using AmtScanner.Api.Models;
using AmtScanner.Api.Services;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using System.Security.Claims;

namespace AmtScanner.Api.Controllers;

/// <summary>
/// 认证控制器
/// </summary>
[ApiController]
[Route("api/[controller]")]
public class AuthController : ControllerBase
{
    private readonly IAuthService _authService;

    public AuthController(IAuthService authService)
    {
        _authService = authService;
    }

    /// <summary>
    /// 用户登录
    /// </summary>
    [HttpPost("login")]
    public async Task<ActionResult<ApiResponse<LoginResponse>>> Login([FromBody] LoginRequest request)
    {
        if (string.IsNullOrEmpty(request.UserName) || string.IsNullOrEmpty(request.Password))
        {
            return Ok(ApiResponse<LoginResponse>.Fail(400, "用户名和密码不能为空"));
        }

        var (user, accessToken, refreshToken, error) = await _authService.LoginAsync(request.UserName, request.Password);

        if (error != null)
        {
            return Ok(ApiResponse<LoginResponse>.Fail(401, error));
        }

        var roles = await _authService.GetUserRolesAsync(user!.Id);

        return Ok(ApiResponse<LoginResponse>.Success(new LoginResponse
        {
            Token = accessToken!,
            RefreshToken = refreshToken!,
            UserInfo = new UserInfoDto
            {
                UserId = user.Id,
                UserName = user.UserName,
                NickName = user.NickName ?? user.UserName,
                Avatar = user.Avatar,
                Email = user.Email,
                Phone = user.Phone,
                Gender = user.Gender,
                Roles = roles
            }
        }, "登录成功"));
    }

    /// <summary>
    /// 刷新 Token
    /// </summary>
    [HttpPost("refresh")]
    public async Task<ActionResult<ApiResponse<RefreshTokenResponse>>> RefreshToken([FromBody] RefreshTokenRequest request)
    {
        if (string.IsNullOrEmpty(request.AccessToken) || string.IsNullOrEmpty(request.RefreshToken))
        {
            return Ok(ApiResponse<RefreshTokenResponse>.Fail(400, "Token 不能为空"));
        }

        var (accessToken, refreshToken, error) = await _authService.RefreshTokenAsync(request.AccessToken, request.RefreshToken);

        if (error != null)
        {
            return Ok(ApiResponse<RefreshTokenResponse>.Fail(401, error));
        }

        return Ok(ApiResponse<RefreshTokenResponse>.Success(new RefreshTokenResponse
        {
            Token = accessToken!,
            RefreshToken = refreshToken!
        }, "刷新成功"));
    }

    /// <summary>
    /// 退出登录
    /// </summary>
    [Authorize]
    [HttpPost("logout")]
    public async Task<ActionResult<ApiResponse<object>>> Logout()
    {
        var userIdClaim = User.FindFirst("userId")?.Value;
        if (string.IsNullOrEmpty(userIdClaim) || !int.TryParse(userIdClaim, out var userId))
        {
            return Ok(ApiResponse<object>.Fail(401, "无效的用户"));
        }

        await _authService.LogoutAsync(userId);
        return Ok(ApiResponse<object>.Success(null, "退出成功"));
    }
}

#region DTOs

/// <summary>
/// 登录请求
/// </summary>
public class LoginRequest
{
    public string UserName { get; set; } = string.Empty;
    public string Password { get; set; } = string.Empty;
}

/// <summary>
/// 登录响应
/// </summary>
public class LoginResponse
{
    public string Token { get; set; } = string.Empty;
    public string RefreshToken { get; set; } = string.Empty;
    public UserInfoDto UserInfo { get; set; } = new();
}

/// <summary>
/// 用户信息 DTO
/// </summary>
public class UserInfoDto
{
    public int UserId { get; set; }
    public string UserName { get; set; } = string.Empty;
    public string NickName { get; set; } = string.Empty;
    public string? Avatar { get; set; }
    public string? Email { get; set; }
    public string? Phone { get; set; }
    public string Gender { get; set; } = "0";
    public List<string> Roles { get; set; } = new();
}

/// <summary>
/// 刷新 Token 请求
/// </summary>
public class RefreshTokenRequest
{
    public string AccessToken { get; set; } = string.Empty;
    public string RefreshToken { get; set; } = string.Empty;
}

/// <summary>
/// 刷新 Token 响应
/// </summary>
public class RefreshTokenResponse
{
    public string Token { get; set; } = string.Empty;
    public string RefreshToken { get; set; } = string.Empty;
}

#endregion