/**
  * Return user if exists; create and return if doesn't
  *
  * @param $facebookUser
  * @return User
  */
 private function findOrCreateUser(Facebook\GraphNodes\GraphUser $facebookUser)
 {
     $this->currentUser = $facebookUser['name'];
     // var_dump($facebookUser);exit;
     $authUser = User::where('facebook_id', $facebookUser['id'])->first();
     if ($authUser) {
         $authUser->update(['avatar' => $facebookUser['picture']['url']]);
         return $authUser;
     }
     $hasher = app()->make('hash');
     return User::create(['name' => $facebookUser['name'], 'email' => $facebookUser['email'], 'password' => $hasher->make(app()->make('config')->get('app.pass_prefix') . $facebookUser['id']), 'facebook_id' => $facebookUser['id'], 'avatar' => $facebookUser['picture']['url']]);
 }
 public function authenticate($identity)
 {
     return \User::existsById((int) $identity);
 }
 /**
  * Create a new user instance after a valid registration.
  *
  * @return \App\Auth\User
  * @param  array  $data
  */
 protected function create(array $data)
 {
     return User::create(['name' => $data['name'], 'email' => $data['email'], 'password' => bcrypt($data['password'])]);
 }