Now we need to create an AccountController class, where we will define the action methods for authentication and authorization:

public class AccountController : Controller 
    { 
        private readonly UserManager<ApplicationUser> _userManager; 
        private readonly SignInManager<ApplicationUser> _signInManager; 
        private readonly IEmailSender _emailSender; 
        private readonly ISmsSender _smsSender; 
        private readonly ILogger _logger; 
 
        public AccountController( 
            UserManager<ApplicationUser> userManager, 
            SignInManager<ApplicationUser> signInManager, 
            IEmailSender emailSender, 
            ISmsSender smsSender, 
            ILoggerFactory loggerFactory) 
        { 
            _userManager = userManager; 
            _signInManager = signInManager; 
            _emailSender = emailSender; 
            _smsSender = smsSender; 
            _logger = loggerFactory.CreateLogger<AccountController>(); 
        } 
    } 

In the preceding code, we are using services provided by different components. UserManager and SignInManager are provided by ASP.NET Identity. The IEmailSender and ISmsSender are custom classes that we have written which will be used for sending e-mails and SMS messages. We will look more at e-mail and SMS later in this chapter. Logging is provided by the Microsoft Logging extension. The following is a simple login HTTPGET method. It simply stores the URL from where the Login method is accessed and returns the login page:

[HttpGet] 
        [AllowAnonymous] 
        public IActionResult Login(string returnUrl = null) 
        { 
            ViewData["ReturnUrl"] = returnUrl; 
            return View(); 
        }