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522 lines
20 KiB
522 lines
20 KiB
<?php
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/* For licensing terms, see /license.txt */
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/**
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* This script contains the server part of the AJAX interaction process.
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* The client part is located * in lp_api.php or other api's.
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* @package chamilo.learnpath
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* @author Yannick Warnier <ywarnier@beeznest.org>
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*/
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use ChamiloSession as Session;
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// Flag to allow for anonymous user - needs to be set before global.inc.php.
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$use_anonymous = true;
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// Name of the language file that needs to be included.
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$language_file[] = 'learnpath';
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require_once 'back_compat.inc.php';
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require_once 'learnpath.class.php';
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require_once 'scorm.class.php';
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require_once 'aicc.class.php';
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require_once 'learnpathItem.class.php';
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require_once 'scormItem.class.php';
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require_once 'aiccItem.class.php';
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/**
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* Writes an item's new values into the database and returns the operation result
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* @param int $lp_id Learnpath ID
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* @param int $user_id User ID
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* @param int $view_id View ID
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* @param int $item_id Item ID
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* @param float $score Current score
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* @param float $max Maximum score
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* @param float $min Minimum score
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* @param string $status Lesson status
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* @param int $time Session time
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* @param string $suspend Suspend data
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* @param string $location Lesson location
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* @param array $interactions Interactions array
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* @param string $core_exit Core exit SCORM string
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* @param int $sessionId Session ID
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* @param int $courseId Course ID
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* @param int $lmsFinish Whether the call was issued from SCORM's LMSFinish()
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* @param int $userNavigatesAway Whether the user is moving to another item
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* @param int $statusSignalReceived Whether the SCO called SetValue(lesson_status)
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* @return bool|null|string The resulting JS string
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*/
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function save_item(
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$lp_id,
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$user_id,
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$view_id,
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$item_id,
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$score = -1.0,
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$max = -1.0,
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$min = -1.0,
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$status = '',
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$time = 0,
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$suspend = '',
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$location = '',
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$interactions = array(),
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$core_exit = 'none',
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$sessionId = null,
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$courseId = null,
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$lmsFinish = 0,
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$userNavigatesAway = 0,
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$statusSignalReceived = 0
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) {
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$debug = 0;
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$return = null;
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if ($debug) {
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error_log('lp_ajax_save_item.php : save_item() params: ');
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error_log("item_id: $item_id");
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error_log("lp_id: $lp_id - user_id: - $user_id - view_id: $view_id - item_id: $item_id");
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error_log("score: $score - max:$max - min: $min - status:$status");
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error_log("time:$time - suspend: $suspend - location: $location - core_exit: $core_exit");
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error_log("finish: $lmsFinish - navigatesAway: $userNavigatesAway");
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}
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$myLP = learnpath::getLpFromSession(api_get_course_id(), $lp_id, $user_id);
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if (!is_a($myLP, 'learnpath')) {
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if ($debug) {
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error_log("mylp variable is not an learnpath object");
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}
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return null;
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}
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$prerequisitesCheck = $myLP->prerequisites_match($item_id);
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/** @var learnpathItem $myLPI */
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$myLPI = $myLP->items[$item_id];
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if (empty($myLPI)) {
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if ($debug > 0) {
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error_log("item #$item_id not found in the items array: ".print_r($myLP->items, 1));
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}
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return false;
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}
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// This functions sets the $this->db_item_view_id variable needed in get_status() see BT#5069
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$myLPI->set_lp_view($view_id);
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// Launch the prerequisites check and set error if needed
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if ($prerequisitesCheck !== true) {
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// If prerequisites were not matched, don't update any item info
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if ($debug) {
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error_log("prereq_check: ".intval($prerequisitesCheck));
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}
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return $return;
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} else {
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if ($debug > 1) {
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error_log('Prerequisites are OK');
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}
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if (isset($max) && $max != -1) {
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$myLPI->max_score = $max;
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$myLPI->set_max_score($max);
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if ($debug > 1) {
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error_log("Setting max_score: $max");
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}
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}
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if (isset($min) && $min != -1 && $min != 'undefined') {
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$myLPI->min_score = $min;
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if ($debug > 1) {
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error_log("Setting min_score: $min");
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}
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}
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// set_score function used to save the status, but this is not the case anymore
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if (isset($score) && $score != -1) {
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if ($debug > 1) {
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error_log('Calling set_score('.$score.')', 0);
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}
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$myLPI->set_score($score);
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if ($debug > 1) {
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error_log('Done calling set_score '.$myLPI->get_score(), 0);
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}
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} else {
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if ($debug > 1) {
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error_log("Score not updated");
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}
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}
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$statusIsSet = false;
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// Default behaviour.
