// handle the request authn if needed
iclicker_handle_authn($cntlr);
if ("GET" == $cntlr->method) {
if ("courses" == $pathSeg0) {
// handle retrieving the list of courses for an instructor
$user_id = iclicker_get_and_check_current_user("access instructor courses listings");
$output = iclicker_service::encode_courses($user_id);
} else {
if ("students" == $pathSeg0) {
// handle retrieval of the list of students
$course_id = $pathSeg1;
if ($course_id == null) {
throw new InvalidArgumentException("valid course_id must be included in the URL /students/{course_id}");
}
iclicker_get_and_check_current_user("access student enrollment listings");
$output = iclicker_service::encode_enrollments($course_id);
} else {
// UNKNOWN
$valid = false;
$output = "Unknown path ({$cntlr->path}) specified for method GET";
$status = 404;
//NOT_FOUND
}
}
} else {
// POST
if ("gradebook" == $pathSeg0) {
// handle retrieval of the list of students
$course_id = $pathSeg1;
if ($course_id == null) {
throw new InvalidArgumentException("valid course_id must be included in the URL /gradebook/{course_id}");
