class.ilLPStatusCollectionTLT.php

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<?php
/* Copyright (c) 1998-2010 ILIAS open source, Extended GPL, see docs/LICENSE */

include_once './Services/Tracking/classes/class.ilLPStatus.php';

class ilLPStatusCollectionTLT extends ilLPStatus
{
        function _getInProgress($a_obj_id)
        {               
                $status_info = ilLPStatusWrapper::_getStatusInfo($a_obj_id);
                
                $users = array();
                if(is_array($status_info['in_progress']))
                {
                        foreach($status_info['in_progress'] as $in_progress)
                        {
                                $users = array_merge($users,$in_progress);
                        }
                        $users = array_unique($users);
                }
                
                $users = array_diff($users,ilLPStatusWrapper::_getCompleted($a_obj_id));                
                
                return $users;
        }

        function _getCompleted($a_obj_id)
        {               
                $status_info = ilLPStatusWrapper::_getStatusInfo($a_obj_id);

                $counter = 0;
                $users = array();
                foreach($status_info['items'] as $item_id)
                {
                        $tmp_users = $status_info['completed'][$item_id];

                        if(!$counter++)
                        {
                                $users = $tmp_users;
                        }
                        else
                        {
                                $users = array_intersect($users,$tmp_users);
                        }
                }
                $users = array_unique($users);
                
                return $users;
        }
        
        function _getStatusInfo($a_obj_id, $a_include_tlt_data = false)
        {
                global $ilDB;
                
                $status_info = array();
                                                                
                include_once "Services/Object/classes/class.ilObjectLP.php";
                $olp = ilObjectLP::getInstance($a_obj_id);
                $collection = $olp->getCollectionInstance();
                if($collection)
                {                       
                        $status_info["items"] = $collection->getItems($a_obj_id);
                                                        
                        include_once './Services/MetaData/classes/class.ilMDEducational.php';   
                        foreach($status_info["items"] as $item_id)
                        {
                                $status_info["in_progress"][$item_id] = array();
                                $status_info["completed"][$item_id] = array();

                                $status_info["tlt"][$item_id] = ilMDEducational::_getTypicalLearningTimeSeconds($a_obj_id, $item_id);
                        }
                
                        $ref_ids = ilObject::_getAllReferences($a_obj_id);
                        $ref_id = end($ref_ids);                        
                        $possible_items = $collection->getPossibleItems($ref_id);                               
                        $chapter_ids = array_intersect(array_keys($possible_items),
                                $status_info["items"]);

                        // fix order (adapt from possible items)
                        $status_info["items"] = $chapter_ids;

                        if($chapter_ids)
                        {                                       
                                foreach($chapter_ids as $item_id)
                                {
                                        $status_info["item_titles"][$item_id] = $possible_items[$item_id]["title"];
                                }

                                $set = $ilDB->query("SELECT obj_id,usr_id,spent_seconds".
                                        " FROM lm_read_event".
                                        " WHERE ".$ilDB->in("obj_id", $chapter_ids, "", "integer"));
                                while($row = $ilDB->fetchAssoc($set))
                                {                                               
                                        if($row["spent_seconds"] < $status_info["tlt"][$row["obj_id"]])
                                        {
                                                $status_info["in_progress"][$row["obj_id"]][] = $row["usr_id"];                                                                                                 
                                        }
                                        else
                                        {
                                                $status_info["completed"][$row["obj_id"]][] = $row["usr_id"];                                                           
                                        }

                                        if($a_include_tlt_data)
                                        {
                                                $status_info["tlt_users"][$row["obj_id"]][$row["usr_id"]] = $row["spent_seconds"];
                                        }
                                }                                                                               
                        }
                }               
                
                if(!$a_include_tlt_data)
                {
                        unset($status_info["tlt"]);             
                }
                
                return $status_info;
        }
        
        function determineStatus($a_obj_id, $a_user_id, $a_obj = null)
        {
                $info = self::_getStatusInfo($a_obj_id);                
                                
                if(is_array($info["completed"]))
                {
                        $completed = true;
                        foreach($info["completed"] as $user_ids)
                        {
                                // must have completed all items to complete collection
                                if(!in_array($a_user_id, $user_ids))
                                {
                                        $completed = false;
                                        break;
                                }
                        }
                        if($completed)
                        {
                                return self::LP_STATUS_COMPLETED_NUM;
                        }       
                }
                
                if(is_array($info["in_progress"]))
                {
                        foreach($info["in_progress"] as $user_ids)
                        {
                                if(in_array($a_user_id, $user_ids))
                                {
                                        return self::LP_STATUS_IN_PROGRESS_NUM;
                                }
                        }
                }
                
                return self::LP_STATUS_NOT_ATTEMPTED_NUM;
        }
}       

?>