ApiUndelete.php

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<?php
namespace MediaWiki\Api;
 
use MediaWiki\MainConfigNames;
use MediaWiki\Page\UndeletePage;
use MediaWiki\Page\UndeletePageFactory;
use MediaWiki\Page\WikiPageFactory;
use MediaWiki\Title\Title;
use MediaWiki\User\Options\UserOptionsLookup;
use MediaWiki\Watchlist\WatchedItemStoreInterface;
use MediaWiki\Watchlist\WatchlistManager;
use Wikimedia\ParamValidator\ParamValidator;
use Wikimedia\Rdbms\IDBAccessObject;
use Wikimedia\Timestamp\TimestampFormat as TS;
 
class ApiUndelete extends ApiBase {
 
    use ApiWatchlistTrait;
 
    public function __construct(
        ApiMain $mainModule,
        string $moduleName,
        WatchlistManager $watchlistManager,
        WatchedItemStoreInterface $watchedItemStore,
        UserOptionsLookup $userOptionsLookup,
        private readonly UndeletePageFactory $undeletePageFactory,
        private readonly WikiPageFactory $wikiPageFactory,
    ) {
        parent::__construct( $mainModule, $moduleName );
 
        // Variables needed in ApiWatchlistTrait trait
        $this->watchlistExpiryEnabled = $this->getConfig()->get( MainConfigNames::WatchlistExpiry );
        $this->watchlistMaxDuration =
            $this->getConfig()->get( MainConfigNames::WatchlistExpiryMaxDuration );
        $this->watchlistManager = $watchlistManager;
        $this->watchedItemStore = $watchedItemStore;
        $this->userOptionsLookup = $userOptionsLookup;
    }
 
    public function execute() {
        $this->useTransactionalTimeLimit();
 
        $params = $this->extractRequestParams();
 
        $user = $this->getUser();
        $block = $user->getBlock( IDBAccessObject::READ_LATEST );
        if ( $block && $block->isSitewide() ) {
            $this->dieBlocked( $block );
        }
 
        $titleObj = Title::newFromText( $params['title'] );
        if ( !$titleObj || $titleObj->isExternal() ) {
            $this->dieWithError( [ 'apierror-invalidtitle', wfEscapeWikiText( $params['title'] ) ] );
        }
        if ( !$titleObj->canExist() ) {
            $this->dieWithError( 'apierror-pagecannotexist' );
        }
 
        // Convert timestamps
        if ( !isset( $params['timestamps'] ) ) {
            $params['timestamps'] = [];
        }
        if ( !is_array( $params['timestamps'] ) ) {
            $params['timestamps'] = [ $params['timestamps'] ];
        }
        foreach ( $params['timestamps'] as $i => $ts ) {
            $params['timestamps'][$i] = wfTimestamp( TS::MW, $ts );
        }
 
        $undeletePage = $this->undeletePageFactory->newUndeletePage(
                $this->wikiPageFactory->newFromTitle( $titleObj ),
                $this->getAuthority()
            )
            ->setUndeleteOnlyTimestamps( $params['timestamps'] ?? [] )
            ->setUndeleteOnlyFileVersions( $params['fileids'] ?: [] )
            ->setTags( $params['tags'] ?: [] );
 
        if ( $params['undeletetalk'] ) {
            $undeletePage->setUndeleteAssociatedTalk( true );
        }
 
        $status = $undeletePage->undeleteIfAllowed( $params['reason'] );
        if ( $status->isOK() ) {
            // in case there are warnings
            $this->addMessagesFromStatus( $status );
        } else {
            $this->dieStatus( $status );
        }
 
        $restoredRevs = $status->getValue()[UndeletePage::REVISIONS_RESTORED];
        $restoredFiles = $status->getValue()[UndeletePage::FILES_RESTORED];
 
        if ( $restoredRevs === 0 && $restoredFiles === 0 ) {
            // BC for code that predates UndeletePage
            $this->dieWithError( 'apierror-cantundelete' );
        }
 
        if ( $restoredFiles ) {
            $this->getHookRunner()->onFileUndeleteComplete(
                $titleObj, $params['fileids'],
                $this->getUser(), $params['reason'] );
        }
 
        $watchlistExpiry = $this->getExpiryFromParams( $params, $titleObj, $user );
        $this->setWatch( $params['watchlist'], $titleObj, $user, null, $watchlistExpiry );
 
        $info = [
            'title' => $titleObj->getPrefixedText(),
            'revisions' => $restoredRevs,
            'fileversions' => $restoredFiles,
            'reason' => $params['reason']
        ];
        $this->getResult()->addValue( null, $this->getModuleName(), $info );
    }
 
    public function mustBePosted() {
        return true;
    }
 
    public function isWriteMode() {
        return true;
    }
 
    public function getAllowedParams() {
        return [
            'title' => [
                ParamValidator::PARAM_TYPE => 'string',
                ParamValidator::PARAM_REQUIRED => true
            ],
            'reason' => '',
            'tags' => [
                ParamValidator::PARAM_TYPE => 'tags',
                ParamValidator::PARAM_ISMULTI => true,
            ],
            'timestamps' => [
                ParamValidator::PARAM_TYPE => 'timestamp',
                ParamValidator::PARAM_ISMULTI => true,
            ],
            'fileids' => [
                ParamValidator::PARAM_TYPE => 'integer',
                ParamValidator::PARAM_ISMULTI => true,
            ],
            'undeletetalk' => false,
        ] + $this->getWatchlistParams();
    }
 
    public function needsToken() {
        return 'csrf';
    }
 
    protected function getExamplesMessages() {
        $title = Title::newMainPage()->getPrefixedText();
        $mp = rawurlencode( $title );
 
        return [
            "action=undelete&title={$mp}&token=123ABC&reason=Restoring%20{$mp}"
                => 'apihelp-undelete-example-page',
            "action=undelete&title={$mp}&token=123ABC" .
                '&timestamps=2007-07-03T22:00:45Z|2007-07-02T19:48:56Z'
                => 'apihelp-undelete-example-revisions',
        ];
    }
 
    public function getHelpUrls() {
        return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Undelete';
    }
}
 
class_alias( ApiUndelete::class, 'ApiUndelete' );