class.ilObjSAHSLearningModuleAccess.php

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<?php
 
/* Copyright (c) 1998-2012 ILIAS open source, Extended GPL, see docs/LICENSE */
 
include_once("./Services/Object/classes/class.ilObjectAccess.php");
include_once 'Services/AccessControl/interfaces/interface.ilConditionHandling.php';
 
class ilObjSAHSLearningModuleAccess extends ilObjectAccess implements ilConditionHandling
{
    
    public static function getConditionOperators()
    {
        include_once './Services/AccessControl/classes/class.ilConditionHandler.php';
        return array(
            ilConditionHandler::OPERATOR_FINISHED,
            ilConditionHandler::OPERATOR_FAILED
        );
    }
    
    
    public static function checkCondition($a_trigger_obj_id, $a_operator, $a_value, $a_usr_id)
    {
        switch ($a_operator) {
 
            case ilConditionHandler::OPERATOR_FAILED:
                include_once './Services/Tracking/classes/class.ilLPStatus.php';
                return ilLPStatus::_lookupStatus($a_trigger_obj_id, $a_usr_id) == ilLPStatus::LP_STATUS_FAILED_NUM;
                break;
            
            case ilConditionHandler::OPERATOR_FINISHED:
            default:
                include_once './Services/Tracking/classes/class.ilLPStatus.php';
                return ilLPStatus::_hasUserCompleted($a_trigger_obj_id, $a_usr_id);
 
        }
        return true;
    }
    
    
    
    public function _checkAccess($a_cmd, $a_permission, $a_ref_id, $a_obj_id, $a_user_id = "")
    {
        global $ilUser, $lng, $rbacsystem, $ilAccess;
 
        if ($a_user_id == "") {
            $a_user_id = $ilUser->getId();
        }
 
        switch ($a_cmd) {
            case "view":
 
                if (!ilObjSAHSLearningModuleAccess::_lookupOnline($a_obj_id)
                    && !$rbacsystem->checkAccessOfUser($a_user_id, 'write', $a_ref_id)) {
                    $ilAccess->addInfoItem(IL_NO_OBJECT_ACCESS, $lng->txt("offline"));
                    return false;
                }
                break;
        }
 
        switch ($a_permission) {
            case "visible":
                if (!ilObjSAHSLearningModuleAccess::_lookupOnline($a_obj_id) &&
                    (!$rbacsystem->checkAccessOfUser($a_user_id, 'write', $a_ref_id))) {
                    $ilAccess->addInfoItem(IL_NO_OBJECT_ACCESS, $lng->txt("offline"));
                    return false;
                }
                break;
        }
 
 
        return true;
    }
    
    public static function _getCommands($a_obj_id = null)
    {
        $commands = array(
            array("permission" => "read", "cmd" => "view", "lang_var" => "show","default" => true),
            array("permission" => "write", "cmd" => "editContent", "lang_var" => "edit_content"),
            array("permission" => "write", "cmd" => "edit", "lang_var" => "settings")
        );
        // #14866
        if ($a_obj_id && ilObjSAHSLearningModuleAccess::_lookupOfflineModeAvailable($a_obj_id)) {
            $offlineMode=ilObjSAHSLearningModuleAccess::_lookupUserIsOfflineMode($a_obj_id);
            if ($offlineMode == false) {
                $commands[]=array("permission" => "read", "cmd" => "offlineModeStart", "lang_var" => "offline_mode");
            } else {
                $commands[]=array("permission" => "read", "cmd" => "offlineModeStop", "lang_var" => "offline_mode");
                $commands[0]=array("permission" => "read", "cmd" => "offlineModeView", "lang_var" => "show","default" => true);
            }
        }
        
        return $commands;
    }
 
    //
    // access relevant methods
    //
 
    public static function _lookupOnline($a_id)
    {
        global $ilDB;
 
