Current File : /home/tjamichg/cursos.tjamich.gob.mx/main/lp/lp_ajax_switch_item.php
<?php
/* For licensing terms, see /license.txt */
use ChamiloSession as Session;
/**
* This script contains the server part of the xajax interaction process. The client part is located
* in lp_api.php or other api's.
* This is a first attempt at using xajax and AJAX in general, so the code might be a bit unsettling.
*
* @author Yannick Warnier <ywarnier@beeznest.org>
*/
// Flag to allow for anonymous user - needs to be set before global.inc.php
$use_anonymous = true;
require_once __DIR__.'/../inc/global.inc.php';
/**
* Get one item's details.
*
* @param int LP ID
* @param int user ID
* @param int View ID
* @param int Current item ID
* @param int New item ID
*/
function switch_item_details($lp_id, $user_id, $view_id, $current_item, $next_item)
{
$debug = 0;
$return = '';
if ($debug > 0) {
error_log('--------------------------------------');
error_log('SWITCH');
error_log('Params('.$lp_id.','.$user_id.','.$view_id.','.$current_item.','.$next_item.')');
}
//$objResponse = new xajaxResponse();
/*$item_id may be one of:
* -'next'
* -'previous'
* -'first'
* -'last'
* - a real item ID
*/
$mylp = learnpath::getLpFromSession(api_get_course_id(), $lp_id, $user_id);
$new_item_id = 0;
$saveStatus = learnpathItem::isLpItemAutoComplete($current_item);
switch ($next_item) {
case 'next':
$mylp->set_current_item($current_item);
$mylp->next();
$new_item_id = $mylp->get_current_item_id();
if ($debug > 1) {
error_log('In {next} - next item is '.$new_item_id.'(current: '.$current_item.')');
}
break;
case 'previous':
$mylp->set_current_item($current_item);
$mylp->previous();
$new_item_id = $mylp->get_current_item_id();
if ($debug > 1) {
error_log('In {previous} - next item is '.$new_item_id.'(current: '.$current_item.')');
}
break;
case 'first':
$mylp->set_current_item($current_item);
$mylp->first();
$new_item_id = $mylp->get_current_item_id();
if ($debug > 1) {
error_log('In {first} - next item is '.$new_item_id.'(current: '.$current_item.')');
}
break;
case 'last':
break;
default:
// Should be filtered to check it's not hacked.
if ($next_item == $current_item) {
// If we're opening the same item again.
$mylp->items[$current_item]->restart();
}
$new_item_id = $next_item;
$mylp->set_current_item($new_item_id);
if ($debug > 1) {
error_log('In {default} - next item is '.$new_item_id.'(current: '.$current_item.')');
}
break;
}
if (WhispeakAuthPlugin::isLpItemMarked($new_item_id)) {
ChamiloSession::write(
WhispeakAuthPlugin::SESSION_LP_ITEM,
['lp' => $lp_id, 'lp_item' => $new_item_id, 'src' => '']
);
}
$mylp->start_current_item(true);
if ($saveStatus) {
if ($mylp->force_commit) {
$mylp->save_current();
}
}
if (is_object($mylp->items[$new_item_id])) {
$mylpi = $mylp->items[$new_item_id];
} else {
if ($debug > 1) {
error_log('In switch_item_details - generating new item object', 0);
}
$mylpi = new learnpathItem($new_item_id, $user_id);
$mylpi->set_lp_view($view_id);
}
/*
* now get what's needed by the SCORM API:
* -score
* -max
* -min
* -lesson_status
* -session_time
* -suspend_data
*/
$myscore = $mylpi->get_score();
$mymax = $mylpi->get_max();
if ('' === $mymax) {
$mymax = "''";
}
$mymin = $mylpi->get_min();
$mylesson_status = $mylpi->get_status();
$mylesson_location = $mylpi->get_lesson_location();
$mytotal_time = $mylpi->get_scorm_time('js');
$mymastery_score = $mylpi->get_mastery_score();
$mymax_time_allowed = $mylpi->get_max_time_allowed();
$mylaunch_data = $mylpi->get_launch_data();
/*
if ($mylpi->get_type() == 'asset') {
// Temporary measure to save completion of an asset. Later on,
// Chamilo should trigger something on unload, maybe...
// (even though that would mean the last item cannot be completed)
$mylesson_status = 'completed';
$mylpi->set_status('completed');
$mylpi->save();
}
*/
$mysession_time = $mylpi->get_total_time();
$mysuspend_data = $mylpi->get_suspend_data();
$mylesson_location = $mylpi->get_lesson_location();
$myic = $mylpi->get_interactions_count();
$myistring = '';
for ($i = 0; $i < $myic; $i++) {
$myistring .= ",[".$i.",'','','','','','','']";
}
if (!empty($myistring)) {
$myistring = substr($myistring, 1);
}
/*
* The following lines should reinitialize the values for the SCO
* However, due to many complications, we are now relying more on the
* LMSInitialize() call and its underlying lp_ajax_initialize.php call
* so this code is technically deprecated (but the change of item_id should
* remain). However, due to numerous technical issues with SCORM, we prefer
* leaving it as a double-lock security. If removing, please test carefully
* with both SCORM and proper learning path tracking.
*/
$return .=
"olms.score=".$myscore.";".
"olms.max=".$mymax.";".
"olms.min=".$mymin.";".
