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<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */

declare(strict_types=1);

namespace Magento\PageBuilder\Ui\Component\Listing\Columns;

use Magento\Framework\View\Element\UiComponentFactory;
use Magento\Framework\View\Element\UiComponent\ContextInterface;
use Magento\Ui\Component\Listing\Columns\Column;
use Magento\Framework\UrlInterface;

/**
 * Display Template preview image within grid
 */
class PreviewImage extends Column
{
    const NAME = 'preview_image';

    const ALT_FIELD = 'name';

    /**
     * @var UrlInterface
     */
    private $urlBuilder;

    /**
     * @param ContextInterface $context
     * @param UiComponentFactory $uiComponentFactory
     * @param UrlInterface $urlBuilder
     * @param array $components
     * @param array $data
     */
    public function __construct(
        ContextInterface $context,
        UiComponentFactory $uiComponentFactory,
        UrlInterface $urlBuilder,
        array $components = [],
        array $data = []
    ) {
        parent::__construct($context, $uiComponentFactory, $components, $data);
        $this->urlBuilder = $urlBuilder;
    }

    /**
     * Prepare Data Source
     *
     * @param array $dataSource
     * @return array
     */
    public function prepareDataSource(array $dataSource)
    {
        if (isset($dataSource['data']['items'])) {
            $fieldName = $this->getData('name');
            foreach ($dataSource['data']['items'] as & $item) {
                $previewImage = $item[$fieldName];
                $imageSrc = $this->urlBuilder->getBaseUrl(['_type' => UrlInterface::URL_TYPE_MEDIA]) . $previewImage;
                $item[$fieldName . '_src'] = str_replace('.jpg', '-thumb.jpg', $imageSrc);
                $item[$fieldName . '_alt'] = $this->getAlt($item);
                $item[$fieldName . '_link'] = null;
                $item[$fieldName . '_orig_src'] = $imageSrc;
            }
        }

        return $dataSource;
    }

    /**
     * Get Alt
     *
     * @param array $row
     *
     * @return null|string
     */
    private function getAlt($row)
    {
        $altField = $this->getData('config/altField') ?: self::ALT_FIELD;
        return $row[$altField] ?? null;
    }
}