using HZQR.Common;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace EShang.Common
{
    public class MiniProgram
    {
        /// <summary>
        /// session_key和openId不应该传输到客户端 ,加密处理
        /// </summary>
        /// <param name="session_key">session_key是微信服务器生成的针对用户数据加密的秘钥</param>
        /// <param name="openid"></param>
        /// <returns>返回加密串</returns>
        public static string CreateMiniProToken(string session_key, string openid)
        {
            var jo = new JObject();
            jo["session_key"] = session_key;
            jo["openid"] = openid;
            jo["datetime"] = DateTime.Now;
            return jo.ToEncrypt();
        }

        /// <summary>
        /// 验证加密串中的session_key是否过期
        /// </summary>
        /// <param name="wechatMiniproToken">第一次登录生成的加密串</param>
        /// <returns></returns>
        public static Result CheckSessionKey(string wechatMiniproToken)
        {
            Result result = new Result();
            JObject tokenObj = (JObject)JsonConvert.DeserializeObject(wechatMiniproToken.ToDecrypt());
            DateTime startTime = Convert.ToDateTime(tokenObj["datetime"]);//生成加密串的时间
            DateTime endTime = DateTime.Now;//当前时间
            TimeSpan ts = endTime - startTime;
            int validSecond = 2 * 60 * 60;//设置2小时过期
            if (ts.TotalSeconds >= validSecond)
            {
                result.Result_Code = 200;
                result.Result_Desc = "session已过期";
                return result;
            }
            return result;
        }

        public static bool CheckSession(DateTime sessionAddTime)
        {
            bool isValid = true;//是否有效
            DateTime startTime = sessionAddTime;
            DateTime endTime = DateTime.Now;
            TimeSpan ts = endTime - startTime;
            int validSecond = 2 * 60 * 60;//设置2小时过期
            //int validSecond = 5 * 60;
            if (ts.TotalSeconds >= validSecond)
            {
                isValid = false;
                LogUtil.WriteLog(null, "CheckSession,session已过期", DateTime.Now.ToString("yyyyMMdd_") + "WeChatLog");
                return isValid;
            }
            return isValid;
        }
    }
}