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';
                                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;
        }
        
        
        
    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;
    }
    
    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
    //

    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"]);
    }
    
    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"];
    }
    

    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]))
        {
            return true;
        }
        return false;
    }

    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;
        }

        static function _isOffline($a_obj_id)
        {
                return !self::_lookupOnline($a_obj_id);
        }
        
        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;
        }
        
        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"]);
        }
}

?>