class.ilObjExerciseAccess.php

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<?php

class ilObjExerciseAccess extends ilObjectAccess implements ilConditionHandling
{
    protected ilLanguage $lng;
    protected ilAccessHandler $access;
    protected ilRbacSystem $rbacsystem;
    protected ilObjUser $user;

    public function __construct()
    {
        global $DIC;
        $this->user = $DIC->user();
        $this->lng = $DIC->language();
        $this->access = $DIC->access();
        $this->rbacsystem = $DIC->rbac()->system();
    }


    public static function getConditionOperators(): array
    {
        return array(
            ilConditionHandler::OPERATOR_PASSED,
            ilConditionHandler::OPERATOR_FAILED
        );
    }


    public static function checkCondition(int $a_trigger_obj_id, string $a_operator, string $a_value, int $a_usr_id): bool
    {
        switch ($a_operator) {
            case ilConditionHandler::OPERATOR_PASSED:
                return ilExerciseMembers::_lookupStatus($a_trigger_obj_id, $a_usr_id) == "passed";

            case ilConditionHandler::OPERATOR_FAILED:
                return ilExerciseMembers::_lookupStatus($a_trigger_obj_id, $a_usr_id) == 'failed';

            default:
                return true;
        }
    }


    public static function _getCommands(): array
    {
        return array(
            array("permission" => "read", "cmd" => "showOverview", "lang_var" => "show",
                "default" => true),
            array("permission" => "write", "cmd" => "listAssignments", "lang_var" => "edit_assignments"),
            array("permission" => "write", "cmd" => "edit", "lang_var" => "settings")
        );
    }

    public static function _lookupRemainingWorkingTimeString(
        int $a_obj_id
    ): array {
        global $DIC;

        $ilDB = $DIC->database();

        // #14077 - mind peer deadline, too

        $dl = null;
        $cnt = array();

        $q = "SELECT id, time_stamp, deadline2, peer_dl" .
            " FROM exc_assignment WHERE exc_id = " . $ilDB->quote($a_obj_id, "integer") .
            " AND (time_stamp > " . $ilDB->quote(time(), "integer") .
            " OR (peer_dl > " . $ilDB->quote(time(), "integer") .
            " AND peer > " . $ilDB->quote(0, "integer") . "))";
        $set = $ilDB->query($q);
        while ($row = $ilDB->fetchAssoc($set)) {
            if ($row["time_stamp"] > time() &&
                ($row["time_stamp"] < $dl || !$dl)) {
                $dl = $row["time_stamp"];
            }
            /* extended deadline should not be presented anywhere
            if($row["deadline2"] > time() &&
                ($row["deadline2"] < $dl || !$dl))
            {
                $dl = $row["deadline2"];
            }
            */
            if ($row["peer_dl"] > time() &&
                ($row["peer_dl"] < $dl || !$dl)) {
                $dl = $row["peer_dl"];
            }
            $cnt[$row["id"]] = true;
        }

        // :TODO: mind personal deadline?

        if ($dl) {
            $dl = ilLegacyFormElementsUtil::period2String(new ilDateTime($dl, IL_CAL_UNIX));
        }

        return array(
            "mtime" => $dl,
            "cnt" => count($cnt)
        );
    }

    public static function _checkGoto($a_target): bool
    {
        global $DIC;

        $ilAccess = $DIC->access();

        $t_arr = explode("_", $a_target);

        if ($t_arr[0] != "exc" || ((int) $t_arr[1]) <= 0) {
            return false;
        }
        return $ilAccess->checkAccess("read", "", $t_arr[1]) ||
            $ilAccess->checkAccess("visible", "", $t_arr[1]);
    }

    public function canBeDelivered(ilWACPath $ilWACPath): bool
    {
        return true;
    }

    public function _checkAccess(string $cmd, string $permission, int $ref_id, int $obj_id, ?int $user_id = null): bool
    {
        $ilUser = $this->user;
        $rbacsystem = $this->rbacsystem;

        if ($user_id === null) {
            $user_id = $ilUser->getId();
        }

        if (self::_isOffline($obj_id)) {
            if (($permission === "visible" || $permission === "read") && !$rbacsystem->checkAccessOfUser($user_id, 'write', $ref_id)) {
                $this->access->addInfoItem(ilAccessInfo::IL_NO_OBJECT_ACCESS, $this->lng->txt("offline"));
                return false;
            }
        }

        return true;
    }

}