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
{
    public static 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;
    }
 
    public static 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;
    }
    
    public static function _getStatusInfo($a_obj_id, $a_include_tlt_data = false)
    {
        global $DIC;
 
        $ilDB = $DIC['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;
    }
    
    public function determineStatus($a_obj_id, $a_user_id, $a_obj = null)
    {
        $info = self::_getStatusInfo($a_obj_id);
                
        $completed_once = false;
        
        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;
                } else {
                    $completed_once = true;
                }
            }
            if ($completed) {
                return self::LP_STATUS_COMPLETED_NUM;
            }
        }
        
        // #14997
        if ($completed_once) {
            return self::LP_STATUS_IN_PROGRESS_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;
    }
}