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- <?php //$id:$
- /* For licensing terms, see /license.txt */
- /**
- * This file contains the lp_item class, that inherits from the learnpath class
- * @package chamilo.learnpath
- * @author Yannick Warnier <ywarnier@beeznest.org>
- */
- /**
- * lp_item defines items belonging to a learnpath. Each item has a name, a score, a use time and additional
- * information that enables tracking a user's progress in a learning path
- */
- class learnpathItem {
- var $attempt_id; //also called "objectives" SCORM-wise
- var $audio; //the path to an audio file (stored in document/audio/)
- var $children = array(); //contains the ids of children items
- var $condition; //if this item has a special condition embedded
- var $current_score;
- var $current_start_time;
- var $current_stop_time;
- var $current_data = '';
- var $db_id;
- var $db_item_view_id = '';
- var $description = '';
- var $file;
- //at the moment, interactions are just an array of arrays with a structure of 8 text fields
- //id(0), type(1), time(2), weighting(3),correct_responses(4),student_response(5),result(6),latency(7)
- var $interactions = array();
- var $interactions_count = 0;
- var $objectives = array();
- var $objectives_count = 0;
- var $launch_data = '';
- var $lesson_location = '';
- var $level = 0;
- //var $location; //only set this for SCORM?
- var $lp_id;
- var $max_score;
- var $mastery_score;
- var $min_score;
- var $max_time_allowed = '';
- var $name;
- var $next;
- var $parent;
- var $path; // In some cases the exo_id = exercise_id in courseDb exercices table
- var $possible_status = array('not attempted','incomplete','completed','passed','failed','browsed');
- var $prereq_string = '';
- var $prereq_alert = '';
- var $prereqs = array();
- var $previous;
- var $prevent_reinit = 1; // 0 = multiple attempts 1 = one attempt
- var $ref;
- var $save_on_close = true;
- var $search_did = NULL;
- var $status;
- var $title;
- var $type; // this attribute can contain chapter|link|student_publication|module|quiz|document|forum|thread
- var $view_id;
- var $debug = 0; //logging param
- /**
- * Class constructor. Prepares the learnpath_item for later launch
- *
- * Don't forget to use set_lp_view() if applicable after creating the item.
- * Setting an lp_view will finalise the item_view data collection
- * @param integer Learnpath item ID
- * @param integer User ID
- * @return boolean True on success, false on failure
- */
- function learnpathItem($db_id, $user_id) {
- //get items table
- if($this->debug>0){error_log('New LP - In learnpathItem constructor: '.$db_id.','.$user_id,0);}
- $items_table = Database::get_course_table(TABLE_LP_ITEM);
- $id = (int) $db_id;
- $sql = "SELECT * FROM $items_table WHERE id = $id";
- //error_log('New LP - Creating item object from DB: '.$sql,0);
- $res = @Database::query($sql);
- if(Database::num_rows($res)<1)
- {
- $this->error = "Could not find given learnpath item in learnpath_item table";
- //error_log('New LP - '.$this->error,0);
- return false;
- }
- $row = Database::fetch_array($res);
- $this->lp_id = $row['lp_id'];
- $this->max_score = $row['max_score'];
- $this->min_score = $row['min_score'];
- $this->name = $row['title'];
- $this->type = $row['item_type'];
- $this->ref = $row['ref'];
- $this->title = $row['title'];
- $this->description = $row['description'];
- $this->path = $row['path'];
- $this->mastery_score = $row['mastery_score'];
- $this->parent = $row['parent_item_id'];
- $this->next = $row['next_item_id'];
- $this->previous = $row['previous_item_id'];
- $this->display_order = $row['display_order'];
- $this->prereq_string = $row['prerequisite'];
- $this->max_time_allowed = $row['max_time_allowed'];
- if(isset($row['launch_data'])){
- $this->launch_data = $row['launch_data'];
- }
- $this->save_on_close = true;
- $this->db_id = $id;
- // get search_did
- if (api_get_setting('search_enabled')=='true') {
- $tbl_se_ref = Database::get_main_table(TABLE_MAIN_SEARCH_ENGINE_REF);
- $sql = 'SELECT * FROM %s WHERE course_code=\'%s\' AND tool_id=\'%s\' AND ref_id_high_level=%s AND ref_id_second_level=%d LIMIT 1';
- // TODO: verify if it's possible to assume the actual course instead of getting it from db
- $sql = sprintf($sql, $tbl_se_ref, api_get_course_id(), TOOL_LEARNPATH, $this->lp_id, $id);
- $res = Database::query($sql);
- if (Database::num_rows($res) > 0) {
- $se_ref = Database::fetch_array($res);
- $this->search_did = (int)$se_ref['search_did'];
- }
- }
- $this->audio = $row['audio'];
- //error_log('New LP - End of learnpathItem constructor for item '.$id,0);
- return true;
- }
- /**
- * Adds a child to the current item
- */
- function add_child($item)
- {
- if($this->debug>0){error_log('New LP - In learnpathItem::add_child()',0);}
- if(!empty($item))
- {
- //do not check in DB as we expect the call to come from the learnpath class which should
- //be aware of any fake
- $this->children[] = $item;
- }
- }
- /**
- * Adds an interaction to the current item
- * @param int Index (order ID) of the interaction inside this item
- * @param array Array of parameters: id(0), type(1), time(2), weighting(3),correct_responses(4),student_response(5),result(6),latency(7)
- * @result void
- */
- function add_interaction($index,$params)
- {
- $this->interactions[$index] = $params;
- //take the current maximum index to generate the interactions_count
- if(($index+1)>$this->interactions_count){
- $this->interactions_count = $index+1;
- }
- /*
- if(is_array($this->interactions[$index]) && count($this->interactions[$index])>0){
- $this->interactions[$index] = $params;
- return false;
- }else{
- if(count($params)==8){//we rely on the calling script to provide parameters in the right order
- $this->interactions[$index] = $params;
- return true;
- }else{
- return false;
- }
- }
- */
- }
- /**
- * Adds an objective to the current item
- * @param array Array of parameters: id(0), status(1), score_raw(2), score_max(3), score_min(4)
- * @result void
- */
- function add_objective($index,$params)
- {
- if(empty($params[0])){return null;}
- $this->objectives[$index] = $params;
- //take the current maximum index to generate the objectives_count
- if((count($this->objectives)+1)>$this->objectives_count){
- $this->objectives_count = (count($this->objectives)+1);
- }
- }
- /**
- * Closes/stops the item viewing. Finalises runtime values. If required, save to DB.
- * @return boolean True on success, false otherwise
- */
- function close()
- {
- if($this->debug>0){error_log('New LP - In learnpathItem::close()',0);}
- $this->current_stop_time = time();
- $type = $this->get_type();
- if($type != 'sco'){
- if($type == TOOL_QUIZ or $type == TOOL_HOTPOTATOES)
- {
- $this->get_status(true,true);//update status (second option forces the update)
- }
- else
- {
- $this->status = $this->possible_status[2];
- }
- }
- if($this->save_on_close)
- {
- $this->save();
- }
- return true;
- }
- /**
- * Deletes all traces of this item in the database
- * @return boolean true. Doesn't check for errors yet.
- */
- function delete()
- {
- if($this->debug>0){error_log('New LP - In learnpath_item::delete() for item '.$this->db_id,0);}
- $lp_item_view = Database::get_course_table(TABLE_LP_ITEM_VIEW);
- $lp_item = Database::get_course_table(TABLE_LP_ITEM);
- $sql_del_view = "DELETE FROM $lp_item_view WHERE lp_item_id = ".$this->db_id;
- //error_log('New LP - Deleting from lp_item_view: '.$sql_del_view,0);
- $res_del_view = Database::query($sql_del_view);
- $sql_sel = "SELECT * FROM $lp_item WHERE id = ".$this->db_id;
- $res_sel = Database::query($sql_sel);
- if(Database::num_rows($res_sel)<1){return false;}
- $row = Database::fetch_array($res_sel);
- $sql_del_item = "DELETE FROM $lp_item WHERE id = ".$this->db_id;
- //error_log('New LP - Deleting from lp_item: '.$sql_del_view,0);
- $res_del_item = Database::query($sql_del_item);
- if (api_get_setting('search_enabled') == 'true') {
- if (!is_null($this->search_did)) {
- require_once(api_get_path(LIBRARY_PATH) .'search/DokeosIndexer.class.php');
- $di = new DokeosIndexer();
- $di->remove_document($this->search_did);
- }
- }
- return true;
- }
- /**
- * Drops a child from the children array
- * @param string index of child item to drop
- * @return void
- */
- function drop_child($item)
- {
- if($this->debug>0){error_log('New LP - In learnpathItem::drop_child()',0);}
- if(!empty($item))
- {
- foreach($this->children as $index => $child)
- {
- if($child == $item){
- $this->children[$index] = null;
- }
- }
- }
- }
- /**
- * Gets the current attempt_id for this user on this item
- * @return integer The attempt_id for this item view by this user, or 1 if none defined
- */
- function get_attempt_id()
- {
- if($this->debug>0){error_log('New LP - In learnpathItem::get_attempt_id() on item '.$this->db_id,0);}
- $res = 1;
- if(!empty($this->attempt_id))
- {
- $res = $this->attempt_id;
- }
- if($this->debug>0){error_log('New LP - End of learnpathItem::get_attempt_id() on item '.$this->db_id.' - Returning '.$res,0);}
- return $res;
- }
- /**
- * Gets a list of the item's children
- * @return array Array of children items IDs
- */
- function get_children()
- {
- if($this->debug>0){error_log('New LP - In learnpathItem::get_children()',0);}
- $list = array();
- foreach($this->children as $child){
- if(!empty($child))
- {
- //error_log('New LP - Found '.$child,0);
- $list[] = $child;
- }
- }
- return $list;
- }
- /**
- * Gets the core_exit value from the database
- */
- function get_core_exit()
- {
- return $this->core_exit;
- }
- /**
- * Gets the credit information (rather scorm-stuff) based on current status and reinit
- * autorization. Credit tells the sco(content) if Dokeos will record the data it is sent (credit) or not (no-credit)
- * @return string 'credit' or 'no-credit'. Defaults to 'credit' because if we don't know enough about this item, it's probably because it was never used before.
- */
- function get_credit(){
- if(!empty($this->debug) && $this->debug>1){error_log('New LP - In learnpathItem::get_credit()',0);}
- $credit = 'credit';
- //now check the value of prevent_reinit (if it's 0, return credit as the default was)
- if($this->get_prevent_reinit() != 0){ //if prevent_reinit == 1 (or more)
- //if status is not attempted or incomplete, credit anyway. Otherwise:
- //check the status in the database rather than in the object, as checking in the object
- //would always return "no-credit" when we want to set it to completed
- $status = $this->get_status(true);
- if(!empty($this->debug) && $this->debug>2){error_log('New LP - In learnpathItem::get_credit() - get_prevent_reinit!=0 and status is '.$status,0);}
- if($status != $this->possible_status[0] AND $status != $this->possible_status[1]){
- $credit = 'no-credit';
- }
- }
- return $credit;
- }
- /**
- * Gets the current start time property
- * @return integer Current start time, or current time if none
- */
- function get_current_start_time()
- {
- if($this->debug>0){error_log('New LP - In learnpathItem::get_current_start_time()',0);}
- if(empty($this->current_start_time))
- {
- return time();
- }else{
- return $this->current_start_time;
- }
- }
- /**
- * Gets the item's description
- * @return string Description
- */
- function get_description(){
- if($this->debug>0){error_log('New LP - In learnpathItem::get_description()',0);}
- if(empty($this->description)){return '';}
- return $this->description;
- }
- /**
- * Gets the file path from the course's root directory, no matter what tool it is from.
