x

internal/logic/public/order/purchaseLogic.go

@@ -111,6 +111,26 @@ func (l *PurchaseLogic) Purchase(req *types.PurchaseOrderRequest) (resp *types.P
 		}
 	}
 
+	// 单订阅模式下，若已有同套餐 pending 订单，直接返回，防止重复创建
+	if l.svcCtx.Config.Subscribe.SingleModel && orderType == 1 {
+		var existPending order.Order
+		if e := l.svcCtx.DB.WithContext(l.ctx).
+			Model(&order.Order{}).
+			Where("user_id = ? AND subscribe_id = ? AND status = 1", u.Id, targetSubscribeID).
+			Order("id DESC").
+			First(&existPending).Error; e == nil && existPending.Id > 0 {
+			l.Infow("[Purchase] single mode pending order exists, returning existing",
+				logger.Field("user_id", u.Id),
+				logger.Field("order_no", existPending.OrderNo),
+				logger.Field("subscribe_id", targetSubscribeID),
+			)
+			return &types.PurchaseOrderResponse{
+				OrderNo:         existPending.OrderNo,
+				AppAccountToken: existPending.AppAccountToken,
+			}, nil
+		}
+	}
+
 	// find subscribe plan
 	sub, err := l.svcCtx.SubscribeModel.FindOne(l.ctx, targetSubscribeID)