<?php

/*
 * Created on Jan 4, 2008
 *
 * API for MediaWiki 1.8+
 *
 * Copyright (C) 2008 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');
}

/**
 * API module to allow users to watch a page
 *
 * @ingroup API
 */
class ApiWatch extends ApiBase {

	public function __construct($main, $action) {
		parent :: __construct($main, $action);
	}

	public function execute() {
		global $wgUser;
		if(!$wgUser->isLoggedIn())
			$this->dieUsage('You must be logged-in to have a watchlist', 'notloggedin');
		$params = $this->extractRequestParams();
		$title = Title::newFromText($params['title']);
		if(!$title)
			$this->dieUsageMsg(array('invalidtitle', $params['title']));
		$article = new Article($title);
		$res = array('title' => $title->getPrefixedText());
		if($params['unwatch'])
		{
			$res['unwatched'] = '';
			$success = $article->doUnwatch();
		}
		else
		{
			$res['watched'] = '';
			$success = $article->doWatch();
		}
		if(!$success)
			$this->dieUsageMsg(array('hookaborted'));
		$this->getResult()->addValue(null, $this->getModuleName(), $res);
	}

	public function isWriteMode() {
		return true;
	} 

	public function getAllowedParams() {
		return array (
			'title' => null,
			'unwatch' => false,
		);
	}

	public function getParamDescription() {
		return array (
			'title' => 'The page to (un)watch',
			'unwatch' => 'If set the page will be unwatched rather than watched',
		);
	}

	public function getDescription() {
		return array (
			'Add or remove a page from/to the current user\'s watchlist'
		);
	}

	protected function getExamples() {
		return array(
			'api.php?action=watch&title=Main_Page',
			'api.php?action=watch&title=Main_Page&unwatch',
		);
	}

	public function getVersion() {
		return __CLASS__ . ': $Id: ApiWatch.php 48091 2009-03-06 13:49:44Z catrope $';
	}
}