- * @return string The file path, or an empty string if there is no file attached, or '-1' if the file must be replaced by an error page
- */
- function get_file_path($path_to_scorm_dir=''){
- if($this->debug>0){error_log('New LP - In learnpathItem::get_file_path()',0);}
- $path = $this->get_path();
- $type = $this->get_type();
- if(empty($path))
- {
- if($type == 'dokeos_chapter' OR $type=='chapter' OR $type == 'dir')
- {
- return '';
- }
- else
- {
- return '-1';
- }
- }elseif($path == strval(intval($path))){
- //the path is numeric, so it is a reference to a Dokeos object
- switch($type)
- {
- case 'dokeos_chapter':
- case 'dir':
- case 'chapter':
- return '';
- case TOOL_DOCUMENT:
- $table_doc = Database::get_course_table(TABLE_DOCUMENT);
- $sql = 'SELECT path FROM '.$table_doc.' WHERE id = '.$path;
- $res = Database::query($sql);
- $row = Database::fetch_array($res);
- $real_path = 'document'.$row['path'];
- return $real_path;
- case TOOL_STUDENTPUBLICATION:
- case TOOL_QUIZ:
- case TOOL_FORUM:
- case TOOL_THREAD:
- case TOOL_LINK:
- default:
- return '-1';
- }
- }else{
- if(!empty($path_to_scorm_dir))
- {
- $path = $path_to_scorm_dir.$path;
- }
- return $path;
- }
- }
- /**
- * Gets the DB ID
- * @return integer Database ID for the current item
- */
- function get_id(){
- if($this->debug>1){error_log('New LP - In learnpathItem::get_id()',0);}
- if(!empty($this->db_id))
- {
- return $this->db_id;
- }
- //TODO check this return value is valid for children classes (SCORM?)
- return 0;
- }
- /**
- * Loads the interactions into the item object, from the database.
- * If object interactions exist, they will be overwritten by this function,
- * using the database elements only.
- * @return void Directly sets the interactions attribute in memory
- */
- function load_interactions() {
- $this->interactions = array();
- $tbl = Database::get_course_table(TABLE_LP_ITEM_VIEW);
- $sql = "SELECT id FROM $tbl " .
- "WHERE lp_item_id = ".$this->db_id." " .
- "AND lp_view_id = ".$this->view_id." " .
- "AND view_count = ".$this->attempt_id;
- $res = Database::query($sql);
- if (Database::num_rows($res)>0) {
- $row = Database::fetch_array($res);
- $lp_iv_id = $row[0];
- $iva_table = Database::get_course_table(TABLE_LP_IV_INTERACTION);
- $iva_sql = "SELECT * FROM $iva_table " .
- "WHERE lp_iv_id = $lp_iv_id ";
- $res_sql = Database::query($iva_sql);
- while ($row = Database::fetch_array($res_sql)) {
- $this->interactions[$row['interaction_id']] = array($row['interaction_id'],$row['interaction_type'],$row['weighting'],$row['completion_time'],$row['correct_responses'],$row['student_responses'],$row['result'],$row['latency']);
- }
- }
- }
- /**
- * Gets the current count of interactions recorded in the database
- * @param bool Whether to count from database or not (defaults to no)
- * @return int The current number of interactions recorder
- */
- function get_interactions_count($checkdb=false)
- {
- if($this->debug>1){error_log('New LP - In learnpathItem::get_interactions_count()',0);}
- $return = 0;
- if ($checkdb) {
- $tbl = Database::get_course_table(TABLE_LP_ITEM_VIEW);
- $sql = "SELECT id FROM $tbl " .
- "WHERE lp_item_id = ".$this->db_id." " .
- "AND lp_view_id = ".$this->view_id." " .
- "AND view_count = ".$this->attempt_id;
- $res = Database::query($sql);
- if (Database::num_rows($res)>0) {
- $row = Database::fetch_array($res);
- $lp_iv_id = $row[0];
- $iva_table = Database::get_course_table(TABLE_LP_IV_INTERACTION);
- $iva_sql = "SELECT count(id) as mycount FROM $iva_table " .
- "WHERE lp_iv_id = $lp_iv_id ";
- $res_sql = Database::query($iva_sql);
- if (Database::num_rows($res_sql)>0) {
- $row = Database::fetch_array($res_sql);
- $return = $row['mycount'];
- }
- }
- } else {
- if(!empty($this->interactions_count)){
- $return = $this->interactions_count;
- }
- }
- return $return;
- }
- /**
- * Gets the JavaScript array content to fill the interactions array.
- * @params bool Whether to check directly into the database (default no)
- * @return string An empty string if no interaction, a JS array definition otherwise
- */
- function get_interactions_js_array($checkdb=false) {
- $return = '';
- if ($checkdb) {
- $this->load_interactions(true);
- }
- foreach ($this->interactions as $id=>$in) {
- $return .= "['$id','".$in[1]."','".$in[2]."','".$in[3]."','".$in[4]."','".$in[5]."','".$in[6]."','".$in[7]."'],";
- }
- if (!empty($return)) {
- $return = substr($return,0,-1);
- }
- return $return;
- }
- /**
- * Gets the current count of objectives recorded in the database
- * @return int The current number of objectives recorder
- */
- function get_objectives_count()
- {
- if($this->debug>1){error_log('New LP - In learnpathItem::get_objectives_count()',0);}
- $res = 0;
- if(!empty($this->objectives_count)){
- $res = $this->objectives_count;
- }
- return $res;
- }
- /**
- * Gets the launch_data field found in imsmanifests (this is SCORM- or AICC-related, really)
- * @return string Launch data as found in imsmanifest and stored in Dokeos (read only). Defaults to ''.
- */
- function get_launch_data(){
- if($this->debug>0){error_log('New LP - In learnpathItem::get_launch_data()',0);}
- if(!empty($this->launch_data)){
- return $this->launch_data;
- }
- return '';
- }
- /**
- * Gets the lesson location
- * @return string lesson location as recorded by the SCORM and AICC elements. Defaults to ''
- */
- function get_lesson_location(){
- if($this->debug>0){error_log('New LP - In learnpathItem::get_lesson_location()',0);}
- if(!empty($this->lesson_location)){return $this->lesson_location;}else{return '';}
- }
- /**
- * Gets the lesson_mode (scorm feature, but might be used by aicc as well as dokeos paths)
- *
- * The "browse" mode is not supported yet (because there is no such way of seeing a sco in Dokeos)
- * @return string 'browse','normal' or 'review'. Defaults to 'normal'
- */
- function get_lesson_mode(){
- $mode = 'normal';
- if($this->get_prevent_reinit() != 0){ //if prevent_reinit == 0
- $my_status = $this->get_status();
- if($my_status != $this->possible_status[0] AND $my_status != $this->possible_status[1]){
- $mode = 'review';
- }
- }
- return $mode;
- }
- /**
- * Gets the depth level
- * @return int Level. Defaults to 0
- */
- function get_level(){
- if($this->debug>0){error_log('New LP - In learnpathItem::get_level()',0);}
- if(empty($this->level)){return 0;}
- return $this->level;
- }
- /**
- * Gets the mastery score
- */
- function get_mastery_score()
- {
- if($this->debug>0){error_log('New LP - In learnpathItem::get_mastery_score()',0);}
- if(isset($this->mastery_score)){return $this->mastery_score;}else{return -1;}
- }
- /**
- * Gets the maximum (score)
- * @return int Maximum score. Defaults to 100 if nothing else is defined
- */
- function get_max(){
- if($this->debug>0){error_log('New LP - In learnpathItem::get_max()',0);}
- if($this->type == 'sco')
- {
- if(!empty($this->view_max_score) and $this->view_max_score>0)
- {
- return $this->view_max_score;
- }
- elseif($this->view_max_score === '')
- {
- return $this->view_max_score;
- }
- else
- {
- if(!empty($this->max_score)){return $this->max_score;}else{return 100;}
- }
- }
- else
- {
- if(!empty($this->max_score)){return $this->max_score;}else{return 100;}
- }
- }
- /**
- * Gets the maximum time allowed for this user in this attempt on this item
- * @return string Time string in SCORM format (HH:MM:SS or HH:MM:SS.SS or HHHH:MM:SS.SS)
- */
- function get_max_time_allowed()
- {
- if($this->debug>0){error_log('New LP - In learnpathItem::get_max_time_allowed()',0);}
- if(!empty($this->max_time_allowed)){return $this->max_time_allowed;}else{return '';}
- }
- /**
- * Gets the minimum (score)
- * @return int Minimum score. Defaults to 0
- */
- function get_min(){
- if($this->debug>0){error_log('New LP - In learnpathItem::get_min()',0);}
- if(!empty($this->min_score)){return $this->min_score;}else{return 0;}
- }
- /**
- * Gets the parent ID
- * @return int Parent ID. Defaults to null
- */
- function get_parent(){
- if($this->debug>0){error_log('New LP - In learnpathItem::get_parent()',0);}
- if(!empty($this->parent))
- {
- return $this->parent;
- }
- //TODO check this return value is valid for children classes (SCORM?)
- return null;
- }
- /**
- * Gets the path attribute.
- * @return string Path. Defaults to ''
- */
- function get_path(){
- if($this->debug>0){error_log('New LP - In learnpathItem::get_path()',0);}
- if(empty($this->path)){return '';}
- return $this->path;
- }
- /**
- * Gets the prerequisites string
- * @return string Empty string or prerequisites string if defined. Defaults to
- */
- function get_prereq_string()
- {
- if($this->debug>0){error_log('New LP - In learnpathItem::get_prereq_string()',0);}
- if(!empty($this->prereq_string))
- {
- return $this->prereq_string;
- }else{
- return '';
- }
- }
- /**
- * Gets the prevent_reinit attribute value (and sets it if not set already)
- * @return int 1 or 0 (defaults to 1)
- */
- function get_prevent_reinit(){
- if($this->debug>2){error_log('New LP - In learnpathItem::get_prevent_reinit()',0);}
- if(!isset($this->prevent_reinit)){
- if(!empty($this->lp_id)){
- $db = Database::get_course_table(TABLE_LP_MAIN);
- $sql = "SELECT * FROM $db WHERE id = ".$this->lp_id;
- $res = @Database::query($sql);
- if(Database::num_rows($res)<1)
- {
- $this->error = "Could not find parent learnpath in learnpath table";
- if($this->debug>2){error_log('New LP - End of learnpathItem::get_prevent_reinit() - Returning false',0);}
- return false;
- }else{
- $row = Database::fetch_array($res);
- $this->prevent_reinit = $row['prevent_reinit'];
- }
- }else{
- $this->prevent_reinit = 1;//prevent reinit is always 1 by default - see learnpath.class.php
- }
- }
- if($this->debug>2){error_log('New LP - End of learnpathItem::get_prevent_reinit() - Returned '.$this->prevent_reinit,0);}
- return $this->prevent_reinit;
- }
- /**
- * Gets the item's reference column
- * @return string The item's reference field (generally used for SCORM identifiers)
- */
- function get_ref()
- {
- return $this->ref;
- }
- /**
- * Gets the list of included resources as a list of absolute or relative paths of
- * resources included in the current item. This allows for a better SCORM export.
- * The list will generally include pictures, flash objects, java applets, or any other
- * stuff included in the source of the current item. The current item is expected
- * to be an HTML file. If it is not, then the function will return and empty list.
