//
        // GET: /Account/WeChatAuth

        public ActionResult WeChatAuth(string code, string state, string returnUrl)
        {
            if (!string.IsNullOrEmpty(code) &&
                !string.IsNullOrEmpty(state) && state.Equals("ShsictReservation"))
            {
                // 获取微信授权access_token
                var client = new WeChatAuthClient();
                var result = client.GetUserInfo(code);

                if (!string.IsNullOrEmpty(result))
                {
                    var json = JToken.Parse(result);

                    if (json["UserId"] != null && json["DeviceId"] != null)
                    {
                        // 企业成员授权时返回 {"UserId":"cyrano","DeviceId":"3cc38f93c7d87eec0103c06feca4779f"}
                        var userid   = json["UserId"].Value <string>();
                        var deviceId = json["DeviceId"].Value <string>();

                        // 授权当前企业号成员
                        var auth = new AuthorizeManager();

                        if (auth.AuthorizeUser(userid, deviceId))
                        {
                            // 设置Cookie
                            FormsAuthentication.SetAuthCookie(userid, true);

                            // 跳转安全检查页面
                            if (returnUrl.ToLower().Contains("securenode"))
                            {
                                if (Url.IsLocalUrl(returnUrl))
                                {
                                    return(Redirect(returnUrl));
                                }
                            }

                            // 授权成功跳转订餐界面
                            return(RedirectToAction("Index", "Reservation"));
                        }
                    }
                    else if (json["OpenId"] != null && json["DeviceId"] != null)
                    {
                        // 非企业成员授权时返回
                        var openId   = json["OpenId"].Value <string>();
                        var deviceId = json["DeviceId"].Value <string>();

                        // 授权非企业号成员的关注者
                        var auth = new AuthorizeManager();

                        if (auth.AuthorizeGuest(openId, deviceId))
                        {
                            // 设置Cookie
                            FormsAuthentication.SetAuthCookie(openId, true);

                            // 授权成功跳转用户信息页(补充订餐必要信息)
                            return(RedirectToAction("Index", "Account"));
                        }
                    }

                    // 其他情况下均跳转登录界面
                }
            }

            // 授权失败跳转登录界面
            return(RedirectToAction("Login", "Account", new { weChatRedirect = false }));
        }