typo3-13/packages/ep_theme/Classes/Preview/ContentPreviewRenderer.php

<?php

declare(strict_types=1);

namespace EP\EpTheme\Preview;

use TYPO3\CMS\Backend\Preview\StandardContentPreviewRenderer;
use TYPO3\CMS\Backend\Utility\BackendUtility;
use TYPO3\CMS\Backend\View\BackendLayout\Grid\GridColumnItem;
use TYPO3\CMS\Core\Database\ConnectionPool;
use TYPO3\CMS\Core\Resource\FileRepository;
use TYPO3\CMS\Core\Service\FlexFormService;
use TYPO3\CMS\Core\Utility\GeneralUtility;
use TYPO3\CMS\Core\View\ViewFactoryData;
use TYPO3\CMS\Core\View\ViewFactoryInterface;

/**
 * Page module previews of the theme's content elements, rendered from
 * Templates/PreviewRenderer/<CType>.html as the TYPO3 10 drawItem hooks did
 * (Classes/Hooks/PageLayoutView in a46918d), with the same template variables.
 * Registered per CType in TCA (['types'][<CType>]['previewRenderer']).
 */
class ContentPreviewRenderer extends StandardContentPreviewRenderer
{
    /**
     * CType => [field holding the related uid, related table, template variable]
     */
    private const array RELATED_RECORDS = [
        'teaser_country' => ['tx_eptheme_context_country', 'tx_epproducts_domain_model_country', 'country'],
        'teaser_region' => ['tx_eptheme_context_region', 'tx_epproducts_domain_model_region', 'region'],
        'teaser_city' => ['tx_eptheme_context_city', 'tx_epproducts_domain_model_city', 'city'],
        'teaser_hotel' => ['tx_eptheme_context_hotel', 'tx_epproducts_domain_model_hotel', 'hotel'],
        'teaser_concept' => ['tx_eptheme_context_concept', 'tx_epproducts_domain_model_concept', 'concept'],
        'teaser_product' => ['tx_eptheme_context_product', 'tx_epproducts_domain_model_product', 'product'],
        'teaser_booking_link' => ['tx_eptheme_context_product', 'tx_epproducts_domain_model_product', 'product'],
    ];

    public function renderPageModulePreviewContent(GridColumnItem $item): string
    {
        $row = $item->getRecord();
        $cType = (string)$row['CType'];
        $template = GeneralUtility::getFileAbsFileName(
            'EXT:ep_theme/Resources/Private/Templates/PreviewRenderer/' . GeneralUtility::underscoredToUpperCamelCase($cType) . '.html'
        );
        if (!is_file($template)) {
            return parent::renderPageModulePreviewContent($item);
        }

        $images = $this->getImages((int)$row['uid'], 'tt_content', 'image');
        $variables = [
            'data' => $row,
            'flexForm' => GeneralUtility::makeInstance(FlexFormService::class)->convertFlexFormContentToArray((string)($row['pi_flexform'] ?? '')),
            'firstImage' => $images[0] ?? null,
            'images' => $images,
        ];
        $variables = array_replace($variables, $this->getAssignmentsForTemplate($cType, $row));

        $view = GeneralUtility::makeInstance(ViewFactoryInterface::class)->create(new ViewFactoryData(
            templatePathAndFilename: $template,
            request: $item->getContext()->getCurrentRequest(),
        ));
        $view->assignMultiple($variables);
        return $view->render();
    }

    private function getAssignmentsForTemplate(string $cType, array $row): array
    {
        if (isset(self::RELATED_RECORDS[$cType])) {
            [$field, $table, $name] = self::RELATED_RECORDS[$cType];
            $uid = (int)($row[$field] ?? 0);
            $assignments = [
                'images' => $this->getImages($uid, $table, 'teaser_images'),
                $name => $uid > 0 ? BackendUtility::getRecord($table, $uid) : null,
            ];
            if ($cType === 'teaser_product') {
                $hotelUid = (int)($row['tx_eptheme_context_hotel'] ?? 0);
                $assignments['hotel'] = $hotelUid > 0 ? BackendUtility::getRecord('tx_epproducts_domain_model_hotel', $hotelUid) : null;
            }
            return $assignments;
        }

        switch ($cType) {
            case 'gmap':
                $regionUid = (int)($row['tx_eptheme_context_region'] ?? 0);
                $content = $regionUid > 0
                    ? BackendUtility::getRecord('tx_epproducts_domain_model_region', $regionUid)
                    : BackendUtility::getRecord('tx_epproducts_domain_model_hotel', (int)($row['tx_eptheme_context_hotel'] ?? 0));
                return ['content' => $content];
            case 'disrupter':
                // tx_eptheme_disrupter is an MM relation; the field itself only holds the count
                $queryBuilder = GeneralUtility::makeInstance(ConnectionPool::class)->getQueryBuilderForTable('tx_eptheme_ttcontent_tx_eptheme_disrupter_mm');
                $disrupterUid = (int)$queryBuilder->select('uid_foreign')
                    ->from('tx_eptheme_ttcontent_tx_eptheme_disrupter_mm')
                    ->where($queryBuilder->expr()->eq('uid_local', $queryBuilder->createNamedParameter((int)$row['uid'])))
                    ->orderBy('sorting')
                    ->setMaxResults(1)
                    ->executeQuery()
                    ->fetchOne();
                return ['content' => $disrupterUid > 0 ? BackendUtility::getRecord('tx_eptheme_domain_model_disrupter', $disrupterUid) : null];
            case 'lineup':
                $queryBuilder = GeneralUtility::makeInstance(ConnectionPool::class)->getQueryBuilderForTable('tx_eptheme_domain_model_lineup');
                $rows = $queryBuilder->select('*')
                    ->from('tx_eptheme_domain_model_lineup')
                    ->where($queryBuilder->expr()->eq('tt_content', $queryBuilder->createNamedParameter((int)$row['uid'])))
                    ->orderBy('sorting')
                    ->executeQuery()
                    ->fetchAllAssociative();
                return ['rows' => $rows];
        }
        return [];
    }

    private function getImages(int $uid, string $table, string $field): array
    {
        if ($uid <= 0) {
            return [];
        }
        return GeneralUtility::makeInstance(FileRepository::class)->findByRelation($table, $field, $uid);
    }
}