- * @param string type (one of the Dokeos tools) - optional (otherwise takes the current item's type)
- * @param string path (absolute file path) - optional (otherwise takes the current item's path)
- * @param int level of recursivity we're in
- * @return array List of file paths. An additional field containing 'local' or 'remote' helps determine if the file should be copied into the zip or just linked
- */
- function get_resources_from_source($type=null,$abs_path=null, $recursivity=1)
- {
- $max = 5;
- if($recursivity > $max)
- {
- return array();
- }
- if(!isset($type))
- {
- $type = $this->get_type();
- }
- if(!isset($abs_path))
- {
- $path = $this->get_file_path();
- $abs_path = api_get_path(SYS_COURSE_PATH).api_get_course_path().'/'.$path;
- //echo "Abs path coming from item : ".$abs_path."<br/>\n";
- }
- /*
- else
- {
- echo "Abs path coming from param: ".$abs_path."<br/>\n";
- }
- */
- //error_log(str_repeat(' ',$recursivity).'Analyse file '.$abs_path,0);
- $files_list = array();
- $type = $this->get_type();
- switch($type)
- {
- case TOOL_DOCUMENT :
- case TOOL_QUIZ:
- case 'sco':
- //get the document and, if HTML, open it
- if(is_file($abs_path))
- {
- //for now, read the whole file in one go (that's gonna be a problem when the file is too big)
- $info = pathinfo($abs_path);
- $ext = $info['extension'];
- switch(strtolower($ext))
- {
- case 'html':
- case 'htm':
- case 'shtml':
- case 'css':
- $wanted_attributes = array('src','url','@import','href','value');
- //parse it for included resources
- $file_content = file_get_contents($abs_path);
- //get an array of attributes from the HTML source
- $attributes = DocumentManager::parse_HTML_attributes($file_content,$wanted_attributes);
- //look at 'src' attributes in this file
- foreach($wanted_attributes as $attr)
- {
- if(isset($attributes[$attr]))
- {
- //find which kind of path these are (local or remote)
- $sources = $attributes[$attr];
- foreach($sources as $source)
- {
- //skip what is obviously not a resource
- if(strpos($source,"+this.")) continue; //javascript code - will still work unaltered
- if(strpos($source,'.')=== false) continue; //no dot, should not be an external file anyway
- if(strpos($source,'mailto:')) continue; //mailto link
- if(strpos($source,';') && !strpos($source,'&')) continue; //avoid code - that should help
- if($attr == 'value')
- {
- if(strpos($source , 'mp3file'))
- {
- $files_list[] = array(substr($source, 0, strpos($source , '.swf')+4),'local','abs');
- $mp3file = substr($source , strpos($source , 'mp3file=')+8);
- if(substr($mp3file,0,1) == '/')
- $files_list[] = array($mp3file,'local','abs');
- else
- $files_list[] = array($mp3file,'local','rel');
- }
- elseif(strpos($source, 'flv=')===0)
- {
- $source = substr($source, 4);
- if(strpos($source, '&')>0)
- {
- $source = substr($source,0,strpos($source, '&'));
- }
- if(strpos($source,'://')>0)
- {
- if(strpos($source,api_get_path(WEB_PATH))!==false)
- {
- //we found the current portal url
- $files_list[] = array($source,'local','url');
- }
- else
- {
- //we didn't find any trace of current portal
- $files_list[] = array($source,'remote','url');
- }
- }
- else
- {
- $files_list[] = array($source,'local','abs');
- }
- continue; //skipping anything else to avoid two entries (while the others can have sub-files in their url, flv's can't)
- }
- }
- if(strpos($source,'://') > 0)
- {
- //cut at '?' in a URL with params
- if(strpos($source,'?')>0)
- {
- $second_part = substr($source,strpos($source,'?'));
- if(strpos($second_part,'://')>0)
- {//if the second part of the url contains a url too, treat the second one before cutting
- $pos1 = strpos($second_part,'=');
- $pos2 = strpos($second_part,'&');
- $second_part = substr($second_part,$pos1+1,$pos2-($pos1+1));
- if(strpos($second_part,api_get_path(WEB_PATH))!==false)
- {
- //we found the current portal url
- $files_list[] = array($second_part,'local','url');
- $in_files_list[] = learnpathItem::get_resources_from_source(TOOL_DOCUMENT,$second_part,$recursivity+1);
- if(count($in_files_list)>0)
- {
- $files_list = array_merge($files_list,$in_files_list);
- }
- }
- else
- {
- //we didn't find any trace of current portal
- $files_list[] = array($second_part,'remote','url');
- }
- }
- elseif(strpos($second_part,'=')>0)
- {
- if(substr($second_part,0,1) === '/')
- { //link starts with a /, making it absolute (relative to DocumentRoot)
- $files_list[] = array($second_part,'local','abs');
- $in_files_list[] = learnpathItem::get_resources_from_source(TOOL_DOCUMENT,$second_part,$recursivity+1);
- if(count($in_files_list)>0)
- {
- $files_list = array_merge($files_list,$in_files_list);
- }
- }
- elseif(strstr($second_part,'..') === 0)
- { //link is relative but going back in the hierarchy
- $files_list[] = array($second_part,'local','rel');
- $dir = dirname($abs_path);
- $new_abs_path = realpath($dir.'/'.$second_part);
- $in_files_list[] = learnpathItem::get_resources_from_source(TOOL_DOCUMENT,$new_abs_path,$recursivity+1);
- if(count($in_files_list)>0)
- {
- $files_list = array_merge($files_list,$in_files_list);
- }
- }
- else
- { //no starting '/', making it relative to current document's path
- if(substr($second_part,0,2) == './')
- {
- $second_part = substr($second_part,2);
- }
- $files_list[] = array($second_part,'local','rel');
- $dir = dirname($abs_path);
- $new_abs_path = realpath($dir.'/'.$second_part);
- $in_files_list[] = learnpathItem::get_resources_from_source(TOOL_DOCUMENT,$new_abs_path,$recursivity+1);
- if(count($in_files_list)>0)
- {
- $files_list = array_merge($files_list,$in_files_list);
- }
- }
- }
- //leave that second part behind now
- $source = substr($source,0,strpos($source,'?'));
- if(strpos($source,'://') > 0)
- {
- if(strpos($source,api_get_path(WEB_PATH))!==false)
- {
- //we found the current portal url
- $files_list[] = array($source,'local','url');
- $in_files_list[] = learnpathItem::get_resources_from_source(TOOL_DOCUMENT,$source,$recursivity+1);
- if(count($in_files_list)>0)
- {
- $files_list = array_merge($files_list,$in_files_list);
- }
- }
- else
- {
- //we didn't find any trace of current portal
- $files_list[] = array($source,'remote','url');
- }
- }
- else
- {
- //no protocol found, make link local
- if(substr($source,0,1) === '/')
- { //link starts with a /, making it absolute (relative to DocumentRoot)
- $files_list[] = array($source,'local','abs');
- $in_files_list[] = learnpathItem::get_resources_from_source(TOOL_DOCUMENT,$source,$recursivity+1);
- if(count($in_files_list)>0)
- {
- $files_list = array_merge($files_list,$in_files_list);
- }
- }
- elseif(strstr($source,'..') === 0)
- { //link is relative but going back in the hierarchy
- $files_list[] = array($source,'local','rel');
- $dir = dirname($abs_path);
- $new_abs_path = realpath($dir.'/'.$source);
- $in_files_list[] = learnpathItem::get_resources_from_source(TOOL_DOCUMENT,$new_abs_path,$recursivity+1);
- if(count($in_files_list)>0)
- {
- $files_list = array_merge($files_list,$in_files_list);
- }
- }
- else
- { //no starting '/', making it relative to current document's path
- if(substr($source,0,2) == './')
- {
- $source = substr($source,2);
- }
- $files_list[] = array($source,'local','rel');
- $dir = dirname($abs_path);
- $new_abs_path = realpath($dir.'/'.$source);
- $in_files_list[] = learnpathItem::get_resources_from_source(TOOL_DOCUMENT,$new_abs_path,$recursivity+1);
- if(count($in_files_list)>0)
- {
- $files_list = array_merge($files_list,$in_files_list);
- }
- }
- }
- }
- //found some protocol there
- if(strpos($source,api_get_path(WEB_PATH))!==false)
- {
- //we found the current portal url
- $files_list[] = array($source,'local','url');
- $in_files_list[] = learnpathItem::get_resources_from_source(TOOL_DOCUMENT,$source,$recursivity+1);
- if(count($in_files_list)>0)
- {
- $files_list = array_merge($files_list,$in_files_list);
- }
- }
- else
- {
- //we didn't find any trace of current portal
- $files_list[] = array($source,'remote','url');
- }
- }
- else
- {
- //no protocol found, make link local
- if(substr($source,0,1) === '/')
- { //link starts with a /, making it absolute (relative to DocumentRoot)
- $files_list[] = array($source,'local','abs');
- $in_files_list[] = learnpathItem::get_resources_from_source(TOOL_DOCUMENT,$source,$recursivity+1);
- if(count($in_files_list)>0)
- {
- $files_list = array_merge($files_list,$in_files_list);
- }
- }
- elseif(strstr($source,'..') === 0)
- { //link is relative but going back in the hierarchy
- $files_list[] = array($source,'local','rel');
- $dir = dirname($abs_path);
- $new_abs_path = realpath($dir.'/'.$source);
- $in_files_list[] = learnpathItem::get_resources_from_source(TOOL_DOCUMENT,$new_abs_path,$recursivity+1);
- if(count($in_files_list)>0)
- {
- $files_list = array_merge($files_list,$in_files_list);
- }
- }
- else
- { //no starting '/', making it relative to current document's path
- if(substr($source,0,2) == './')
- {
- $source = substr($source,2);
- }
- $files_list[] = array($source,'local','rel');
- $dir = dirname($abs_path);
- $new_abs_path = realpath($dir.'/'.$source);
- $in_files_list[] = learnpathItem::get_resources_from_source(TOOL_DOCUMENT,$new_abs_path,$recursivity+1);
- if(count($in_files_list)>0)
- {
- $files_list = array_merge($files_list,$in_files_list);
- }
- }
- }
- }
- }
- }
- break;
- default:
- break;
- }
- }
- else
- {
- //the file could not be found
- return false;
- }
- break;
- default: //ignore
- break;
- }
- //error_log(str_repeat(' ',$recursivity),'found files '.print_r($files_list,true),0);
- //return $files_list;
- $checked_files_list = array();
- $checked_array_list = array();
- foreach($files_list as $idx => $file)
- {
- if(!empty($file[0]))
- {
- if(!in_array($file[0],$checked_files_list))
- {
- $checked_files_list[] = $files_list[$idx][0];
- $checked_array_list[] = $files_list[$idx];
- }
- }
- }
- return $checked_array_list;
- }
- /**
- * Gets the score
- * @return float The current score or 0 if no score set yet
- */
- function get_score(){
- if($this->debug>0){error_log('New LP - In learnpathItem::get_score()',0);}
- $res = 0;
- if(!empty($this->current_score))
- {
- $res = $this->current_score;
- }
- if($this->debug>1){error_log('New LP - Out of learnpathItem::get_score() - returning '.$res,0);}
- return $res;
- }
- /**
- * Gets the item status
- * @param boolean Do or don't check into the database for the latest value. Optional. Default is true
- * @param boolean Do or don't update the local attribute value with what's been found in DB
- * @return string Current status or 'Nnot attempted' if no status set yet
- */
- function get_status($check_db=true,$update_local=false) {
- if($this->debug>0){error_log('New LP - In learnpathItem::get_status() on item '.$this->db_id,0);}
- if($check_db) {
- if($this->debug>2){error_log('New LP - In learnpathItem::get_status(): checking db',0);}
- $table = Database::get_course_table(TABLE_LP_ITEM_VIEW);
- $sql = "SELECT * FROM $table WHERE id = '".$this->db_item_view_id."' AND view_count = '".$this->get_attempt_id()."'";
- if($this->debug>2){error_log('New LP - In learnpathItem::get_status() - Checking DB: '.$sql,0);}
- $res = Database::query($sql);
- if (Database::num_rows($res)==1) {
- $row = Database::fetch_array($res);
- if($update_local==true){
- $this->set_status($row['status']);
- }
- if($this->debug>2){error_log('New LP - In learnpathItem::get_status() - Returning db value '.$row['status'],0);}
- return $row['status'];
- }
- } else {
- if($this->debug>2){error_log('New LP - In learnpathItem::get_status() - in get_status: using attrib',0);}
- if(!empty($this->status)) {
- if($this->debug>2){error_log('New LP - In learnpathItem::get_status() - Returning attrib: '.$this->status,0);}
- return $this->status;
- }
- }
- if($this->debug>2){error_log('New LP - In learnpathItem::get_status() - Returning default '.$this->possible_status[0],0);}
- return $this->possible_status[0];
- }
- /**
- * Gets the suspend data
- */
- function get_suspend_data()
- {
- if($this->debug>0){error_log('New LP - In learnpathItem::get_suspend_data()',0);}
- //TODO : improve cleaning of breaklines ... it works but is it really a beautiful way to do it ?
