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309 lines
12 KiB
309 lines
12 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 xajax interaction process. The client part is located
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* in lp_api.php or other api's.
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* This is a first attempt at using xajax and AJAX in general, so the code might be a bit unsettling.
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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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/**
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* Code
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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 integer Learnpath ID
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* @param integer User ID
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* @param integer View ID
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* @param integer Item ID
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* @param double Current score
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* @param double Maximum score
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* @param double Minimum score
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* @param string Lesson status
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* @param string Session time
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* @param string Suspend data
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* @param string Lesson location
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* @param array Interactions array
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* @param string Core exit SCORM string
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*/
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function save_item($lp_id, $user_id, $view_id, $item_id, $score = -1, $max = -1, $min = -1, $status = '', $time = 0, $suspend = '', $location = '', $interactions = array(), $core_exit = 'none')
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{
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global $debug;
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$return = null;
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if ($debug > 0) {
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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 - time:$time - suspend: $suspend - location: $location - core_exit: $core_exit");
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}
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$mylp = null;
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$lpobject = Session::read('lpobject');
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if (isset($lpobject)) {
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$oLP = unserialize($lpobject);
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if ($debug) error_log("lpobject was set");
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if (!is_object($oLP)) {
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unset($oLP);
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$code = api_get_course_id();
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$mylp = new learnpath($code, $lp_id, $user_id);
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if ($debug) error_log("Creating learnpath");
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} else {
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$mylp = $oLP;
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if ($debug) error_log("Loading learnpath from unserialize");
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}
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} else {
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if ($debug) {
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error_log("lpobject was not set");
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}
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}
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if (!is_a($mylp, 'learnpath')) {
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if ($debug) {
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error_log("mylp variable is not an learnpath object");
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}
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return null;
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}
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$prereq_check = $mylp->prerequisites_match($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($view_id);
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// Launch the prerequisites check and set error if needed
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if ($prereq_check !== true) {
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// If prerequisites were not matched, don't update any item info
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if ($debug) {
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error_log("prereq_check: ".intval($prereq_check));
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}
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return $return;
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} else {
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if ($debug > 1) { error_log('Prerequisites are OK'); }
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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) { error_log("Setting max_score: $max"); }
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}
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if (isset($min) && $min != -1 && $min != 'undefined') {
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$mylpi->min_score = $min;
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if ($debug > 1) { error_log("Setting min_score: $min"); }
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}
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// set_score function already saves the status
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if (isset($score) && $score != -1) {
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if ($debug > 1) { error_log('Calling set_score('.$score.')', 0); }
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if ($debug > 1) { error_log('set_score changes the status to failed/passed if mastery score is provided', 0); }
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$mylpi->set_score($score);
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if ($debug > 1) { error_log('Done calling set_score '.$mylpi->get_score(), 0); }
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} else {
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if ($debug > 1) { error_log("Score not updated"); }
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// Default behaviour
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if (isset($status) && $status != '' && $status != 'undefined') {
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if ($debug > 1) { error_log('Calling set_status('.$status.')', 0); }
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$mylpi->set_status($status);
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if ($debug > 1) { error_log('Done calling set_status: checking from memory: '.$mylpi->get_status(false), 0); }
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} else {
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if ($debug > 1) { error_log("Status not updated"); }
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}
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}
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// Hack to set status to completed for hotpotatoes if score > 80%.
