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<?php
namespace Bitrix\Pull\Auth;
use Bitrix\Main;
use Bitrix\Pull\Config;
final class Jwt
{
public const DEFAULT_TTL = 12 * 3600;
/**
* Returns array with a pair of values: signed JWT token; token expiration timestamp
*/
public static function create(array $channels = [], int $userId = 0, array $options = []): array
{
if (empty($channels) && $userId === 0)
{
throw new Main\ArgumentException("Either channel list or user id must be specified");
}
$ttl = is_integer($options['ttl']) && $options['ttl'] > 0 ? $options['ttl'] : self::DEFAULT_TTL;
$time = time();
$exp = $time + $ttl;
$data = [
'iss' => (string)Config::getHostId(),
'iat' => $time,
'exp' => $exp,
];
if ($userId > 0)
{
$data['sub'] = (string)$userId;
}
if (!empty($channels))
{
$data['chan'] = implode(',', $channels);
}
$secret = Config::getSignatureKey();
return [Main\Web\JWT::encode($data, $secret), $exp];
}
public static function decode(string $jwt, string $secret)
{
return Main\Web\JWT::decode($jwt, $secret);
}
}