using Binance.TradeRobot.Common.DI;
using Binance.TradeRobot.Common.Extensions;
using Binance.TradeRobot.Model.Base;
using Binance.TradeRobot.Model.Db;
using Binance.TradeRobot.Model.Dto;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.IdentityModel.Tokens;
using System;
using System.Collections.Generic;
using System.IdentityModel.Tokens.Jwt;
using System.Security.Claims;
using System.Text;

namespace Binance.TradeRobot.Business
{
    [BatchRegistration(ServiceLifetime.Singleton, RegistrationType.Self)]
    public class UserBusiness : BaseBusiness
    {
        private IConfiguration configuration;

        public UserBusiness(IFreeSql fsql, NLogManager logManager, IConfiguration configuration) : base(fsql, logManager)
        {
            this.configuration = configuration;
        }

        public LoginResponse Login(LoginRequest loginRequest)
        {
            var pwd = loginRequest.Pwd.ToMD5();
            var user = fsql.Select<User>().Where(u => u.UserName == loginRequest.UserName && u.Pwd == pwd).ToOne();
            if (user == null)
                throw new BusinessException("用户名或密码错误");

            #region 签发token
            var claims = new List<Claim>()
            {
                new Claim("Id",user.Id.ToString()),
                new Claim("UserName",user.UserName),
            };

            var jwtSecret = configuration.GetSection("JwtConfig:Secret").Value;
            var jwtIssuer = configuration.GetSection("JwtConfig:Issuer").Value;
            var jwtAudience = configuration.GetSection("JwtConfig:Audience").Value;
            var key = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(jwtSecret));
            var credentials = new SigningCredentials(key, SecurityAlgorithms.HmacSha256);
            var jwtToken = new JwtSecurityToken(jwtIssuer, jwtAudience, claims, expires: DateTime.Now.AddDays(30), signingCredentials: credentials);
            var token = new JwtSecurityTokenHandler().WriteToken(jwtToken);
            #endregion
            return new LoginResponse()
            {
                Id = user.Id,
                UserName = user.UserName,
                Token = token
            };
        }
    }
}