public function addAuthHeaders(BeforeEvent $event)
{
/*
* Get Consumer ID and Private Key from auth and then unset it
*/
$auth = $event->getClient()->getDefaultOption('auth');
if ($auth === null) {
throw new \Exception('Http client is missing \'auth\' parameters', 1466965269);
}
$consumerId = $auth[0];
$privateKey = $auth[1];
$event->getClient()->setDefaultOption('auth', null);
/*
* Get Request URL, method, and timestamp to calculate signature
*/
$requestUrl = $event->getRequest()->getUrl();
//decode url back to normal to nextCursor issue. automatic url encoding
$requestUrl = rawurldecode($requestUrl);
$event->getRequest()->setUrl($requestUrl);
$requestMethod = $event->getRequest()->getMethod();
$timestamp = Utils::getMilliseconds();
$signature = Signature::calculateSignature($consumerId, $privateKey, $requestUrl, $requestMethod, $timestamp);
/*
* Add required headers to request
*/
$headers = ['WM_SVC.NAME' => 'Walmart Marketplace', 'WM_QOS.CORRELATION_ID' => base64_encode(Random::string(16)), 'WM_SEC.TIMESTAMP' => $timestamp, 'WM_SEC.AUTH_SIGNATURE' => $signature, 'WM_CONSUMER.ID' => $consumerId];
$currentHeaders = $event->getRequest()->getHeaders();
unset($currentHeaders['Authorization']);
$updatedHeaders = array_merge($currentHeaders, $headers);
$event->getRequest()->setHeaders($updatedHeaders);
}