<?php

declare(strict_types=1);

namespace SimPod\SmsManager;

use Psr\Http\Message\ResponseInterface;

use SimpleXMLElement;

use SimPod\SmsManager\Exception\XmlParsingFailed;

use Throwable;

use function libxml_disable_entity_loader;

use function libxml_use_internal_errors;

use const LIBXML_NONET;

class Parser

{

/**

* @param mixed[] $config

*/

public static function parseXmlResponseBody(?ResponseInterface $response, array $config = []) : SimpleXMLElement

{

$disableEntities = libxml_disable_entity_loader();

$internalErrors = libxml_use_internal_errors(true);

try {

// Allow XML to be retrieved even if there is no response body

$xml = new SimpleXMLElement(

$response === null ? '<root />' : (string) $response->getBody(),

$config['libxml_options'] ?? LIBXML_NONET,

false,

$config['ns'] ?? '',

$config['ns_is_prefix'] ?? false

);

libxml_disable_entity_loader($disableEntities);

libxml_use_internal_errors($internalErrors);

} catch (Throwable $exception) {

libxml_disable_entity_loader($disableEntities);

libxml_use_internal_errors($internalErrors);

throw new XmlParsingFailed(

'Unable to parse response body into XML: ' . $exception->getMessage(),

0,

$exception

);

}

return $xml;

}

}