using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Newtonsoft.Json;
using Jose;
using Common;

namespace CommonEntity
{
    public class JWTData
    {
        /// <summary>
        /// 主题 
        /// </summary>
        public string sub { get; set; }
        /// <summary>
        /// 发行人
        /// </summary>
        public string iss { get; set; }
        /// <summary>
        /// 到期时间
        /// </summary>
        public long exp { get; set; }
        /// <summary>
        /// 用户
        /// </summary>
        public string aud { get; set; }

        /// <summary>
        /// 在此之前不可用
        /// </summary>
        public string nbf { get; set; }

        /// <summary>
        /// 发布时间
        /// </summary>
        public string iat { get; set; }

        /// <summary>
        ///用于标识该JWT 
        /// </summary>
        public string jti { get; set; }

        public string username { get; set; }
    }
    public class ChuangWeiUser
    {
        public string UserName { get; set; }
        public string Version { get; set; }
    }
    public class ReturnInfo
    {
        public int code { get; set; }
        public string msg { get; set; }
        public object data { get; set; }
    }
    public class TokenData
    {
        public string accessToken { get; set; }
        public string refreshToken { get; set; }
    }

    public class SignKeyCommon
    {
        public readonly static string ChuangWei_JWTKey = "#这x是98一个uv永远$不可0能到的a一个数据*";

        public static ReturnInfo GetTokenData(string username)
        {
            DateTime dt = DateTime.Now.AddMonths(6);
            string ti = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff");
            long l = Tools.GetCurrentTimeStamp(dt);
            CommonEntity.JWTData j = new CommonEntity.JWTData();
            j.sub = "创维电视登录";
            j.exp = l;
            j.aud = "创维电视accesstoken";
            j.nbf = DateTime.Now.AddMinutes(3).ToString("yyyy-MM-dd HH:mm:ss.fff");
            j.iat = ti;
            j.jti = Guid.NewGuid().ToString("N");
            j.username = username;

            var secretKey = Encoding.UTF8.GetBytes(SignKeyCommon.ChuangWei_JWTKey);
            string token = Jose.JWT.Encode(j, secretKey, JwsAlgorithm.HS256);

            j.aud = "创维电视refresh_token";
            j.jti = Guid.NewGuid().ToString("N");
            string refresh_token = Jose.JWT.Encode(j, secretKey, JwsAlgorithm.HS256);

            ReturnInfo r = new ReturnInfo();
            r.code = 200;
            r.msg = "登录成功";
            r.data = new TokenData()
            {
                accessToken = token,
                refreshToken = refresh_token
            };
            return r;
        }

        public static bool TokenValidate(string retoken, out JWTData data, out int code, out string msg)
        {
            data = new JWTData();
            bool isv = false;
            code = 200;
            msg = "sucess";

            byte[] secretKey = Encoding.UTF8.GetBytes(SignKeyCommon.ChuangWei_JWTKey);
            JWTData MMU = Jose.JWT.Decode<JWTData>(retoken, secretKey, JwsAlgorithm.HS256);
            if (MMU != null)
            {
                DateTime dt = Tools.GetCurrentDateTime(MMU.exp);
                string username = MMU.username;
                if (dt > DateTime.Now)
                {
                    isv = true;
                    data = MMU;
                }
                else
                {
                    isv = false;
                    code = 10042;
                    msg = "Token值已经过期";
                }
            }
            else
            {
                isv = false;
                code = 10021;
                msg = "非法token";
            }

            return isv;
        }
    }
}