App\services\AuthService::execute PHP Method

    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);
    }

 /**
  * @param $provider
  * @param Request $request
  *
  * @return \Illuminate\Http\RedirectResponse
  */
 public function authLogin($provider, Request $request)
 {
     return $this->authService->execute($provider, $request->has('code'));
 }