<?php

/**
 * webtrees: online genealogy
 * Copyright (C) 2026 webtrees development team
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <https://www.gnu.org/licenses/>.
 */

declare(strict_types=1);

namespace Fisharebest\Webtrees\Elements;

use Fisharebest\Webtrees\I18N;

use function strtoupper;

/**
 * <HIERARCHICAL_RELATIONSHIP>:= [POLI|RELI|GEOG|CULT]
 * Used to differentiate political (administrative), religious, geographical
 * or cultural associations. For the superior location object the details of
 * its type are defined by the <TYPE_OF_LOCATION> in its record.
 */
class HierarchicalRelationship extends AbstractElement
{
    /**
     * Convert a value to a canonical form.
     *
     * @param string $value
     *
     * @return string
     */
    public function canonical(string $value): string
    {
        return strtoupper(parent::canonical($value));
    }

    /**
     * A list of controlled values for this element
     *
     * @return array<int|string,string>
     */
    public function values(): array
    {
        $values = [
            ''     => '',
            'POLI' => /* I18N: Type of location hierarchy */ I18N::translate('political'),
            'RELI' => /* I18N: Type of location hierarchy */ I18N::translate('religious'),
            'GEOG' => /* I18N: Type of location hierarchy */ I18N::translate('geographic'),
            'CULT' => /* I18N: Type of location hierarchy */ I18N::translate('cultural'),
        ];

        uasort($values, I18N::comparator());

        return $values;
    }
}
