<?php
/**
 * Copyright since 2007 PrestaShop SA and Contributors
 * PrestaShop is an International Registered Trademark & Property of PrestaShop SA
 *
 * 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.md.
 * 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://devdocs.prestashop.com/ for more information.
 *
 * @author    PrestaShop SA and Contributors <contact@prestashop.com>
 * @copyright Since 2007 PrestaShop SA and Contributors
 * @license   https://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
 */

declare(strict_types=1);

namespace PrestaShop\PrestaShop\Core\Util;

class InternationalizedDomainNameConverter
{
    /**
     * Convert the host part of the email from punycode to utf8 (e.g,. email@xn--e1aybc.xn--p1ai -> email@тест.рф)
     *
     * @param string $email
     *
     * @return string
     */
    public function emailToUtf8(string $email): string
    {
        $parts = explode('@', $email);
        if (count($parts) !== 2) {
            return $email;
        }

        if (defined('INTL_IDNA_VARIANT_UTS46')) {
            return $parts[0] . '@' . idn_to_utf8($parts[1], 0, INTL_IDNA_VARIANT_UTS46);
        }

        if (defined('INTL_IDNA_VARIANT_2003')) {
            return $parts[0] . '@' . idn_to_utf8($parts[1], 0, INTL_IDNA_VARIANT_2003);
        }

        return $parts[0] . '@' . idn_to_utf8($parts[1]);
    }
}