$tripId = '';
if (isset($_GET['tripId'])) {
$tripId = $_GET['tripId'];
}
$referenceId = '';
if (isset($_GET['referenceId'])) {
$referenceId = $_GET['referenceId'];
}
$userId = '';
if (isset($_GET['userId'])) {
$userId = $_GET['userId'];
}
if ($tripId === '' || $referenceId === '') {
$response = errorResponse(RESPONSE_BAD_REQUEST);
} else {
if (!$auth->canGetFeedback($tripId, $referenceId)) {
$response = errorResponse(RESPONSE_UNAUTHORIZED);
} else {
if ($userId === '') {
// Request for a list
$list = Feedback::getList($tripId, $referenceId);
$response = successResponse();
$response['tripId'] = $tripId;
$response['referenceId'] = $referenceId;
$response['list'] = $list;
} else {
$object = new Feedback($tripId, $referenceId, $userId);
if ($object->getCreated() === null) {
$response = errorResponse(RESPONSE_NOT_FOUND);
} else {
$response = successResponse();
