ApiQueryRecentChanges.php

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<?php
namespace MediaWiki\Api;
 
use MediaWiki\CommentFormatter\RowCommentFormatter;
use MediaWiki\CommentStore\CommentStore;
use MediaWiki\Logging\LogEventsList;
use MediaWiki\Logging\LogFormatterFactory;
use MediaWiki\Logging\LogPage;
use MediaWiki\MainConfigNames;
use MediaWiki\ParamValidator\TypeDef\NamespaceDef;
use MediaWiki\ParamValidator\TypeDef\UserDef;
use MediaWiki\RecentChanges\ChangesList;
use MediaWiki\RecentChanges\ChangesListQuery\ChangesListQuery;
use MediaWiki\RecentChanges\ChangesListQuery\ChangesListQueryFactory;
use MediaWiki\RecentChanges\RecentChange;
use MediaWiki\RecentChanges\RecentChangeLookup;
use MediaWiki\Revision\RevisionRecord;
use MediaWiki\Revision\SlotRecord;
use MediaWiki\Revision\SlotRoleRegistry;
use MediaWiki\Title\Title;
use MediaWiki\User\UserNameUtils;
use stdClass;
use Wikimedia\ParamValidator\ParamValidator;
use Wikimedia\ParamValidator\TypeDef\IntegerDef;
use Wikimedia\Timestamp\TimestampFormat as TS;
 
class ApiQueryRecentChanges extends ApiQueryGeneratorBase {
 
    private CommentStore $commentStore;
    private RowCommentFormatter $commentFormatter;
    private SlotRoleRegistry $slotRoleRegistry;
    private UserNameUtils $userNameUtils;
    private LogFormatterFactory $logFormatterFactory;
    private ChangesListQueryFactory $changesListQueryFactory;
    private RecentChangeLookup $recentChangeLookup;
 
    private $formattedComments = [];
 
    public function __construct(
        ApiQuery $query,
        string $moduleName,
        CommentStore $commentStore,
        RowCommentFormatter $commentFormatter,
        SlotRoleRegistry $slotRoleRegistry,
        UserNameUtils $userNameUtils,
        LogFormatterFactory $logFormatterFactory,
        ChangesListQueryFactory $changesListQueryFactory,
        RecentChangeLookup $recentChangeLookup,
    ) {
        parent::__construct( $query, $moduleName, 'rc' );
        $this->commentStore = $commentStore;
        $this->commentFormatter = $commentFormatter;
        $this->slotRoleRegistry = $slotRoleRegistry;
        $this->userNameUtils = $userNameUtils;
        $this->logFormatterFactory = $logFormatterFactory;
        $this->changesListQueryFactory = $changesListQueryFactory;
        $this->recentChangeLookup = $recentChangeLookup;
    }
 
    private bool $fld_comment = false;
    private bool $fld_parsedcomment = false;
    private bool $fld_user = false;
    private bool $fld_userid = false;
    private bool $fld_flags = false;
    private bool $fld_timestamp = false;
    private bool $fld_title = false;
    private bool $fld_ids = false;
    private bool $fld_sizes = false;
    private bool $fld_redirect = false;
    private bool $fld_patrolled = false;
    private bool $fld_loginfo = false;
    private bool $fld_tags = false;
    private bool $fld_sha1 = false;
 
    public function initProperties( $prop ) {
        $this->fld_comment = isset( $prop['comment'] );
        $this->fld_parsedcomment = isset( $prop['parsedcomment'] );
        $this->fld_user = isset( $prop['user'] );
        $this->fld_userid = isset( $prop['userid'] );
        $this->fld_flags = isset( $prop['flags'] );
        $this->fld_timestamp = isset( $prop['timestamp'] );
        $this->fld_title = isset( $prop['title'] );
        $this->fld_ids = isset( $prop['ids'] );
        $this->fld_sizes = isset( $prop['sizes'] );
        $this->fld_redirect = isset( $prop['redirect'] );
        $this->fld_patrolled = isset( $prop['patrolled'] );
        $this->fld_loginfo = isset( $prop['loginfo'] );
        $this->fld_tags = isset( $prop['tags'] );
        $this->fld_sha1 = isset( $prop['sha1'] );
    }
 
    public function execute() {
        $this->run();
    }
 
    public function executeGenerator( $resultPageSet ) {
        $this->run( $resultPageSet );
    }
 
    public function run( $resultPageSet = null ) {
        $user = $this->getUser();
        /* Get the parameters of the request. */
        $params = $this->extractRequestParams();
 
