<?php

/*
 * Copyright (C) 2026 Deciso B.V.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

namespace OPNsense\Firewall\FieldTypes;

use OPNsense\Base\FieldTypes\OptionField;
use OPNsense\Core\Config;

class SNatModeField extends OptionField
{
    public const DEFAULT_MODE = 'automatic';
    public const MODES = ['automatic', 'hybrid', 'advanced', 'disabled'];

    public static function isValidMode($mode): bool
    {
        return in_array($mode, self::MODES, true);
    }

    protected function actionPostLoadingEvent()
    {
        $mode = (string)(Config::getInstance()->object()->nat?->outbound?->mode ?? '');

        if (!self::isValidMode($mode)) {
            $mode = self::DEFAULT_MODE;
        }

        $this->setValue($mode);

        return parent::actionPostLoadingEvent();
    }
}
