<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Ldap\Adapter\ExtLdap;

use Symfony\Component\Ldap\Exception\LdapException;

/**
 * A class representing the Ldap extension's options, which can be used with
 * ldap_set_option or ldap_get_option.
 *
 * @author Charles Sarrazin <charles@sarraz.in>
 *
 * @internal
 */
final class ConnectionOptions
{
    public const API_INFO = 0x00;
    public const DEREF = 0x02;
    public const SIZELIMIT = 0x03;
    public const TIMELIMIT = 0x04;
    public const REFERRALS = 0x08;
    public const RESTART = 0x09;
    public const PROTOCOL_VERSION = 0x11;
    public const SERVER_CONTROLS = 0x12;
    public const CLIENT_CONTROLS = 0x13;
    public const API_FEATURE_INFO = 0x15;
    public const HOST_NAME = 0x30;
    public const ERROR_NUMBER = 0x31;
    public const ERROR_STRING = 0x32;
    public const MATCHED_DN = 0x33;
    public const DEBUG_LEVEL = 0x5001;
    public const TIMEOUT = 0x5002;
    public const NETWORK_TIMEOUT = 0x5005;
    public const X_TLS_CACERTFILE = 0x6002;
    public const X_TLS_CACERTDIR = 0x6003;
    public const X_TLS_CERTFILE = 0x6004;
    public const X_TLS_CRL_ALL = 0x02;
    public const X_TLS_CRL_NONE = 0x00;
    public const X_TLS_CRL_PEER = 0x01;
    public const X_TLS_KEYFILE = 0x6005;
    public const X_TLS_REQUIRE_CERT = 0x6006;
    public const X_TLS_PROTOCOL_MIN = 0x6007;
    public const X_TLS_CIPHER_SUITE = 0x6008;
    public const X_TLS_RANDOM_FILE = 0x6009;
    public const X_TLS_CRLFILE = 0x6010;
    public const X_TLS_PACKAGE = 0x6011;
    public const X_TLS_CRLCHECK = 0x600B;
    public const X_TLS_DHFILE = 0x600E;
    public const X_SASL_MECH = 0x6100;
    public const X_SASL_REALM = 0x6101;
    public const X_SASL_AUTHCID = 0x6102;
    public const X_SASL_AUTHZID = 0x6103;
    public const X_KEEPALIVE_IDLE = 0x6300;
    public const X_KEEPALIVE_PROBES = 0x6301;
    public const X_KEEPALIVE_INTERVAL = 0x6302;

    public static function getOptionName(string $name): string
    {
        return sprintf('%s::%s', self::class, strtoupper($name));
    }

    /**
     * Fetches an option's corresponding constant value from an option name.
     * The option name can either be in snake or camel case.
     *
     * @throws LdapException
     */
    public static function getOption(string $name): int
    {
        // Convert
        $constantName = self::getOptionName($name);

        if (!\defined($constantName)) {
            throw new LdapException(sprintf('Unknown option "%s".', $name));
        }

        return \constant($constantName);
    }

    public static function isOption(string $name): bool
    {
        return \defined(self::getOptionName($name));
    }
}
