() are valid in URLs, not sure why we're using them as a finishing point in ApiFormatBase
[lhc/web/wiklou.git] / includes / api / ApiFeedWatchlist.php
index ac0bc35..eee8fa1 100644 (file)
@@ -1,12 +1,10 @@
 <?php
-
-
-/*
- * Created on Oct 13, 2006
+/**
  *
- * API for MediaWiki 1.8+
  *
- * Copyright (C) 2006 Yuri Astrakhan <FirstnameLastname@gmail.com>
+ * Created on Oct 13, 2006
+ *
+ * Copyright © 2006 Yuri Astrakhan <Firstname><Lastname>@gmail.com
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  *
  * You should have received a copy of the GNU General Public License along
  * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
  */
 
-if (!defined('MEDIAWIKI')) {
-       // Eclipse helper - will be ignored in production
-       require_once ("ApiBase.php");
-}
-
+/**
+ * This action allows users to get their watchlist items in RSS/Atom formats.
+ * When executed, it performs a nested call to the API to get the needed data,
+ * and formats it in a proper format.
+ *
+ * @ingroup API
+ */
 class ApiFeedWatchlist extends ApiBase {
 
-       public function __construct($main, $action) {
-               parent :: __construct($main, $action);
+       public function __construct( $main, $action ) {
+               parent::__construct( $main, $action );
        }
 
+       /**
+        * This module uses a custom feed wrapper printer.
+        *
+        * @return ApiFormatFeedWrapper
+        */
        public function getCustomPrinter() {
-               return new ApiFormatFeedWrapper($this->getMain());
+               return new ApiFormatFeedWrapper( $this->getMain() );
        }
 
