<?php

namespace EP\EpTheme\DataProcessing;

use TYPO3\CMS\Core\Utility\GeneralUtility;
use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
use TYPO3\CMS\Frontend\ContentObject\DataProcessorInterface;
use TYPO3\CMS\Frontend\Resource\FileCollector;

class TeaserImageProcessor implements DataProcessorInterface
{

    /**
     * @param ContentObjectRenderer $cObj
     * @param array $contentObjectConfiguration
     * @param array $processorConfiguration
     * @param array $processedData
     *
     * @return array
     */
    public function process(
        ContentObjectRenderer $cObj,
        array $contentObjectConfiguration,
        array $processorConfiguration,
        array $processedData
    ) {
        $imageFileCollector = GeneralUtility::makeInstance(FileCollector::class);
        $imageFileCollector->addFilesFromRelation('tt_content', 'assets', $cObj->data);
        $processedData['teaserImage'] = reset($imageFileCollector->getFiles());

        return $processedData;
    }

}