class.ilLPStatusLtiOutcome.php

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<?php

/* Copyright (c) 1998-2019 ILIAS open source, Extended GPL, see docs/LICENSE */


class ilLPStatusLtiOutcome extends ilLPStatus
{
    private static $userResultCache = array();
    
    private function getLtiUserResult($objId, $usrId)
    {
        if (!isset(self::$userResultCache[$objId])) {
            self::$userResultCache[$objId] = array();
        }
        
        if (!isset(self::$userResultCache[$objId][$usrId])) {
            $ltiUserResult = ilLTIConsumerResult::getByKeys($objId, $usrId);
            self::$userResultCache[$objId][$usrId] = $ltiUserResult;
        }
        
        return self::$userResultCache[$objId][$usrId];
    }
    
    private function ensureObject($objId, $object) : ilObjLTIConsumer
    {
        if (!($object instanceof ilObjLTIConsumer)) {
            $object = ilObjectFactory::getInstanceByObjId($objId);
        }
        
        return $object;
    }
    
    public function determineStatus($a_obj_id, $a_usr_id, $a_obj = null)
    {
        $ltiResult = $this->getLtiUserResult($a_obj_id, $a_usr_id);
        
        if ($ltiResult instanceof ilLTIConsumerResult) {
            $object = $this->ensureObject($a_obj_id, $a_obj);
            $ltiMasteryScore = $object->getMasteryScore();
            
            if ($ltiResult->getResult() >= $ltiMasteryScore) {
                return self::LP_STATUS_COMPLETED_NUM;
            }
            
            return self::LP_STATUS_IN_PROGRESS_NUM;
        }
        
        return self::LP_STATUS_NOT_ATTEMPTED_NUM;
    }
    
    public function determinePercentage($a_obj_id, $a_usr_id, $a_obj = null)
    {
        $ltiResult = $this->getLtiUserResult($a_obj_id, $a_usr_id);
        
        if ($ltiResult instanceof ilLTIConsumerResult) {
            return $ltiResult->getResult() * 100;
        }
        
        return 0;
    }
}