+       private $linkToDiffs = false;
+
+       /**
+        * Make a nested call to the API to request watchlist items in the last $hours.
+        * Wrap the result as an RSS/Atom feed.
+        */
        public function execute() {
-               $feedformat = null;
-               extract($this->extractRequestParams());
-
-               // Prepare nested request
-               $params = new FauxRequest(array (
-                       'action' => 'query',
-                       'meta' => 'siteinfo',
-                       'siprop' => 'general',
-                       'list' => 'watchlist',
-                       'wlstart' => wfTimestamp(TS_MW, time() - intval( 3 * 86400 )), // limit to 3 days
-                       'wllimit' => 50
-               ));
-
-               // Execute
-               $module = new ApiMain($params);
-               $module->execute();
-
-               // Get clean data
-               $result = & $module->getResult();
-               $result->SanitizeData();
-               $data = & $result->GetData();
-
-               $feedItems = array ();
-               foreach ($data['query']['watchlist'] as $index => & $info) {
-                       $title = $info['title'];
-                       $titleUrl = Title :: newFromText($title)->getFullUrl();
-                       $feedItems[] = new FeedItem($title, '', $titleUrl, $info['timestamp'], $info['user']);
+               global $wgFeed, $wgFeedClasses, $wgFeedLimit, $wgSitename, $wgLanguageCode;
+
+               try {
+                       $params = $this->extractRequestParams();
+
+                       if( !$wgFeed ) {
+                               $this->dieUsage( 'Syndication feeds are not available', 'feed-unavailable' );
+                       }
+
+                       if( !isset( $wgFeedClasses[ $params['feedformat'] ] ) ) {
+                               $this->dieUsage( 'Invalid subscription feed type', 'feed-invalid' );
+                       }
+                       if ( !is_null( $params['wlexcludeuser'] ) ) {
+                               $fauxReqArr['wlexcludeuser'] = $params['wlexcludeuser'];
+                       }
+
+                       // limit to the number of hours going from now back
+                       $endTime = wfTimestamp( TS_MW, time() - intval( $params['hours'] * 60 * 60 ) );
+
+                       // Prepare parameters for nested request
+                       $fauxReqArr = array(
+                               'action' => 'query',
+                               'meta' => 'siteinfo',
+                               'siprop' => 'general',
+                               'list' => 'watchlist',
+                               'wlprop' => 'title|user|comment|timestamp',
+                               'wldir' => 'older', // reverse order - from newest to oldest
+                               'wlend' => $endTime, // stop at this time
+                               'wllimit' => ( 50 > $wgFeedLimit ) ? $wgFeedLimit : 50
+                       );
+
+                       if ( !is_null( $params['wlowner'] ) ) {
+                               $fauxReqArr['wlowner'] = $params['wlowner'];
+                       }
+                       if ( !is_null( $params['wltoken'] ) ) {
+                               $fauxReqArr['wltoken'] = $params['wltoken'];
+                       }
+
+                       // Support linking to diffs instead of article
+                       if ( $params['linktodiffs'] ) {
+                               $this->linkToDiffs = true;
+                               $fauxReqArr['wlprop'] .= '|ids';
+                       }
+
+                       // Check for 'allrev' parameter, and if found, show all revisions to each page on wl.
+                       if ( $params['allrev'] ) {
+                               $fauxReqArr['wlallrev'] = '';
+                       }
+
+                       // Create the request
+                       $fauxReq = new FauxRequest( $fauxReqArr );
+
+                       // Execute
+                       $module = new ApiMain( $fauxReq );
+                       $module->execute();
+
+                       // Get data array
+                       $data = $module->getResultData();
+
+                       $feedItems = array();
+                       foreach ( (array)$data['query']['watchlist'] as $info ) {
+                               $feedItems[] = $this->createFeedItem( $info );
+                       }
+
+                       $msg = wfMsgForContent( 'watchlist' );
+
+                       $feedTitle = $wgSitename . ' - ' . $msg . ' [' . $wgLanguageCode . ']';
+                       $feedUrl = SpecialPage::getTitleFor( 'Watchlist' )->getFullURL();
+
+                       $feed = new $wgFeedClasses[$params['feedformat']] ( $feedTitle, htmlspecialchars( $msg ), $feedUrl );
+
+                       ApiFormatFeedWrapper::setResult( $this->getResult(), $feed, $feedItems );
+
+               } catch ( Exception $e ) {
+
+                       // Error results should not be cached
+                       $this->getMain()->setCacheMaxAge( 0 );
+
+                       $feedTitle = $wgSitename . ' - Error - ' . wfMsgForContent( 'watchlist' ) . ' [' . $wgLanguageCode . ']';
+                       $feedUrl = SpecialPage::getTitleFor( 'Watchlist' )->getFullURL();
+
+                       $feedFormat = isset( $params['feedformat'] ) ? $params['feedformat'] : 'rss';
+                       $feed = new $wgFeedClasses[$feedFormat] ( $feedTitle, htmlspecialchars( wfMsgForContent( 'watchlist' ) ), $feedUrl );
+
+                       if ( $e instanceof UsageException ) {
+                               $errorCode = $e->getCodeString();
+                       } else {
+                               // Something is seriously wrong
+                               $errorCode = 'internal_api_error';
+                       }
+
+                       $errorText = $e->getMessage();
+                       $feedItems[] = new FeedItem( "Error ($errorCode)", $errorText, '', '', '' );
+                       ApiFormatFeedWrapper::setResult( $this->getResult(), $feed, $feedItems );
                }
+       }
 
-               global $wgFeedClasses, $wgSitename, $wgContLanguageCode;
-               $feedTitle = $wgSitename . ' - ' . wfMsgForContent('watchlist') . ' [' . $wgContLanguageCode . ']';
-               $feedUrl = Title :: makeTitle(NS_SPECIAL, 'Watchlist')->getFullUrl();
-               $feed = new $wgFeedClasses[$feedformat] ($feedTitle, '!Watchlist!', $feedUrl);
+       /**
+        * @param $info array
+        * @return FeedItem
+        */
+       private function createFeedItem( $info ) {
+               $titleStr = $info['title'];
+               $title = Title::newFromText( $titleStr );
+               if ( $this->linkToDiffs && isset( $info['revid'] ) ) {
+                       $titleUrl = $title->getFullURL( array( 'diff' => $info['revid'] ) );
+               } else {
+                       $titleUrl = $title->getFullURL();
+               }
+               $comment = isset( $info['comment'] ) ? $info['comment'] : null;
+               $timestamp = $info['timestamp'];
+               $user = $info['user'];
 
