feat: update app errors

backend/app/services/order.go

@@ -37,7 +37,7 @@ func (s *order) ListUserOrders(ctx context.Context, status string) ([]user_dto.O
 
 	list, err := q.Order(tbl.CreatedAt.Desc()).Find()
 	if err != nil {
-		return nil, errorx.ErrDatabaseError
+		return nil, errorx.ErrDatabaseError.WithCause(err)
 	}
 
 	var data []user_dto.Order
@@ -61,7 +61,7 @@ func (s *order) GetUserOrder(ctx context.Context, id string) (*user_dto.Order, e
 		if errors.Is(err, gorm.ErrRecordNotFound) {
 			return nil, errorx.ErrRecordNotFound
 		}
-		return nil, errorx.ErrDatabaseError
+		return nil, errorx.ErrDatabaseError.WithCause(err)
 	}
 
 	dto := s.toUserOrderDTO(item)
@@ -87,7 +87,7 @@ func (s *order) Create(ctx context.Context, form *transaction_dto.OrderCreateFor
 
 	price, err := models.ContentPriceQuery.WithContext(ctx).Where(models.ContentPriceQuery.ContentID.Eq(cid)).First()
 	if err != nil {
-		return nil, errorx.ErrDataCorrupted.WithMsg("价格信息缺失")
+		return nil, errorx.ErrDataCorrupted.WithCause(err).WithMsg("价格信息缺失")
 	}
 
 	// 2. Create Order (Status: Created)
@@ -96,16 +96,16 @@ func (s *order) Create(ctx context.Context, form *transaction_dto.OrderCreateFor
 		UserID:         uid,
 		Type:           consts.OrderTypeContentPurchase,
 		Status:         consts.OrderStatusCreated,
-		Currency:       price.Currency,
+		Currency:       consts.Currency(price.Currency), // price.Currency is consts.Currency in DB? Yes.
 		AmountOriginal: price.PriceAmount,
-		AmountDiscount: 0,                                       // Calculate discount if needed
-		AmountPaid:     price.PriceAmount,                       // Expected to pay
-		IdempotencyKey: uuid.NewString(),                        // Should be from client ideally
+		AmountDiscount: 0, // Calculate discount if needed
+		AmountPaid:     price.PriceAmount, // Expected to pay
+		IdempotencyKey: uuid.NewString(), // Should be from client ideally
 		Snapshot:       types.NewJSONType(fields.OrdersSnapshot{}), // Populate details
 	}
 
 	if err := models.OrderQuery.WithContext(ctx).Create(order); err != nil {
-		return nil, errorx.ErrDatabaseError
+		return nil, errorx.ErrDatabaseError.WithCause(err)
 	}
 
 	// 3. Create Order Item
@@ -118,7 +118,7 @@ func (s *order) Create(ctx context.Context, form *transaction_dto.OrderCreateFor
 		AmountPaid:    order.AmountPaid,
 	}
 	if err := models.OrderItemQuery.WithContext(ctx).Create(item); err != nil {
-		return nil, errorx.ErrDatabaseError
+		return nil, errorx.ErrDatabaseError.WithCause(err)
 	}
 
 	return &transaction_dto.OrderCreateResponse{
@@ -159,6 +159,7 @@ func (s *order) payWithBalance(ctx context.Context, o *models.Order) (*transacti
 		info, err := tx.User.WithContext(ctx).
 			Where(tx.User.ID.Eq(o.UserID), tx.User.Balance.Gte(o.AmountPaid)).
 			Update(tx.User.Balance, gorm.Expr("balance - ?", o.AmountPaid))
+		
 		if err != nil {
 			return err
 		}
@@ -196,7 +197,7 @@ func (s *order) payWithBalance(ctx context.Context, o *models.Order) (*transacti
 		if err != nil {
 			return err
 		}
-
+		
 		ledger := &models.TenantLedger{
 			TenantID:       o.TenantID,
 			UserID:         t.UserID, // Owner
@@ -217,8 +218,12 @@ func (s *order) payWithBalance(ctx context.Context, o *models.Order) (*transacti
 
 		return nil
 	})
+
 	if err != nil {
-		return nil, err
+		if _, ok := err.(*errorx.AppError); ok {
+			return nil, err
+		}
+		return nil, errorx.ErrDatabaseError.WithCause(err)
 	}
 
 	return &transaction_dto.OrderPayResponse{
@@ -238,4 +243,4 @@ func (s *order) toUserOrderDTO(o *models.Order) user_dto.Order {
 		Amount:     float64(o.AmountPaid) / 100.0,
 		CreateTime: o.CreatedAt.Format(time.RFC3339),
 	}
-}
+}