ApiFeedRecentChanges.php

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<?php
use MediaWiki\Feed\ChannelFeed;
use MediaWiki\MainConfigNames;
use MediaWiki\Request\DerivativeRequest;
use MediaWiki\SpecialPage\SpecialPageFactory;
use MediaWiki\Title\Title;
use Wikimedia\ParamValidator\ParamValidator;
use Wikimedia\ParamValidator\TypeDef\IntegerDef;
 
class ApiFeedRecentChanges extends ApiBase {
 
    private $params;
 
    private $specialPageFactory;
 
    public function __construct(
        ApiMain $mainModule,
        string $moduleName,
        SpecialPageFactory $specialPageFactory
    ) {
        parent::__construct( $mainModule, $moduleName );
        $this->specialPageFactory = $specialPageFactory;
    }
 
    public function getCustomPrinter() {
        return new ApiFormatFeedWrapper( $this->getMain() );
    }
 
    public function execute() {
        $config = $this->getConfig();
 
        $this->params = $this->extractRequestParams();
 
        if ( !$config->get( MainConfigNames::Feed ) ) {
            $this->dieWithError( 'feed-unavailable' );
        }
 
        $feedClasses = $config->get( MainConfigNames::FeedClasses );
        if ( !isset( $feedClasses[$this->params['feedformat']] ) ) {
            $this->dieWithError( 'feed-invalid' );
        }
 
        $this->getMain()->setCacheMode( 'public' );
        if ( !$this->getMain()->getParameter( 'smaxage' ) ) {
            // T65249: This page gets hit a lot, cache at least 15 seconds.
            $this->getMain()->setCacheMaxAge( 15 );
        }
 
        $feedFormat = $this->params['feedformat'];
        $specialPageName = $this->params['target'] !== null
            ? 'Recentchangeslinked'
            : 'Recentchanges';
 
        $formatter = $this->getFeedObject( $feedFormat, $specialPageName );
 
        // Parameters are passed via the request in the context… :(
        $context = new DerivativeContext( $this );
        $context->setRequest( new DerivativeRequest(
            $this->getRequest(),
            $this->params,
            $this->getRequest()->wasPosted()
        ) );
 
        // The row-getting functionality should be factored out of ChangesListSpecialPage too…
        $rc = $this->specialPageFactory->getPage( $specialPageName );
        if ( $rc === null ) {
            throw new RuntimeException( __METHOD__ . ' not able to instance special page ' . $specialPageName );
        }
        '@phan-var ChangesListSpecialPage $rc';
        $rc->setContext( $context );
        $rows = $rc->getRows();
 
        $feedItems = $rows ? ChangesFeed::buildItems( $rows ) : [];
 
        ApiFormatFeedWrapper::setResult( $this->getResult(), $formatter, $feedItems );
    }
 
    private function getFeedObject( $feedFormat, $specialPageName ) {
        if ( $specialPageName === 'Recentchangeslinked' ) {
            $title = Title::newFromText( $this->params['target'] );
            if ( !$title || $title->isExternal() ) {
                $this->dieWithError( [ 'apierror-invalidtitle', wfEscapeWikiText( $this->params['target'] ) ] );
            }
 
            $feed = new ChangesFeed( $feedFormat );
            $feedObj = $feed->getFeedObject(
                $this->msg( 'recentchangeslinked-title', $title->getPrefixedText() )
                    ->inContentLanguage()->text(),
                $this->msg( 'recentchangeslinked-feed' )->inContentLanguage()->text(),
                SpecialPage::getTitleFor( 'Recentchangeslinked' )->getFullURL()
            );
        } else {
            $feed = new ChangesFeed( $feedFormat );
            $feedObj = $feed->getFeedObject(
                $this->msg( 'recentchanges' )->inContentLanguage()->text(),
                $this->msg( 'recentchanges-feed-description' )->inContentLanguage()->text(),
                SpecialPage::getTitleFor( 'Recentchanges' )->getFullURL()
            );
        }
 
        return $feedObj;
    }
 
    public function getAllowedParams() {
        $config = $this->getConfig();
        $feedFormatNames = array_keys( $config->get( MainConfigNames::FeedClasses ) );
 
        return [
            'feedformat' => [
                ParamValidator::PARAM_DEFAULT => 'rss',
                ParamValidator::PARAM_TYPE => $feedFormatNames,
            ],
 
            'namespace' => [
                ParamValidator::PARAM_TYPE => 'namespace',
            ],
            // TODO: Rename this option to 'invertnamespaces'?
            'invert' => false,
            'associated' => false,
 
            'days' => [
                ParamValidator::PARAM_DEFAULT => 7,
                IntegerDef::PARAM_MIN => 1,
                ParamValidator::PARAM_TYPE => 'integer',
            ],
            'limit' => [
                ParamValidator::PARAM_DEFAULT => 50,
                IntegerDef::PARAM_MIN => 1,
                IntegerDef::PARAM_MAX => $config->get( MainConfigNames::FeedLimit ),
                ParamValidator::PARAM_TYPE => 'integer',
            ],
            'from' => [
                ParamValidator::PARAM_TYPE => 'timestamp',
            ],
 
            'hideminor' => false,
            'hidebots' => false,
            'hideanons' => false,
            'hideliu' => false,
            'hidepatrolled' => false,
            'hidemyself' => false,
            'hidecategorization' => false,
 
            'tagfilter' => [
                ParamValidator::PARAM_TYPE => 'string',
            ],
            'inverttags' => false,
 
            'target' => [
                ParamValidator::PARAM_TYPE => 'string',
            ],
            'showlinkedto' => false,
        ];
    }
 
    protected function getExamplesMessages() {
        return [
            'action=feedrecentchanges'
                => 'apihelp-feedrecentchanges-example-simple',
            'action=feedrecentchanges&days=30'
                => 'apihelp-feedrecentchanges-example-30days',
        ];
    }
}