public async Task<ActionResult> Register(RegisterViewModel model)
        {
            if (ModelState.IsValid)
            {
                var user = new ApplicationUser { UserName = model.Email, Email = model.Email };
                var ravenSession = HttpContext.GetOwinContext().Get<IDocumentSession>();
                ravenSession.Store(user);
                var result = await UserManager.CreateAsync(user, model.Password);
                if (result.Succeeded)
                {
                    //  Comment the following line to prevent log in until the user is confirmed.
                    //  await SignInManager.SignInAsync(user, isPersistent:false, rememberBrowser:false);

                    string callbackUrl = await SendEmailConfirmationTokenAsync(user.Id, "Confirm your account");


                    ViewBag.Message = "Check your email and confirm your account, you must be confirmed "
                                    + "before you can log in.";

                    // For local debug only
                    ViewBag.Link = callbackUrl;

                    // Save the user we put in RavenDB.
                    ravenSession.SaveChanges();

                    return View("Info");
                    //return RedirectToAction("Index", "Home");
                }
                AddErrors(result);
            }

            // If we got this far, something failed, redisplay form
            return View(model);
        }
        public async Task<ActionResult> ExternalLoginConfirmation(ExternalLoginConfirmationViewModel model, string returnUrl)
        {
            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 };
                var ravenSession = HttpContext.GetOwinContext().Get<IDocumentSession>();
                ravenSession.Store(user);
                var result = await UserManager.CreateAsync(user);
                if (result.Succeeded)
                {
                    result = await UserManager.AddLoginAsync(user.Id, info.Login);
                    if (result.Succeeded)
                    {
                        await SignInManager.SignInAsync(user, isPersistent: false, rememberBrowser: false);
                        ravenSession.SaveChanges();
                        return RedirectToLocal(returnUrl);
                    }
                }
                AddErrors(result);
            }

            ViewBag.ReturnUrl = returnUrl;
            return View(model);
        }
 private async Task SignInAsync(ApplicationUser user, bool isPersistent)
 {
     AuthenticationManager.SignOut(DefaultAuthenticationTypes.ExternalCookie, DefaultAuthenticationTypes.TwoFactorCookie);
     AuthenticationManager.SignIn(new AuthenticationProperties { IsPersistent = isPersistent }, await user.GenerateUserIdentityAsync(UserManager));
 }