[FIX/BE-US] purchase edit qty approval staf add adjustment fifo system

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

@@ -844,6 +844,11 @@ func (s *purchaseService) ReceiveProducts(c *fiber.Ctx, id uint, req *validation
 			pwID   uint
 			qty    float64
 		}, 0, len(prepared))
+		fifoSubs := make([]struct {
+			itemID uint
+			pwID   uint
+			qty    float64
+		}, 0, len(prepared))
 
 		for _, prep := range prepared {
 			item := prep.item
@@ -877,9 +882,18 @@ func (s *purchaseService) ReceiveProducts(c *fiber.Ctx, id uint, req *validation
 					totalQtyDeltas[item.Id] += deltaQty
 				}
 			case deltaQty < 0 && newPWID != nil:
-				deltas[*newPWID] += deltaQty // negative
-				affected[*newPWID] = struct{}{}
-				totalQtyDeltas[item.Id] += deltaQty
+				if s.FifoSvc != nil {
+					fifoSubs = append(fifoSubs, struct {
+						itemID uint
+						pwID   uint
+						qty    float64
+					}{itemID: item.Id, pwID: *newPWID, qty: deltaQty})
+					affected[*newPWID] = struct{}{}
+				} else {
+					deltas[*newPWID] += deltaQty // negative
+					affected[*newPWID] = struct{}{}
+					totalQtyDeltas[item.Id] += deltaQty
+				}
 			}
 
 			dateCopy := prep.receivedDate
@@ -919,10 +933,6 @@ func (s *purchaseService) ReceiveProducts(c *fiber.Ctx, id uint, req *validation
 			return err
 		}
 
-		if err := pwRepoTx.CleanupEmpty(c.Context(), affected); err != nil {
-			return err
-		}
-
 		if len(priceUpdates) > 0 {
 			if err := repoTx.UpdatePricing(c.Context(), purchase.Id, priceUpdates); err != nil {
 				return err
@@ -967,6 +977,26 @@ func (s *purchaseService) ReceiveProducts(c *fiber.Ctx, id uint, req *validation
 					return err
 				}
 			}
+			for _, adj := range fifoSubs {
+				if adj.pwID == 0 || adj.qty >= 0 {
+					continue
+				}
+				if err := s.FifoSvc.AdjustStockableQuantity(c.Context(), commonSvc.StockAdjustRequest{
+					StockableKey:       fifo.StockableKeyPurchaseItems,
+					StockableID:        adj.itemID,
+					ProductWarehouseID: adj.pwID,
+					Quantity:           adj.qty,
+					Tx:                 tx,
+				}); err != nil {
+					return err
+				}
+			}
+		}
+
+		if len(affected) > 0 {
+			if err := pwRepoTx.CleanupEmpty(c.Context(), affected); err != nil {
+				return err
+			}
 		}
 
 		return nil