/**
* @param ClientInterface $client
* @param GiropayTransactionStatusRequest $giropayRequest
* @return RequestInterface
*/
protected function buildTransactionStatusRequest(ClientInterface $client, GiropayTransactionStatusRequest $giropayRequest)
{
$requestArray = array();
$requestArray['merchantId'] = $this->getMerchantId();
$requestArray['projectId'] = $this->getProjectId();
if ($giropayRequest->getReference() == "") {
throw new InvalidArgumentException("Field reference is required");
}
$requestArray['reference'] = $giropayRequest->getReference();
//this works because the hash list in PHP has a sort order (we get the values out in the order we added them)
$sortedValuesString = implode('', array_values($requestArray));
$requestArray['hash'] = $this->getHMACMD5Hash($this->getSecret(), $sortedValuesString);
$request = $client->createRequest("POST", "https://payment.girosolution.de/girocheckout/api/v2/transaction/status", ['body' => $requestArray]);
return $request;
}