using HackerNet.Web.Models;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Mvc;

namespace HackerNet.Web.Controllers;

public class AccountController : HackerController
{
  private readonly UserManager<IdentityUser> _userManager;
  private readonly SignInManager<IdentityUser> _signInManager;

  public AccountController(UserManager<IdentityUser> userManager, SignInManager<IdentityUser> signInManager)
  {
    _userManager = userManager;
    _signInManager = signInManager;
  }

  [HttpGet]
  public IActionResult Signup()
  {
    return View(new SignupLoginViewModel());
  }

  [HttpPost]
  [ValidateAntiForgeryToken]
  public async Task<IActionResult> Signup(SignupLoginViewModel cmd)
  {
    if (!ModelState.IsValid)
    {
      return View(cmd);
    }

    var user = new IdentityUser(cmd.Username);
    var result = await _userManager.CreateAsync(user, cmd.Password);

    if (!result.Succeeded)
    {
      ModelState
        .AddModelError(nameof(SignupLoginViewModel.Username), "Impossible de créer le compte");
      return View(cmd);
    }

    SetFlashMessage("Votre compte a été créé !");

    return RedirectToAction("Index", "Links");
  }

  [HttpGet]
  public IActionResult Login()
  {
    return View(new SignupLoginViewModel());
  }

  [HttpPost]
  [ValidateAntiForgeryToken]
  public async Task<IActionResult> Login(SignupLoginViewModel cmd, string? redirectUrl = null)
  {
    if (!ModelState.IsValid)
    {
      return View(cmd);
    }

    var user = await _userManager.FindByNameAsync(cmd.Username);

    if (user == null)
    {
      ModelState
        .AddModelError(nameof(SignupLoginViewModel.Username), "Nom d'utilisateur ou mot de passe invalide");
      return View(cmd);
    }

    var result = await _signInManager.PasswordSignInAsync(user, cmd.Password, true, false);

    if (!result.Succeeded)
    {
      ModelState
        .AddModelError(nameof(SignupLoginViewModel.Username), "Nom d'utilisateur ou mot de passe invalide");
      return View(cmd);
    }

    SetFlashMessage("Vous êtes désormais connecté !");

    if (!string.IsNullOrWhiteSpace(redirectUrl))
    {
      return Redirect(redirectUrl);
    }

    return RedirectToAction("Index", "Links");
  }
}