        $query = $this->changesListQueryFactory->newQuery();
        $query->watchlistUser( $user )
            ->audience( $this->getAuthority() );
 
        $sources = $this->recentChangeLookup->getAllSources();
 
        if ( $params['dir'] === 'newer' ) {
            $query->orderBy( ChangesListQuery::SORT_TIMESTAMP_ASC );
        }
        $startTimestamp = $params['start'];
        $end = $params['end'];
        if ( $params['continue'] !== null ) {
            $cont = $this->parseContinueParamOrDie( $params['continue'], [ 'timestamp', 'int' ] );
            $startTimestamp = $cont[0];
            $startId = $cont[1];
        } else {
            $startId = null;
        }
        if ( $startTimestamp !== null ) {
            $query->startAt( $startTimestamp, $startId );
        }
        if ( $end !== null ) {
            $query->endAt( $end );
        }
 
        if ( $params['type'] !== null ) {
            $sources = array_intersect( $sources,
                $this->recentChangeLookup->convertTypeToSources( $params['type'] ) );
        }
 
        $title = $params['title'];
        if ( $title !== null ) {
            $titleObj = Title::newFromText( $title );
            if ( $titleObj === null || $titleObj->isExternal() ) {
                $this->dieWithError( [ 'apierror-invalidtitle', wfEscapeWikiText( $title ) ] );
            } else {
                if ( $params['namespace'] && !in_array( $titleObj->getNamespace(), $params['namespace'] ) ) {
                    $this->requireMaxOneParameter( $params, 'title', 'namespace' );
                }
                $query->requireTitle( $titleObj );
            }
        } elseif ( $params['namespace'] !== null ) {
            $query->requireNamespaces( $params['namespace'] );
        }
 
        if ( $params['show'] !== null ) {
            $show = array_fill_keys( $params['show'], true );
 
            /* Check for conflicting parameters. */
            if ( ( isset( $show['minor'] ) && isset( $show['!minor'] ) )
                || ( isset( $show['bot'] ) && isset( $show['!bot'] ) )
                || ( isset( $show['anon'] ) && isset( $show['!anon'] ) )
                || ( isset( $show['redirect'] ) && isset( $show['!redirect'] ) )
                || ( isset( $show['patrolled'] ) && isset( $show['!patrolled'] ) )
                || ( isset( $show['patrolled'] ) && isset( $show['unpatrolled'] ) )
                || ( isset( $show['!patrolled'] ) && isset( $show['unpatrolled'] ) )
                || ( isset( $show['autopatrolled'] ) && isset( $show['!autopatrolled'] ) )
                || ( isset( $show['autopatrolled'] ) && isset( $show['unpatrolled'] ) )
                || ( isset( $show['autopatrolled'] ) && isset( $show['!patrolled'] ) )
            ) {
                $this->dieWithError( 'apierror-show' );
            }
 
            // Check permissions
            if ( $this->includesPatrollingFlags( $show ) && !$user->useRCPatrol() && !$user->useNPPatrol() ) {
                $this->dieWithError( 'apierror-permissiondenied-patrolflag', 'permissiondenied' );
            }
 