"olms.lesson_status='".$mylesson_status."';".
"olms.lesson_location='".$mylesson_location."';".
"olms.session_time='".$mysession_time."';".
"olms.suspend_data='".$mysuspend_data."';".
"olms.total_time = '".$mytotal_time."';".
"olms.mastery_score = '".$mymastery_score."';".
"olms.max_time_allowed = '".$mymax_time_allowed."';".
"olms.launch_data = '".$mylaunch_data."';".
"olms.interactions = new Array(".$myistring.");".
"olms.item_objectives = new Array();".
"olms.G_lastError = 0;".
"olms.G_LastErrorMessage = 'No error';".
"olms.finishSignalReceived = 0;";
/*
* and re-initialise the rest
* -lms_lp_id
* -lms_item_id
* -lms_old_item_id
* -lms_new_item_id
* -lms_initialized
* -lms_progress_bar_mode
* -lms_view_id
* -lms_user_id
*/
$mytotal = $mylp->getTotalItemsCountWithoutDirs();
$mycomplete = $mylp->get_complete_items_count();
$myprogress_mode = $mylp->get_progress_bar_mode();
$myprogress_mode = ('' == $myprogress_mode ? '%' : $myprogress_mode);
$mynext = $mylp->get_next_item_id();
$myprevious = $mylp->get_previous_item_id();
$myitemtype = $mylpi->get_type();
$mylesson_mode = $mylpi->get_lesson_mode();
$mycredit = $mylpi->get_credit();
$mylaunch_data = $mylpi->get_launch_data();
$myinteractions_count = $mylpi->get_interactions_count();
//$myobjectives_count = $mylpi->get_objectives_count();
$mycore_exit = $mylpi->get_core_exit();
$return .=
//"saved_lesson_status='not attempted';" .
"olms.lms_lp_id=".$lp_id.";".
"olms.lms_item_id=".$new_item_id.";".
"olms.lms_old_item_id=0;".
//"lms_been_synchronized=0;" .
"olms.lms_initialized=0;".
//"lms_total_lessons=".$mytotal.";" .
//"lms_complete_lessons=".$mycomplete.";" .
//"lms_progress_bar_mode='".$myprogress_mode."';" .
"olms.lms_view_id=".$view_id.";".
"olms.lms_user_id=".$user_id.";".
"olms.next_item=".$new_item_id.";".// This one is very important to replace possible literal strings.
"olms.lms_next_item=".$mynext.";".
"olms.lms_previous_item=".$myprevious.";".
"olms.lms_item_type = '".$myitemtype."';".
"olms.lms_item_credit = '".$mycredit."';".
"olms.lms_item_lesson_mode = '".$mylesson_mode."';".
"olms.lms_item_launch_data = '".$mylaunch_data."';".
"olms.lms_item_interactions_count = '".$myinteractions_count."';".
"olms.lms_item_objectives_count = '".$myinteractions_count."';".
"olms.lms_item_core_exit = '".$mycore_exit."';".
"olms.asset_timer = 0;";
$sessionId = api_get_session_id();
$updateMinTime = '';
if (Tracking::minimumTimeAvailable($sessionId, api_get_course_int_id())) {
$timeLp = $mylp->getAccumulateWorkTime();
$timeTotalCourse = $mylp->getAccumulateWorkTimeTotalCourse();
// Minimum connection percentage
$perc = 100;
// Time from the course
$tc = $timeTotalCourse;
// Percentage of the learning paths
$pl = 0;
if (!empty($timeTotalCourse)) {
$pl = $timeLp / $timeTotalCourse;
}
// Minimum time for each learning path
$time_total = intval($pl * $tc * $perc / 100) * 60;
$lpTimeList = Tracking::getCalculateTime($user_id, api_get_course_int_id(), $sessionId);
$lpTime = isset($lpTimeList[TOOL_LEARNPATH][$lp_id]) ? $lpTimeList[TOOL_LEARNPATH][$lp_id] : 0;
if ($lpTime >= $time_total) {
$time_spent = $time_total;
} else {
$time_spent = $lpTime;
}
$hour = (intval($lpTime / 3600)) < 10 ? '0'.intval($lpTime / 3600) : intval($lpTime / 3600);
$minute = date('i', $lpTime);
$second = date('s', $lpTime);
$updateMinTime = "update_time_bar('$time_spent','$time_total','%');".
"update_chronometer('$hour','$minute','$second');";
}
$return .=
"update_toc('unhighlight','".$current_item."');".
"update_toc('highlight','".$new_item_id."');".
"update_toc('$mylesson_status','".$new_item_id."');".
"update_progress_bar('$mycomplete','$mytotal','$myprogress_mode');".
$updateMinTime
;
$return .= 'updateGamificationValues(); ';
$mylp->set_error_msg('');
$mylp->prerequisites_match(); // Check the prerequisites are all complete.
if ($debug > 1) {
error_log($return);
error_log('Prereq_match() returned '.htmlentities($mylp->error), 0);
}
// Save the new item ID for the exercise tool to use.
Session::write('scorm_item_id', $new_item_id);
Session::write('lpobject', serialize($mylp));
Session::write('oLP', $mylp);
return $return;
}
echo switch_item_details(
$_REQUEST['lid'],
$_REQUEST['uid'],
$_REQUEST['vid'],
$_REQUEST['iid'],
$_REQUEST['next']
);
Mini Shell