sdk：37ios支付及退款

shared/db/UserOrder.ts

@@ -68,6 +68,22 @@ export default class UserOrder extends BaseModel {
         return result;
     }
 
+    // 准备退款
+    public static async startRefund(roleId: string, localOrderID: string, message: string = '') {
+        let result: UserOrderModelType = await UserOrderModel.findOneAndUpdate({ roleId, localOrderID },
+            { $set: { state: ORDER_STATE.CHECK_TO_REFUND, message } },
+            { new: true }).lean(true);
+        return result;
+    }
+
+    // 退款
+    public static async refund(roleId: string, localOrderID: string, message: string = '') {
+        let result: UserOrderModelType = await UserOrderModel.findOneAndUpdate({ roleId, localOrderID },
+            { $set: { state: ORDER_STATE.REFUND, message } },
+            { new: true }).lean(true);
+        return result;
+    }
+
     //查询成功订单详情
     public static async findSuccessOrderByProductID(productID: string, roleId: string, activityId: number) {
         let result: UserOrderModelType[] = await UserOrderModel.find({ productID, roleId, activityId, state: ORDER_STATE.RESULT_SUCCESS }).lean(true);