<?php

/*
 * This file is part of Respect/Validation.
 *
 * (c) Alexandre Gomes Gaigalas <alexandre@gaigalas.net>
 *
 * For the full copyright and license information, please view the "LICENSE.md"
 * file that was distributed with this source code.
 */

declare(strict_types=1);

namespace Respect\Validation\Rules\Locale;

use Respect\Validation\Rules\AbstractSearcher;

/**
 * Validates whether an input is subdivision code of Switzerland or not.
 *
 * ISO 3166-1 alpha-2: CH
 *
 * @see http://www.geonames.org/CH/administrative-division-switzerland.html
 *
 * @author Henrique Moody <henriquemoody@gmail.com>
 */
final class ChSubdivisionCode extends AbstractSearcher
{
    /**
     * {@inheritdoc}
     */
    protected function getDataSource(): array
    {
        return [
            'AG', // Aargau
            'AI', // Appenzell Innerhoden
            'AR', // Appenzell Ausserrhoden
            'BE', // Bern
            'BL', // Basel-Landschaft
            'BS', // Basel-Stadt
            'FR', // Fribourg
            'GE', // Geneva
            'GL', // Glarus
            'GR', // Graubunden
            'JU', // Jura
            'LU', // Lucerne
            'NE', // Neuchâtel
            'NW', // Nidwalden
            'OW', // Obwalden
            'SG', // St. Gallen
            'SH', // Schaffhausen
            'SO', // Solothurn
            'SZ', // Schwyz
            'TG', // Thurgau
            'TI', // Ticino
            'UR', // Uri
            'VD', // Vaud
            'VS', // Valais
            'ZG', // Zug
            'ZH', // Zurich
        ];
    }
}