Expose $wgMaxArticleSize in siteinfo query api

[mediawiki.git] / includes / api / ApiFeedContributions.php

<?php
/**
 *
 *
 * Created on June 06, 2011
 *
 * Copyright © 2011 Sam Reed
 *
 * 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
 */

/**
 * @ingroup API
 */
class ApiFeedContributions extends ApiBase {

        /**
         * This module uses a custom feed wrapper printer.
         *
         * @return ApiFormatFeedWrapper
         */
        public function getCustomPrinter() {
                return new ApiFormatFeedWrapper( $this->getMain() );
        }

        public function execute() {
                $params = $this->extractRequestParams();

                $config = $this->getConfig();
                if ( !$config->get( 'Feed' ) ) {
                        $this->dieUsage( 'Syndication feeds are not available', 'feed-unavailable' );
                }

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

                if ( $params['showsizediff'] && $this->getConfig()->get( 'MiserMode' ) ) {
                        $this->dieUsage( 'Size difference is disabled in Miser Mode', 'sizediffdisabled' );
                }

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

                $target = $params['user'] == 'newbies'
                        ? 'newbies'
                        : Title::makeTitleSafe( NS_USER, $params['user'] )->getText();

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

                $pager = new ContribsPager( $this->getContext(), [
                        'target' => $target,
                        'namespace' => $params['namespace'],
                        'year' => $params['year'],
                        'month' => $params['month'],
                        '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( intval( $row->page_namespace ), $row->page_title );
                if ( $title && $title->userCan( 'read', $this->getUser() ) ) {
                        $date = $row->rev_timestamp;
                        $comments = $title->getTalkPage()->getFullURL();
                        $revision = Revision::newFromRow( $row );

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

                return null;
        }

        /**
         * @param Revision $revision
         * @return string
         */
        protected function feedItemAuthor( $revision ) {
                return $revision->getUserText();
        }

        /**
         * @param Revision $revision
         * @return string
         */
        protected function feedItemDesc( $revision ) {
                if ( $revision ) {
                        $msg = wfMessage( 'colon-separator' )->inContentLanguage()->text();
                        $content = $revision->getContent();

                        if ( $content instanceof TextContent ) {
                                // only textual content has a "source view".
                                $html = nl2br( htmlspecialchars( $content->getNativeData() ) );
                        } 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 = '';
                        }

                        return '<p>' . htmlspecialchars( $revision->getUserText() ) . $msg .
                                htmlspecialchars( FeedItem::stripComment( $revision->getComment() ) ) .
                                "</p>\n<hr />\n<div>" . $html . '</div>';
                }

                return '';
        }

        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',
                ];
        }
}