- if(!empty($this->current_data)){return str_replace(array("\r","\n"),array('\r','\n'),$this->current_data);}else{return '';}
- }
- /**
- * Gets the total time spent on this item view so far
- * @param string Origin of the request. If coming from PHP, send formatted as xxhxx'xx", otherwise use scorm format 00:00:00
- * @param integer Given time is a default time to return formatted
- */
- function get_scorm_time($origin='php',$given_time=null){
- //if($this->debug>0){error_log('New LP - In learnpathItem::get_scorm_time()',0);}
- $h = get_lang('h');
- if(!isset($given_time)){
- if(!empty($this->current_start_time) && is_object($this)){
- if(!empty($this->current_stop_time)){
- $time = $this->current_stop_time - $this->current_start_time;
- }else{
- $time = time() - $this->current_start_time;
- }
- }else{
- if($origin == 'js'){
- return '00:00:00';
- }else{
- return '00'.$h.'00\'00"';
- }
- }
- }else{
- $time = $given_time;
- }
- $hours = $time/3600;
- $mins = ($time%3600)/60;
- $secs = ($time%60);
- if($origin == 'js'){
- $scorm_time = trim(sprintf("%4d:%02d:%02d",$hours,$mins,$secs));
- }else{
- $scorm_time = trim(sprintf("%4d$h%02d'%02d\"",$hours,$mins,$secs));
- }
- return $scorm_time;
- }
- function get_terms()
- {
- $lp_item = Database::get_course_table(TABLE_LP_ITEM);
- $sql = "SELECT * FROM $lp_item WHERE id='".Database::escape_string($this->db_id)."'";
- $res = Database::query($sql);
- $row = Database::fetch_array($res);
- return $row['terms'];
- }
- /**
- * Returns the item's title
- * @return string Title
- */
- function get_title(){
- if($this->debug>0){error_log('New LP - In learnpathItem::get_title()',0);}
- if(empty($this->title)){return '';}
- return $this->title;
- }
- /**
- * Returns the total time used to see that item
- * @return integer Total time
- */
- function get_total_time(){
- if($this->debug>0){error_log('New LP - In learnpathItem::get_total_time()',0);}
- if($this->current_start_time == 0){ //shouldn't be necessary thanks to the open() method
- $this->current_start_time = time();
- }
- //$this->current_stop_time=time();
- $time = $this->current_stop_time - $this->current_start_time;
- if($time < 0){
- return 0;
- }else{
- if($this->debug>2){error_log('New LP - In learnpathItem::get_total_time() - Current stop time = '.$this->current_stop_time.', current start time = '.$this->current_start_time.' Returning '.$time,0);}
- return $time;
- }
- }
- /**
- * Gets the item type
- * @return string The item type (can be doc, dir, sco, asset)
- */
- function get_type()
- {
- $res = 'asset';
- if($this->debug>0){error_log('New LP - In learnpathItem::get_type() on item '.$this->db_id,0);}
- if(!empty($this->type))
- {
- //error_log('In item::get_type() - returning '.$this->type,0);
- $res = $this->type;
- }
- if($this->debug>2){error_log('New LP - In learnpathItem::get_type() - Returning '.$res.' for item '.$this->db_id,0);}
- return $res;
- }
- /**
- * Gets the view count for this item
- */
- function get_view_count(){
- if($this->debug>0){error_log('New LP - In learnpathItem::get_view_count()',0);}
- if(!empty($this->attempt_id)){
- return $this->attempt_id;
- }else{
- return 0;
- }
- }
- /**
- * Tells if an item is done ('completed','passed','succeeded') or not
- * @return bool True if the item is done ('completed','passed','succeeded'), false otherwise
- */
- function is_done(){
- if($this->status_is(array('completed','passed','succeeded'))){
- if($this->debug>2){error_log('New LP - In learnpath::is_done() - Item '.$this->get_id().' is complete',0);}
- return true;
- }else{
- if($this->debug>2){error_log('New LP - In learnpath::is_done() - Item '.$this->get_id().' is not complete',0);}
- return false;
- }
- }
- /**
- * Tells if a restart is allowed (take it from $this->prevent_reinit and $this->status)
- * @return integer -1 if retaking the sco another time for credit is not allowed,
- * 0 if it is not allowed but the item has to be finished
- * 1 if it is allowed. Defaults to 1
- */
- function is_restart_allowed()
- {
- if($this->debug>2){error_log('New LP - In learnpathItem::is_restart_allowed()',0);}
- $restart = 1;
- $mystatus = $this->get_status(true);
- if($this->get_prevent_reinit() > 0){ //if prevent_reinit == 1 (or more)
- //if status is not attempted or incomplete, authorize retaking (of the same) anyway. Otherwise:
- if($mystatus != $this->possible_status[0] AND $mystatus != $this->possible_status[1]){
- $restart = -1;
- }else{
- $restart = 0;
- }
- }else{
- if($mystatus == $this->possible_status[0] OR $mystatus == $this->possible_status[1]){
- $restart = -1;
- }
- }
- if($this->debug>2){error_log('New LP - End of learnpathItem::is_restart_allowed() - Returning '.$restart,0);}
- return $restart;
- }
- /**
- * Opens/launches the item. Initialises runtime values.
- * @return boolean True on success, false on failure.
- */
- function open($allow_new_attempt=false){
- if($this->debug>0){error_log('New LP - In learnpathItem::open()',0);}
- if($this->prevent_reinit == 0)
- {
- $this->current_score = 0;
- $this->current_start_time = time();
- //In this case, as we are opening the item, what is important to us
- //is the database status, in order to know if this item has already
- //been used in the past (rather than just loaded and modified by
- //some javascript but not written in the database).
- //If the database status is different from 'not attempted', we can
- //consider this item has already been used, and as such we can
- //open a new attempt. Otherwise, we'll just reuse the current
- //attempt, which is generally created the first time the item is
- //loaded (for example as part of the table of contents)
- $stat = $this->get_status(true);
- if($allow_new_attempt && isset($stat) && ($stat != $this->possible_status[0]))
- {
- $this->attempt_id = $this->attempt_id + 1; //open a new attempt
- }
- $this->status = $this->possible_status[1];
- }
- else
- {
- /*if($this->current_start_time == 0)
- { //small exception for start time, to avoid amazing values
- $this->current_start_time = time();
- }*/
- // if we don't init start time here, the time is sometimes calculated from the las start time
- $this->current_start_time = time();
-
- //error_log('New LP - reinit blocked by setting',0);
- }
- }
- /**
- * Outputs the item contents
- * @return string HTML file (displayable in an <iframe>) or empty string if no path defined
- */
- function output()
- {
- if($this->debug>0){error_log('New LP - In learnpathItem::output()',0);}
- if(!empty($this->path) and is_file($this->path))
- {
- $output = '';
- $output .= file_get_contents($this->path);
- return $output;
- }
- return '';
- }
- /**
- * Parses the prerequisites string with the AICC logic language
- * @param string The prerequisites string as it figures in imsmanifest.xml
- * @param Array Array of items in the current learnpath object. Although we're in the learnpathItem object, it's necessary to have a list of all items to be able to check the current item's prerequisites
- * @param Array List of references (the "ref" column in the lp_item table) that are strings used in the expression of prerequisites.
- * @param integer The user ID. In some cases like Dokeos quizzes, it's necessary to have the user ID to query other tables (like the results of quizzes)
- * @return boolean True if the list of prerequisites given is entirely satisfied, false otherwise
- */
- function parse_prereq($prereqs_string, $items, $refs_list,$user_id){ if($this->debug>0){error_log('New LP - In learnpathItem::parse_prereq() for learnpath '.$this->lp_id.' with string '.$prereqs_string,0);}
- //deal with &, |, ~, =, <>, {}, ,, X*, () in reverse order
- $this->prereq_alert = '';
- // First parse all parenthesis by using a sequential loop (looking for less-inclusives first)
- if($prereqs_string == '_true_'){return true;}
- if($prereqs_string == '_false_'){
- if(empty($this->prereq_alert)){
- $this->prereq_alert = get_lang('_prereq_not_complete');
- }
- return false;
- }
- while(strpos($prereqs_string,'(')!==false){
- //remove any () set and replace with its value
- $matches = array();
- $res = preg_match_all('/(\(([^\(\)]*)\))/',$prereqs_string,$matches);
- if($res){
- foreach($matches[2] as $id=>$match){
- $str_res = $this->parse_prereq($match,$items,$refs_list,$user_id);
- if($str_res){
- $prereqs_string = str_replace($matches[1][$id],'_true_',$prereqs_string);
- }else{
- $prereqs_string = str_replace($matches[1][$id],'_false_',$prereqs_string);
- }
- }
- }
- }
-
- //parenthesis removed, now look for ORs as it is the lesser-priority binary operator (= always uses one text operand)
- if (strpos($prereqs_string,"|")===false) {
- if($this->debug>1){error_log('New LP - Didnt find any OR, looking for AND',0);}
- if(strpos($prereqs_string,"&")!==false){
- $list = split("&",$prereqs_string);
- if(count($list)>1){
- $andstatus = true;
- foreach($list as $condition){
- $andstatus = $andstatus && $this->parse_prereq($condition,$items,$refs_list,$user_id);
- if($andstatus==false){
- if($this->debug>1){error_log('New LP - One condition in AND was false, short-circuit',0);}
- break;
- }
- }
- if(empty($this->prereq_alert) && !$andstatus){
- $this->prereq_alert = get_lang('_prereq_not_complete');
- }
- return $andstatus;
- } else {
- if(isset($items[$refs_list[$list[0]]])){
- $status = $items[$refs_list[$list[0]]]->get_status(true);
- $returnstatus = (($status == $this->possible_status[2]) OR ($status == $this->possible_status[3]));
- if(empty($this->prereq_alert) && !$returnstatus){
- $this->prereq_alert = get_lang('_prereq_not_complete');
- }
- return $returnstatus;
- }
- $this->prereq_alert = get_lang('_prereq_not_complete');
- return false;
- }
- } else {
- //no ORs found, now look for ANDs
- if($this->debug>1){error_log('New LP - Didnt find any AND, looking for =',0);}
- if(strpos($prereqs_string,"=")!==false){
- if($this->debug>1){error_log('New LP - Found =, looking into it',0);}
- //we assume '=' signs only appear when there's nothing else around
- $params = split('=',$prereqs_string);
- if(count($params) == 2){
- //right number of operands
- if(isset($items[$refs_list[$params[0]]])){
- $status = $items[$refs_list[$params[0]]]->get_status(true);
- $returnstatus = ($status == $params[1]);
- if(empty($this->prereq_alert) && !$returnstatus){
- $this->prereq_alert = get_lang('_prereq_not_complete');
- }
- return $returnstatus;
- }
- $this->prereq_alert = get_lang('_prereq_not_complete');
- return false;
- }
- } else {
- //No ANDs found, look for <>
- if($this->debug>1){error_log('New LP - Didnt find any =, looking for <>',0);}
- if(strpos($prereqs_string,"<>")!==false){
- if($this->debug>1){error_log('New LP - Found <>, looking into it',0);}
- //we assume '<>' signs only appear when there's nothing else around
- $params = split('<>',$prereqs_string);
- if(count($params) == 2){
- //right number of operands
- if(isset($items[$refs_list[$params[0]]])){
- $status = $items[$refs_list[$params[0]]]->get_status(true);
- $returnstatus = ($status != $params[1]);
- if(empty($this->prereq_alert) && !$returnstatus){
- $this->prereq_alert = get_lang('_prereq_not_complete');
- }
- return $returnstatus;
- }
- $this->prereq_alert = get_lang('_prereq_not_complete');
- return false;
- }
- } else {
- //No <> found, look for ~ (unary)
- if($this->debug>1){error_log('New LP - Didnt find any =, looking for ~',0);}
- //only remains: ~ and X*{}
- if(strpos($prereqs_string,"~")!==false){
- //found NOT
- if($this->debug>1){error_log('New LP - Found ~, looking into it',0);}
- $list = array();
- $myres = preg_match('/~([^(\d+\*)\{]*)/',$prereqs_string,$list);
- if($myres){
- $returnstatus = !$this->parse_prereq($list[1],$items,$refs_list,$user_id);
- if(empty($this->prereq_alert) && !$returnstatus){
- $this->prereq_alert = get_lang('_prereq_not_complete');
- }
- return $returnstatus;
- }else{
- //strange...
