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<?php
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/**
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* @file facebook_apps_helpers.inc Helper functions for the facebook_apps module.
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**/
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/**
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* Removes gunk from the end of a URL and strips it down to the base path.
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*
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* eg: http://www.ex.com/foo#?abc=123 --> http://www.ex.com/foo
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**/
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function _clean_url($url) {
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if (substr($url, -1) == '#') {
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$url = substr($url, 0, -1);
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}
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return $url;
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}
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/**
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* Translate internal Drupal URLs to external FB canvas URLs
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*
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* @param $url
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* The URL to translate. Should be a full path URL path.
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* @param $fb_conf
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* Use the $fb_conf param to override the default global $fb_conf
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**/
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function _fb_translate_url($url, $fb_conf = NULL) {
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if (!$fb_conf) {
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global $fb_conf;
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}
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// Replace the callback path with the apps path
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return strtr($url, array($fb_conf['callback_url'] => $fb_conf['app_url']));
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}
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function _fb_translate_text($text, $fb_conf = NULL) {
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if (!$fb_conf) {
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global $fb_conf;
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}
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return preg_replace('/' . preg_quote($fb_conf['callback_url']) . '/', $fb_conf['app_url'], $text);
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}
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/**
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* Helper function to get the full Facebook canvas URL for an internal
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* Drupal path.
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*/
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function facebook_apps_url($path) {
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global $fb_conf;
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return $fb_conf['app_url'] . '/' . $path;
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// return variable_get('facebook_canvas_url', '') . url($path);
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}
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/**
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* Get's local friends for a local user based on their Facebook friendships.
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*
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* @param $user
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* A local user
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* @return (array) $friends
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* An array of local users that are friends with $user on Facebook.
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**/
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function facebook_apps_get_local_friends($user = NULL) {
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if ($user === NULL) {
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global $user;
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} else if (is_numeric($user)) {
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$user = user_load(array('uid' => $user));
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}
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$facebook =& facebook_get_facebook_object();
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// TODO: This only returns relationships when we have a valid Facebook Apps session to work with, this should probably have a fail-over that uses FQL for times when we don't have that session.
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$fb_friends = $facebook->api_client->friends_get();
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if (count($fb_friends)) {
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// TODO: This query might run into problems if the user has A LOT of friends, especially if the database has a BIG authmap table.
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$result = db_query(
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"SELECT uid, authname
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FROM {authmap}
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WHERE module = 'facebook' AND authname IN (%s)",
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implode(', ', $fb_friends)
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);
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while ($row = db_fetch_object($result)) {
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$friends[$row->authname] = $row->uid;
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}
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return $friends;
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}
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return FALSE;
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}
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/**
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* Same as drupal_goto except uses the proper $facebook->redirect() function.
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*
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* @param (string) $path
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* A path inside your facebook application.
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* @param (array) $query
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* A query array.
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**/
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function facebook_goto($path, $query = NULL) {
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// if (isset($_REQUEST['destination'])) {
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// extract(parse_url(urldecode($_REQUEST['destination'])));
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// }
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// else if (isset($_REQUEST['edit']['destination'])) {
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// extract(parse_url(urldecode($_REQUEST['edit']['destination'])));
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// }
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global $fb_conf;
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$url = $fb_conf['app_url'] . '/' . $path . ($query ? '?' . http_build_query($query) : '');
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// Before the redirect, allow modules to react to the end of the page request.
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module_invoke_all('exit', $url);
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$facebook =& facebook_get_facebook_object();
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$facebook->redirect($url);
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exit();
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}
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function facebook_apps_get_app_path() {
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global $fb_conf;
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// Using parse_url ensures we get rid of the query string and fragment.
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$current = parse_url('http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']);
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return strtr(
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$current['scheme'] . '://' . $current['host'] . $current['path'],
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array($fb_conf['callback_url'] . '/' => '')
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);
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}
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/**
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* Get a list of facebook albums as a simple array. Works great as '#options'
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* in a form array.
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**/
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function facebook_apps_get_albums() {
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$facebook =& facebook_get_facebook_object();
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$fb_albums = $facebook->api_client->photos_getAlbums($facebook->user);
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foreach ($fb_albums as $album) {
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// Need to store the aid as a string, it overflow's the limits of an integer.
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$albums[(string) $album['aid']] = check_plain($album['name']);
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}
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return (array) $albums;
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}
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/**
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* Wrapper function to post to a user's minifeed. If we are posting to another user's feed
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* we have to first have his infinite session key.
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*/
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// function facebook_post_to_minifeed($feed_title, $feed_body, $img, $link, $drupal_uid = NULL) {
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// global $user;
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// if (isset($drupal_uid) && $drupal_uid != $user->uid) {
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// // If we are trying to post to a diff user's minifeed, need inf sesh key.
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// if (!($fbuser_session_key = facebook_apps_get_session_key($drupal_uid))) {
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// watchdog('Facebook', t('Could not retreive infinite session key for Drupal user %uid when trying to post to mini-feed.', array('%uid' => $drupal_uid)), WATCHDOG_WARNING);
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// return FALSE;
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// }
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//
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// require_once './'. drupal_get_path('module', 'facebook') .'/facebookapi_php5/facebook.php';
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//
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// extract(facebook_get_conf());
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// $facebook = new Facebook($facebook_apikey, $facebook_secretkey);
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// $facebook->api_client->session_key = $fbuser_session_key;
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// }
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// else {
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// // Just use the current FB session.
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// $facebook =& facebook_get_facebook_object();
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// }
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//
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// try {
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// $result = $facebook->api_client->feed_publishActionOfUser($feed_title, $feed_body, $img, $link);
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// }
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// catch (FacebookRestClientException $fb_e) {
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// error_handler($fb_e->getCode(), $fb_e->getMessage(), $fb_e->getFile(), $fb_e->getLine());
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// watchdog('Facebook', t("Exception thrown when posting %fbml to user's mini-feed.", array('%fbml' => $feed_title)), WATCHDOG_ERROR);
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// }
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//
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// if (is_array($result) && $result) {
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// $status = (boolean)$result[0];
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// if ($status) {
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// watchdog('Facebook', t("Successfully posted %fbml to user's mini-feed.", array('%fbml' => $feed_title)));
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// }
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// else {
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// watchdog('Facebook', t("Could not post %fbml to user's mini-feed, may have hit limit for this user.", array('%fbml' => $feed_title)), WATCHDOG_WARNING);
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// }
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// return $status;
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// }
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// return FALSE;
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// }
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// function &facebook_set_user() {
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// $facebook =& facebook_get_facebook_object();
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// $facebook->set_user($_SESSION['facebook_user'], $_SESSION['facebook_session_key']);
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// $fbuser = $facebook->require_login();
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// if (!$fbuser) {
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// // TODO: Return some error here.
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// }
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// return $facebook;
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// }
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