/**
* Displays a list of courses
*
* @return void
*/
public function displayTask()
{
$course = Course::getInstance(Request::getVar('course', ''));
$offering = $course->offering(Request::getVar('offering', ''));
// Ensure the course exists
if (!$course->exists() || !$offering->exists()) {
App::redirect(Route::url('index.php?option=' . $this->_option . '&controller=courses'), Lang::txt('COM_COURSES_ERROR_COURSE_OR_OFFERING_NOT_FOUND'), 'error');
return;
}
// Ensure specified user is enrolled in the course
//$student = $offering->member(User::get('id'));
$student = Member::getInstance(User::get('id'), $course->get('id'), $offering->get('id'), null, 1);
if (!$student->exists()) {
App::redirect(Route::url('index.php?option=' . $this->_option . '&controller=courses'), Lang::txt('COM_COURSES_ERROR_STUDENT_RECORD_NOT_FOUND'), 'error');
return;
}
$certificate = $course->certificate();
if (!$certificate->exists() || !$certificate->hasFile()) {
App::redirect(Route::url('index.php?option=' . $this->_option . '&controller=courses'), Lang::txt('COM_COURSES_ERROR_NO_CERTIFICATE_FOR_COURSE'), 'error');
return;
}
// Path and file name
$dir = PATH_APP . DS . 'site' . DS . 'courses' . DS . 'certificates';
$file = $dir . DS . 'certificate_' . $course->get('id') . '_' . $offering->get('id') . '_' . User::get('id') . '.pdf';
// If the file exists and we want to force regenerate it
if (is_file($file) && Request::getInt('regenerate', 0)) {
if (!Filesystem::delete($file)) {
throw new Exception(Lang::txt('UNABLE_TO_DELETE_FILE'), 500);
}
}
// Does the file exist already?
if (!is_file($file)) {
// Create the upload directory if needed
if (!is_dir($dir)) {
if (!Filesystem::makeDirectory($dir)) {
throw new Exception(Lang::txt('COM_COURSES_ERROR_FAILED_TO_CREATE_DIRECTORY'), 500);
}
}
$certificate->render(User::getRoot(), $file);
}
// If file exists
if (is_file($file)) {
$student->token();
// Serve up the file
$xserver = new Server();
$xserver->filename($file);
$xserver->serve_attachment($file);
// Firefox and Chrome fail if served inline
exit;
}
// Output failure message
$this->view->display();
}
/**
* Up
**/
public function up()
{
if (!$this->db->tableHasField('#__courses_members', 'token')) {
$query = "ALTER TABLE `#__courses_members` ADD `token` VARCHAR(23) NOT NULL DEFAULT '';";
$this->db->setQuery($query);
$this->db->query();
$path = PATH_APP . DS . 'site' . DS . 'courses' . DS . 'certificates';
if (is_dir($path)) {
require_once PATH_CORE . DS . 'components' . DS . 'com_courses' . DS . 'models' . DS . 'course.php';
// Loop through all files and separate them into arrays of images, folders, and other
$dirIterator = new DirectoryIterator($path);
foreach ($dirIterator as $file) {
if ($file->isDot()) {
continue;
}
if ($file->isDir()) {
continue;
}
if ($file->isFile()) {
$name = $file->getFilename();
if ('cvs' == strtolower($name) || '.svn' == strtolower($name)) {
continue;
}
$bits = explode('_', $name);
if (count($bits) < 4) {
continue;
}
$course = $bits[1];
$offering = $bits[2];
$user = strstr($bits[3], '.', true);
$member = \Components\Courses\Models\Member::getInstance($user, $course, $offering, null);
$member->token();
}
}
}
}
}
/**
* Remove one or more user IDs or usernames to the managers list
*
* @param array $value List of IDs or usernames
* @return void
*/
public function remove($data = array())
{
if (!is_array($data)) {
$data = array($data);
}
if (!$this->get('course_id')) {
require_once __DIR__ . DS . 'offering.php';
$offering = Offering::getInstance($this->get('offering_id'));
$this->set('course_id', $offering->get('course_id'));
}
foreach ($data as $result) {
$user_id = $this->_userId($result);
$model = Member::getInstance($user_id, $this->get('course_id'), $this->get('offering_id'), $this->get('id'));
if (!$model->exists()) {
$this->setError(Lang::txt('Entry for user #%s, course #%s, offering #%s, section #%s not found.', $user_id, $this->get('course_id'), $this->get('offering_id'), $this->get('id')));
continue;
}
if (!$model->delete()) {
$this->setError($model->getError());
continue;
}
if (isset($this->_members[$user_id])) {
unset($this->_members[$user_id]);
}
}
}
/**
* Remove one or more users from the course manager list
*
* @return void
*/
public function updateTask()
{
// Check for request forgeries
Request::checkToken();
// Incoming member ID
$id = Request::getInt('offering', 0);
if (!$id) {
$this->setError(Lang::txt('COM_COURSES_ERROR_NO_ID'));
$this->displayTask();
return;
}
$section = Request::getInt('section', 0);
$model = \Components\Courses\Models\Offering::getInstance($id);
if ($section) {
$model->section($section);
}
$entries = Request::getVar('entries', array(0), 'post');
foreach ($entries as $key => $data) {
// Retrieve user's account info
$member = \Components\Courses\Models\Member::getInstance($data['id'], null, null, null);
if ($member->get('role_id') == $data['role_id']) {
continue;
}
$member->set('role_id', $data['role_id']);
if (!$member->store()) {
$this->setError($member->getError());
}
}
// Push through to the hosts view
$this->displayTask($model);
}
/**
* Passport badges. Placeholder for now.
