const REALM = 'http://picasaweb.google.com/data/';
const USER_PREF_NAME = 'google_authsub_sesskey_picasa';
const UPLOAD_LOCATION = 'http://picasaweb.google.com/data/feed/api/user/default/albumid/default';
+ const ALBUM_PHOTO_LIST = 'http://picasaweb.google.com/data/feed/api/user/default/albumid/';
+ const PHOTO_SEARCH_URL = 'http://picasaweb.google.com/data/feed/api/user/default?kind=photo&q=';
+ const LIST_ALBUMS_URL = 'http://picasaweb.google.com/data/feed/api/user/default';
private $google_curl = null;
return false;
}
}
+
+ /**
+ * Returns list of photos for file picker.
+ * If top level then returns list of albums, otherwise
+ * photos within an album.
+ *
+ * @param string $path The path to files (assumed to be albumid)
+ * @return mixed $files A list of files for the file picker
+ */
+ public function get_file_list($path = ''){
+ if(!$path){
+ return $this->get_albums();
+ }else{
+ return $this->get_album_photos($path);
+ }
+ }
+
+ /**
+ * Returns list of photos in album specified
+ *
+ * @param int $albumid Photo album to list photos from
+ * @return mixed $files A list of files for the file picker
+ */
+ public function get_album_photos($albumid){
+ $albumcontent = $this->google_curl->get(google_picasa::ALBUM_PHOTO_LIST.$albumid);
+
+ return $this->get_photo_details($albumcontent);
+ }
+
+ /**
+ * Does text search on the users photos and returns
+ * matches in format for picasa api
+ *
+ * @param string $query Search terms
+ * @return mixed $files A list of files for the file picker
+ */
+ public function do_photo_search($query){
+ $content = $this->google_curl->get(google_picasa::PHOTO_SEARCH_URL.htmlentities($query));
+
+ return $this->get_photo_details($content);
+ }
+
+ /**
+ * Gets all the users albums and returns them as a list of folders
+ * for the file picker
+ *
+ * @return mixes $files Array in the format get_listing uses for folders
+ */
+ public function get_albums(){
+ $content = $this->google_curl->get(google_picasa::LIST_ALBUMS_URL);
+ $xml = new SimpleXMLElement($content);
+
+ $files = array();
+
+ foreach($xml->entry as $album){
+ $gphoto = $album->children('http://schemas.google.com/photos/2007');
+
+ $mediainfo = $album->children('http://search.yahoo.com/mrss/');
+ //hacky...
+ $thumbnailinfo = $mediainfo->group->thumbnail[0]->attributes();
+
+ $files[] = array( 'title' => (string) $gphoto->name,
+ 'date' => userdate($gphoto->timestamp),
+ 'size' => (int) $gphoto->bytesUsed,
+ 'path' => (string) $gphoto->id,
+ 'thumbnail' => (string) $thumbnailinfo['url'],
+ 'thumbnail_width' => (int) $thumbnailinfo['width'],
+ 'thumbnail_height' => (int) $thumbnailinfo['height'],
+ 'children' => array(),
+ );
+
+ }
+
+ return $files;
+ }
+
+ /**
+ * Recieves XML from a picasa list of photos and returns
+ * array in format for file picker.
+ *
+ * @param string $rawxml XML from picasa api
+ * @return mixed $files A list of files for the file picker
+ */
+ public function get_photo_details($rawxml){
+
+ $xml = new SimpleXMLElement($rawxml);
+
+ $files = array();
+
+ foreach($xml->entry as $photo){
+ $gphoto = $photo->children('http://schemas.google.com/photos/2007');
+
+ $mediainfo = $photo->children('http://search.yahoo.com/mrss/');
+ $fullinfo = $mediainfo->group->content->attributes();
+ //hacky...
+ $thumbnailinfo = $mediainfo->group->thumbnail[0]->attributes();
+
+ $files[] = array('title' => (string) $mediainfo->group->title,
+ 'date' => userdate($gphoto->timestamp),
+ 'size' => (int) $gphoto->size,
+ 'path' => $gphoto->albumid.'/'.$gphoto->id,
+ 'thumbnail' => (string) $thumbnailinfo['url'],
+ 'thumbnail_width' => (int) $thumbnailinfo['width'],
+ 'thumbnail_height' => (int) $thumbnailinfo['height'],
+ 'source' => (string) $fullinfo['url'],
+ );
+ }
+
+ return $files;
+ }
+
}
/**
--- /dev/null
+<?php
+/**
+ * Picasa Repository Plugin
+ *
+ * @author Dan Poltawski <talktodan@gmail.com>
+ * @version $Id$
+ * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
+ */
+
+require_once($CFG->libdir.'/googleapi.php');
+
+class repository_picasa extends repository {
+ private $subauthtoken = '';
+
+ public function __construct($repositoryid, $context = SITEID, $options = array()) {
+ global $USER;
+ parent::__construct($repositoryid, $context, $options);
+
+ // TODO: I wish there was somewhere we could explicitly put this outside of constructor..
+ $googletoken = optional_param('token', false, PARAM_RAW);
+ if($googletoken){
+ $gauth = new google_authsub(false, $googletoken); // will throw exception if fails
+ google_picasa::set_sesskey($gauth->get_sessiontoken(), $USER->id);
+ }
+
+ # fixme - we are not checking login before all functions in the repo api.. eg search
+ # MDL-17474
+ $this->check_login();
+ }
+
+ public function check_login() {
+ global $USER;
+
+ $sesskey = google_picasa::get_sesskey($USER->id);
+
+ if($sesskey){
+ try{
+ $gauth = new google_authsub($sesskey);
+ $this->subauthtoken = $sesskey;
+ return true;
+ }catch(Exception $e){
+ // sesskey is not valid, delete store and re-auth
+ google_picasa::delete_sesskey($USER->id);
+ }
+ }
+
+ return false;
+ }
+
+ public function print_login($ajax = true){
+ global $CFG;
+ if($ajax){
+ $ret = array();
+ $popup_btn = new stdclass;
+ $popup_btn->type = 'popup';
+ $returnurl = $CFG->wwwroot.'/repository/ws.php?callback=yes&repo_id='.$this->id;
+ $popup_btn->url = google_authsub::login_url($returnurl, google_picasa::REALM);
+ $ret['login'] = array($popup_btn);
+ return $ret;
+ }
+ }
+
+ public function get_listing($path='') {
+ $picasa = new google_picasa(new google_authsub($this->subauthtoken));
+
+ $ret = array();
+ $ret['dynload'] = true;
+ $ret['list'] = $picasa->get_file_list($path);
+ return $ret;
+ }
+
+ public function search($query){
+ $picasa = new google_picasa(new google_authsub($this->subauthtoken));
+
+ $ret = array();
+ $ret['list'] = $picasa->do_photo_search($query);
+ return $ret;
+ }
+
+ public function logout(){
+ global $USER;
+
+ $token = google_picasa::get_sesskey($USER->id);
+
+ $gauth = new google_authsub($token);
+ // revoke token from google
+ $gauth->revoke_session_token();
+
+ google_picasa::delete_sesskey($USER->id);
+ $this->subauthtoken = '';
+
+ return parent::logout();
+ }
+
+ public function get_name(){
+ return get_string('repositoryname', 'repository_picasa');
+ }
+}
+
+// Icon for this plugin retrieved from http://www.iconspedia.com/icon/picasa-2711.html
+// Where the license is said documented to be Free
projects / moodle.git / commitdiff
