<?php
/**
 * 2007-2019 PrestaShop and Contributors
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Open Software License (OSL 3.0)
 * that is bundled with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * https://opensource.org/licenses/OSL-3.0
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@prestashop.com so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade PrestaShop to newer
 * versions in the future. If you wish to customize PrestaShop for your
 * needs please refer to https://www.prestashop.com for more information.
 *
 * @author    PrestaShop SA <contact@prestashop.com>
 * @copyright 2007-2019 PrestaShop SA and Contributors
 * @license   https://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
 * International Registered Trademark & Property of PrestaShop SA
 */

namespace PrestaShop\PrestaShop\Adapter\Product;

use Symfony\Component\HttpFoundation\Request;

/**
 * Extracted from Product Controller, used to cleanup the request.
 * For internal use only.
 */
final class FilterCategoriesRequestPurifier
{
    const CATEGORY = 'filter_category';

    /**
     * Changes the filter category values in case it is not numeric or signed.
     *
     * @param Request $request
     *
     * @return Request
     */
    public function purify(Request $request)
    {
        if ($request->isMethod('POST')) {
            $value = $request->request->get(self::CATEGORY);
            if (null !== $value && (!is_numeric($value) || $value < 0)) {
                $request->request->set(self::CATEGORY, '');
            }
        }

        return $request;
    }
}