/**
* This file responds to ajax requests
*
*/
if (!isset($_REQUEST['cmd'])) {
echo '{"result" : 0, "message" : "Command Not Set"}';
exit;
}
$cmd = $_REQUEST['cmd'];
switch ($cmd) {
case 1:
addCourse();
break;
case 2:
updateCourse();
break;
case 3:
deleteCourse();
break;
case 4:
viewAllCourses();
break;
default:
echo '{"result" : 0, "message" : "Unknown Command"}';
break;
}
/*
*
*/
function addCourse()
$assignment = $assignments[$assignmentKey];
if ($assignment == null) {
$assignment = new SampleAssignment();
$assignment->type = $_GET['assignment_type'];
$assignment->number = $_GET['assignment_number'];
}
if ($_GET['file_type'] == 'assignment') {
$assignment->assignmentFileName = $fileName;
} else {
if ($_GET['file_type'] == 'A') {
$assignment->sampleFileNames[0] = $fileName;
} else {
if ($_GET['file_type'] == 'B') {
$assignment->sampleFileNames[1] = $fileName;
} else {
if ($_GET['file_type'] == 'C') {
$assignment->sampleFileNames[2] = $fileName;
}
}
}
}
$assignments[$assignmentKey] = $assignment;
$course->sampleAssignments = $assignments;
updateCourse($course);
// relative to prototype/course.php
$msg = "../data/courses/" . $_GET['course'] . "/" . $fileName;
}
echo "{";
echo "error: '" . $error . "',\n";
echo "msg: '" . $msg . "'\n";
echo "}";
function addCourse($course, $progID)
{
global $PROGRAM;
$path = $PROGRAM . $progID . '.json';
if (!file_exists($path)) {
throw new Exception($path . ' does not exist!');
}
$f = fopen($path, 'r+');
if ($f) {
flock($f, LOCK_EX);
$courseIDs = json_decode(fread($f, filesize($path)), true);
if (!is_null($courseIDs)) {
if (!in_array($course->courseID, $courseIDs)) {
$courseIDs[] = $course->courseID;
} else {
// Samik: Assuming that any course added to a program will have it required/elective
// otherwise you will have to "writeCourse" before returning.
return 1;
}
fseek($f, 0);
ftruncate($f, 0);
fwrite($f, json_encode($courseIDs));
fclose($f);
// if the course already exists, just set reqForProgram
$existingCourse = getCourseForID($course->courseID);
if (!is_null($existingCourse)) {
$existingCourse->reqForProgram[$progID] = $course->reqForProgram[$progID];
// Samik: adding to update course, when course is added to new programs
writeCourse($existingCourse);
return 2;
}
// adds course file to courses/<courseID>/<courseID>.json
updateCourse($course, true);
}
} else {
throw new Exception('Could not open ' . $path . ' for writing');
}
return 0;
}
