using Fengling.AuthService.Data;
using Fengling.AuthService.Models;
using Fengling.AuthService.ViewModels;
using Microsoft.AspNetCore.Authentication;
using Microsoft.AspNetCore.Authentication.Cookies;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Mvc;

namespace Fengling.AuthService.Controllers;

[Route("account")]
public class AccountController : Controller
{
    private readonly UserManager<ApplicationUser> _userManager;
    private readonly SignInManager<ApplicationUser> _signInManager;
    private readonly ILogger<AccountController> _logger;

    public AccountController(
        UserManager<ApplicationUser> userManager,
        SignInManager<ApplicationUser> signInManager,
        ILogger<AccountController> logger)
    {
        _userManager = userManager;
        _signInManager = signInManager;
        _logger = logger;
    }

    [HttpGet("login")]
    public IActionResult Login(string returnUrl = "/")
    {
        return View(new LoginInputModel { ReturnUrl = returnUrl });
    }

    [HttpPost("login")]
    [ValidateAntiForgeryToken]
    public async Task<IActionResult> Login(LoginInputModel model)
    {
        if (!ModelState.IsValid)
        {
            return View(model);
        }

        var user = await _userManager.FindByNameAsync(model.Username);
        if (user == null || user.IsDeleted)
        {
            ModelState.AddModelError(string.Empty, "用户名或密码错误");
            return View(model);
        }

        var result = await _signInManager.PasswordSignInAsync(user, model.Password, model.RememberMe, false);
        if (!result.Succeeded)
        {
            if (result.IsLockedOut)
            {
                ModelState.AddModelError(string.Empty, "账号已被锁定");
            }
            else
            {
                ModelState.AddModelError(string.Empty, "用户名或密码错误");
            }
            return View(model);
        }

        return LocalRedirect(model.ReturnUrl);
    }

    [HttpGet("register")]
    public IActionResult Register(string returnUrl = "/")
    {
        return View(new RegisterViewModel { ReturnUrl = returnUrl });
    }

    [HttpPost("register")]
    [ValidateAntiForgeryToken]
    public async Task<IActionResult> Register(RegisterViewModel model)
    {
        if (!ModelState.IsValid)
        {
            return View(model);
        }

        var user = new ApplicationUser
        {
            UserName = model.Username,
            Email = model.Email,
            NormalizedUserName = model.Username.ToUpper(),
            NormalizedEmail = model.Email.ToUpper()
        };

        var result = await _userManager.CreateAsync(user, model.Password);
        if (!result.Succeeded)
        {
            foreach (var error in result.Errors)
            {
                ModelState.AddModelError(string.Empty, error.Description);
            }
            return View(model);
        }

        await _signInManager.SignInAsync(user, isPersistent: false);
        return LocalRedirect(model.ReturnUrl);
    }

    [HttpGet("profile")]
    [HttpGet("settings")]
    [HttpGet("logout")]
    public IActionResult NotImplemented()
    {
        return RedirectToAction("Index", "Dashboard");
    }

    [HttpPost("logout")]
    [ValidateAntiForgeryToken]
    public async Task<IActionResult> LogoutPost()
    {
        await _signInManager.SignOutAsync();
        return Redirect("/");
    }
}