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<?php
/**
* @package com_zoo
* @author YOOtheme http://www.yootheme.com
* @copyright Copyright (C) YOOtheme GmbH
* @license http://www.gnu.org/licenses/gpl.html GNU/GPL
*/
/**
* Facebook helper class.
*
* @package Component.Helpers
* @since 2.0
*/
class FacebookHelper extends AppHelper {
/**
* Get Facebook Client.
*
* @param Application The application to get params from
*
* @return Facebook|null The Facebook client
* @since 2.0
*/
public function client($application = null) {
// get application
if (!$application) {
$application = $this->app->zoo->getApplication();
}
// get comment params
$params = $this->app->parameter->create()->loadArray($application ? $application->getParams()->get('global.comments.') : array());
if (!function_exists('curl_init')) {
return null;
}
// load facebook classes
$this->app->loader->register('Facebook', 'libraries:facebook/facebook.php');
$access_token = null;
if (isset($_SESSION['facebook_access_token'])) {
$access_token = $_SESSION['facebook_access_token'];
}
// Build FacebookOAuth object with client credentials.
return new Facebook($this->app, array('app_id' => $params->get('facebook_app_id'), 'app_secret' => $params->get('facebook_app_secret'), 'access_token' => $access_token));
}
/**
* Get Facebook Fields.
*
* @param string $fb_uid Facebook user id
* @param array $fields Fields to acquire
* @param Application The application to get params from
*
* @return array The fields
* @since 2.0
*/
public function fields($fb_uid, $fields = null, $application = null) {
try {
$connection = $this->client($application);
if ($connection) {
$infos = $connection->getProfile($fb_uid);
if (is_object($infos)) {
if (is_array($fields)) {
return array_intersect_key((array) $infos, array_flip($fields));
} else {
return (array) $infos;
}
}
}
} catch (Exception $e) {
}
}
/**
* Logout from Facebook.
*
* @return self
* @since 2.0
*/
public function logout() {
// remove access token from session
$_SESSION['facebook_access_token'] = null;
return $this;
}
}