Mini Shell

<?php
/**
 * 2007-2018 PrestaShop
 *
 * 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 http://www.prestashop.com for more information.
 *
 * @author    PrestaShop SA <contact@prestashop.com>
 * @copyright 2007-2018 PrestaShop SA
 * @license   https://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
 * International Registered Trademark & Property of PrestaShop SA
 */

/**
 * Class AddressChecksumCore
 */
class AddressChecksumCore implements ChecksumInterface
{
    const SEPARATOR = '_';

    /**
     * Generate a checksum
     *
     * @param Address $address
     *
     * @return string SHA1 checksum for the Address
     */
    public function generateChecksum($address)
    {
        if (!$address->id) {
            return sha1('No address set');
        }

        $uniqId = '';
        $fields = $address->getFields();
        foreach ($fields as $name => $value) {
            $uniqId .= $value.self::SEPARATOR;
        }
        $uniqId = rtrim($uniqId, self::SEPARATOR);

        return sha1($uniqId);
    }
}