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if (isset($status) && $status != '' && $status != 'undefined') {
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if ($debug > 1) {
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error_log('Calling set_status('.$status.')', 0);
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}
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$myLPI->set_status($status);
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$statusIsSet = true;
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if ($debug > 1) {
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error_log('Done calling set_status: checking from memory: '.$myLPI->get_status(false), 0);
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}
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} else {
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if ($debug > 1) {
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error_log("Status not updated");
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}
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}
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$my_type = $myLPI->get_type();
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// Set status to completed for hotpotatoes if score > 80%.
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if ($my_type == 'hotpotatoes') {
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if ((empty($status) ||
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$status == 'undefined' ||
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$status == 'not attempted') &&
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$max > 0
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) {
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if (($score/$max) > 0.8) {
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$myStatus = 'completed';
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if ($debug > 1) {
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error_log('Calling set_status('.$myStatus.') for hotpotatoes', 0);
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}
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$myLPI->set_status($myStatus);
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$statusIsSet = true;
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if ($debug > 1) {
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error_log('Done calling set_status for hotpotatoes - now '.$myLPI->get_status(false), 0);
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}
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}
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} elseif ($status == 'completed' && $max > 0 && ($score/$max) < 0.8) {
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$myStatus = 'failed';
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if ($debug > 1) {
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error_log('Calling set_status('.$myStatus.') for hotpotatoes', 0);
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}
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$myLPI->set_status($myStatus);
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$statusIsSet = true;
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if ($debug > 1) {
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error_log('Done calling set_status for hotpotatoes - now '.$myLPI->get_status(false), 0);
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}
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}
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} elseif ($my_type == 'sco') {
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/*
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* This is a specific implementation for SCORM 1.2, matching page 26 of SCORM 1.2's RTE
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* "Normally the SCO determines its own status and passes it to the LMS.
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* 1) If cmi.core.credit is set to "credit" and there is a mastery
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* score in the manifest (adlcp:masteryscore), the LMS can change
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* the status to either passed or failed depending on the
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* student's score compared to the mastery score.
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* 2) If there is no mastery score in the manifest
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* (adlcp:masteryscore), the LMS cannot override SCO
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* determined status.
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* 3) If the student is taking the SCO for no-credit, there is no
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* change to the lesson_status, with one exception. If the
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* lesson_mode is "browse", the lesson_status may change to
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* "browsed" even if the cmi.core.credit is set to no-credit.
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* "
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* Additionally, the LMS behaviour should be:
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* If a SCO sets the cmi.core.lesson_status then there is no problem.
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* However, the SCORM does not force the SCO to set the cmi.core.lesson_status.
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* There is some additional requirements that must be adhered to
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* successfully handle these cases:
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* Upon initial launch
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* the LMS should set the cmi.core.lesson_status to "not attempted".
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* Upon receiving the LMSFinish() call or the user navigates away,
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* the LMS should set the cmi.core.lesson_status for the SCO to "completed".
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* After setting the cmi.core.lesson_status to "completed",
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* the LMS should now check to see if a Mastery Score has been
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* specified in the cmi.student_data.mastery_score, if supported,
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* or the manifest that the SCO is a member of.
