/**
* Track video viewing progress
*
* @return void
*/
public function trackingTask()
{
// Include need media tracking library
require_once PATH_CORE . DS . 'components' . DS . 'com_resources' . DS . 'tables' . DS . 'mediatracking.php';
require_once PATH_CORE . DS . 'components' . DS . 'com_resources' . DS . 'tables' . DS . 'mediatrackingdetailed.php';
// Instantiate objects
$database = \App::get('db');
$session = \App::get('session');
// Get request vars
$time = Request::getVar('time', 0);
$duration = Request::getVar('duration', 0);
$event = Request::getVar('event', 'update');
$resourceid = Request::getVar('resourceid', 0);
$detailedId = Request::getVar('detailedTrackingId', 0);
$ipAddress = $_SERVER['REMOTE_ADDR'];
// Check for asset id
if (!$resourceid) {
echo 'Unable to find resource identifier.';
return;
}
// Instantiate new media tracking object
$mediaTracking = new MediaTracking($database);
$mediaTrackingDetailed = new MediaTrackingDetailed($database);
// Load tracking information for user for this resource
$trackingInformation = $mediaTracking->getTrackingInformationForUserAndResource(User::get('id'), $resourceid, 'course');
$trackingInformationDetailed = $mediaTrackingDetailed->loadByDetailId($detailedId);
// Are we creating a new tracking record
if (!is_object($trackingInformation)) {
$trackingInformation = new stdClass();
$trackingInformation->user_id = User::get('id');
$trackingInformation->session_id = $session->getId();
$trackingInformation->ip_address = $ipAddress;
$trackingInformation->object_id = $resourceid;
$trackingInformation->object_type = 'course';
$trackingInformation->object_duration = $duration;
$trackingInformation->current_position = $time;
$trackingInformation->farthest_position = $time;
$trackingInformation->current_position_timestamp = Date::toSql();
$trackingInformation->farthest_position_timestamp = Date::toSql();
$trackingInformation->completed = 0;
$trackingInformation->total_views = 1;
$trackingInformation->total_viewing_time = 0;
} else {
// Get the amount of video watched from last tracking event
$time_viewed = (int) $time - (int) $trackingInformation->current_position;
// If we have a positive value and its less then our ten second threshold,
// add viewing time to total watched time
if ($time_viewed < 10 && $time_viewed > 0) {
$trackingInformation->total_viewing_time += $time_viewed;
}
// Set the new current position
$trackingInformation->current_position = $time;
$trackingInformation->current_position_timestamp = Date::toSql();
// Set the object duration
if ($duration > 0) {
$trackingInformation->object_duration = $duration;
}
// Check to see if we need to set a new farthest position
if ($trackingInformation->current_position > $trackingInformation->farthest_position) {
$trackingInformation->farthest_position = $time;
$trackingInformation->farthest_position_timestamp = Date::toSql();
}
// If event type is start, means we need to increment view count
if ($event == 'start' || $event == 'replay') {
$trackingInformation->total_views++;
}
// If event type is end, we need to increment completed count
if ($event == 'ended') {
$trackingInformation->completed++;
}
}
// Save detailed tracking info
if ($event == 'start' || !$trackingInformationDetailed) {
$trackingInformationDetailed = new stdClass();
$trackingInformationDetailed->user_id = User::get('id');
$trackingInformationDetailed->session_id = $session->getId();
$trackingInformationDetailed->ip_address = $ipAddress;
$trackingInformationDetailed->object_id = $resourceid;
$trackingInformationDetailed->object_type = 'course';
$trackingInformationDetailed->object_duration = $duration;
$trackingInformationDetailed->current_position = $time;
$trackingInformationDetailed->farthest_position = $time;
$trackingInformationDetailed->current_position_timestamp = Date::toSql();
$trackingInformationDetailed->farthest_position_timestamp = Date::toSql();
$trackingInformationDetailed->completed = 0;
} else {
// Set the new current position
$trackingInformationDetailed->current_position = $time;
$trackingInformationDetailed->current_position_timestamp = Date::toSql();
// Set the object duration
if ($duration > 0) {
$trackingInformationDetailed->object_duration = $duration;
}
// Check to see if we need to set a new farthest position
if (isset($trackingInformationDetailed->farthest_position) && $trackingInformationDetailed->current_position > $trackingInformationDetailed->farthest_position) {
$trackingInformationDetailed->farthest_position = $time;
$trackingInformationDetailed->farthest_position_timestamp = Date::toSql();
}
// If event type is end, we need to increment completed count
if ($event == 'ended') {
$trackingInformationDetailed->completed++;
}
}
// Save detailed
$mediaTrackingDetailed->save($trackingInformationDetailed);
// Save tracking information
if ($mediaTracking->save($trackingInformation)) {
if (!isset($trackingInformation->id)) {
$trackingInformation->id = $mediaTracking->id;
}
$trackingInformation->detailedId = $mediaTrackingDetailed->id;
echo json_encode($trackingInformation);
}
}
