using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Text;
using System.Web;
using System.Web.Http.Controllers;
using System.Web.Http.Filters;
using VueWebApi.Models;

namespace VueWebApi.Tools
{
    /// <summary>
    /// 渠道过滤器
    /// </summary>
    [AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = false)]
    public class ChannelActionFilterAttribute : ActionFilterAttribute
    {
        ToMessage mes = new ToMessage();
        RedisHelper redis = new RedisHelper();
        /// <summary>
        /// 请求接口之前渠道过滤
        /// </summary>
        /// <param name="actionContext"></param>
        public override void  OnActionExecuting(HttpActionContext actionContext)
        {
            User loginUser = JsonConvert.DeserializeObject<User>(HttpContext.Current.Session["User"].ToString());
            base.OnActionExecuting(actionContext);
            //如果存在
            if (redis.Get<User>("LoginUserID" + loginUser.userid, 0).userid.ToString() != "")
            {
                //获取redis中当前用户信息
                User r_loginUser = redis.Get<User>("LoginUserID" + loginUser.userid, 0);
                //如果session中的用户guid和redis中的用户guid匹配
                if (r_loginUser.guid.Equals(loginUser.guid))
                {
                    //重置过期时间
                    redis.Set<User>("LoginUserID" + loginUser.userid, loginUser, redis.secondsTimeOut, 0);
                }
                else
                {
                    mes.code = "300";
                    mes.Message = "账户已过期,请重新登录2!";
                    actionContext.Response = new HttpResponseMessage { StatusCode = HttpStatusCode.Ambiguous, Content = new StringContent(JsonConvert.SerializeObject(mes), Encoding.GetEncoding("UTF-8"), "application/json") };
                }
            }
            else //如果redis登录用户中不存在当前用户
            {
                mes.code = "300";
                mes.Message = "账户已过期,请重新登录1!";
                actionContext.Response = new HttpResponseMessage { StatusCode = HttpStatusCode.Ambiguous, Content = new StringContent(JsonConvert.SerializeObject(mes), Encoding.GetEncoding("UTF-8"), "application/json") };
            }
        }  
    }
}