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

declare(strict_types=1);

namespace Magento\Framework\View\Element\UiComponent\DataProvider;

use Magento\Framework\Phrase;

/**
 * Sanitizes data received from UI data providers.
 */
class Sanitizer
{
    /**
     * Extract rendering config from given UI data.
     *
     * @param array $data
     * @return bool|array
     */
    private function extractConfig(array $data)
    {
        /** @var array|bool $config */
        $config = [];
        if (array_key_exists('__disableTmpl', $data)) {
            //UI data provider has explicitly provided rendering config.
            $config = $data['__disableTmpl'];
            unset($data['__disableTmpl']);
        }

        return $config;
    }

    /**
     * Sanitizes data from a UI data provider.
     *
     * @param array $data
     * @return array
     */
    public function sanitize(array $data): array
    {
        $config = $this->extractConfig($data);
        $toProcess = [];
        array_walk(
            $data,
            function ($datum, string $key) use (&$config, &$toProcess) : void {
                if (is_array($datum)) {
                    //Each array must have it's own __disableTmpl property
                    $toProcess[$key] = $datum;
                } elseif ((
                        !is_bool($config) && !array_key_exists($key, $config)
                    )
                    && (is_string($datum) || $datum instanceof Phrase)
                    && preg_match('/\$\{.+\}/', (string)$datum)
                ) {
                    //Templating is not disabled for all properties or for this property specifically
                    //Property is a string that contains template syntax so we are disabling it's rendering
                    $config[$key] = true;
                }
            }
        );
        if ($toProcess) {
            //Processing sub-arrays
            $data = array_replace($data, array_map([$this, 'sanitize'], $toProcess));
        }
        if ($config !== []) {
            //Some properties require rendering configuration.
            $data['__disableTmpl'] = $config;
        }

        return $data;
    }

    /**
     * Sanitize a component's metadata.
     *
     * Will sanitize full component's metadata as well as metadata of it's child components.
     *
     * @param array $meta
     * @return array
     */
    public function sanitizeComponentMetadata(array $meta): array
    {
        if (array_key_exists('arguments', $meta)
            && is_array($meta['arguments'])
            && array_key_exists('data', $meta['arguments'])
            && is_array($meta['arguments']['data'])
            && array_key_exists('config', $meta['arguments']['data'])
            && is_array($meta['arguments']['data']['config'])
        ) {
            $meta['arguments']['data']['config'] = $this->sanitize($meta['arguments']['data']['config']);
        }
        if (array_key_exists('children', $meta) && is_array($meta['children'])) {
            $meta['children'] = array_map([$this, 'sanitizeComponentMetadata'], $meta['children']);
        }

        return $meta;
    }
}