            /* Add additional conditions to query depending upon parameters. */
            $showActions = [
                'minor' => [ 'require', 'minor', true ],
                '!minor' => [ 'exclude', 'minor', true ],
                'bot' => [ 'require', 'bot', true ],
                '!bot' => [ 'exclude', 'bot', true ],
                'anon' => [ 'exclude', 'named' ],
                '!anon' => [ 'require', 'named' ],
                'patrolled' => [ 'exclude', 'patrolled', RecentChange::PRC_UNPATROLLED ],
                '!patrolled' => [ 'require', 'patrolled', RecentChange::PRC_UNPATROLLED ],
                'redirect' => [ 'require', 'redirect', true ],
                '!redirect' => [ 'exclude', 'redirect', true ],
                'autopatrolled' => [ 'require', 'patrolled', RecentChange::PRC_AUTOPATROLLED ],
                '!autopatrolled' => [ 'exclude', 'patrolled', RecentChange::PRC_AUTOPATROLLED ],
            ];
            foreach ( $show as $name => $unused ) {
                if ( isset( $showActions[$name] ) ) {
                    $query->applyAction( ...$showActions[$name] );
                }
            }
 
            if ( isset( $show['unpatrolled'] ) ) {
                // See ChangesList::isUnpatrolled
                if ( $user->useRCPatrol() ) {
                    $query->requirePatrolled( RecentChange::PRC_UNPATROLLED );
                } elseif ( $user->useNPPatrol() ) {
                    $query->requirePatrolled( RecentChange::PRC_UNPATROLLED );
                    $sources = array_intersect( $sources, [ RecentChange::SRC_NEW ] );
                }
            }
        }
 
        $this->requireMaxOneParameter( $params, 'user', 'excludeuser' );
 
        if ( $params['prop'] !== null ) {
            $prop = array_fill_keys( $params['prop'], true );
 
            /* Set up internal members based upon params. */
            $this->initProperties( $prop );
        }
 
        if ( $this->fld_user || $this->fld_userid ) {
            $query->rcUserFields();
        }
 
        if ( $params['user'] !== null ) {
            $query->requireUser( $params['user'] );
        }
 
        if ( $params['excludeuser'] !== null ) {
            $query->excludeUser( $params['excludeuser'] );
        }
 
        /* Add the fields we're concerned with to our query. */
        $query->fields( [
            'rc_id',
            'rc_timestamp',
            'rc_namespace',
            'rc_title',
            'rc_cur_id',
            'rc_source',
            'rc_deleted'
        ] );
 
        /* Determine what properties we need to display. */
        if ( $params['prop'] !== null ) {
            if ( $this->fld_patrolled && !$user->useRCPatrol() && !$user->useNPPatrol() ) {
                $this->dieWithError( 'apierror-permissiondenied-patrolflag', 'permissiondenied' );
            }
 
            /* Add fields to our query if they are specified as a needed parameter. */
            if ( $this->fld_ids ) {
                $query->fields( [ 'rc_this_oldid', 'rc_last_oldid' ] );
            }
            if ( $this->fld_flags ) {
                $query->fields( [ 'rc_minor', 'rc_bot' ] );
            }
            if ( $this->fld_sizes ) {
                $query->fields( [ 'rc_old_len', 'rc_new_len' ] );
            }
            if ( $this->fld_patrolled ) {
                $query->fields( [ 'rc_patrolled', 'rc_log_type' ] );
            }
            if ( $this->fld_loginfo ) {
                $query->fields( [ 'rc_logid', 'rc_log_type', 'rc_log_action', 'rc_params' ] );
            }
            if ( $this->fld_redirect ) {
                $query->addRedirectField();
            }
        }
        if ( $resultPageSet && $params['generaterevisions'] ) {
            $query->fields( [ 'rc_this_oldid' ] );
        }
        if ( $this->fld_tags ) {
            $query->addChangeTagSummaryField();
        }
        if ( $this->fld_sha1 ) {
            $query->sha1Fields();
        }
        if ( $params['toponly'] ) {
            $query->requireLatest();
        }
        if ( $params['tag'] !== null ) {
            $query->requireChangeTags( [ $params['tag'] ] );
        }
 