- if($this->debug>1){error_log('New LP - Found ~ but strange string: '.$prereqs_string,0);}
- }
- } else {
- //Finally, look for sets/groups
- if($this->debug>1){error_log('New LP - Didnt find any ~, looking for groups',0);}
- //only groups here
- $groups = array();
- $groups_there = preg_match_all('/((\d+\*)?\{([^\}]+)\}+)/',$prereqs_string,$groups);
- if($groups_there){
- foreach($groups[1] as $gr) //only take the results that correspond to the big brackets-enclosed condition
- {
- if($this->debug>1){error_log('New LP - Dealing with group '.$gr,0);}
- $multi = array();
- $mycond = false;
- if(preg_match('/(\d+)\*\{([^\}]+)\}/',$gr,$multi)){
- if($this->debug>1){error_log('New LP - Found multiplier '.$multi[0],0);}
- $count = $multi[1];
- $list = split(',',$multi[2]);
- $mytrue = 0;
- foreach($list as $cond){
- if(isset($items[$refs_list[$cond]])){
- $status = $items[$refs_list[$cond]]->get_status(true);
- if (($status == $this->possible_status[2]) OR ($status == $this->possible_status[3])){
- $mytrue ++;
- if($this->debug>1){error_log('New LP - Found true item, counting.. ('.($mytrue).')',0);}
- }
- }else{
- if($this->debug>1){error_log('New LP - item '.$cond.' does not exist in items list',0);}
- }
- }
- if($mytrue >= $count){
- if($this->debug>1){error_log('New LP - Got enough true results, return true',0);}
- $mycond = true;
- }else{
- if($this->debug>1){error_log('New LP - Not enough true results',0);}
- }
- }
- else{
- if($this->debug>1){error_log('New LP - No multiplier',0);}
- $list = split(',',$gr);
- $mycond = true;
- foreach($list as $cond){
- if(isset($items[$refs_list[$cond]])){
- $status = $items[$refs_list[$cond]]->get_status(true);
- if (($status == $this->possible_status[2]) OR ($status == $this->possible_status[3])){
- $mycond = true;
- if($this->debug>1){error_log('New LP - Found true item',0);}
- }else{
- if($this->debug>1){error_log('New LP - Found false item, the set is not true, return false',0);}
- $mycond = false;
- break;
- }
- }else{
- if($this->debug>1){error_log('New LP - item '.$cond.' does not exist in items list',0);}
- if($this->debug>1){error_log('New LP - Found false item, the set is not true, return false',0);}
- $mycond = false;
- break;
- }
- }
- }
- if(!$mycond && empty($this->prereq_alert)){
- $this->prereq_alert = get_lang('_prereq_not_complete');
- }
- return $mycond;
- }
- } else {
- //Nothing found there either. Now return the value of the corresponding resource completion status
- if($this->debug>1){error_log('New LP - Didnt find any group, returning value for '.$prereqs_string,0);}
-
- if (isset($items[$refs_list[$prereqs_string]])) {
- if ($items[$refs_list[$prereqs_string]]->type == 'quiz') {
-
- //1. Checking the status in current items
- $status = $items[$refs_list[$prereqs_string]]->get_status(true);
- //error_log('hello '.$status);
- $returnstatus = (($status == $this->possible_status[2]) OR ($status == $this->possible_status[3]));
-
- if(!$returnstatus) {
- if($this->debug>1){error_log('New LP - Prerequisite '.$prereqs_string.' not complete',0);}
- } else {
- if($this->debug>1){error_log('New LP - Prerequisite '.$prereqs_string.' complete',0);}
- }
-
- //for one attempt LPs
- if ($this->prevent_reinit == 1) {
- //2. If is completed we check the results in the DB of the quiz
- if ($returnstatus) {
- //AND origin_lp_item_id = '.$user_id.'
- $sql = 'SELECT exe_result, exe_weighting
- FROM '.Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_EXERCICES).'
- WHERE exe_exo_id = '.$items[$refs_list[$prereqs_string]]->path.'
- AND exe_user_id = '.$user_id.'
- AND orig_lp_id = '.$this->lp_id.' AND orig_lp_item_id = '.$prereqs_string.'
- AND status <> "incomplete"
- ORDER BY exe_date DESC
- LIMIT 0, 1';
- //error_log('results :'.$items[$refs_list[$prereqs_string]]->path. ':'.$user_id);
-
- $rs_quiz = Database::query($sql);
- if($quiz = Database :: fetch_array($rs_quiz)) {
- if($quiz['exe_result'] >= $items[$refs_list[$prereqs_string]]->get_mastery_score()) {
- $returnstatus = true;
- } else {
- $this->prereq_alert = get_lang('_prereq_not_complete');
- $returnstatus = false;
- }
- } else {
- $this->prereq_alert = get_lang('_prereq_not_complete');
- $returnstatus = false;
- }
- }
-
- } else {
- //2. for multiple attempts we check that there are minimun 1 item completed
-
- //checking in the database
- $sql = 'SELECT exe_result, exe_weighting
- FROM '.Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_EXERCICES).'
- WHERE exe_exo_id = '.$items[$refs_list[$prereqs_string]]->path.'
- AND exe_user_id = '.$user_id.' AND orig_lp_id = '.$this->lp_id.' AND orig_lp_item_id = '.$prereqs_string.' ';
- //error_log('results 2:'.$items[$refs_list[$prereqs_string]]->path. ':'.$user_id);
-
- $rs_quiz = Database::query($sql);
- if (Database::num_rows($rs_quiz) > 0 ) {
- while ($quiz = Database :: fetch_array($rs_quiz)) {
- if($quiz['exe_result'] >= $items[$refs_list[$prereqs_string]]->get_mastery_score()) {
- $returnstatus = true;
- break;
- } else {
- $this->prereq_alert = get_lang('_prereq_not_complete');
- $returnstatus = false;
- }
- }
- } else {
- $this->prereq_alert = get_lang('_prereq_not_complete');
- $returnstatus = false;
- }
-
- }
- return $returnstatus;
- } else {
-
- $status = $items[$refs_list[$prereqs_string]]->get_status(false);
- $returnstatus = (($status == $this->possible_status[2]) OR ($status == $this->possible_status[3]));
- if (!$returnstatus) {
- if($this->debug>1){error_log('New LP - Prerequisite '.$prereqs_string.' not complete',0);}
- } else {
- if($this->debug>1){error_log('New LP - Prerequisite '.$prereqs_string.' complete',0);}
- }
- //error_log('status of document'.$status);
- //var_dump($returnstatus);
- //$returnstatus = true;
- if ($returnstatus && $this->prevent_reinit == 1 ) {
- // i would prefer check in the database
- $lp_item_view = Database::get_course_table(TABLE_LP_ITEM_VIEW);
- $lp_view = Database::get_course_table(TABLE_LP_VIEW);
-
- $sql = 'SELECT id FROM '.$lp_view.'
- WHERE user_id = '.$user_id.' AND lp_id = '.$this->lp_id.' LIMIT 0, 1';
- $rs_lp = Database::query($sql);
- $lp_id = Database :: fetch_row($rs_lp);
- $my_lp_id = $lp_id[0];
-
- $sql = 'SELECT status FROM '.$lp_item_view.'
- WHERE lp_view_id = '.$my_lp_id.' AND lp_item_id = '.$refs_list[$prereqs_string].' LIMIT 0, 1';
- $rs_lp = Database::query($sql);
- $status_array = Database :: fetch_row($rs_lp);
- $status = $status_array[0];
-
- //var_dump($status);
- $returnstatus = (($status == $this->possible_status[2]) OR ($status == $this->possible_status[3]));
- if (!$returnstatus && empty($this->prereq_alert)){
- $this->prereq_alert = get_lang('_prereq_not_complete');
- }
- if (!$returnstatus){
- if($this->debug>1){error_log('New LP - Prerequisite '.$prereqs_string.' not complete',0);}
- } else {
- if($this->debug>1){error_log('New LP - Prerequisite '.$prereqs_string.' complete',0);}
- }
- }
-
- //error_log('results :'.$items[$refs_list[$prereqs_string]]->path. ':'.$user_id);
- /*$rs_quiz = Database::query($sql);
- if($quiz = Database :: fetch_array($rs_quiz))
- {
- if($quiz['exe_result'] >= $items[$refs_list[$prereqs_string]]->get_mastery_score())
- {
- $returnstatus = true;
- }
- else
- {
- $this->prereq_alert = get_lang('_prereq_not_complete');
- $returnstatus = false;
- }
- }
- else
- {
- $this->prereq_alert = get_lang('_prereq_not_complete');
- $returnstatus = false;
- }*/
-
- /*
- $status = $items[$refs_list[$prereqs_string]]->get_status(true);
- //error_log(print_r($items,1));
- //error_log($refs_list[$prereqs_string]);
-
- $returnstatus = (($status == $this->possible_status[2]) OR ($status == $this->possible_status[3]));
- if(!$returnstatus && empty($this->prereq_alert)){
- $this->prereq_alert = get_lang('_prereq_not_complete');
- }
- if(!$returnstatus){
- if($this->debug>1){error_log('New LP - Prerequisite '.$prereqs_string.' not complete',0);}
- }else{
- if($this->debug>1){error_log('New LP - Prerequisite '.$prereqs_string.' complete',0);}
- }
- */
-
- //$returnstatus =false;
- return $returnstatus;
- }
- } else {
- if($this->debug>1){error_log('New LP - Could not find '.$prereqs_string.' in '.print_r($refs_list,true),0);}
- }
- }
- }
- }
- }
- }
- } else {
- $list = split("\|",$prereqs_string);
- if(count($list)>1){
- if($this->debug>1){error_log('New LP - Found OR, looking into it',0);}
- $orstatus = false;
- foreach($list as $condition){
- if($this->debug>1){error_log('New LP - Found OR, adding it ('.$condition.')',0);}
- $orstatus = $orstatus || $this->parse_prereq($condition,$items,$refs_list,$user_id);
- if($orstatus == true){
- //shortcircuit OR
- if($this->debug>1){error_log('New LP - One condition in OR was true, short-circuit',0);}
- break;
- }
- }
- if(!$orstatus && empty($this->prereq_alert)){
- $this->prereq_alert = get_lang('_prereq_not_complete');
- }
- return $orstatus;
- }else{
- if($this->debug>1){error_log('New LP - OR was found but only one elem present !?',0);}
- if(isset($items[$refs_list[$list[0]]])){
- $status = $items[$refs_list[$list[0]]]->get_status(true);
- $returnstatus = (($status == 'completed') OR ($status == 'passed'));
- if(!$returnstatus && empty($this->prereq_alert)){
- $this->prereq_alert = get_lang('_prereq_not_complete');
- }
- return $returnstatus;
- }
- }
- }
- if(empty($this->prereq_alert)){
- $this->prereq_alert = get_lang('_prereq_not_complete');
- }
- if($this->debug>1){error_log('New LP - End of parse_prereq. Error code is now '.$this->prereq_alert,0);}
- return false;
- }
- /**
- * Reinits all local values as the learnpath is restarted
- * @return boolean True on success, false otherwise
- */
- function restart()
- {
- if($this->debug>0){error_log('New LP - In learnpathItem::restart()',0);}
- $this->save();
- $allowed = $this->is_restart_allowed();
- if($allowed === -1){
- //nothing allowed, do nothing
- }elseif($allowed === 1){
- //restart as new attempt is allowed, record a new attempt
- $this->attempt_id = $this->attempt_id + 1; //simply reuse the previous attempt_id
- $this->current_score = 0;
- $this->current_start_time = 0;
- $this->current_stop_time = 0;
- $this->current_data = '';
- $this->status = $this->possible_status[0];
- $this->interactions_count = 0;
- $this->interactions = array();
- $this->objectives_count = 0;
- $this->objectives = array();
- $this->lesson_location = '';
- if ($this->type != TOOL_QUIZ) {
- $this->write_to_db();
- }
- }else{
- //restart current element is allowed (because it's not finished yet),
- // reinit current
- $this->current_score = 0;
- $this->current_start_time = 0;
- $this->current_stop_time = 0;
- $this->current_data = '';
- $this->status = $this->possible_status[0];
- $this->interactions_count = $this->get_interactions_count(true);
- }
- return true;
- }
- /**
- * Saves data in the database
- * @param boolean Save from URL params (1) or from object attributes (0)
- * @param boolean The results of a check on prerequisites for this item. True if prerequisites are completed, false otherwise. Defaults to false. Only used if not sco or au
- * @return boolean True on success, false on failure
- */
- function save($from_outside=true,$prereqs_complete=false)
- {
- if($this->debug>0){error_log('New LP - In learnpathItem::save()',0);}
- //$item_view_table = Database::get_course_table(COURSEID,LEARNPATH_ITEM_VIEW_TABLE);
- $item_id = $this->get_id();
- //first check if parameters passed via GET can be saved here
- //in case it's a SCORM, we should get:
- if($this->type == 'sco' || $this->type== 'au'){
- $s = $this->get_status(true);
- if($this->prevent_reinit == 1 AND
- $s != $this->possible_status[0] AND $s != $this->possible_status[1]){
- if($this->debug>1){error_log('New LP - In learnpathItem::save() - save reinit blocked by setting',0);}
- //do nothing because the status has already been set. Don't allow it to change.
