, purchase)
 
 	return purchase, nil
 }
 
+func (s *purchaseService) applyTravelDocumentURLs(ctx context.Context, purchase *entity.Purchase) {
+	if purchase == nil || s.DocumentSvc == nil {
+		return
+	}
+
+	for i := range purchase.Items {
+		item := &purchase.Items[i]
+		documents, err := s.DocumentSvc.ListByTarget(ctx, string(utils.DocumentableTypePurchaseItem), uint64(item.Id))
+		if err != nil {
+			s.Log.Warnf("Unable to load travel documents for purchase item %d: %+v", item.Id, err)
+		} else {
+			var targetDoc *entity.Document
+			for j := len(documents) - 1; j >= 0; j-- {
+				if documents[j].Type == string(utils.DocumentTypePurchaseTravel) {
+					targetDoc = &documents[j]
+					break
+				}
+			}
+			if targetDoc != nil {
+				url, err := s.DocumentSvc.PresignURL(ctx, *targetDoc, 15*time.Minute)
+				if err != nil {
+					s.Log.Warnf("Unable to presign travel document for purchase item %d: %+v", item.Id, err)
+				} else if url != "" {
+					item.TravelNumberDocs = &url
+					continue
+				}
+			}
+		}
+
+		path := item.TravelNumberDocs
+		if path == nil || strings.TrimSpace(*path) == "" {
+			continue
+		}
+		url, err := commonSvc.ResolveDocumentURL(ctx, s.DocumentSvc, *path, 15*time.Minute)
+		if err != nil {
+			s.Log.Warnf("Unable to presign travel document for purchase item %d: %+v", item.Id, err)
+			continue
+		}
+		if url == "" {
+			continue
+		}
+		item.TravelNumberDocs = &url
+	}
+}
+
 func collectPFKIDsFromPurchase(p *entity.Purchase) []uint {
 	seen := make(map[uint]struct{})
 	ids := make([]uint, 0)