        // Paranoia: avoid brute force searches (T19342)
        if ( $params['user'] !== null || $params['excludeuser'] !== null ) {
            $query->excludeDeletedUser();
        }
        if ( $this->getRequest()->getCheck( 'namespace' ) ) {
            $query->excludeDeletedLogAction();
        }
 
        if ( $this->fld_comment || $this->fld_parsedcomment ) {
            $query->commentFields();
        }
 
        if ( $params['slot'] !== null ) {
            // Only include changes that touch page content (i.e. RC_NEW, RC_EDIT)
            $sources = array_intersect( $sources,
                [ RecentChange::SRC_NEW, RecentChange::SRC_EDIT ] );
            $query->requireSlotChanged( $params['slot'] );
        }
 
        $query->requireSources( $sources )
            ->limit( $params['limit'] + 1 )
            ->maxExecutionTime( $this->getConfig()->get(
                MainConfigNames::MaxExecutionTimeForExpensiveQueries ) )
            ->caller( __METHOD__ );
 
        $hookData = [];
        if ( $this->getHookContainer()->isRegistered( 'ApiQueryBaseBeforeQuery' ) ) {
            $query->legacyMutator(
                function ( &$tables, &$fields, &$conds, &$options, &$join_conds ) use ( &$hookData ) {
                    $this->getHookRunner()->onApiQueryBaseBeforeQuery(
                        $this, $tables, $fields, $conds,
                        $options, $join_conds, $hookData );
                }
            );
        }
 
        $count = 0;
        /* Perform the actual query. */
        $res = $query->fetchResult()->getResultWrapper();
 
        $this->getHookRunner()->onApiQueryBaseAfterQuery( $this, $res, $hookData );
 
        // Do batch queries
        if ( $this->fld_title && $resultPageSet === null ) {
            $this->executeGenderCacheFromResultWrapper( $res, __METHOD__, 'rc' );
        }
        if ( $this->fld_parsedcomment ) {
            $this->formattedComments = $this->commentFormatter->formatItems(
                $this->commentFormatter->rows( $res )
                    ->indexField( 'rc_id' )
                    ->commentKey( 'rc_comment' )
                    ->namespaceField( 'rc_namespace' )
                    ->titleField( 'rc_title' )
            );
        }
 
        $revids = [];
        $titles = [];
 
        $result = $this->getResult();
 
        /* Iterate through the rows, adding data extracted from them to our query result. */
        foreach ( $res as $row ) {
            if ( $count === 0 && $resultPageSet !== null ) {
                // Set the non-continue since the list of recentchanges is
                // prone to having entries added at the start frequently.
                $this->getContinuationManager()->addGeneratorNonContinueParam(
                    $this, 'continue', "$row->rc_timestamp|$row->rc_id"
                );
            }
            if ( ++$count > $params['limit'] ) {
                // We've reached the one extra which shows that there are
                // additional pages to be had. Stop here...
                $this->setContinueEnumParameter( 'continue', "$row->rc_timestamp|$row->rc_id" );
                break;
            }
 
            if ( $resultPageSet === null ) {
                /* Extract the data from a single row. */
                $vals = $this->extractRowInfo( $row );
 
                /* Add that row's data to our final output. */
                $fit = $this->processRow( $row, $vals, $hookData ) &&
                    $result->addValue( [ 'query', $this->getModuleName() ], null, $vals );
                if ( !$fit ) {
                    $this->setContinueEnumParameter( 'continue', "$row->rc_timestamp|$row->rc_id" );
                    break;
                }
            } elseif ( $params['generaterevisions'] ) {
                $revid = (int)$row->rc_this_oldid;
                if ( $revid > 0 ) {
                    $revids[] = $revid;
                }
            } else {
                $titles[] = Title::makeTitle( $row->rc_namespace, $row->rc_title );
            }
        }
 
        if ( $resultPageSet === null ) {
            /* Format the result */
            $result->addIndexedTagName( [ 'query', $this->getModuleName() ], 'rc' );
        } elseif ( $params['generaterevisions'] ) {
            $resultPageSet->populateFromRevisionIDs( $revids );
        } else {
            $resultPageSet->populateFromTitles( $titles );
        }
    }
 
    public function extractRowInfo( $row ) {
        /* Determine the title of the page that has been changed. */
        $title = Title::makeTitle( $row->rc_namespace, $row->rc_title );
        $user = $this->getUser();
 
