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@model OdeToFood.ViewModels.LogInViewModel
@{ 
    ViewBag.Title = "Login";
}

<h2>Login</h2>

<form method="post" asp-controller="Account" asp-action="Login" asp-route-returnurl="@Model.ReturnUrl">
    <div asp-validation-summary="ModelOnly"></div>
    <div>
        <label asp-for="UserName"></label>
        <input asp-for="UserName" />
        <span asp-validation-for="UserName"></span>
    </div>
    <div>
        <label asp-for="Password"></label>
        <input asp-for="Password" />
        <span asp-validation-for="Password"></span>
    </div>
    <div>
        <label asp-for="RememberMe"></label>
        <input asp-for="RememberMe" />
        <span asp-validation-for="RememberMe"></span>
    </div>
    <input type="submit" value="Login" />
</form>

using System.ComponentModel.DataAnnotations;

namespace OdeToFood.ViewModels
{
    public class LogInViewModel
    {
        public string UserName { get; set; }

        [DataType(DataType.Password)]
        public string Password { get; set; }

        [Display(Name ="Remember Me")]
        public bool RememberMe { get; set; }

        public string ReturnUrl { get; set; }
    }
}

[HttpGet]
        public IActionResult Login(string returnUrl="")
        {
            var model = new LogInViewModel();
            model.ReturnUrl = returnUrl;
            return View(model);
        }
        
        [HttpPost]
        public async Task<IActionResult> Login(LogInViewModel model)
        {
            if (ModelState.IsValid)
            {
                var result = await _signInManager.PasswordSignInAsync(model.UserName, model.Password, model.RememberMe, false);
                if (result.Succeeded)
                {
                    if (!string.IsNullOrEmpty(model.ReturnUrl) && Url.IsLocalUrl(model.ReturnUrl))
                    {
                        return Redirect(model.ReturnUrl);
                    }
                    else
                    {
                        return RedirectToAction("Index", "Home");
                    }
                }
            }
            ModelState.AddModelError("", "Invalid login attempt");
            return View(model);
        }