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* If a Mastery Score is provided and the SCO did set the
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* cmi.core.score.raw, the LMS shall compare the cmi.core.score.raw
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* to the Mastery Score and set the cmi.core.lesson_status to
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* either "passed" or "failed". If no Mastery Score is provided,
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* the LMS will leave the cmi.core.lesson_status as "completed"
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*/
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$masteryScore = $myLPI->get_mastery_score();
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if ($masteryScore == -1 || empty($masteryScore)) {
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$masteryScore = false;
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}
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$credit = $myLPI->get_credit();
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/**
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* 1) If cmi.core.credit is set to "credit" and there is a mastery
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* score in the manifest (adlcp:masteryscore), the LMS can change
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* the status to either passed or failed depending on the
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* student's score compared to the mastery score.
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*/
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if ($credit == 'credit' &&
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$masteryScore &&
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(isset($score) && $score != -1) &&
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!$statusIsSet && !$statusSignalReceived
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) {
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if ($score >= $masteryScore) {
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$myLPI->set_status('passed');
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} else {
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$myLPI->set_status('failed');
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}
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$statusIsSet = true;
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}
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/**
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* 2) If there is no mastery score in the manifest
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* (adlcp:masteryscore), the LMS cannot override SCO
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* determined status.
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*/
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if (!$statusIsSet && !$masteryScore && !$statusSignalReceived) {
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if (!empty($status)) {
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$myLPI->set_status($status);
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$statusIsSet = true;
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}
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//if no status was set directly, we keep the previous one
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}
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/**
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* 3) If the student is taking the SCO for no-credit, there is no
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* change to the lesson_status, with one exception. If the
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* lesson_mode is "browse", the lesson_status may change to
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* "browsed" even if the cmi.core.credit is set to no-credit.
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*/
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if (!$statusIsSet && $credit == 'no-credit' && !$statusSignalReceived) {
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$mode = $myLPI->get_lesson_mode();
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if ($mode == 'browse' && $status == 'browsed') {
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$myLPI->set_status($status);
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$statusIsSet = true;
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}
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//if no status was set directly, we keep the previous one
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}
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/**
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* If a SCO sets the cmi.core.lesson_status then there is no problem.
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* However, the SCORM does not force the SCO to set the
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* cmi.core.lesson_status. There is some additional requirements
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* that must be adhered to successfully handle these cases:
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*/
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if (!$statusIsSet && empty($status) && !$statusSignalReceived) {
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/**
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* Upon initial launch the LMS should set the
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* cmi.core.lesson_status to "not attempted".
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*/
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// this case should be handled by LMSInitialize() and xajax_switch_item()
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/**
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* Upon receiving the LMSFinish() call or the user navigates
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* away, the LMS should set the cmi.core.lesson_status for the
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* SCO to "completed".
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*/
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if ($lmsFinish || $userNavigatesAway) {
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$myStatus = 'completed';
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/**
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* After setting the cmi.core.lesson_status to "completed",
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* the LMS should now check to see if a Mastery Score has been
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* specified in the cmi.student_data.mastery_score, if supported,
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* or the manifest that the SCO is a member of.
