public async Task<ActionResult> ExternalLoginConfirmation(ExternalLoginConfirmationViewModel model, string returnUrl = null)
        {
            if (User.Identity.IsAuthenticated)
            {
                return RedirectToAction("Index", "Manage");
            }

            if (ModelState.IsValid)
            {
                // Get the information about the user from the external login provider
                var info = await AuthenticationManager.GetExternalLoginInfoAsync();
                if (info == null)
                {
                    return View("ExternalLoginFailure");
                }

                var user = new ApplicationUser { UserName = model.Email, Email = model.Email, Name = model.Name };
                var result = await UserManager.CreateAsync(user);

#if TESTING
                //Just for automated testing adding a claim named 'ManageStore' - Not required for production
                var manageClaim = info.ExternalIdentity.Claims.Where(c => c.Type == Areas.Admin.AdminConstants.ManageStore.Name).FirstOrDefault();
                if (manageClaim != null)
                {
                    await UserManager.AddClaimAsync(user, manageClaim, cancellationToken: Context.RequestAborted);
                }
#endif

                if (result.Succeeded)
                {
                    result = await UserManager.AddLoginAsync(user.Id, info.Login);
                    if (result.Succeeded)
                    {
                        await SignInManager.SignInAsync(user, isPersistent: false, rememberBrowser: false);
                        return RedirectToLocal(returnUrl);
                    }
                }
                AddErrors(result);
            }

            ViewBag.ReturnUrl = returnUrl;
            return View(model);
        }
        private static void CreateAdminUser(UserManager<ApplicationUser> userManager)
        {
            var roleManager = new RoleManager<IdentityRole>(new RoleStore<IdentityRole>(new ContosoWebContext(StaticConfig.DbContext.WebConnectionStringName)));
            if (!roleManager.RoleExists(AdminConstants.Role))
            {
                roleManager.Create(new IdentityRole(AdminConstants.Role));
            }

            var username = ConfigurationHelpers.GetString("Authentication.Administrator.UserName");
            var password = ConfigurationHelpers.GetString("Authentication.Administrator.Password");

            var user = userManager.FindByName(username);

            if (user == null)
            {
                user = new ApplicationUser { UserName = username, Email = username };
                var result = userManager.Create(user, password);
                if (!result.Succeeded)
                    throw new Exception(string.Format("Failed to create admin user: {0}", string.Join(",", result.Errors)));

                user = userManager.FindByName(username);
                userManager.AddToRole(user.Id, AdminConstants.Role);
                userManager.AddClaim(user.Id, new Claim(AdminConstants.ManageStore.Name, AdminConstants.ManageStore.Allowed));
            }
        }
        public async Task<ActionResult> Register(RegisterViewModel model)
        {
            if (ModelState.IsValid)
            {
                var user = new ApplicationUser { UserName = model.Email, Email = model.Email };
                var result = await UserManager.CreateAsync(user, model.Password);
                if (result.Succeeded)
                {
                    //Bug: Remember browser option missing?
                    //Uncomment this and comment the later part if account verification is not needed.
                    //await SignInManager.SignInAsync(user, isPersistent: false);

                    // For more information on how to enable account confirmation and password reset please visit http://go.microsoft.com/fwlink/?LinkID=320771
                    // Send an email with this link
                    string code = await UserManager.GenerateEmailConfirmationTokenAsync(user.Id);
                    var callbackUrl = Url.Action("ConfirmEmail", "Account", new { userId = user.Id, code = code }, protocol: Request.Url.Scheme);

                    await UserManager.SendEmailAsync(user.Id, "Confirm your account", string.Format("Please confirm your account by clicking <a href=\"{0}\">here</a>", callbackUrl));

#if !DEMO
                    return RedirectToAction("Index", "Home");
#else
                    //To display the email link in a friendly page instead of sending email
                    ViewBag.Link = callbackUrl;
                    return View("DemoLinkDisplay");
#endif
                }
                AddErrors(result);
            }

            // If we got this far, something failed, redisplay form
            return View(model);
        }