public ActionResult ExternalLoginConfirmation(RegisterExternalLoginModel model, string returnUrl)
        {
            string provider       = null;
            string providerUserId = null;

            if (User.Identity.IsAuthenticated || !OAuthWebSecurity.TryDeserializeProviderUserId(model.ExternalLoginData, out provider, out providerUserId))
            {
                return(RedirectToAction("Manage"));
            }

            if (ModelState.IsValid)
            {
                // Insert a new user into the database
                using (PodcastingContext db = new PodcastingContext())
                {
                    UserProfile user = db.UserProfiles.FirstOrDefault(u => u.UserName.ToLower() == model.UserName.ToLower());
                    // Check if user already exists
                    if (user == null)
                    {
                        // Insert name into the profile table
                        db.UserProfiles.Add(new UserProfile {
                            UserName = model.UserName
                        });
                        db.SaveChanges();

                        OAuthWebSecurity.CreateOrUpdateAccount(provider, providerUserId, model.UserName);
                        OAuthWebSecurity.Login(provider, providerUserId, createPersistentCookie: false);

                        return(RedirectToLocal(returnUrl));
                    }
                    else
                    {
                        ModelState.AddModelError("UserName", "User name already exists. Please enter a different user name.");
                    }
                }
            }

            ViewBag.ProviderDisplayName = OAuthWebSecurity.GetOAuthClientData(provider).DisplayName;
            ViewBag.ReturnUrl           = returnUrl;
            return(View(model));
        }
        public ActionResult Create(Podcast podcast)
        {
            if (ModelState.IsValid)
            {
                podcast = PopulatePodcastWithRSS(podcast.RSSURI);

                if (podcast != null)
                {
                    db.Podcasts.Add(podcast);
                    db.SaveChanges();
                }
                return(RedirectToAction("Index"));
            }

            return(View(podcast));
        }