public function authenticate(CakeRequest $request, CakeResponse $response)
 {
     $this->loadSettings();
     $session = new CakeSession();
     if (isset($request->query) && isset($request->query['code']) && isset($request->query['state'])) {
         if ($request->query['state'] == $session->read('state')) {
             $token_url = "https://graph.facebook.com/oauth/access_token?" . "client_id=" . $this->settings["app_id"] . "&redirect_uri=" . urlencode($this->settings["url"]) . "&client_secret=" . $this->settings["app_secret"] . "&code=" . $request->query['code'];
             //TODO: use cake method to make request
             $response = file_get_contents($token_url);
             $params = null;
             parse_str($response, $params);
             if (isset($params['access_token'])) {
                 // Saves acces_token in Session
                 //TODO: use cake method to save in session
                 $_SESSION['access_token'] = $params['access_token'];
                 // Get's user data from Facebook
                 App::uses('FacebookUser', 'Facebook.Model');
                 $FacebookUser = new FacebookUser();
                 $FacebookUser->recursive = -1;
                 $fb_user = $FacebookUser->getLoginData();
                 // Checks if user exists, if not saves it in db
                 App::uses('User', 'Model');
                 $User = new User();
                 $user = $User->find("first", array("conditions" => array("User.uid" => $fb_user['FacebookUser']['uid'])));
                 if (empty($user)) {
                     $user = $FacebookUser->parseDataForDb($fb_user);
                     $User->create();
                     $User->save($user);
                     $user["User"]["id"] = $User->getLastInsertID();
                 }
                 return $user["User"];
             }
         }
     }
     return false;
 }