- //TODO check there isn't a special circumstance where this should be saved
- }else{
- if($this->debug>1){error_log('New LP - In learnpathItem::save() - SCORM save request received',0);}
- //get all new settings from the URL
- if($from_outside==true){
- if($this->debug>1){error_log('New LP - In learnpathItem::save() - Getting item data from outside',0);}
- foreach($_GET as $param => $value)
- {
- $value = Database::escape_string($value);
- switch($param){
- case 'score':
- $this->set_score($value);
- if($this->debug>2){error_log('New LP - In learnpathItem::save() - setting score to '.$value,0);}
- break;
- case 'max':
- $this->set_max_score($value);
- if($this->debug>2){error_log('New LP - In learnpathItem::save() - setting view_max_score to '.$value,0);}
- break;
- case 'min':
- $this->min_score = $value;
- if($this->debug>2){error_log('New LP - In learnpathItem::save() - setting min_score to '.$value,0);}
- break;
- case 'lesson_status':
- if(!empty($value)){
- $this->set_status($value);
- if($this->debug>2){error_log('New LP - In learnpathItem::save() - setting status to '.$value,0);}
- }
- break;
- case 'time':
- $this->set_time($value);
- if($this->debug>2){error_log('New LP - In learnpathItem::save() - setting time to '.$value,0);}
- break;
- case 'suspend_data':
- $this->current_data = $value;
- if($this->debug>2){error_log('New LP - In learnpathItem::save() - setting suspend_data to '.$value,0);}
- break;
- case 'lesson_location':
- $this->set_lesson_location($value);
- if($this->debug>2){error_log('New LP - In learnpathItem::save() - setting lesson_location to '.$value,0);}
- break;
- case 'core_exit':
- $this->set_core_exit($value);
- if($this->debug>2){error_log('New LP - In learnpathItem::save() - setting core_exit to '.$value,0);}
- break;
- case 'interactions':
- //$interactions = unserialize($value);
- //foreach($interactions as $interaction){
- // ;
- //}
- break;
- case 'objectives':
- break;
- //case 'maxtimeallowed':
- // $this->set_max_time_allowed($value);
- // break;
- /*
- case 'objectives._count':
- $this->attempt_id = $value;
- break;
- */
- default:
- //ignore
- break;
- }
- }
- }else{
- if($this->debug>1){error_log('New LP - In learnpathItem::save() - Using inside item status',0);}
- //do nothing, just let the local attributes be used
- }
- }
- }else{ //if not SCO, such messages should not be expected
- $type = strtolower($this->type);
- switch($type){
- case 'asset':
- if($prereqs_complete)
- {
- $this->set_status($this->possible_status[2]);
- }
- break;
- case TOOL_HOTPOTATOES:
- case TOOL_QUIZ: return false;break;
- default:
- //for now, everything that is not sco and not asset is set to
- //completed when saved
- if($prereqs_complete)
- {
- $this->set_status($this->possible_status[2]);
- }
- break;
- }
- }
- //$time = $this->time
- if($this->debug>1){error_log('New LP - End of learnpathItem::save() - Calling write_to_db()',0);}
- return $this->write_to_db();
- }
- /**
- * Sets the number of attempt_id to a given value
- * @param integer The given value to set attempt_id to
- * @return boolean TRUE on success, FALSE otherwise
- */
- function set_attempt_id($num)
- {
- if($this->debug>0){error_log('New LP - In learnpathItem::set_attempt_id()',0);}
- if($num == strval(intval($num)) && $num>=0){
- $this->attempt_id = $num;
- return true;
- }
- return false;
- }
- /**
- * Sets the core_exit value to the one given
- */
- function set_core_exit($value)
- {
- switch($value){
- case '':
- $this->core_exit = '';
- break;
- case 'suspend':
- $this->core_exit = 'suspend';
- break;
- default:
- $this->core_exit = 'none';
- break;
- }
- return true;
- }
- /**
- * Sets the item's description
- * @param string Description
- */
- function set_description($string=''){
- if($this->debug>0){error_log('New LP - In learnpathItem::set_description()',0);}
- if(!empty($string)){$this->description = $string;}
- }
- /**
- * Sets the lesson_location value
- * @param string lesson_location as provided by the SCO
- * @return boolean True on success, false otherwise
- */
- function set_lesson_location($location)
- {
- if($this->debug>0){error_log('New LP - In learnpathItem::set_lesson_location()',0);}
- if(isset($location)){
- $this->lesson_location = Database::escape_string($location);
- return true;
- }
- return false;
- }
- /**
- * Sets the item's depth level in the LP tree (0 is at root)
- * @param integer Level
- */
- function set_level($int=0){
- if($this->debug>0){error_log('New LP - In learnpathItem::set_level('.$int.')',0);}
- if(!empty($int) AND $int == strval(intval($int))){$this->level = $int;}
- }
- /**
- * Sets the lp_view id this item view is registered to
- * @param integer lp_view DB ID
- * @todo //todo insert into lp_item_view if lp_view not exists
- */
- function set_lp_view($lp_view_id)
- {
- if($this->debug>0){error_log('New LP - In learnpathItem::set_lp_view('.$lp_view_id.')',0);}
- if(!empty($lp_view_id) and $lp_view_id = intval(strval($lp_view_id)))
- {
- $this->view_id = $lp_view_id;
- $item_view_table = Database::get_course_table(TABLE_LP_ITEM_VIEW);
- //get the lp_item_view with the highest view_count
- $sql = "SELECT * FROM $item_view_table WHERE lp_item_id = ".$this->get_id()." " .
- " AND lp_view_id = ".$lp_view_id." ORDER BY view_count DESC";
- if($this->debug>2){error_log('New LP - In learnpathItem::set_lp_view() - Querying lp_item_view: '.$sql,0);}
- $res = Database::query($sql);
- if(Database::num_rows($res)>0){
- $row = Database::fetch_array($res);
- $this->db_item_view_id = $row['id'];
- $this->attempt_id = $row['view_count'];
- $this->current_score = $row['score'];
- $this->current_data = $row['suspend_data'];
- $this->view_max_score = $row['max_score'];
- //$this->view_min_score = $row['min_score'];
- $this->status = $row['status'];
- $this->current_start_time = $row['start_time'];
- $this->current_stop_time = $this->current_start_time + $row['total_time'];
- $this->lesson_location = $row['lesson_location'];
- $this->core_exit = $row['core_exit'];
- if($this->debug>2){error_log('New LP - In learnpathItem::set_lp_view() - Updated item object with database values',0);}
- //now get the number of interactions for this little guy
- $item_view_interaction_table = Database::get_course_table(TABLE_LP_IV_INTERACTION);
- $sql = "SELECT * FROM $item_view_interaction_table WHERE lp_iv_id = '".$this->db_item_view_id."'";
- $res = Database::query($sql);
- if($res !== false){
- $this->interactions_count = Database::num_rows($res);
- }else{
- $this->interactions_count = 0;
- }
- //now get the number of objectives for this little guy
- $item_view_objective_table = Database::get_course_table(TABLE_LP_IV_OBJECTIVE);
- $sql = "SELECT * FROM $item_view_objective_table WHERE lp_iv_id = '".$this->db_item_view_id."'";
- $res = Database::query($sql);
- if($res !== false){
- $this->objectives_count = Database::num_rows($res);
- }else{
- $this->objectives_count = 0;
- }
- }
- }
- //end
- if($this->debug>2){error_log('New LP - End of learnpathItem::set_lp_view()',0);}
- }
- /**
- * Sets the path
- * @param string Path
- */
- function set_path($string=''){
- if($this->debug>0){error_log('New LP - In learnpathItem::set_path()',0);}
- if(!empty($string)){$this->path = $string;}
- }
- /**
- * Sets the prevent_reinit attribute. This is based on the LP value and is set at creation time for
- * each learnpathItem. It is a (bad?) way of avoiding a reference to the LP when saving an item.
- * @param integer 1 for "prevent", 0 for "don't prevent" saving freshened values (new "not attempted" status etc)
- */
- function set_prevent_reinit($prevent){
- if($this->debug>0){error_log('New LP - In learnpathItem::set_prevent_reinit()',0);}
- if($prevent){
- $this->prevent_reinit = 1;
- }else{
- $this->prevent_reinit = 0;
- }
- }
- /**
- * Sets the score value. If the mastery_score is set and the score reaches
- * it, then set the status to 'passed'.
