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<?php
/**
 * Check images to see if they exist, are readable, etc.
 *
 * 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 Maintenance
 */
use MediaWiki\MediaWikiServices;
require_once __DIR__ . '/Maintenance.php';
/**
 * Maintenance script to check images to see if they exist, are readable, etc.
 *
 * @ingroup Maintenance
 */
class CheckImages extends Maintenance {
    public function __construct() {
        parent::__construct();
        $this->addDescription( 'Check images to see if they exist, are readable, etc' );
        $this->setBatchSize( 1000 );
    }
    public function execute() {
        $start = '';
        $dbr = $this->getDB( DB_REPLICA );
        $numImages = 0;
        $numGood = 0;
        $repo = MediaWikiServices::getInstance()->getRepoGroup()->getLocalRepo();
        $fileQuery = LocalFile::getQueryInfo();
        do {
            $res = $dbr->select( $fileQuery['tables'], $fileQuery['fields'],
                [ 'img_name > ' . $dbr->addQuotes( $start ) ],
                __METHOD__, [ 'LIMIT' => $this->getBatchSize() ], $fileQuery['joins'] );
            foreach ( $res as $row ) {
                $numImages++;
                $start = $row->img_name;
                $file = $repo->newFileFromRow( $row );
                $path = $file->getPath();
                if ( !$path ) {
                    $this->output( "{$row->img_name}: not locally accessible\n" );
                    continue;
                }
                $size = $repo->getFileSize( $file->getPath() );
                if ( $size === false ) {
                    $this->output( "{$row->img_name}: missing\n" );
                    continue;
                }
                if ( $size == 0 && $row->img_size != 0 ) {
                    $this->output( "{$row->img_name}: truncated, was {$row->img_size}\n" );
                    continue;
                }
                if ( $size != $row->img_size ) {
                    $this->output( "{$row->img_name}: size mismatch DB={$row->img_size}"
                        . "actual={$size}\n" );
                    continue;
                }
                $numGood++;
            }
        } while ( $res->numRows() );
        $this->output( "Good images: $numGood/$numImages\n" );
    }
}
$maintClass = CheckImages::class;
require_once RUN_MAINTENANCE_IF_MAIN;