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<?php
/**
 * Clean up broken page links when somebody turns on $wgCapitalLinks.
 *
 * Usage: php cleanupCaps.php [--dry-run]
 * Options:
 *   --dry-run  don't actually try moving them
 *
 * Copyright © 2005 Brion Vibber <brion@pobox.com>
 * https://www.mediawiki.org/
 *
 * 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
 * @author Brion Vibber <brion at pobox.com>
 * @ingroup Maintenance
 */
use MediaWiki\MediaWikiServices;
require_once __DIR__ . '/cleanupTable.inc';
/**
 * Maintenance script to clean up broken page links when somebody turns
 * on or off $wgCapitalLinks.
 *
 * @ingroup Maintenance
 */
class CleanupCaps extends TableCleanup {
    private $user;
    private $namespace;
    public function __construct() {
        parent::__construct();
        $this->addDescription( 'Script to cleanup capitalization' );
        $this->addOption( 'namespace', 'Namespace number to run caps cleanup on', false, true );
    }
    public function execute() {
        $this->user = User::newSystemUser( 'Conversion script', [ 'steal' => true ] );
        $this->namespace = intval( $this->getOption( 'namespace', 0 ) );
        if (
            MediaWikiServices::getInstance()->getNamespaceInfo()->
                isCapitalized( $this->namespace )
        ) {
            $this->output( "Will be moving pages to first letter capitalized titles" );
            $callback = 'processRowToUppercase';
        } else {
            $this->output( "Will be moving pages to first letter lowercase titles" );
            $callback = 'processRowToLowercase';
        }
        $this->dryrun = $this->hasOption( 'dry-run' );
        $this->runTable( [
            'table' => 'page',
            'conds' => [ 'page_namespace' => $this->namespace ],
            'index' => 'page_id',
            'callback' => $callback ] );
    }
    protected function processRowToUppercase( $row ) {
        $current = Title::makeTitle( $row->page_namespace, $row->page_title );
        $display = $current->getPrefixedText();
        $lower = $row->page_title;
        $upper = MediaWikiServices::getInstance()->getContentLanguage()->ucfirst( $row->page_title );
        if ( $upper == $lower ) {
            $this->output( "\"$display\" already uppercase.\n" );
            return $this->progress( 0 );
        }
        $target = Title::makeTitle( $row->page_namespace, $upper );
        if ( $target->exists() ) {
            // Prefix "CapsCleanup" to bypass the conflict
            $target = Title::newFromText( 'CapsCleanup/' . $display );
        }
        $ok = $this->movePage(
            $current,
            $target,
            'Converting page title to first-letter uppercase',
            false
        );
        if ( $ok ) {
            $this->progress( 1 );
            if ( $row->page_namespace == $this->namespace ) {
                $talk = $target->getTalkPage();
                $row->page_namespace = $talk->getNamespace();
                if ( $talk->exists() ) {
                    return $this->processRowToUppercase( $row );
                }
            }
        }
        return $this->progress( 0 );
    }
    protected function processRowToLowercase( $row ) {
        $current = Title::makeTitle( $row->page_namespace, $row->page_title );
        $display = $current->getPrefixedText();
        $upper = $row->page_title;
        $lower = MediaWikiServices::getInstance()->getContentLanguage()->lcfirst( $row->page_title );
        if ( $upper == $lower ) {
            $this->output( "\"$display\" already lowercase.\n" );
            return $this->progress( 0 );
        }
        $target = Title::makeTitle( $row->page_namespace, $lower );
        if ( $target->exists() ) {
            $targetDisplay = $target->getPrefixedText();
            $this->output( "\"$display\" skipped; \"$targetDisplay\" already exists\n" );
            return $this->progress( 0 );
        }
        $ok = $this->movePage( $current, $target, 'Converting page titles to lowercase', true );
        if ( $ok === true ) {
            $this->progress( 1 );
            if ( $row->page_namespace == $this->namespace ) {
                $talk = $target->getTalkPage();
                $row->page_namespace = $talk->getNamespace();
                if ( $talk->exists() ) {
                    return $this->processRowToLowercase( $row );
                }
            }
        }
        return $this->progress( 0 );
    }
    /**
     * @param Title $current
     * @param Title $target
     * @param string $reason
     * @param bool $createRedirect
     * @return bool Success
     */
    private function movePage( Title $current, Title $target, $reason, $createRedirect ) {
        $display = $current->getPrefixedText();
        $targetDisplay = $target->getPrefixedText();
        if ( $this->dryrun ) {
            $this->output( "\"$display\" -> \"$targetDisplay\": DRY RUN, NOT MOVED\n" );
            $ok = 'OK';
        } else {
            $mp = MediaWikiServices::getInstance()->getMovePageFactory()
                ->newMovePage( $current, $target );
            $status = $mp->move( $this->user, $reason, $createRedirect );
            $ok = $status->isOK() ? 'OK' : $status->getMessage( false, false, 'en' )->text();
            $this->output( "\"$display\" -> \"$targetDisplay\": $ok\n" );
        }
        return $ok === 'OK';
    }
}
$maintClass = CleanupCaps::class;
require_once RUN_MAINTENANCE_IF_MAIN;