*
* @apiMethod POST
* @apiUri /courses/passport/badge
* @apiParameter {
* "name": "action",
* "description": "Badge action",
* "type": "string",
* "required": true,
* "default": null
* }
* @apiParameter {
* "name": "badge_id",
* "description": "Passport badge ID",
* "type": "integer",
* "required": true,
* "default": null
* }
* @apiParameter {
* "name": "user_email",
* "description": "Email address to which the badge was asserted",
* "type": "string",
* "required": true,
* "default": null
* }
* @return void
*/
public function badgeTask()
{
// Require authentication and authorization
$this->authorizeOrFail();
$action = Request::getVar('action', '');
$badge_id = Request::getVar('badge_id', '');
$user_email = Request::getVar('user_email', '');
if (empty($action)) {
App::abort(400, 'Please provide action');
}
if ($action != 'accept' && $action != 'deny') {
App::abort(400, 'Bad action. Must be either accept or deny');
}
if (empty($badge_id)) {
App::abort(400, 'Please provide badge ID');
}
if (empty($user_email)) {
App::abort(400, 'Please provide user email');
}
// Find user by email
$user = User::oneByEmail($user_email);
if (!$user->get('id')) {
App::abort(404, 'User was not found');
}
$user_id = $user->get('id');
// Get section from provider badge id
$section_badge = \Components\Courses\Models\Section\Badge::loadByProviderBadgeId($badge_id);
// Check if there is a match
if (!($section_id = $section_badge->get('section_id'))) {
App::abort(400, 'No matching badge found');
}
// Get member id via user id and section id
$member = \Components\Courses\Models\Member::getInstance($user_id, 0, 0, $section_id);
// Check if there is a match
if (!$member->get('id')) {
App::abort(400, 'Matching course member not found');
}
// Now actually load the badge
$member_badge = \Components\Courses\Models\MemberBadge::loadByMemberId($member->get('id'));
// Check if there is a match
if (!$member_badge->get('id')) {
App::abort(400, 'This member does not have a matching badge entry');
}
$now = Date::toSql();
$member_badge->set('action', $action);
$member_badge->set('action_on', $now);
$member_badge->store();
// Return message
$this->send('Passport data saved.');
}
/**
* Processes grade save from unity app
*
* @apiMethod POST
* @apiUri /courses/unity/save
* @apiParameter {
* "name": "referrer",
* "description": "Host page",
* "type": "string",
* "required": false,
* "default": "$_SERVER['HTTP_REFERER']"
* }
* @apiParameter {
* "name": "payload",
* "description": "Score notes/content",
* "type": "string",
* "required": true,
* "default": null
* }
* @return void
*/
public function saveTask()
{
// Require authentication and authorization
$this->authorizeOrFail();
$user_id = App::get('authn')['user_id'];
// Parse some things out of the referer
$referer = !empty($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : Request::getVar('referrer');
preg_match('/\\/asset\\/([[:digit:]]*)/', $referer, $matches);
if (!($asset_id = $matches[1])) {
App::abort(400, 'Failed to get asset ID');
}
// Get course info...this seems a little wonky
preg_match('/\\/courses\\/([[:alnum:]\\-\\_]*)\\/([[:alnum:]\\:\\-\\_]*)/', $referer, $matches);
$course_alias = $matches[1];
$offering_alias = $matches[2];
$section_alias = null;
if (strpos($offering_alias, ":")) {
$parts = explode(":", $offering_alias);
$offering_alias = $parts[0];
$section_alias = $parts[1];
}
$course = Course::getInstance($course_alias);
$course->offering($offering_alias);
$course->offering()->section($section_alias);
$section_id = $course->offering()->section()->get('id');
$member = Member::getInstance($user_id, 0, 0, $section_id);
if (!($member_id = $member->get('id'))) {
App::abort(500, 'Failed to get course member ID');
}
if (!($data = Request::getVar('payload', false))) {
App::abort(400, 'Missing payload');
}
// Get the key and IV - Trim the first xx characters from the payload for IV
$key = $course->config()->get('unity_key', 0);
$iv = substr($data, 0, 32);
$data = substr($data, 32);
$message = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $key, base64_decode($data), MCRYPT_MODE_CBC, $iv);
$message = trim($message);
$message = json_decode($message);
if (!$message || !is_object($message)) {
App::abort(500, 'Failed to decode message');
}
// Get timestamp
$now = Date::toSql();
// Save the unity details
$unity = new AssetUnity($this->db);
$unity->set('member_id', $member_id);
$unity->set('asset_id', $asset_id);
$unity->set('created', $now);
