ds-site/Classes/EventListener/AddFurtherMetadataToFile.php

<?php

declare(strict_types=1);

/*
 * Copyright (C) 2020 Daniel Siepmann <coding@daniel-siepmann.de>
 *
 * 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.
 */

namespace DanielSiepmann\DsSite\EventListener;

use TYPO3\CMS\Core\Resource\Event\EnrichFileMetaDataEvent;
use TYPO3\CMS\Core\Resource\FileReference;
use TYPO3\CMS\Frontend\Resource\FileCollector;

class AddFurtherMetadataToFile
{
    public function __construct(
        private FileCollector $fileCollector
    ) {
    }

    private function resolvePoster(array $record): ?FileReference
    {
        $this->fileCollector->addFilesFromRelation(
            'sys_file_metadata',
            'poster',
            $record
        );

        $files = $this->fileCollector->getFiles();

        return $files[0] ?? null;
    }

    public function __invoke(EnrichFileMetaDataEvent $event): void
    {
        $record = $event->getRecord();

        $record['poster'] = $this->resolvePoster($record);

        $event->setRecord($record);
    }
}