/**
* @param string $url
* @param array $params
*
* @return array
*/
private function discoverLinks($url, array $params = array())
{
$request = new Psr7\Request('get', $url);
$response = $this->client->send($request);
$xpath = isset($params['format']) ? self::xpathForFormat($params['format']) : self::LINK_ANY_XPATH;
$links = self::responseBodyOEmbedLinks($response, $xpath);
if (!empty($links) && isset($params['format'])) {
$links = array_filter($links, function ($link) use($params) {
return $this->negotiator->getFormat($link[1]) !== null && $params['format'] === $this->negotiator->getFormat($link[1]);
});
}
return $links;
}
/**
* @param array $params
* @param ResponseInterface $response
*
* @return null|string
*
* @throws UnknownFormatException
*/
private function getFormat(array $params, ResponseInterface $response)
{
if ($response->hasHeader('content-type')) {
$header = $response->getHeaderLine('content-type');
$format = $this->negotiator->getFormat($header);
}
if (isset($params['format'])) {
$format = $params['format'];
}
if (!isset($format)) {
throw new UnknownFormatException('Unable to figure out the format');
}
return $format;
}
/**
* Assign the format to use to the _api_format Request attribute.
*
* @param GetResponseEvent $event
*/
public function onKernelRequest(GetResponseEvent $event)
{
$request = $event->getRequest();
if (!$request->attributes->get('_resource_type')) {
return;
}
// Use the Symfony request format if available and applicable
$format = $request->getRequestFormat(null);
if (null === $format || !in_array($format, $this->supportedFormats)) {
if (null !== ($accept = $request->headers->get('Accept'))) {
// Try to guess the best format to use
$format = $this->formatNegotiator->getBestFormat($accept, $this->supportedFormats);
}
}
$request->attributes->set('_api_format', $format ?: $this->supportedFormats[0]);
}
/**
* Decodes the request body
*
* @param Request $request The request
*
* @return void
*/
protected function decodeBody(Request $request)
{
if (in_array($request->getMethod(), ['POST', 'PUT', 'PATCH', 'DELETE'])) {
$contentType = $request->headers->get('Content-Type', '');
$format = $this->formatNegotiator->getFormat($contentType);
if (!$this->contentDecoder->supportsDecoding($format)) {
return;
}
$content = $request->getContent();
if (!empty($content)) {
try {
$data = $this->contentDecoder->decode($content, $format);
} catch (Exception $exception) {
$data = null;
}
if (is_array($data)) {
$request->request->replace($data);
} else {
$message = sprintf('Invalid %s message received', $format);
throw new BadRequestHttpException($message);
}
}
}
}