- * @param float Score
- * @return boolean True on success, false otherwise
- */
- function set_score($score)
- {
- if($this->debug>0){error_log('New LP - In learnpathItem::set_score('.$score.')',0);}
- if(($this->max_score<=0 || $score <= $this->max_score) && ($score >= $this->min_score))
- {
- $this->current_score = $score;
- $master = $this->get_mastery_score();
- $current_status = $this->get_status(false);
- //if mastery_score is set AND the current score reaches the mastery score AND the current status is different from 'completed', then set it to 'passed'
- if($master != -1 && $this->current_score >= $master && $current_status != $this->possible_status[2])
- {
- $this->set_status($this->possible_status[3]);
- }
- elseif($master != -1 && $this->current_score<$master)
- {
- $this->set_status($this->possible_status[4]);
- }
- return true;
- }
- return false;
- }
- /**
- * Sets the maximum score for this item
- * @param int Maximum score - must be a decimal or an empty string
- * @return boolean True on success, false on error
- */
- function set_max_score($score)
- {
- if($this->debug>0){error_log('New LP - In learnpathItem::set_max_score('.$score.')',0);}
- if(is_int($score) or $score == '')
- {
- $this->view_max_score = Database::escape_string($score);
- if($this->debug>1){error_log('New LP - In learnpathItem::set_max_score() - Updated object score of item '.$this->db_id.' to '.$this->view_max_score,0);}
- return true;
- }
- return false;
- }
- /**
- * Sets the status for this item
- * @param string Status - must be one of the values defined in $this->possible_status
- * @return boolean True on success, false on error
- */
- function set_status($status)
- {
- if($this->debug>0){error_log('New LP - In learnpathItem::set_status('.$status.')',0);}
- $found = false;
- foreach($this->possible_status as $possible){
- if(preg_match('/^'.$possible.'$/i',$status)){
- $found = true;
- }
- }
- //if(in_array($status,$this->possible_status))
- if($found)
- {
- $this->status = Database::escape_string($status);
- if($this->debug>1){error_log('New LP - In learnpathItem::set_status() - Updated object status of item '.$this->db_id.' to '.$this->status,0);}
- return true;
- }
- //error_log('New LP - '.$status.' was not in the possible status',0);
- $this->status = $this->possible_status[0];
- return false;
- }
- /**
- * Set the terms for this learnpath item
- * @param string Terms, as a comma-split list
- * @return boolean Always return true
- */
- function set_terms($terms) {
- global $charset;
- $lp_item = Database::get_course_table(TABLE_LP_ITEM);
- require_once(api_get_path(LIBRARY_PATH).'search/DokeosIndexer.class.php');
- $a_terms = split(',',$terms);
- $i_terms = split(',',$this->get_terms());
- foreach ( $i_terms as $term ) {
- if ( !in_array($term,$a_terms) ) { array_push($a_terms,$term); }
- }
- $new_terms = $a_terms;
- $new_terms_string = implode(',',$new_terms);
- $terms_update_sql='';
- //TODO: validate csv string
- $terms_update_sql = "UPDATE $lp_item SET terms = '". Database::escape_string(api_htmlentities($new_terms_string, ENT_QUOTES, $charset)) . "' WHERE id=".$this->get_id();
- $res = Database::query($terms_update_sql);
- // save it to search engine
- if (api_get_setting('search_enabled') == 'true') {
- $di = new DokeosIndexer();
- $di->update_terms($this->get_search_did(), $new_terms);
- }
- return true;
- }
- /**
- * Get the document ID from inside the text index database
- * @return int Search index database document ID
- */
- function get_search_did()
- {
- return $this->search_did;
- }
- /**
- * Sets the item viewing time in a usable form, given that SCORM packages often give it as 00:00:00.0000
- * @param string Time as given by SCORM
- */
- function set_time($scorm_time,$format='scorm')
- {
- if($this->debug>0){error_log('New LP - In learnpathItem::set_time('.$scorm_time.')',0);}
- if($scorm_time == 0 and ($this->type!='sco') and $this->current_start_time!=0){
- $my_time = time() - $this->current_start_time;
- if($my_time > 0){
- $this->update_time($my_time);
- if($this->debug>0){error_log('New LP - In learnpathItem::set_time('.$scorm_time.') - found asset - set time to '.$my_time,0);}
- }
- }else{
- if($format == 'scorm'){
- $res = array();
- if(preg_match('/^(\d{1,4}):(\d{2}):(\d{2})(\.\d{1,4})?/',$scorm_time,$res)){
- $time = time();
- $hour = $res[1];
- $min = $res[2];
- $sec = $res[3];
- //getting total number of seconds spent
- $total_sec = $hour*3600 + $min*60 + $sec;
- $this->update_time($total_sec);
- }
- }elseif($format == 'int'){
- $this->update_time($scorm_time);
- }
- }
- }
- /**
- * Sets the item's title
- * @param string Title
- */
- function set_title($string=''){
- if($this->debug>0){error_log('New LP - In learnpathItem::set_title()',0);}
- if(!empty($string)){$this->title = $string;}
- }
- /**
- * Sets the item's type
- * @param string Type
- */
- function set_type($string=''){
- if($this->debug>0){error_log('New LP - In learnpathItem::set_type()',0);}
- if(!empty($string)){$this->type = $string;}
- }
- /**
- * Checks if the current status is part of the list of status given
- * @param strings_array An array of status to check for. If the current status is one of the strings, return true
- * @return boolean True if the status was one of the given strings, false otherwise
- */
- function status_is($list=array())
- {
- if($this->debug>1){error_log('New LP - In learnpathItem::status_is('.print_r($list,true).') on item '.$this->db_id,0);}
- $mystatus = $this->get_status(true);
- if(empty($mystatus)){
- return false;
- }
- $found = false;
- foreach($list as $status)
- {
- if(preg_match('/^'.$status.'$/i',$mystatus))
- {
- if($this->debug>2){error_log('New LP - learnpathItem::status_is() - Found status '.$status.' corresponding to current status',0);}
- $found = true;
- return $found;
- }
- }
- if($this->debug>2){error_log('New LP - learnpathItem::status_is() - Status '.$mystatus.' did not match request',0);}
- return $found;
- }
- /**
- * Updates the time info according to the given session_time
- * @param integer Time in seconds
- * //TODO @TODO make this method better by allowing better/multiple time slices
- */
- function update_time($total_sec=0){
- if($this->debug>0){error_log('New LP - In learnpathItem::update_time('.$total_sec.')',0);}
- if($total_sec>=0){
- //getting start time from finish time. The only problem in the calculation is it might be
- //modified by the scripts processing time
- $now = time();
- $start = $now-$total_sec;
- $this->current_start_time = $start;
- $this->current_stop_time = $now;
- /*if(empty($this->current_start_time)){
- $this->current_start_time = $start;
- $this->current_stop_time = $now;
- }else{
- //if($this->current_stop_time != $this->current_start_time){
- //if the stop time has already been set before to something else
- //than the start time, add the given time to what's already been
- //recorder.
- //This is the SCORM way of doing things, because the time comes from
- //core.session_time, not core.total_time
- // UPDATE: adding time to previous time is only done on SCORM's finish()
- // call, not normally, so for now ignore this section
- // $this->current_stop_time = $this->current_stop_time + $stop;
- // error_log('New LP - Adding '.$stop.' seconds - now '.$this->current_stop_time,0);
- //}else{
- //if no previous stop time set, use the one just calculated now from
- //start time
- //$this->current_start_time = $start;
- //$this->current_stop_time = $now;
- //error_log('New LP - Setting '.$stop.' seconds - now '.$this->current_stop_time,0);
- //}
- }*/
- }
- }
- /**
- * Write objectives to DB. This method is separate from write_to_db() because otherwise
- * objectives are lost as a side effect to AJAX and session concurrent access
- * @return boolean True or false on error
- */
- function write_objectives_to_db()
- {
- if($this->debug>0){error_log('New LP - In learnpathItem::write_objectives_to_db()',0);}
- if(is_array($this->objectives) && count($this->objectives)>0){
- //save objectives
- $tbl = Database::get_course_table(TABLE_LP_ITEM_VIEW);
- $sql = "SELECT id FROM $tbl " .
- "WHERE lp_item_id = ".$this->db_id." " .
- "AND lp_view_id = ".$this->view_id." " .
- "AND view_count = ".$this->attempt_id;
- $res = Database::query($sql);
- if(Database::num_rows($res)>0){
- $row = Database::fetch_array($res);
- $lp_iv_id = $row[0];
- if($this->debug>2){error_log('New LP - In learnpathItem::write_to_db() - Got item_view_id '.$lp_iv_id.', now checking objectives ',0);}
- foreach($this->objectives as $index => $objective){
- $iva_table = Database::get_course_table(TABLE_LP_IV_OBJECTIVE);
- $iva_sql = "SELECT id FROM $iva_table " .
- "WHERE lp_iv_id = $lp_iv_id " .
- //"AND order_id = $index";
- //also check for the objective ID as it must be unique for this SCO view
- "AND objective_id = '".Database::escape_string($objective[0])."'";
- $iva_res = Database::query($iva_sql);
- //id(0), type(1), time(2), weighting(3),correct_responses(4),student_response(5),result(6),latency(7)
- if(Database::num_rows($iva_res)>0){
- //update (or don't)
- $iva_row = Database::fetch_array($iva_res);
- $iva_id = $iva_row[0];
- $ivau_sql = "UPDATE $iva_table " .
- "SET objective_id = '".Database::escape_string($objective[0])."'," .
- "status = '".Database::escape_string($objective[1])."'," .
- "score_raw = '".Database::escape_string($objective[2])."'," .
- "score_min = '".Database::escape_string($objective[4])."'," .
- "score_max = '".Database::escape_string($objective[3])."' " .
- "WHERE id = $iva_id";
- $ivau_res = Database::query($ivau_sql);
- //error_log($ivau_sql,0);
- }else{
- //insert new one
- $ivai_sql = "INSERT INTO $iva_table " .
- "(lp_iv_id, order_id, objective_id, status, score_raw, score_min, score_max )" .
- "VALUES" .
- "(".$lp_iv_id.", ".$index.",'".Database::escape_string($objective[0])."','".Database::escape_string($objective[1])."'," .
- "'".Database::escape_string($objective[2])."','".Database::escape_string($objective[4])."','".Database::escape_string($objective[3])."')";
- $ivai_res = Database::query($ivai_sql);
- //error_log($ivai_sql);
- }
- }
- }
- }
- else
- {
- //error_log('no objective to save: '.print_r($this->objectives,1));
- }
- }
- /**
- * Writes the current data to the database
- * @return boolean Query result
- */
- function write_to_db()
- {
- // check the session visibility
- if (!api_is_allowed_to_session_edit()) {
- return false;
- }
- if($this->debug>0){error_log('New LP - In learnpathItem::write_to_db()',0);}
- $mode = $this->get_lesson_mode();
- $credit = $this->get_credit();
- $my_verified_status=$this->get_status(false);
- $item_view_table = Database::get_course_table(TABLE_LP_ITEM_VIEW);
- $sql_verified='SELECT status FROM '.$item_view_table.' WHERE lp_item_id="'.$this->db_id.'" AND lp_view_id="'.$this->view_id.'" AND view_count="'.$this->attempt_id.'" ;';
- $rs_verified=Database::query($sql_verified);
- $row_verified=Database::fetch_array($rs_verified);
- $my_case_completed=array('completed','passed','browsed','failed');//added by isaac flores
- if (in_array($sql_verified['status'],$my_case_completed)) {
- $save=false;
- } else {
- $save=true;
- }
- if (($save===false && $this->type == 'sco') ||(($this->type == 'sco') && ($credit == 'no-credit' OR $mode == 'review' OR $mode == 'browse')))
- {
- //this info shouldn't be saved as the credit or lesson mode info prevent it
- if($this->debug>1){error_log('New LP - In learnpathItem::write_to_db() - credit('.$credit.') or lesson_mode('.$mode.') prevent recording!',0);}
- } else {
- //check the row exists
- $inserted = false;
- // this a special case for multiple attempts and Dokeos exercises
- if ($this->type == 'quiz' && $this->get_prevent_reinit()==0 && $this->get_status()=='completed') {
- // we force the item to be restarted
- $this->restart();
- $sql = "INSERT INTO $item_view_table " .
- "(total_time, " .
- "start_time, " .
- "score, " .
- "status, " .
- "max_score, ".
- "lp_item_id, " .
- "lp_view_id, " .
- "view_count, " .
