ApiFeedContributions.php

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<?php
use MediaWiki\MediaWikiServices;
use MediaWiki\Revision\RevisionAccessException;
use MediaWiki\Revision\RevisionRecord;
use MediaWiki\Revision\RevisionStore;
use MediaWiki\Revision\SlotRecord;

class ApiFeedContributions extends ApiBase {

    private $revisionStore;

    private $titleParser;

    public function getCustomPrinter() {
        return new ApiFormatFeedWrapper( $this->getMain() );
    }

    public function execute() {
        $this->revisionStore = MediaWikiServices::getInstance()->getRevisionStore();
        $this->titleParser = MediaWikiServices::getInstance()->getTitleParser();

        $params = $this->extractRequestParams();

        $config = $this->getConfig();
        if ( !$config->get( 'Feed' ) ) {
            $this->dieWithError( 'feed-unavailable' );
        }

        $feedClasses = $config->get( 'FeedClasses' );
        if ( !isset( $feedClasses[$params['feedformat']] ) ) {
            $this->dieWithError( 'feed-invalid' );
        }

        if ( $params['showsizediff'] && $this->getConfig()->get( 'MiserMode' ) ) {
            $this->dieWithError( 'apierror-sizediffdisabled' );
        }

        $msg = wfMessage( 'Contributions' )->inContentLanguage()->text();
        $feedTitle = $config->get( 'Sitename' ) . ' - ' . $msg .
            ' [' . $config->get( 'LanguageCode' ) . ']';
        $feedUrl = SpecialPage::getTitleFor( 'Contributions', $params['user'] )->getFullURL();

        $target = 'newbies';
        if ( $params['user'] != 'newbies' ) {
            try {
                $target = $this->titleParser
                    ->parseTitle( $params['user'], NS_USER )
                    ->getText();
            } catch ( MalformedTitleException $e ) {
                $this->dieWithError(
                    [ 'apierror-baduser', 'user', wfEscapeWikiText( $params['user'] ) ],
                    'baduser_' . $this->encodeParamName( 'user' )
                );
            }
        }

        $feed = new $feedClasses[$params['feedformat']] (
            $feedTitle,
            htmlspecialchars( $msg ),
            $feedUrl
        );

        // Convert year/month parameters to end parameter
        $params['start'] = '';
        $params['end'] = '';
        $params = ContribsPager::processDateFilter( $params );

        $pager = new ContribsPager( $this->getContext(), [
            'target' => $target,
            'namespace' => $params['namespace'],
            'start' => $params['start'],
            'end' => $params['end'],
            'tagFilter' => $params['tagfilter'],
            'deletedOnly' => $params['deletedonly'],
            'topOnly' => $params['toponly'],
            'newOnly' => $params['newonly'],
            'hideMinor' => $params['hideminor'],
            'showSizeDiff' => $params['showsizediff'],
        ] );

        $feedLimit = $this->getConfig()->get( 'FeedLimit' );
        if ( $pager->getLimit() > $feedLimit ) {
            $pager->setLimit( $feedLimit );
        }

        $feedItems = [];
        if ( $pager->getNumRows() > 0 ) {
            $count = 0;
            $limit = $pager->getLimit();
            foreach ( $pager->mResult as $row ) {
                // ContribsPager selects one more row for navigation, skip that row
                if ( ++$count > $limit ) {
                    break;
                }
                $item = $this->feedItem( $row );
                if ( $item !== null ) {
                    $feedItems[] = $item;
                }
            }
        }

        ApiFormatFeedWrapper::setResult( $this->getResult(), $feed, $feedItems );
    }

    protected function feedItem( $row ) {
        // This hook is the api contributions equivalent to the
        // ContributionsLineEnding hook. Hook implementers may cancel
        // the hook to signal the user is not allowed to read this item.
        $feedItem = null;
        $hookResult = Hooks::run(
            'ApiFeedContributions::feedItem',
            [ $row, $this->getContext(), &$feedItem ]
        );
        // Hook returned a valid feed item
        if ( $feedItem instanceof FeedItem ) {
            return $feedItem;
        // Hook was canceled and did not return a valid feed item
        } elseif ( !$hookResult ) {
            return null;
        }

        // Hook completed and did not return a valid feed item
        $title = Title::makeTitle( (int)$row->page_namespace, $row->page_title );
        $user = $this->getUser();

        if ( $title && $this->getPermissionManager()->userCan( 'read', $user, $title ) ) {
            $date = $row->rev_timestamp;
            $comments = $title->getTalkPage()->getFullURL();
            $revision = $this->revisionStore->newRevisionFromRow( $row );

            return new FeedItem(
                $title->getPrefixedText(),
                $this->feedItemDesc( $revision ),
                $title->getFullURL( [ 'diff' => $revision->getId() ] ),
                $date,
                $this->feedItemAuthor( $revision ),
                $comments
            );
        }

        return null;
    }

    protected function feedItemAuthor( RevisionRecord $revision ) {
        $user = $revision->getUser();
        return $user ? $user->getName() : '';
    }

    protected function feedItemDesc( RevisionRecord $revision ) {
        $msg = wfMessage( 'colon-separator' )->inContentLanguage()->text();
        try {
            $content = $revision->getContent( SlotRecord::MAIN );
        } catch ( RevisionAccessException $e ) {
            $content = null;
        }

        if ( $content instanceof TextContent ) {
            // only textual content has a "source view".
            $html = nl2br( htmlspecialchars( $content->getText() ) );
        } else {
            // XXX: we could get an HTML representation of the content via getParserOutput, but that may
            //     contain JS magic and generally may not be suitable for inclusion in a feed.
            //     Perhaps Content should have a getDescriptiveHtml method and/or a getSourceText method.
            // Compare also FeedUtils::formatDiffRow.
            $html = '';
        }

        $comment = $revision->getComment();

        return '<p>' . htmlspecialchars( $this->feedItemAuthor( $revision ) ) . $msg .
            htmlspecialchars( FeedItem::stripComment( $comment ? $comment->text : '' ) ) .
            "</p>\n<hr />\n<div>" . $html . '</div>';
    }

    public function getAllowedParams() {
        $feedFormatNames = array_keys( $this->getConfig()->get( 'FeedClasses' ) );

        $ret = [
            'feedformat' => [
                ApiBase::PARAM_DFLT => 'rss',
                ApiBase::PARAM_TYPE => $feedFormatNames
            ],
            'user' => [
                ApiBase::PARAM_TYPE => 'user',
                ApiBase::PARAM_REQUIRED => true,
            ],
            'namespace' => [
                ApiBase::PARAM_TYPE => 'namespace'
            ],
            'year' => [
                ApiBase::PARAM_TYPE => 'integer'
            ],
            'month' => [
                ApiBase::PARAM_TYPE => 'integer'
            ],
            'tagfilter' => [
                ApiBase::PARAM_ISMULTI => true,
                ApiBase::PARAM_TYPE => array_values( ChangeTags::listDefinedTags() ),
                ApiBase::PARAM_DFLT => '',
            ],
            'deletedonly' => false,
            'toponly' => false,
            'newonly' => false,
            'hideminor' => false,
            'showsizediff' => [
                ApiBase::PARAM_DFLT => false,
            ],
        ];

        if ( $this->getConfig()->get( 'MiserMode' ) ) {
            $ret['showsizediff'][ApiBase::PARAM_HELP_MSG] = 'api-help-param-disabled-in-miser-mode';
        }

        return $ret;
    }

    protected function getExamplesMessages() {
        return [
            'action=feedcontributions&user=Example'
                => 'apihelp-feedcontributions-example-simple',
        ];
    }
}