$refreshrequested = required_param('refresh_requested', PARAM_INT);
$start = required_param('start', PARAM_INT);
$total = required_param('total', PARAM_INT);
$parts = $turnitintooltwoassignment->get_parts();
$updatefromtii = $refreshrequested || $turnitintooltwoassignment->turnitintooltwo->autoupdates == 1 ? 1 : 0;
if ($updatefromtii && $start == 0) {
$turnitintooltwoassignment->get_submission_ids_from_tii($parts[$partid]);
$total = $_SESSION["TiiSubmissions"][$partid];
$_SESSION["TiiSubmissionsRefreshed"][$partid] = time();
}
if ($start < $total && $updatefromtii) {
$turnitintooltwoassignment->refresh_submissions($parts[$partid], $start);
}
$PAGE->set_context(context_module::instance($cm->id));
$turnitintooltwoview = new turnitintooltwo_view();
$return["aaData"] = $turnitintooltwoview->get_submission_inbox($cm, $turnitintooltwoassignment, $parts, $partid, $start);
$return["end"] = $start + TURNITINTOOLTWO_SUBMISSION_GET_LIMIT;
$return["total"] = $_SESSION["num_submissions"][$partid];
// Remove any leftover submissions from session
if ($return["end"] >= $return["total"]) {
unset($_SESSION["submissions"][$partid]);
}
} else {
$return["aaData"] = '';
}
echo json_encode($return);
break;
case "refresh_user_messages":
$assignmentid = required_param('assignment', PARAM_INT);
$turnitintooltwoassignment = new turnitintooltwo_assignment($assignmentid);
$cm = get_coursemodule_from_instance("turnitintooltwo", $assignmentid);
