using Microsoft.eShopWeb.ViewModels;
using Microsoft.AspNetCore.Mvc;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Identity;
using Microsoft.Extensions.Options;
using Infrastructure.Identity;

namespace Microsoft.eShopWeb.Controllers
{
    [Route("[controller]/[action]")]
    public class AccountController : Controller
    {
        private readonly UserManager<ApplicationUser> _userManager;
        private readonly SignInManager<ApplicationUser> _signInManager;
        private readonly string _externalCookieScheme;

        public AccountController(
            UserManager<ApplicationUser> userManager,
            SignInManager<ApplicationUser> signInManager,
            IOptions<IdentityCookieOptions> identityCookieOptions

)
        {
            _userManager = userManager;
            _signInManager = signInManager;
            _externalCookieScheme = identityCookieOptions.Value.ExternalCookieAuthenticationScheme;
        }

        // GET: /Account/SignIn
        [HttpGet]
        [AllowAnonymous]
        public async Task<IActionResult> SignIn(string returnUrl = null)
        {
            await HttpContext.Authentication.SignOutAsync(_externalCookieScheme);

            ViewData["ReturnUrl"] = returnUrl;
            return View();
        }

        // POST: /Account/SignIn
        [HttpPost]
        [AllowAnonymous]
        [ValidateAntiForgeryToken]
        public async Task<IActionResult> SignIn(LoginViewModel model, string returnUrl = null)
        {
            if (!ModelState.IsValid)
            {
                return View(model);
            }
            ViewData["ReturnUrl"] = returnUrl;

            var result = await _signInManager.PasswordSignInAsync(model.Email, model.Password, model.RememberMe, lockoutOnFailure: false);
            if (result.Succeeded)
            {
                return RedirectToLocal(returnUrl);
            }
            ModelState.AddModelError(string.Empty, "Invalid login attempt.");
            return View(model);
        }

        [HttpPost]
        [ValidateAntiForgeryToken]
        public async Task<ActionResult> SignOut()
        {
            HttpContext.Session.Clear();
            await _signInManager.SignOutAsync();

            return RedirectToAction(nameof(CatalogController.Index), "Catalog");
        }

        private IActionResult RedirectToLocal(string returnUrl)
        {
            if (Url.IsLocalUrl(returnUrl))
            {
                return Redirect(returnUrl);
            }
            else
            {
                return RedirectToAction(nameof(CatalogController.Index), "Catalog");
            }
        }
    }
}