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$my_type = $mylpi->get_type();
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if ($my_type == 'hotpotatoes') {
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if ((empty($status) || $status == 'undefined' || $status == 'not attempted') && $max > 0) {
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if (($score/$max) > 0.8) {
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$mystatus = 'completed';
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if ($debug > 1) { error_log('Calling set_status('.$mystatus.') for hotpotatoes', 0); }
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$mylpi->set_status($mystatus);
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if ($debug > 1) { error_log('Done calling set_status for hotpotatoes - now '.$mylpi->get_status(false), 0); }
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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 ($debug > 1) { error_log('Calling set_status('.$mystatus.') for hotpotatoes', 0); }
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$mylpi->set_status($mystatus);
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if ($debug > 1) { error_log('Done calling set_status for hotpotatoes - now '.$mylpi->get_status(false), 0); }
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}
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}
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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) { error_log('Calling set_time('.$time.') ', 0); }
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if ($time == intval(strval($time)) && $time > 1000000) {
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if ($debug > 1) { error_log("Time is INT"); }
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$real_time = time() - $time;
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if ($debug > 1) { error_log('Calling $real_time '.$real_time.' ', 0); }
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$mylpi->set_time($real_time, 'int');
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} else {
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if ($debug > 1) { error_log("Time is in SCORM format"); }
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if ($debug > 1) { error_log('Calling $time '.$time.' ', 0); }
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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 = $suspend; //escapetxt($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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$mystatus_in_db = $mylpi->get_status(true);
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if ($debug) error_log("Status in DB: $mystatus_in_db");
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if ($mystatus_in_db != 'completed' && $mystatus_in_db != 'passed' && $mystatus_in_db != 'browsed' && $mystatus_in_db != 'failed') {
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$mystatus_in_memory = $mylpi->get_status(false);
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if ($mystatus_in_memory != $mystatus_in_db) {
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$mystatus = $mystatus_in_memory;
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} else {
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$mystatus = $mystatus_in_db;
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}
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} else {
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$mystatus = $mystatus_in_db;
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}
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$mytotal = $mylp->get_total_items_count_without_chapters();
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$mycomplete = $mylp->get_complete_items_count();
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$myprogress_mode = $mylp->get_progress_bar_mode();
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$myprogress_mode = $myprogress_mode == '' ? '%' : $myprogress_mode;
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if ($debug > 1) { error_log("mystatus: $mystatus", 0); }
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if ($debug > 1) { error_log("myprogress_mode: $myprogress_mode", 0); }
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if ($debug > 1) { error_log("progress: $mycomplete / $mytotal", 0); }
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//$_SESSION['lpobject'] = serialize($mylp);
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if ($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 != $item_id) { // Only update the status from other items (i.e. parents and brothers), do not update current as we just did it already.
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$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', '$mytotal', '$myprogress_mode');";
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if ($debug > 0) {
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$return .= "logit_lms('Saved data for item ".$item_id.", user ".$user_id." (status=".$mystatus.")',2);";
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}
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if (!isset($_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_last_connection = "SELECT login_id, login_date
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FROM $tbl_track_login
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WHERE login_user_id='".api_get_user_id()."'
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ORDER BY login_date DESC LIMIT 0,1";
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$q_last_connection = Database::query($sql_last_connection);
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if (Database::num_rows($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 = $row['login_id'];
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$s_sql_update_logout_date = "UPDATE $tbl_track_login SET logout_date='".$current_time."' WHERE login_id='$i_id_last_connection'";
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Database::query($s_sql_update_logout_date);
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}
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}
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if ($mylp->get_type() == 2) {
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$return .= "update_stats();";
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}
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//To be sure progress is updated
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$mylp->save_last();
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Session::write('lpobject', serialize($mylp));
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if ($debug > 0) { error_log('---------------- lp_ajax_save_item.php : save_item end ----- '); }
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return $return;
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}
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$interactions = array();
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if (isset($_REQUEST['interact'])) {
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if (is_array($_REQUEST['interact'])) {
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foreach ($_REQUEST['interact'] as $idx => $interac) {
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$interactions[$idx] = preg_split('/,/', substr($interac, 1, -1));
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if (!isset($interactions[$idx][7])) { // Make sure there are 7 elements.
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$interactions[$idx][7] = '';
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}
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}
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}
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}
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echo save_item(
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(!empty($_REQUEST['lid'])?$_REQUEST['lid']:null),
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(!empty($_REQUEST['uid'])?$_REQUEST['uid']:null),
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(!empty($_REQUEST['vid'])?$_REQUEST['vid']:null),
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(!empty($_REQUEST['iid'])?$_REQUEST['iid']:null),
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(!empty($_REQUEST['s'])?$_REQUEST['s']:null),
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(!empty($_REQUEST['max'])?$_REQUEST['max']:null),
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(!empty($_REQUEST['min'])?$_REQUEST['min']:null),
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(!empty($_REQUEST['status'])?$_REQUEST['status']:null),
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(!empty($_REQUEST['t'])?$_REQUEST['t']:null),
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(!empty($_REQUEST['suspend'])?$_REQUEST['suspend']:null),
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(!empty($_REQUEST['loc'])?$_REQUEST['loc']:null),
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$interactions,
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(!empty($_REQUEST['core_exit'])?$_REQUEST['core_exit']:'')
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);
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