        $set = $ilDB->queryF(
            'SELECT c_online FROM sahs_lm WHERE id = %s',
            array('integer'),
            array($a_id)
        );
        $rec = $ilDB->fetchAssoc($set);
        
        return ilUtil::yn2tf($rec["c_online"]);
    }
    
    public static function _lookupEditable($a_obj_id)
    {
        global $ilDB;
        
        $set = $ilDB->queryF(
            'SELECT * FROM sahs_lm WHERE id = %s',
            array('integer'),
            array($a_obj_id)
        );
        $rec = $ilDB->fetchAssoc($set);
 
        return $rec["editable"];
    }
    
 
    public static function _checkGoto($a_target)
    {
        global $ilAccess;
        
        $t_arr = explode("_", $a_target);
 
        if ($t_arr[0] != "sahs" || ((int) $t_arr[1]) <= 0) {
            return false;
        }
 
        if ($ilAccess->checkAccess("visible", "", $t_arr[1]) || $ilAccess->checkAccess("read", "", $t_arr[1])) {
            return true;
        }
        return false;
    }
 
    public static function _lookupDiskUsage($a_id)
    {
        $lm_data_dir = ilUtil::getWebspaceDir('filesystem') . "/lm_data";
        $lm_dir = $lm_data_dir . DIRECTORY_SEPARATOR . "lm_" . $a_id;
        
        return file_exists($lm_dir) ? ilUtil::dirsize($lm_dir) : 0;
    }
 
    public static function _lookupUserCertificate($obj_id, $usr_id = 0)
    {
        global $ilUser;
        $uid = ($usr_id) ? $usr_id : $ilUser->getId();
        
        $completed = false;
        // check for certificates
        include_once "./Services/Certificate/classes/class.ilCertificate.php";
        if (ilCertificate::isActive() && ilCertificate::isObjectActive($obj_id)) {
            $lpdata = false;
            include_once "./Modules/ScormAicc/classes/class.ilObjSAHSLearningModule.php";
            $type = ilObjSAHSLearningModule::_lookupSubType($obj_id);
            include_once("Services/Tracking/classes/class.ilObjUserTracking.php");
            if (ilObjUserTracking::_enabledLearningProgress()) {
                include_once "./Services/Tracking/classes/class.ilLPStatus.php";
                $completed = ilLPStatus::_hasUserCompleted($obj_id, $uid);
                $lpdata = true;
            }
            switch ($type) {
                case "scorm":
                    if (!$lpdata) {
                        include_once "./Modules/ScormAicc/classes/class.ilObjSCORMLearningModule.php";
                        $completed = ilObjSCORMLearningModule::_getCourseCompletionForUser($obj_id, $uid);
                    }
                    break;
                case "scorm2004":
                    if (!$lpdata) {
                        include_once "./Modules/Scorm2004/classes/class.ilObjSCORM2004LearningModule.php";
                        $completed = ilObjSCORM2004LearningModule::_getCourseCompletionForUser($obj_id, $uid);
                    }
                    break;
                default:
                    break;
            }
        }
        return $completed;
    }
 
    public static function _isOffline($a_obj_id)
    {
        return !self::_lookupOnline($a_obj_id);
    }
    
    public static function _lookupUserIsOfflineMode($a_obj_id)
    {
        global $ilDB,$ilUser;
 
        $user_id = $ilUser->getId();
 
        $set = $ilDB->queryF(
            'SELECT offline_mode FROM sahs_user WHERE obj_id = %s AND user_id = %s',
            array('integer','integer'),
            array($a_obj_id, $user_id)
        );
        $rec = $ilDB->fetchAssoc($set);
        if ($rec["offline_mode"] == "offline") {
            return true;
        }
        return false;
    }
    
    public static function _lookupOfflineModeAvailable($a_id)
    {
        global $ilDB;
 
        $set = $ilDB->queryF(
            'SELECT offline_mode FROM sahs_lm WHERE id = %s',
            array('integer'),
            array($a_id)
        );
        $rec = $ilDB->fetchAssoc($set);
 
        return ilUtil::yn2tf($rec["offline_mode"]);
    }
}