using System.IdentityModel.Tokens.Jwt;
using System.Security.Claims;
using System.Text;
using Mapster;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Options;
using Microsoft.IdentityModel.Tokens;
using NPin.Framework.Upms.Domain.Entities;
using NPin.Framework.Upms.Domain.Repositories;
using NPin.Framework.Upms.Domain.Shared.Consts;
using NPin.Framework.Upms.Domain.Shared.Dtos;
using NPin.Framework.Upms.Domain.Shared.Etos;
using NPin.Framework.Upms.Domain.Shared.Options;
using Volo.Abp.Domain.Services;
using Volo.Abp.EventBus.Local;
using Volo.Abp.Security.Claims;

namespace NPin.Framework.Upms.Domain.Managers;

public interface IAccountManager
{
    /// <summary>
    /// 创建 RefreshToken
    /// </summary>
    /// <param name="userId"></param>
    /// <returns></returns>
    string CreateRefreshToken(Guid userId);

    /// <summary>
    /// 获取 AccessToken
    /// </summary>
    /// <param name="userId"></param>
    /// <returns></returns>
    Task<string> CreateAccessTokenAsync(Guid userId);

    /// <summary>
    /// 重置密码
    /// </summary>
    /// <param name="userId"></param>
    /// <param name="password"></param>
    /// <returns></returns>
    Task<bool> RestPasswordAsync(Guid userId, string password);

    /// <summary>
    /// 修改密码
    /// </summary>
    /// <param name="userId"></param>
    /// <param name="newPassword"></param>
    /// <param name="oldPassword"></param>
    /// <returns></returns>
    Task UpdatePasswordAsync(Guid userId, string newPassword, string oldPassword);
}

public class AccountManager : DomainService, IAccountManager
{
    private readonly IUserRepository _repository;
    private readonly ILocalEventBus _localEventBus;
    private readonly JwtOptions _jwtOptions;
    private readonly RefreshJwtOptions _refreshJwtOptions;
    private readonly UserManager _userManager;
    private IHttpContextAccessor _httpContextAccessor;

    public AccountManager(
        IUserRepository repository,
        ILocalEventBus localEventBus,
        IOptions<JwtOptions> jwtOptions,
        IOptions<RefreshJwtOptions> refreshJwtOptions,
        UserManager userManager,
        IHttpContextAccessor httpContextAccessor)
    {
        _repository = repository;
        _localEventBus = localEventBus;
        _jwtOptions = jwtOptions.Value;
        _refreshJwtOptions = refreshJwtOptions.Value;
        _userManager = userManager;
        _httpContextAccessor = httpContextAccessor;
    }

    /// <summary>
    /// 根据用户Id获取AccessToken
    /// </summary>
    /// <param name="userId"></param>
    /// <returns></returns>
    public async Task<string> CreateAccessTokenAsync(Guid userId)
    {
        var userInfo = await _userManager.GetInfoByCacheAsync(userId);
        if (!userInfo.User.IsEnabled)
        {
            throw new UserFriendlyException("该用户已被禁用，请联系管理员进行恢复");
        }

        // http请求
        if (_httpContextAccessor.HttpContext is not null)
        {
            // TODO eto 与 entity 保证
            var loginLogEntity = LoginLogEntity.GetInfoByHttpContext(_httpContextAccessor.HttpContext);
            var loginEto = loginLogEntity.Adapt<LoginEventArgs>();
            loginEto.Username = userInfo.User.Username;
            loginEto.UserId = userInfo.User.Id;
            // 异步
            _ = _localEventBus.PublishAsync(loginEto);
        }

        return CreateAccessToken(UserInfoToClaims(userInfo));
    }

    private string CreateAccessToken(List<KeyValuePair<string, string>> kvs)
    {
        var key = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(_jwtOptions.SecurityKey));
        // RSA2
        var credentials = new SigningCredentials(key, SecurityAlgorithms.HmacSha256);
        var claims = kvs.Select(x => new Claim(x.Key, x.Value)).ToList();
        var token = new JwtSecurityToken(
            issuer: _jwtOptions.Issuer,
            audience: _jwtOptions.Audience,
            claims: claims,
            expires: DateTime.Now.AddMinutes(_jwtOptions.ExpiresMinuteTime),
            notBefore: DateTime.Now,
            signingCredentials: credentials);
        return new JwtSecurityTokenHandler().WriteToken(token);
    }

    public string CreateRefreshToken(Guid userId)
    {
        throw new NotImplementedException();
    }

    private List<KeyValuePair<string, string>> UserInfoToClaims(UserFullDto dto)
    {
        var claims = new List<KeyValuePair<string, string>>();

        AddToClaim(claims, AbpClaimTypes.UserId, dto.User.Id.ToString());
        AddToClaim(claims, AbpClaimTypes.UserName, dto.User.Username);

        // TODO 各种 Claim

        // 超级管理员
        if (UserConst.Admin.Equals(dto.User.Username))
        {
            AddToClaim(claims, TokenTypeConst.Permission, UserConst.AdminPermissionCode);
            AddToClaim(claims, TokenTypeConst.Roles, UserConst.AdminRoleCode);
        }
        else
        {
        }

        return claims;
    }

    private void AddToClaim(List<KeyValuePair<string, string>> claims, string key, string value)
    {
        claims.Add(new KeyValuePair<string, string>(key, value));
    }

    /// <summary>
    /// 重置密码（仅执行最终重置，无前序判断）
    /// </summary>
    /// <param name="userId"></param>
    /// <param name="password"></param>
    /// <returns></returns>
    public async Task<bool> RestPasswordAsync(Guid userId, string password)
    {
        var user = await _repository.GetByIdAsync(userId);
        user.EncryptPassword.Password = password;
        user.BuildPassword();
        return await _repository.UpdateAsync(user);
    }

    public Task UpdatePasswordAsync(Guid userId, string newPassword, string oldPassword)
    {
        throw new NotImplementedException();
    }
}