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* If a Mastery Score is provided and the SCO did set the
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* cmi.core.score.raw, the LMS shall compare the cmi.core.score.raw
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* to the Mastery Score and set the cmi.core.lesson_status to
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* either "passed" or "failed". If no Mastery Score is provided,
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* the LMS will leave the cmi.core.lesson_status as "completed"
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*/
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if ($masteryScore && (isset($score) && $score != -1)) {
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if ($score >= $masteryScore) {
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$myStatus = 'passed';
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} else {
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$myStatus = 'failed';
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}
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}
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$myLPI->set_status($myStatus);
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$statusIsSet = true;
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}
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}
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// End of type=='sco'
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}
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// If no previous condition changed the SCO status, proceed with a
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// generic behaviour
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if (!$statusIsSet && !$statusSignalReceived) {
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// Default behaviour
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if (isset($status) && $status != '' && $status != 'undefined') {
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if ($debug > 1) {
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error_log('Calling set_status('.$status.')', 0);
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}
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$myLPI->set_status($status);
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if ($debug > 1) {
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error_log('Done calling set_status: checking from memory: '.$myLPI->get_status(false), 0);
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}
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} else {
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if ($debug > 1) {
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error_log("Status not updated");
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}
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}
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}
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if (isset($time) && $time != '' && $time != 'undefined') {
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// If big integer, then it's a timestamp, otherwise it's normal scorm time.
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if ($debug > 1) {
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error_log('Calling set_time('.$time.') ', 0);
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}
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if ($time == intval(strval($time)) && $time > 1000000) {
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if ($debug > 1) {
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error_log("Time is INT");
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}
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$real_time = time() - $time;
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if ($debug > 1) {
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error_log('Calling $real_time '.$real_time.' ', 0);
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}
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$myLPI->set_time($real_time, 'int');
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} else {
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if ($debug > 1) {
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error_log("Time is in SCORM format");
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}
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if ($debug > 1) {
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error_log('Calling $time '.$time.' ', 0);
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}
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$myLPI->set_time($time, 'scorm');
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}
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//if ($debug > 1) { error_log('Done calling set_time - now '.$myLPI->get_total_time(), 0); }
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} else {
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//$time = $myLPI->get_total_time();
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}
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if (isset($suspend) && $suspend != '' && $suspend != 'undefined') {
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$myLPI->current_data = $suspend;
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}
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if (isset($location) && $location != '' && $location!='undefined') {
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$myLPI->set_lesson_location($location);
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}
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// Deal with interactions provided in arrays in the following format:
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// id(0), type(1), time(2), weighting(3), correct_responses(4), student_response(5), result(6), latency(7)
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if (is_array($interactions) && count($interactions) > 0) {
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foreach ($interactions as $index => $interaction) {
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//$mylpi->add_interaction($index,$interactions[$index]);
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//fix DT#4444
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$clean_interaction = str_replace('@.|@', ',', $interactions[$index]);
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$myLPI->add_interaction($index, $clean_interaction);
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}
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}
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if ($core_exit != 'undefined') {
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$myLPI->set_core_exit($core_exit);
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}
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$myLP->save_item($item_id, false);
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}
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$myStatusInDB = $myLPI->get_status(true);
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if ($debug) {
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error_log("Status in DB: $myStatusInDB");
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}
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if ($myStatusInDB != 'completed' &&
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$myStatusInDB != 'passed' &&
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$myStatusInDB != 'browsed' &&
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$myStatusInDB != 'failed'
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) {
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$myStatusInMemory = $myLPI->get_status(false);
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if ($myStatusInMemory != $myStatusInDB) {
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$myStatus = $myStatusInMemory;
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} else {
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$myStatus = $myStatusInDB;
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}
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} else {
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$myStatus = $myStatusInDB;
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}
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$myTotal = $myLP->get_total_items_count_without_chapters();
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$myComplete = $myLP->get_complete_items_count();
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$myProgressMode = $myLP->get_progress_bar_mode();
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$myProgressMode = $myProgressMode == '' ? '%' : $myProgressMode;
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if ($debug > 1) {
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error_log("mystatus: $myStatus", 0);
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error_log("myprogress_mode: $myProgressMode", 0);
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error_log("progress: $myComplete / $myTotal", 0);
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}
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if ($myLPI->get_type() != 'sco') {
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// If this object's JS status has not been updated by the SCORM API, update now.
