/**
* Determine the preferred content type for the current request
*
* @param ServerRequestInterface $request
*
* @return string
*/
private function type(ServerRequestInterface $request)
{
$accept = $request->getHeaderLine('Accept');
$priorities = $this->preferences->toArray();
if (!empty($accept)) {
$preferred = $this->negotiator->getBest($accept, array_keys($priorities));
}
if (!empty($preferred)) {
return $preferred->getValue();
}
return key($priorities);
}