$unity->set('passed', $message->passed ? 1 : 0);
$unity->set('details', $message->details);
if (!$unity->store()) {
App::abort(500, $unity->getError());
}
// Now set/update the gradebook item
$gradebook = new GradeBook($this->db);
$gradebook->loadByUserAndAssetId($member_id, $asset_id);
// Score is either 100 or 0
$score = $message->passed ? 100 : 0;
// See if gradebook entry already exists
if ($gradebook->get('id')) {
// Entry does exist, see if current score is better than previous score
if ($score > $gradebook->get('score')) {
$gradebook->set('score', $score);
$gradebook->set('score_recorded', Date::toSql());
if (!$gradebook->store()) {
App::abort(500, $gradebook->getError());
}
}
} else {
$gradebook->set('member_id', $member_id);
$gradebook->set('score', $score);
$gradebook->set('scope', 'asset');
$gradebook->set('scope_id', $asset_id);
$gradebook->set('score_recorded', Date::toSql());
if (!$gradebook->store()) {
App::abort(500, $gradebook->getError());
}
}
// Return message
$this->send(['success' => true]);
}
/**
* Add one or more user IDs or usernames to the managers list
*
* @param array $value List of IDs or usernames
* @return void
*/
public function add($data = array(), $role_id = 'student')
{
if (!is_array($data)) {
$data = array($data);
}
$role = new Tables\Role($this->_db);
$role->load($role_id);
if (is_string($role_id)) {
$role_id = $role->get('id');
}
foreach ($data as $result) {
$user_id = (int) $this->_userId($result);
$model = Member::getInstance($user_id, $this->get('course_id'), $this->get('id'), $this->section()->get('id'));
$model->set('user_id', $user_id);
$model->set('course_id', $this->get('course_id'));
$model->set('offering_id', $this->get('id'));
$model->set('section_id', $this->section()->get('id'));
$model->set('role_id', $role_id);
if ($role->get('alias') == 'student') {
$model->set('student', 1);
}
if (!$model->store()) {
$this->setError($model->getError());
continue;
}
$this->_managers[$user_id] = $model;
}
}
/**
* Saves data to the database
*
* @return void
*/
public function saveTask($redirect = true)
{
// Check for request forgeries
Request::checkToken();
// Incoming
$fields = Request::getVar('fields', array(), 'post');
if (strstr($fields['user_id'], ',')) {
$user_ids = explode(',', $fields['user_id']);
$user_ids = array_map('trim', $user_ids);
} else {
$user_ids = array($fields['user_id']);
}
$offering = Request::getInt('offering', 0);
if (!$offering && isset($fields['offering_id'])) {
$offering = $fields['offering_id'];
}
$offeringObj = \Components\Courses\Models\Offering::getInstance($offering);
$c = 0;
foreach ($user_ids as $user_id) {
if (!is_int($user_id)) {
$user = User::getInstance($user_id);
if (!is_object($user)) {
\Notify::error(Lang::txt('COM_COURSES_ERROR_USER_NOTFOUND') . ' ' . $user_id);
$this->editTask();
return;
}
$fields['user_id'] = $user->get('id');
} else {
$fields['user_id'] = $user_id;
}
// Instantiate the model
$fields['course_id'] = $offeringObj->get('course_id');
//$section_id = $offeringObj->section()->get('id');
//$model = \Components\Courses\Models\Member::getInstance($fields['user_id'], $fields['course_id'], $offering, $section_id);
$model = \Components\Courses\Models\Member::getInstance($fields['user_id'], $fields['course_id'], null, null);
// Is there an existing record and are they a student?
if ($model->exists() && !$model->get('student')) {
\Notify::error(Lang::txt('COM_COURSES_ERROR_ALREADY_COURSE_MANAGER', $user_id));
continue;
}
// If the section is the same
if ($model->exists() && $model->get('section_id') == $fields['section_id']) {
\Notify::warning(Lang::txt('COM_COURSES_ERROR_ALREADY_STUDENT', $user_id));
continue;
}
// Ensure it's a new record as the check above
// could pull a record for another section
$model->set('id', null);
// Safe to proceed...
// Bind posted data
if (!$model->bind($fields)) {
\Notify::error($model->getError());
$this->editTask($model);
return;
}
// Store data
if (!$model->store()) {
\Notify::error($model->getError());
$this->editTask($model);
return;
}
}
if (count($user_ids) > 1) {
$redirect = true;
}
// Are we redirecting?
if ($redirect) {
// Output messsage and redirect
App::redirect(Route::url('index.php?option=' . $this->_option . '&controller=' . $this->_controller . '&offering=' . $fields['offering_id'] . '§ion=' . $fields['section_id'], false), $c > 0 ? Lang::txt('COM_COURSES_STUDENTS_SAVED', $c) : null);
return;
}
// Display edit form with posted data
$this->editTask($model);
}
