<?php

/**
* @copyright Vertex. All rights reserved. https://www.vertexinc.com/
* @author Mediotype Development <diveinto@mediotype.com>
*/

namespace Vertex\Utility;

/**
* Create an instance of SoapClient
*
* @api
*/
class SoapClientFactory
{
/**
* Collection of alternative ciphers for legacy PHP TLS negotiation.
*
* @var string[]
*/
private $legacyCiphers = [
'DHE-RSA-AES256-SHA',
'DHE-DSS-AES256-SHA',
'AES256-SHA',
'KRB5-DES-CBC3-MD5',
'KRB5-DES-CBC3-SHA',
'EDH-RSA-DES-CBC3-SHA',
'EDH-DSS-DES-CBC3-SHA',
'DES-CBC3-SHA',
'DES-CBC3-MD5',
'DHE-RSA-AES128-SHA',
'DHE-DSS-AES128-SHA',
'AES128-SHA',
'RC2-CBC-MD5',
'KRB5-RC4-MD5',
'KRB5-RC4-SHA',
'RC4-SHA',
'RC4-MD5',
'RC4-MD5',
'KRB5-DES-CBC-MD5',
'KRB5-DES-CBC-SHA',
'EDH-RSA-DES-CBC-SHA',
'EDH-DSS-DES-CBC-SHA',
'DES-CBC-SHA',
'DES-CBC-MD5',
'EXP-KRB5-RC2-CBC-MD5',
'EXP-KRB5-DES-CBC-MD5',
'EXP-KRB5-RC2-CBC-SHA',
'EXP-KRB5-DES-CBC-SHA',
'EXP-EDH-RSA-DES-CBC-SHA',
'EXP-EDH-DSS-DES-CBC-SHA',
'EXP-DES-CBC-SHA',
'EXP-RC2-CBC-MD5',
'EXP-RC2-CBC-MD5',
'EXP-KRB5-RC4-MD5',
'EXP-KRB5-RC4-SHA',
'EXP-RC4-MD5',
'EXP-RC4-MD5',
];

/**
* Create an instance of SoapClient
*
* @param string $wsdl
* @param array $options
* @return \SoapClient
*/
public function create($wsdl, array $options = [])
{
$options = array_merge($this->getDefaultOptions(), $options ?: []);
return new \SoapClient($wsdl, $options);
}

/**
* Get Default SOAP options
*
* @return array
*/
public function getDefaultOptions()
{
return [
'trace' => true,
'soap_version' => SOAP_1_1,
'stream_context' => [
'ssl_method' => SOAP_SSL_METHOD_TLS,
'stream_context' => $this->getStreamContext(),
]
];
}

/**
* Generate a stream context for the client.
*
* @return resource
*/
private function getStreamContext()
{
if (version_compare(PHP_VERSION, '5.6') < 0) {
return stream_context_create(
[
'ssl' => [
'ciphers' => implode(':', $this->legacyCiphers),
],
]
);
}

return stream_context_create(
[
'ssl' => [
'crypto_method' => STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT,
'ciphers' => 'SHA2',
],
]
);
}
}