- "suspend_data, " .
- //"max_time_allowed," .
- "lesson_location)" .
- "VALUES" .
- "(".$this->get_total_time()."," .
- "".$this->current_start_time."," .
- "".$this->get_score()."," .
- "'".$this->get_status(false)."'," .
- "'".$this->get_max()."'," .
- "".$this->db_id."," .
- "".$this->view_id."," .
- "".$this->get_attempt_id()."," .
- "'".Database::escape_string($this->current_data)."'," .
- //"'".$this->get_max_time_allowed()."'," .
- "'".$this->lesson_location."')";
- if($this->debug>2){error_log('New LP - In learnpathItem::write_to_db() - Inserting into item_view forced: '.$sql,0);}
- $res = Database::query($sql);
- $this->db_item_view_id = Database::insert_id();
- $inserted = true;
- }
- $item_view_table = Database::get_course_table(TABLE_LP_ITEM_VIEW);
- $check = "SELECT * FROM $item_view_table " .
- "WHERE lp_item_id = ".$this->db_id. " " .
- "AND lp_view_id = ".$this->view_id. " ".
- "AND view_count = ".$this->get_attempt_id();
- if($this->debug>2){error_log('New LP - In learnpathItem::write_to_db() - Querying item_view: '.$check,0);}
- $check_res = Database::query($check);
- //depending on what we want (really), we'll update or insert a new row
- //now save into DB
- $res = 0;
- if( $inserted==false && Database::num_rows($check_res)<1){
- /*$my_status = '';
- if ($this->type!=TOOL_QUIZ) {
- $my_status = $this->get_status(false);
- }*/
- $sql = "INSERT INTO $item_view_table " .
- "(total_time, " .
- "start_time, " .
- "score, " .
- "status, " .
- "max_score, ".
- "lp_item_id, " .
- "lp_view_id, " .
- "view_count, " .
- "suspend_data, " .
- //"max_time_allowed," .
- "lesson_location)" .
- "VALUES" .
- "(".$this->get_total_time()."," .
- "".$this->current_start_time."," .
- "".$this->get_score()."," .
- "'".$this->get_status(false)."'," .
- "'".$this->get_max()."'," .
- "".$this->db_id."," .
- "".$this->view_id."," .
- "".$this->get_attempt_id()."," .
- "'".Database::escape_string($this->current_data)."'," .
- //"'".$this->get_max_time_allowed()."'," .
- "'".$this->lesson_location."')";
- if($this->debug>2){error_log('New LP - In learnpathItem::write_to_db() - Inserting into item_view: '.$sql,0);}
- $res = Database::query($sql);
- $this->db_item_view_id = Database::insert_id();
- } else {
- $sql = '';
- if($this->type=='hotpotatoes') {
- //make an exception for HotPotatoes, don't update the score
- //because it has been saved outside of this tool
- $sql = "UPDATE $item_view_table " .
- "SET total_time = ".$this->get_total_time().", " .
- " start_time = ".$this->get_current_start_time().", " .
- " score = ".$this->get_score().", " .
- " status = '".$this->get_status(false)."'," .
- " max_score = '".$this->get_max()."'," .
- " suspend_data = '".Database::escape_string($this->current_data)."'," .
- " lesson_location = '".$this->lesson_location."' " .
- "WHERE lp_item_id = ".$this->db_id." " .
- "AND lp_view_id = ".$this->view_id." " .
- "AND view_count = ".$this->attempt_id;
- } else {
- //for all other content types...
- if ($this->type=='quiz') {
- $my_status = ' ';
- $total_time = ' ';
- if (!empty($_REQUEST['exeId'])) {
- $TBL_TRACK_EXERCICES = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_EXERCICES);
- $safe_exe_id = Database::escape_string($_REQUEST['exeId']);
- $sql = 'SELECT start_date,exe_date FROM ' . $TBL_TRACK_EXERCICES . ' WHERE exe_id = '.(int)$safe_exe_id;
- $res = Database::query($sql);
- $row_dates = Database::fetch_array($res);
- $time_start_date = convert_mysql_date($row_dates['start_date']);
- $time_exe_date = convert_mysql_date($row_dates['exe_date']);
- $mytime = ((int)$time_exe_date-(int)$time_start_date);
- $total_time =" total_time = ".$mytime.", ";
- }
- } else {
- $my_type_lp=learnpath::get_type_static($this->lp_id);
- // this is a array containing values finished
- $case_completed=array('completed','passed','browsed');
- //is not multiple attempts
- if ($this->get_prevent_reinit()==1) {
- // process of status verified into data base
- $sql_verified='SELECT status FROM '.$item_view_table.' WHERE lp_item_id="'.$this->db_id.'" AND lp_view_id="'.$this->view_id.'" AND view_count="'.$this->attempt_id.'" ;';
- $rs_verified=Database::query($sql_verified);
- $row_verified=Database::fetch_array($rs_verified);
- //get type lp: 1=lp dokeos and 2=scorm
- // if not is completed or passed or browsed and learning path is scorm
- if(!in_array($this->get_status(false),$case_completed) && $my_type_lp==2 ) {//&& $this->type!='dir'
- $total_time =" total_time = total_time +".$this->get_total_time().", ";
- $my_status = " status = '".$this->get_status(false)."' ,";
- } else {
- //verified into data base
- if (!in_array($row_verified['status'],$case_completed) && $my_type_lp==2 ) { //&& $this->type!='dir'
- $total_time =" total_time = total_time +".$this->get_total_time().", ";
- $my_status = " status = '".$this->get_status(false)."' ,";
- } elseif (in_array($row_verified['status'],$case_completed) && $my_type_lp==2 && $this->type!='sco' ) {//&& $this->type!='dir'
- $total_time =" total_time = total_time +".$this->get_total_time().", ";
- $my_status = " status = '".$this->get_status(false)."' ,";
- }else {
- //&& !in_array($row_verified['status'],$case_completed)
- //is lp dokeos
- if ($my_type_lp==1 && $this->type!='chapter') {
- $total_time =" total_time = total_time + ".$this->get_total_time().", ";
- $my_status = " status = '".$this->get_status(false)."' ,";
- }
- }
- }
- } else {
- // is multiple attempts
- if (in_array($this->get_status(false),$case_completed) && $my_type_lp==2) {
- //reset zero new attempt ?
- $my_status = " status = '".$this->get_status(false)."' ,";
- } elseif (!in_array($this->get_status(false),$case_completed) && $my_type_lp==2){
- $total_time =" total_time = ".$this->get_total_time().", ";
- $my_status = " status = '".$this->get_status(false)."' ,";
- } else {
- //is dokeos LP
- $total_time =" total_time = total_time +".$this->get_total_time().", ";
- $my_status = " status = '".$this->get_status(false)."' ,";
- }
- //code added by isaac flores
- //this code line fix the problem of wrong status
- if ( $my_type_lp==2) {
- //verify current status in multiples attempts
- $sql_status='SELECT status FROM '.$item_view_table.' WHERE lp_item_id="'.$this->db_id.'" AND lp_view_id="'.$this->view_id.'" AND view_count="'.$this->attempt_id.'" ';
- $rs_status=Database::query($sql_status);
- $current_status=Database::result($rs_status,0,'status');
- if (in_array($current_status,$case_completed)) {
- $my_status='';
- $total_time='';
- } else {
- $total_time =" total_time = total_time +".$this->get_total_time().", ";
- }
- }
- }
- /*if ($my_type_lp==1 && !in_array($row_verified['status'],$case_completed)) {
- $total_time =" total_time = total_time + ".$this->get_total_time().", ";
- }*/
- }
- $sql = "UPDATE $item_view_table " .
- "SET " .$total_time.
- " start_time = ".$this->get_current_start_time().", " .
- " score = ".$this->get_score().", " .
- $my_status.
- " max_score = '".$this->get_max()."'," .
- " suspend_data = '".Database::escape_string($this->current_data)."'," .
- //" max_time_allowed = '".$this->get_max_time_allowed()."'," .
- " lesson_location = '".$this->lesson_location."' " .
- "WHERE lp_item_id = ".$this->db_id." " .
- "AND lp_view_id = ".$this->view_id." " .
- "AND view_count = ".$this->attempt_id;
- $this->current_start_time = time();
- }
- if($this->debug>2){error_log('New LP - In learnpathItem::write_to_db() - Updating item_view: '.$sql,0);}
- $res = Database::query($sql);
- }
- //if(!$res)
- //{
- // $this->error = 'Could not update item_view table...'.Database::error();
- //}
- if(is_array($this->interactions) && count($this->interactions)>0){
- //save interactions
- $tbl = Database::get_course_table(TABLE_LP_ITEM_VIEW);
- $sql = "SELECT id FROM $tbl " .
- "WHERE lp_item_id = ".$this->db_id." " .
- "AND lp_view_id = ".$this->view_id." " .
- "AND view_count = ".$this->attempt_id;
- $res = Database::query($sql);
- if(Database::num_rows($res)>0){
- $row = Database::fetch_array($res);
- $lp_iv_id = $row[0];
- if($this->debug>2){error_log('New LP - In learnpathItem::write_to_db() - Got item_view_id '.$lp_iv_id.', now checking interactions ',0);}
- foreach($this->interactions as $index => $interaction){
- $correct_resp = '';
- if(is_array($interaction[4]) && !empty($interaction[4][0]) ){
- foreach($interaction[4] as $resp){
- $correct_resp .= $resp.',';
- }
- $correct_resp = substr($correct_resp,0,strlen($correct_resp)-1);
- }
- $iva_table = Database::get_course_table(TABLE_LP_IV_INTERACTION);
- $iva_sql = "SELECT id FROM $iva_table " .
- "WHERE lp_iv_id = $lp_iv_id " .
- // "AND order_id = $index";
- //also check for the interaction ID as it must be unique for this SCO view
- "AND (order_id = $index " .
- "OR interaction_id = '".Database::escape_string($interaction[0])."')";
- $iva_res = Database::query($iva_sql);
- //id(0), type(1), time(2), weighting(3),correct_responses(4),student_response(5),result(6),latency(7)
- if(Database::num_rows($iva_res)>0){
- //update (or don't)
- $iva_row = Database::fetch_array($iva_res);
- $iva_id = $iva_row[0];
- $ivau_sql = "UPDATE $iva_table " .
- "SET interaction_id = '".Database::escape_string($interaction[0])."'," .
- "interaction_type = '".Database::escape_string($interaction[1])."'," .
- "weighting = '".Database::escape_string($interaction[3])."'," .
- "completion_time = '".Database::escape_string($interaction[2])."'," .
- "correct_responses = '".Database::escape_string($correct_resp)."'," .
- "student_response = '".Database::escape_string($interaction[5])."'," .
- "result = '".Database::escape_string($interaction[6])."'," .
- "latency = '".Database::escape_string($interaction[7])."'" .
- "WHERE id = $iva_id";
- $ivau_res = Database::query($ivau_sql);
- } else {
- //insert new one
- $ivai_sql = "INSERT INTO $iva_table " .
- "(order_id, lp_iv_id, interaction_id, interaction_type, " .
- "weighting, completion_time, correct_responses, " .
- "student_response, result, latency)" .
- "VALUES" .
- "(".$index.",".$lp_iv_id.",'".Database::escape_string($interaction[0])."','".Database::escape_string($interaction[1])."'," .
- "'".Database::escape_string($interaction[3])."','".Database::escape_string($interaction[2])."','".Database::escape_string($correct_resp)."'," .
- "'".Database::escape_string($interaction[5])."','".Database::escape_string($interaction[6])."','".Database::escape_string($interaction[7])."'" .
- ")";
- $ivai_res = Database::query($ivai_sql);
- }
- }
- }
- }
- }
- if($this->debug>2){error_log('New LP - End of learnpathItem::write_to_db()',0);}
- return true;
- }
- }
- ?>
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