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$return .= "olms.lesson_status='".$myStatus."';";
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}
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$return .= "update_toc('".$myStatus."','".$item_id."');";
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$update_list = $myLP->get_update_queue();
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foreach ($update_list as $my_upd_id => $my_upd_status) {
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if ($my_upd_id != $item_id) {
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/* Only update the status from other items (i.e. parents and brothers),
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do not update current as we just did it already. */
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$return .= "update_toc('".$my_upd_status."','".$my_upd_id."');";
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}
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}
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$return .= "update_progress_bar('$myComplete', '$myTotal', '$myProgressMode');";
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if (!isset($_SESSION['login_as'])) {
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// If $_SESSION['login_as'] is set, then the user is an admin logged as the user.
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$tbl_track_login = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_LOGIN);
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$sql = "SELECT login_id, login_date
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FROM $tbl_track_login
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WHERE login_user_id= ".api_get_user_id()."
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ORDER BY login_date DESC
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LIMIT 0,1";
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$q_last_connection = Database::query($sql);
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if (Database::num_rows($q_last_connection) > 0) {
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$current_time = api_get_utc_datetime();
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$row = Database::fetch_array($q_last_connection);
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$i_id_last_connection = $row['login_id'];
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$sql = "UPDATE $tbl_track_login
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SET logout_date='".$current_time."'
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|
WHERE login_id = $i_id_last_connection";
|
|
Database::query($sql);
|
|
}
|
|
}
|
|
|
|
if ($myLP->get_type() == 2) {
|
|
$return .= "update_stats();";
|
|
}
|
|
|
|
// To be sure progress is updated.
|
|
$myLP->save_last();
|
|
|
|
Session::write('lpobject', serialize($myLP));
|
|
if ($debug > 0) {
|
|
error_log('---------------- lp_ajax_save_item.php : save_item end ----- ');
|
|
}
|
|
|
|
return $return;
|
|
}
|
|
|
|
$interactions = array();
|
|
if (isset($_REQUEST['interact'])) {
|
|
if (is_array($_REQUEST['interact'])) {
|
|
foreach ($_REQUEST['interact'] as $idx => $interac) {
|
|
$interactions[$idx] = preg_split('/,/', substr($interac, 1, -1));
|
|
if (!isset($interactions[$idx][7])) { // Make sure there are 7 elements.
|
|
$interactions[$idx][7] = '';
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
echo save_item(
|
|
(!empty($_REQUEST['lid']) ? $_REQUEST['lid'] : null),
|
|
(!empty($_REQUEST['uid']) ? $_REQUEST['uid'] : null),
|
|
(!empty($_REQUEST['vid']) ? $_REQUEST['vid'] : null),
|
|
(!empty($_REQUEST['iid']) ? $_REQUEST['iid'] : null),
|
|
(!empty($_REQUEST['s']) ? $_REQUEST['s'] : null),
|
|
(!empty($_REQUEST['max']) ? $_REQUEST['max'] : null),
|
|
(!empty($_REQUEST['min']) ? $_REQUEST['min'] : null),
|
|
(!empty($_REQUEST['status']) ? $_REQUEST['status'] : null),
|
|
(!empty($_REQUEST['t']) ? $_REQUEST['t'] : null),
|
|
(!empty($_REQUEST['suspend']) ? $_REQUEST['suspend'] : null),
|
|
(!empty($_REQUEST['loc']) ? $_REQUEST['loc'] : null),
|
|
$interactions,
|
|
(!empty($_REQUEST['core_exit']) ? $_REQUEST['core_exit'] : ''),
|
|
(!empty($_REQUEST['session_id']) ? $_REQUEST['session_id'] : ''),
|
|
(!empty($_REQUEST['course_id']) ? $_REQUEST['course_id'] : ''),
|
|
(empty($_REQUEST['finish']) ? 0 : 1),
|
|
(empty($_REQUEST['userNavigatesAway']) ? 0 : 1),
|
|
(empty($_REQUEST['statusSignalReceived']) ? 0 : 1)
|
|
);
|
|
|