        /* Our output data. */
        $vals = [];
 
        $vals['type'] = $this->recentChangeLookup->convertSourceToType( $row->rc_source );
        $isLog = $row->rc_source === RecentChange::SRC_LOG;
 
        $anyHidden = false;
 
        /* Create a new entry in the result for the title. */
        if ( $this->fld_title || $this->fld_ids ) {
            if ( $isLog && ( $row->rc_deleted & LogPage::DELETED_ACTION ) ) {
                $vals['actionhidden'] = true;
                $anyHidden = true;
            }
            if ( !$isLog ||
                LogEventsList::userCanBitfield( $row->rc_deleted, LogPage::DELETED_ACTION, $user )
            ) {
                if ( $this->fld_title ) {
                    ApiQueryBase::addTitleInfo( $vals, $title );
                }
                if ( $this->fld_ids ) {
                    $vals['pageid'] = (int)$row->rc_cur_id;
                    $vals['revid'] = (int)$row->rc_this_oldid;
                    $vals['old_revid'] = (int)$row->rc_last_oldid;
                }
            }
        }
 
        if ( $this->fld_ids ) {
            $vals['rcid'] = (int)$row->rc_id;
        }
 
        /* Add user data and 'anon' flag, if user is anonymous. */
        if ( $this->fld_user || $this->fld_userid ) {
            if ( $row->rc_deleted & RevisionRecord::DELETED_USER ) {
                $vals['userhidden'] = true;
                $anyHidden = true;
            }
            if ( RevisionRecord::userCanBitfield( $row->rc_deleted, RevisionRecord::DELETED_USER, $user ) ) {
                if ( $this->fld_user ) {
                    $vals['user'] = $row->rc_user_text;
                }
 
                if ( $this->fld_userid ) {
                    $vals['userid'] = (int)$row->rc_user;
                }
 
                if ( isset( $row->rc_user_text ) && $this->userNameUtils->isTemp( $row->rc_user_text ) ) {
                    $vals['temp'] = true;
                }
 
                if ( !$row->rc_user ) {
                    $vals['anon'] = true;
                }
            }
        }
 
        /* Add flags, such as new, minor, bot. */
        if ( $this->fld_flags ) {
            $vals['bot'] = (bool)$row->rc_bot;
            $vals['new'] = $row->rc_source == RecentChange::SRC_NEW;
            $vals['minor'] = (bool)$row->rc_minor;
        }
 
        /* Add sizes of each revision. (Only available on 1.10+) */
        if ( $this->fld_sizes ) {
            $vals['oldlen'] = (int)$row->rc_old_len;
            $vals['newlen'] = (int)$row->rc_new_len;
        }
 
        /* Add the timestamp. */
        if ( $this->fld_timestamp ) {
            $vals['timestamp'] = wfTimestamp( TS::ISO_8601, $row->rc_timestamp );
        }
 
        /* Add edit summary / log summary. */
        if ( $this->fld_comment || $this->fld_parsedcomment ) {
            if ( $row->rc_deleted & RevisionRecord::DELETED_COMMENT ) {
                $vals['commenthidden'] = true;
                $anyHidden = true;
            }
            if ( RevisionRecord::userCanBitfield(
                $row->rc_deleted, RevisionRecord::DELETED_COMMENT, $user
            ) ) {
                if ( $this->fld_comment ) {
                    $vals['comment'] = $this->commentStore->getComment( 'rc_comment', $row )->text;
                }
 
                if ( $this->fld_parsedcomment ) {
                    $vals['parsedcomment'] = $this->formattedComments[$row->rc_id];
                }
            }
        }
 
        if ( $this->fld_redirect ) {
            $vals['redirect'] = (bool)$row->page_is_redirect;
        }
 