-               ApiFormatFeedWrapper :: setResult($this->getResult(), $feed, $feedItems);
+               $completeText = "$comment ($user)";
+
+               return new FeedItem( $titleStr, $completeText, $titleUrl, $timestamp, $user );
        }
 
-       protected function GetAllowedParams() {
+       public function getAllowedParams() {
                global $wgFeedClasses;
-               $feedFormatNames = array_keys($wgFeedClasses);
+               $feedFormatNames = array_keys( $wgFeedClasses );
                return array (
-                       'feedformat' => array (
-                               ApiBase :: PARAM_DFLT => 'rss',
-                               ApiBase :: PARAM_TYPE => $feedFormatNames
-                       )
+                       'feedformat' => array(
+                               ApiBase::PARAM_DFLT => 'rss',
+                               ApiBase::PARAM_TYPE => $feedFormatNames
+                       ),
+                       'hours' => array(
+                               ApiBase::PARAM_DFLT => 24,
+                               ApiBase::PARAM_TYPE => 'integer',
+                               ApiBase::PARAM_MIN => 1,
+                               ApiBase::PARAM_MAX => 72,
+                       ),
+                       'allrev' => false,
+                       'wlowner' => array(
+                               ApiBase::PARAM_TYPE => 'user'
+                       ),
+                       'wltoken' => array(
+                               ApiBase::PARAM_TYPE => 'string'
+                       ),
+                       'wlexcludeuser' => array(
+                               ApiBase::PARAM_TYPE => 'user'
+                       ),
+                       'linktodiffs' => false,
                );
        }
 
-       protected function GetParamDescription() {
-               return array (
-                       'feedformat' => 'The format of the feed'
+       public function getParamDescription() {
+               return array(
+                       'feedformat' => 'The format of the feed',
+                       'hours'      => 'List pages modified within this many hours from now',
+                       'allrev'     => 'Include multiple revisions of the same page within given timeframe',
+                       'wlowner'    => "The user whose watchlist you want (must be accompanied by {$this->getModulePrefix()}wltoken if it's not you)",
+                       'wltoken'    => 'Security token that requested user set in their preferences',
+                       'wlexcludeuser' => 'A user whose edits should not be shown in the watchlist',
+                       'linktodiffs' => 'Link to change differences instead of article pages',
                );
        }
 
-       protected function GetDescription() {
-               return 'This module returns a watchlist feed';
+       public function getDescription() {
+               return 'Returns a watchlist feed';
        }
 
-       protected function GetExamples() {
-               return array (
-                       'api.php?action=feedwatchlist'
+       public function getPossibleErrors() {
+               return array_merge( parent::getPossibleErrors(), array(
+                       array( 'code' => 'feed-unavailable', 'info' => 'Syndication feeds are not available' ),
+                       array( 'code' => 'feed-invalid', 'info' => 'Invalid subscription feed type' ),
+               ) );
+       }
+
+       public function getExamples() {
+               return array(
+                       'api.php?action=feedwatchlist',
+                       'api.php?action=feedwatchlist&allrev=&linktodiffs=&hours=6'
                );
        }
 
+       public function getHelpUrls() {
+               return 'https://www.mediawiki.org/wiki/API:Watchlist_feed';
+       }
+
        public function getVersion() {
                return __CLASS__ . ': $Id$';
        }
 }
-?>
\ No newline at end of file