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 result = await UserManager.CreateAsync(user);
                if (result.Succeeded)
                {
                    result = await UserManager.AddLoginAsync(user.Id, info.Login);
                    if (result.Succeeded)
                    {
                        
                        var fb = new FacebookClient(Session["tokenFB"].ToString());
                        dynamic data = new System.Dynamic.ExpandoObject();
                        data.FirstName = "";
                        data.LastName = "";
                        data.Birthday = default(DateTime);
                        data.movies = null;
                        //data.Birthday = "";
                        data = fb.Get("/me?fields=first_name,last_name,email,birthday,movies");
                        UserInformation facebookUser = new UserInformation()
                        {
                            Birthday = DateTime.ParseExact(data.birthday, "MM/dd/yyyy", CultureInfo.InvariantCulture),
                            //Birthday = data.Birthday,
                            FirstName = data.first_name,
                            LastName = data.last_name,
                            Email = model.Email,
                            Id = user.Id
                        };
                        facebookUser.MovieLikes = new List<MovieLike>();
                        if (data.movies != null)
                        {
                            foreach (dynamic movie in data.movies.data)
                            {
                                TMDbManager movieManager = new TMDbManager();
                                MongoDBManager mm = new MongoDBManager();
                                var exists = await mm.FindMoviesByName((string)movie.name);
                                ObjectId? movieId = null;
                                if (exists.Count >= 1)
                                {
                                    movieId = exists.First().ID;
                                }
                                else
                                {
                                    movieId = await movieManager.InsertMovieByName(movie.name);
                                }
                                if (movieId != null)
                                {
                                    facebookUser.MovieLikes.Add(new MovieLike() { Id = movieId.Value, Name = movie.name });
                                }
                            }
                        }
                        
                        MongoDBManager mongoManager = new MongoDBManager();
                        mongoManager.InsertNewUser(facebookUser);
                        await SignInManager.SignInAsync(user, isPersistent: false, rememberBrowser: false);
                        return RedirectToLocal(returnUrl);
                    }
                }
                AddErrors(result);
            }

            ViewBag.ReturnUrl = returnUrl;
            return View(model);
        }
        public async Task<ActionResult> ExternalLoginCallback(string returnUrl)
        {
            var loginInfo = await AuthenticationManager.GetExternalLoginInfoAsync();
            if (loginInfo == null)
            {
                return RedirectToAction("Login");
            }

            Dictionary<string,object> facebookInfo = new Dictionary<string,object>();
            if (loginInfo.Login.LoginProvider == "Facebook")
            {
                var identity = AuthenticationManager.GetExternalIdentity(DefaultAuthenticationTypes.ExternalCookie);
                var access_token = identity.FindFirstValue("FacebookAccessToken");
                Session["tokenFB"] = access_token;
                var fb = new FacebookClient(access_token);
                //dynamic data = fb.Get("/me?fields=first_name,last_name,email,birthday");
                dynamic data = fb.Get("/me?fields=email");
                loginInfo.Email = data.email;
           }

            // Sign in the user with this external login provider if the user already has a login
            var result = await SignInManager.ExternalSignInAsync(loginInfo, isPersistent: false);
            switch (result)
            {
                case SignInStatus.Success:
                    return RedirectToLocal(returnUrl);
                case SignInStatus.LockedOut:
                    return View("Lockout");
                case SignInStatus.RequiresVerification:
                    return RedirectToAction("SendCode", new { ReturnUrl = returnUrl, RememberMe = false });
                case SignInStatus.Failure:
                default:
                    // If the user does not have an account, then prompt the user to create an account
                    ViewBag.ReturnUrl = returnUrl;
                    ViewBag.LoginProvider = loginInfo.Login.LoginProvider;
                    ExternalLoginConfirmationViewModel model = new ExternalLoginConfirmationViewModel
                    {
                        Email = loginInfo.Email
                    };
                    return View("ExternalLoginConfirmation", model);
            }
        }