        /* Add the patrolled flag */
        if ( $this->fld_patrolled ) {
            $vals['patrolled'] = $row->rc_patrolled != RecentChange::PRC_UNPATROLLED;
            $vals['unpatrolled'] = ChangesList::isUnpatrolled( $row, $user );
            $vals['autopatrolled'] = $row->rc_patrolled == RecentChange::PRC_AUTOPATROLLED;
        }
 
        if ( $this->fld_loginfo && $row->rc_source == RecentChange::SRC_LOG ) {
            if ( $row->rc_deleted & LogPage::DELETED_ACTION ) {
                $vals['actionhidden'] = true;
                $anyHidden = true;
            }
            if ( LogEventsList::userCanBitfield( $row->rc_deleted, LogPage::DELETED_ACTION, $user ) ) {
                $vals['logid'] = (int)$row->rc_logid;
                $vals['logtype'] = $row->rc_log_type;
                $vals['logaction'] = $row->rc_log_action;
                $vals['logparams'] = $this->logFormatterFactory->newFromRow( $row )->formatParametersForApi();
            }
        }
 
        if ( $this->fld_tags ) {
            if ( $row->ts_tags ) {
                $tags = explode( ',', $row->ts_tags );
                ApiResult::setIndexedTagName( $tags, 'tag' );
                $vals['tags'] = $tags;
            } else {
                $vals['tags'] = [];
            }
        }
 
        if ( $this->fld_sha1 && $row->rev_slot_pairs !== null ) {
            if ( $row->rev_deleted & RevisionRecord::DELETED_TEXT ) {
                $vals['sha1hidden'] = true;
                $anyHidden = true;
            }
            if ( RevisionRecord::userCanBitfield(
                $row->rev_deleted, RevisionRecord::DELETED_TEXT, $user
            ) ) {
                $combinedBase36 = '';
                if ( $row->rev_slot_pairs !== '' ) {
                    $items = explode( ',', $row->rev_slot_pairs );
                    $slotHashes = [];
                    foreach ( $items as $item ) {
                        $parts = explode( ':', $item );
                        $slotHashes[$parts[0]] = $parts[1];
                    }
                    ksort( $slotHashes );
 
                    $accu = null;
                    foreach ( $slotHashes as $slotHash ) {
                        $accu = $accu === null
                            ? $slotHash
                            : SlotRecord::base36Sha1( $accu . $slotHash );
                    }
                    $combinedBase36 = $accu ?? SlotRecord::base36Sha1( '' );
                }
 
                $vals['sha1'] = $combinedBase36 !== ''
                    ? \Wikimedia\base_convert( $combinedBase36, 36, 16, 40 )
                    : '';
            }
        }
 
        if ( $anyHidden && ( $row->rc_deleted & RevisionRecord::DELETED_RESTRICTED ) ) {
            $vals['suppressed'] = true;
        }
 
        return $vals;
    }
 
    private function includesPatrollingFlags( array $flagsArray ) {
        return isset( $flagsArray['patrolled'] ) ||
            isset( $flagsArray['!patrolled'] ) ||
            isset( $flagsArray['unpatrolled'] ) ||
            isset( $flagsArray['autopatrolled'] ) ||
            isset( $flagsArray['!autopatrolled'] );
    }
 
    public function getCacheMode( $params ) {
        if ( isset( $params['show'] ) &&
            $this->includesPatrollingFlags( array_fill_keys( $params['show'], true ) )
        ) {
            return 'private';
        }
        if ( $this->userCanSeeRevDel() ) {
            return 'private';
        }
        if ( $params['prop'] !== null && in_array( 'parsedcomment', $params['prop'] ) ) {
            // MediaWiki\CommentFormatter\CommentFormatter::formatItems() calls wfMessage() among other things
            return 'anon-public-user-private';
        }
 
        return 'public';
    }
 
    public function getAllowedParams() {
        $slotRoles = $this->slotRoleRegistry->getKnownRoles();
        sort( $slotRoles, SORT_STRING );
 
