MergeHistoryPager.php

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<?php
namespace MediaWiki\Pager;
 
use MediaWiki\Cache\LinkBatchFactory;
use MediaWiki\ChangeTags\ChangeTags;
use MediaWiki\ChangeTags\ChangeTagsStore;
use MediaWiki\CommentFormatter\CommentFormatter;
use MediaWiki\Context\IContextSource;
use MediaWiki\Html\Html;
use MediaWiki\Linker\Linker;
use MediaWiki\Linker\LinkRenderer;
use MediaWiki\Page\PageIdentity;
use MediaWiki\Revision\RevisionRecord;
use MediaWiki\Revision\RevisionStore;
use MediaWiki\User\UserIdentityValue;
use Wikimedia\Rdbms\IConnectionProvider;
 
class MergeHistoryPager extends ReverseChronologicalPager {
 
    public $mGroupByDate = true;
 
    public array $mConds;
    private int $articleID;
    private string $maxTimestamp;
    private int $maxRevId;
    private string $mergePointTimestamp;
 
    public array $prevId;
 
    private LinkBatchFactory $linkBatchFactory;
    private RevisionStore $revisionStore;
    private CommentFormatter $commentFormatter;
    private ChangeTagsStore $changeTagsStore;
 
    public function __construct(
        IContextSource $context,
        LinkRenderer $linkRenderer,
        LinkBatchFactory $linkBatchFactory,
        IConnectionProvider $dbProvider,
        RevisionStore $revisionStore,
        CommentFormatter $commentFormatter,
        ChangeTagsStore $changeTagsStore,
        array $conds,
        PageIdentity $source,
        PageIdentity $dest,
        string $mergePointTimestamp
    ) {
        $this->mConds = $conds;
        $this->articleID = $source->getId();
 
        $dbr = $dbProvider->getReplicaDatabase();
        $maxtimestamp = $dbr->newSelectQueryBuilder()
            ->select( 'MIN(rev_timestamp)' )
            ->from( 'revision' )
            ->where( [ 'rev_page' => $dest->getId() ] )
            ->caller( __METHOD__ )->fetchField();
        $maxRevId = $dbr->newSelectQueryBuilder()
            ->select( "MIN(rev_id)" )
            ->from( 'revision' )
            ->where( [ 'rev_page' => $dest->getId() ] )
            ->where( [ 'rev_timestamp' => $maxtimestamp ] )
            ->caller( __METHOD__ )->fetchField();
        $this->maxTimestamp = $maxtimestamp;
        $this->maxRevId = (int)$maxRevId;
        $this->mergePointTimestamp = $mergePointTimestamp;
 
        // Set database before parent constructor to avoid setting it there
        $this->mDb = $dbr;
        parent::__construct( $context, $linkRenderer );
        $this->linkBatchFactory = $linkBatchFactory;
        $this->revisionStore = $revisionStore;
        $this->commentFormatter = $commentFormatter;
        $this->changeTagsStore = $changeTagsStore;
    }
 
    protected function doBatchLookups() {
        # Do a link batch query
        $this->mResult->seek( 0 );
        $batch = $this->linkBatchFactory->newLinkBatch()->setCaller( __METHOD__ );
        # Give some pointers to make (last) links
        $this->prevId = [];
        $rev_id = null;
        foreach ( $this->mResult as $row ) {
            $batch->addUser( new UserIdentityValue( (int)$row->rev_user, $row->rev_user_text ) );
 
            if ( $rev_id !== null ) {
                if ( $rev_id > $row->rev_id ) {
                    $this->prevId[$rev_id] = $row->rev_id;
                } elseif ( $rev_id < $row->rev_id ) {
                    $this->prevId[$row->rev_id] = $rev_id;
                }
            }
 
            $rev_id = $row->rev_id;
        }
 
        $batch->execute();
        $this->mResult->seek( 0 );
    }
 
    protected function getStartBody() {
        return "<section class='mw-pager-body'>\n";
    }
 
    protected function getEndBody() {
        return "</section>\n";
    }
 
    public function formatRow( $row ) {
        $revRecord = $this->revisionStore->newRevisionFromRow( $row );
 
        $linkRenderer = $this->getLinkRenderer();
 
        $stxt = '';
        $last = $this->msg( 'last' )->escaped();
 
        $ts = wfTimestamp( TS_MW, $row->rev_timestamp );
        $tsWithId = $ts . "|" . $row->rev_id;
        $checkBox = Html::radio(
            'mergepoint',
            $this->mergePointTimestamp === $ts || $this->mergePointTimestamp === $tsWithId,
            [ 'value' => $tsWithId ]
        );
 
        $user = $this->getUser();
 
        $pageLink = $linkRenderer->makeKnownLink(
            $revRecord->getPageAsLinkTarget(),
            $this->getLanguage()->userTimeAndDate( $ts, $user ),
            [],
            [ 'oldid' => $revRecord->getId() ]
        );
        if ( $revRecord->isDeleted( RevisionRecord::DELETED_TEXT ) ) {
            $class = Linker::getRevisionDeletedClass( $revRecord );
            $pageLink = '<span class=" ' . $class . '">' . $pageLink . '</span>';
        }
 
        # Last link
        if ( !$revRecord->userCan( RevisionRecord::DELETED_TEXT, $this->getAuthority() ) ) {
            $last = $this->msg( 'last' )->escaped();
        } elseif ( isset( $this->prevId[$row->rev_id] ) ) {
            $last = $linkRenderer->makeKnownLink(
                $revRecord->getPageAsLinkTarget(),
                $this->msg( 'last' )->text(),
                [],
                [
                    'diff' => $row->rev_id,
                    'oldid' => $this->prevId[$row->rev_id]
                ]
            );
        }
 
        $userLink = Linker::revUserTools( $revRecord );
 
        $size = $row->rev_len;
        if ( $size !== null ) {
            $stxt = Linker::formatRevisionSize( $size );
        }
        $comment = $this->commentFormatter->formatRevision( $revRecord, $user );
 
        // Tags, if any.
        [ $tagSummary, $classes ] = ChangeTags::formatSummaryRow(
            $row->ts_tags,
            'mergehistory',
            $this->getContext()
        );
 
        return Html::rawElement( 'li', $classes,
            $this->msg( 'mergehistory-revisionrow' )
                ->rawParams( $checkBox, $last, $pageLink, $userLink, $stxt, $comment, $tagSummary )->escaped() );
    }
 
    public function getQueryInfo() {
        $dbr = $this->getDatabase();
        $queryBuilder = $this->revisionStore->newSelectQueryBuilder( $dbr )
            ->joinComment()
            ->joinPage()
            ->joinUser()
            ->where( $this->mConds )
            ->andWhere( [
                'rev_page' => $this->articleID,
                $dbr->buildComparison( "<",
                    [
                        "rev_timestamp" => $this->maxTimestamp,
                        "rev_id" => $this->maxRevId
                    ]
                )
            ] );
        $this->changeTagsStore->modifyDisplayQueryBuilder( $queryBuilder, 'revision' );
 
        return $queryBuilder->getQueryInfo( 'join_conds' );
    }
 
    public function getIndexField() {
        return [ [ 'rev_timestamp', 'rev_id' ] ];
    }
}
 
class_alias( MergeHistoryPager::class, 'MergeHistoryPager' );