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<?php
/*
* Created on Oct 13, 2006
*
* API for MediaWiki 1.8+
*
* Copyright (C) 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
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* 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.
* http://www.gnu.org/copyleft/gpl.html
*/
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, $action);
}
/**
* This module uses a custom feed wrapper printer.
*/
public function getCustomPrinter() {
return new ApiFormatFeedWrapper($this->getMain());
}
/**
* 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() {
global $wgFeedClasses, $wgFeedLimit, $wgSitename, $wgContLanguageCode;
try {
$params = $this->extractRequestParams();
// limit to the number of hours going from now back
$endTime = wfTimestamp(TS_MW, time() - intval($params['hours'] * 60 * 60));
$dbr = wfGetDB( DB_SLAVE );
// 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' => $dbr->timestamp($endTime), // stop at this time
'wllimit' => (50 > $wgFeedLimit) ? $wgFeedLimit : 50
);
// Check for 'allrev' parameter, and if found, show all revisions to each page on wl.
if ( ! is_null ( $params['allrev'] ) ) $fauxReqArr['wlallrev'] = '';
// Create the request
$fauxReq = new FauxRequest ( $fauxReqArr );
// Execute
$module = new ApiMain($fauxReq);
$module->execute();
// Get data array
$data = $module->getResultData();
$feedItems = array ();
foreach ($data['query']['watchlist'] as $info) {
$feedItems[] = $this->createFeedItem($info);
}
$feedTitle = $wgSitename . ' - ' . wfMsgForContent('watchlist') . ' [' . $wgContLanguageCode . ']';
$feedUrl = SpecialPage::getTitleFor( 'Watchlist' )->getFullUrl();
$feed = new $wgFeedClasses[$params['feedformat']] ($feedTitle, htmlspecialchars(wfMsgForContent('watchlist')), $feedUrl);
ApiFormatFeedWrapper :: setResult($this->getResult(), $feed, $feedItems);
} catch (Exception $e) {
// Error results should not be cached
$this->getMain()->setCacheMaxAge(0);
$feedTitle = $wgSitename . ' - Error - ' . wfMsgForContent('watchlist') . ' [' . $wgContLanguageCode . ']';
$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, $feedItems);
}
}
private function createFeedItem($info) {
$titleStr = $info['title'];
$title = Title :: newFromText($titleStr);
$titleUrl = $title->getFullUrl();
$comment = isset( $info['comment'] ) ? $info['comment'] : null;
$timestamp = $info['timestamp'];
$user = $info['user'];
$completeText = "$comment ($user)";
return new FeedItem($titleStr, $completeText, $titleUrl, $timestamp, $user);
}
public function getAllowedParams() {
global $wgFeedClasses;
$feedFormatNames = array_keys($wgFeedClasses);
return array (
'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' => null
);
}
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.'
);
}
public function getDescription() {
return 'This module returns a watchlist feed';
}
protected function getExamples() {
return array (
'api.php?action=feedwatchlist'
);
}
public function getVersion() {
return __CLASS__ . ': $Id: ApiFeedWatchlist.php 35098 2008-05-20 17:13:28Z ialex $';
}
}
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