        return [
            'start' => [
                ParamValidator::PARAM_TYPE => 'timestamp'
            ],
            'end' => [
                ParamValidator::PARAM_TYPE => 'timestamp'
            ],
            'dir' => [
                ParamValidator::PARAM_DEFAULT => 'older',
                ParamValidator::PARAM_TYPE => [
                    'newer',
                    'older'
                ],
                ApiBase::PARAM_HELP_MSG => 'api-help-param-direction',
                ApiBase::PARAM_HELP_MSG_PER_VALUE => [
                    'newer' => 'api-help-paramvalue-direction-newer',
                    'older' => 'api-help-paramvalue-direction-older',
                ],
            ],
            'namespace' => [
                ParamValidator::PARAM_ISMULTI => true,
                ParamValidator::PARAM_TYPE => 'namespace',
                NamespaceDef::PARAM_EXTRA_NAMESPACES => [ NS_MEDIA, NS_SPECIAL ],
            ],
            'user' => [
                ParamValidator::PARAM_TYPE => 'user',
                UserDef::PARAM_RETURN_OBJECT => true,
                UserDef::PARAM_ALLOWED_USER_TYPES => [ 'name', 'ip', 'temp', 'id', 'interwiki' ],
            ],
            'excludeuser' => [
                ParamValidator::PARAM_TYPE => 'user',
                UserDef::PARAM_RETURN_OBJECT => true,
                UserDef::PARAM_ALLOWED_USER_TYPES => [ 'name', 'ip', 'temp', 'id', 'interwiki' ],
            ],
            'tag' => null,
            'prop' => [
                ParamValidator::PARAM_ISMULTI => true,
                ParamValidator::PARAM_DEFAULT => 'title|timestamp|ids',
                ParamValidator::PARAM_TYPE => [
                    'user',
                    'userid',
                    'comment',
                    'parsedcomment',
                    'flags',
                    'timestamp',
                    'title',
                    'ids',
                    'sizes',
                    'redirect',
                    'patrolled',
                    'loginfo',
                    'tags',
                    'sha1',
                ],
                ApiBase::PARAM_HELP_MSG_PER_VALUE => [],
            ],
            'show' => [
                ParamValidator::PARAM_ISMULTI => true,
                ParamValidator::PARAM_TYPE => [
                    'minor',
                    '!minor',
                    'bot',
                    '!bot',
                    'anon',
                    '!anon',
                    'redirect',
                    '!redirect',
                    'patrolled',
                    '!patrolled',
                    'unpatrolled',
                    'autopatrolled',
                    '!autopatrolled',
                ]
            ],
            'limit' => [
                ParamValidator::PARAM_DEFAULT => 10,
                ParamValidator::PARAM_TYPE => 'limit',
                IntegerDef::PARAM_MIN => 1,
                IntegerDef::PARAM_MAX => ApiBase::LIMIT_BIG1,
                IntegerDef::PARAM_MAX2 => ApiBase::LIMIT_BIG2
            ],
            // TODO: deprecate and use rc_source directly, here and in the result
            'type' => [
                ParamValidator::PARAM_DEFAULT => 'edit|new|log|categorize',
                ParamValidator::PARAM_ISMULTI => true,
                ParamValidator::PARAM_TYPE => RecentChange::getChangeTypes()
            ],
            'toponly' => false,
            'title' => null,
            'continue' => [
                ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
            ],
            'generaterevisions' => false,
            'slot' => [
                ParamValidator::PARAM_TYPE => $slotRoles
            ],
        ];
    }
 
    protected function getExamplesMessages() {
        return [
            'action=query&list=recentchanges'
                => 'apihelp-query+recentchanges-example-simple',
            'action=query&generator=recentchanges&grcshow=!patrolled&prop=info'
                => 'apihelp-query+recentchanges-example-generator',
        ];
    }
 
    public function getHelpUrls() {
        return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Recentchanges';
    }
}
 
class_alias( ApiQueryRecentChanges::class, 'ApiQueryRecentChanges' );