App\Ninja\Repositories\AccountRepository::updateUserFromOauth PHP Method

    public function updateUserFromOauth($user, $firstName, $lastName, $email, $providerId, $oauthUserId)
    {
        if (!$user->registered) {
            $rules = ['email' => 'email|required|unique:users,email,' . $user->id . ',id'];
            $validator = Validator::make(['email' => $email], $rules);
            if ($validator->fails()) {
                $messages = $validator->messages();
                return $messages->first('email');
            }
            $user->email = $email;
            $user->first_name = $firstName;
            $user->last_name = $lastName;
            $user->registered = true;
            $user->account->startTrial(PLAN_PRO);
        }
        $user->oauth_provider_id = $providerId;
        $user->oauth_user_id = $oauthUserId;
        $user->save();
        return true;
    }

 /**
  * @param $provider
  * @param $hasCode
  * @return \Illuminate\Http\RedirectResponse
  */
 public function execute($provider, $hasCode)
 {
     if (!$hasCode) {
         return $this->getAuthorization($provider);
     }
     $socialiteUser = Socialite::driver($provider)->user();
     $providerId = AuthService::getProviderId($provider);
     if (Auth::check()) {
         $user = Auth::user();
         $isRegistered = $user->registered;
         $email = $socialiteUser->email;
         $oauthUserId = $socialiteUser->id;
         $name = Utils::splitName($socialiteUser->name);
         $result = $this->accountRepo->updateUserFromOauth($user, $name[0], $name[1], $email, $providerId, $oauthUserId);
         if ($result === true) {
             if (!$isRegistered) {
                 Session::flash('warning', trans('texts.success_message'));
                 Session::flash('onReady', 'handleSignedUp();');
             } else {
                 Session::flash('message', trans('texts.updated_settings'));
                 return redirect()->to('/settings/' . ACCOUNT_USER_DETAILS);
             }
         } else {
             Session::flash('error', $result);
         }
     } else {
         if ($user = $this->accountRepo->findUserByOauth($providerId, $socialiteUser->id)) {
             Auth::login($user, true);
             event(new UserLoggedIn());
         } else {
             Session::flash('error', trans('texts.invalid_credentials'));
             return redirect()->to('login');
         }
     }
     $redirectTo = Input::get('redirect_to') ?: 'dashboard';
     return redirect()->to($redirectTo);
 }