includes/api/ApiWatch.php
<?php
/**
* Copyright © 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
*/
namespace MediaWiki\Api;
use MediaWiki\MainConfigNames;
use MediaWiki\Page\PageIdentity;
use MediaWiki\Title\Title;
use MediaWiki\Title\TitleFormatter;
use MediaWiki\User\User;
use MediaWiki\Watchlist\WatchlistManager;
use Wikimedia\ParamValidator\ParamValidator;
use Wikimedia\ParamValidator\TypeDef\ExpiryDef;
/**
* API module to allow users to watch a page
*
* @ingroup API
*/
class ApiWatch extends ApiBase {
/** @var ApiPageSet|null */
private $mPageSet = null;
/** @var bool Whether watchlist expiries are enabled. */
private $expiryEnabled;
/** @var string Relative maximum expiry. */
private $maxDuration;
protected WatchlistManager $watchlistManager;
private TitleFormatter $titleFormatter;
public function __construct(
ApiMain $mainModule,
$moduleName,
WatchlistManager $watchlistManager,
TitleFormatter $titleFormatter
) {
parent::__construct( $mainModule, $moduleName );
$this->watchlistManager = $watchlistManager;
$this->titleFormatter = $titleFormatter;
$this->expiryEnabled = $this->getConfig()->get( MainConfigNames::WatchlistExpiry );
$this->maxDuration = $this->getConfig()->get( MainConfigNames::WatchlistExpiryMaxDuration );
}
public function execute() {
$user = $this->getUser();
if ( !$user->isRegistered()
|| ( $user->isTemp() && !$user->isAllowed( 'editmywatchlist' ) )
) {
$this->dieWithError( 'watchlistanontext', 'notloggedin' );
}
$this->checkUserRightsAny( 'editmywatchlist' );
$params = $this->extractRequestParams();
$continuationManager = new ApiContinuationManager( $this, [], [] );
$this->setContinuationManager( $continuationManager );
$pageSet = $this->getPageSet();
// by default we use pageset to extract the page to work on.
// title is still supported for backward compatibility
if ( !isset( $params['title'] ) ) {
$pageSet->execute();
$res = $pageSet->getInvalidTitlesAndRevisions( [
'invalidTitles',
'special',
'missingIds',
'missingRevIds',
'interwikiTitles'
] );
foreach ( $pageSet->getMissingPages() as $page ) {
$r = $this->watchTitle( $page, $user, $params );
$r['missing'] = true;
$res[] = $r;
}
foreach ( $pageSet->getGoodPages() as $page ) {
$r = $this->watchTitle( $page, $user, $params );
$res[] = $r;
}
ApiResult::setIndexedTagName( $res, 'w' );
} else {
// dont allow use of old title parameter with new pageset parameters.
$extraParams = array_keys( array_filter( $pageSet->extractRequestParams(), static function ( $x ) {
return $x !== null && $x !== false;
} ) );
if ( $extraParams ) {
$this->dieWithError(
[
'apierror-invalidparammix-cannotusewith',
$this->encodeParamName( 'title' ),
$pageSet->encodeParamName( $extraParams[0] )
],
'invalidparammix'
);
}
$title = Title::newFromText( $params['title'] );
if ( !$title || !$this->watchlistManager->isWatchable( $title ) ) {
$this->dieWithError( [ 'invalidtitle', $params['title'] ] );
}
$res = $this->watchTitle( $title, $user, $params, true );
}
$this->getResult()->addValue( null, $this->getModuleName(), $res );
$this->setContinuationManager( null );
$continuationManager->setContinuationIntoResult( $this->getResult() );
}
private function watchTitle( PageIdentity $page, User $user, array $params,
$compatibilityMode = false
) {
$res = [ 'title' => $this->titleFormatter->getPrefixedText( $page ), 'ns' => $page->getNamespace() ];
if ( !$this->watchlistManager->isWatchable( $page ) ) {
$res['watchable'] = 0;
return $res;
}
if ( $params['unwatch'] ) {
$status = $this->watchlistManager->removeWatch( $user, $page );
$res['unwatched'] = $status->isOK();
} else {
$expiry = null;
// NOTE: If an expiry parameter isn't given, any existing expiries remain unchanged.
if ( $this->expiryEnabled && isset( $params['expiry'] ) ) {
$expiry = $params['expiry'];
$res['expiry'] = ApiResult::formatExpiry( $expiry );
}
$status = $this->watchlistManager->addWatch( $user, $page, $expiry );
$res['watched'] = $status->isOK();
}
if ( !$status->isOK() ) {
if ( $compatibilityMode ) {
$this->dieStatus( $status );
}
$res['errors'] = $this->getErrorFormatter()->arrayFromStatus( $status, 'error' );
$res['warnings'] = $this->getErrorFormatter()->arrayFromStatus( $status, 'warning' );
if ( !$res['warnings'] ) {
unset( $res['warnings'] );
}
}
return $res;
}
/**
* Get a cached instance of an ApiPageSet object
* @return ApiPageSet
*/
private function getPageSet() {
$this->mPageSet ??= new ApiPageSet( $this );
return $this->mPageSet;
}
public function mustBePosted() {
return true;
}
public function isWriteMode() {
return true;
}
public function needsToken() {
return 'watch';
}
public function getAllowedParams( $flags = 0 ) {
$result = [
'title' => [
ParamValidator::PARAM_TYPE => 'string',
ParamValidator::PARAM_DEPRECATED => true,
],
'expiry' => [
ParamValidator::PARAM_TYPE => 'expiry',
ExpiryDef::PARAM_MAX => $this->maxDuration,
ExpiryDef::PARAM_USE_MAX => true,
],
'unwatch' => false,
'continue' => [
ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
],
];
// If expiry is not enabled, don't accept the parameter.
if ( !$this->expiryEnabled ) {
unset( $result['expiry'] );
}
if ( $flags ) {
$result += $this->getPageSet()->getFinalParams( $flags );
}
return $result;
}
protected function getExamplesMessages() {
$title = Title::newMainPage()->getPrefixedText();
$mp = rawurlencode( $title );
// Logically expiry example should go before unwatch examples.
$examples = [
"action=watch&titles={$mp}&token=123ABC"
=> 'apihelp-watch-example-watch',
];
if ( $this->expiryEnabled ) {
$examples["action=watch&titles={$mp}|Foo|Bar&expiry=1%20month&token=123ABC"]
= 'apihelp-watch-example-watch-expiry';
}
return array_merge( $examples, [
"action=watch&titles={$mp}&unwatch=&token=123ABC"
=> 'apihelp-watch-example-unwatch',
'action=watch&generator=allpages&gapnamespace=0&token=123ABC'
=> 'apihelp-watch-example-generator',
] );
}
public function getHelpUrls() {
return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Watch';
}
}
/** @deprecated class alias since 1.43 */
class_alias( ApiWatch::class, 'ApiWatch' );