class.ilObjCourseReferenceAccess.php

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<?php

class ilObjCourseReferenceAccess extends ilContainerReferenceAccess
{
    public function _checkAccess(string $cmd, string $permission, int $ref_id, int $obj_id, ?int $user_id = null): bool
    {
        global $DIC;

        switch ($permission) {
            case 'visible':
            case 'read':
                $target_ref_id = ilObjCourseReference::_lookupTargetRefId($obj_id);

                if (!$target_ref_id || !$DIC->access()->checkAccessOfUser($user_id, $permission, $cmd, $target_ref_id)) {
                    return false;
                }
                break;
        }

        return true;
    }

    public static function _preloadData(array $obj_ids, array $ref_ids): void
    {
        global $DIC;

        $repository = new ilUserCertificateRepository();
        $coursePreload = new ilCertificateObjectsForUserPreloader($repository);
        $coursePreload->preLoad($DIC->user()->getId(), array_map(function ($objId) {
            return (int) \ilObjCourseReference::_lookupTargetId($objId);
        }, $obj_ids));
    }

    public static function _getCommands($a_ref_id = 0): array
    {
        global $DIC;

        if ($DIC->access()->checkAccess('write', '', $a_ref_id)) {
            // Only local (reference specific commands)
            $commands = array(
                array("permission" => "visible", "cmd" => "", "lang_var" => "show","default" => true),
                array("permission" => "write", "cmd" => "editReference", "lang_var" => "edit")
            );
        } else {
            $commands = ilObjCourseAccess::_getCommands();
        }
        return $commands;
    }
}