module NaiveDAC{
    function initDAC(req){
        Global.acceptList = {
        };
        Global.applyList = {
        };
        Global.owner = req;
    }
    function checkPermission(req){
        return (Global.acceptList[req]!=undefined);
    }
    export function hasPermission(arg){
        return (Global.acceptList[requester]!=undefined);
    }
    export function accept(req){
        if (requester==Global.owner){
            Global.acceptList[req] = Global.applyList[req];
            if (Global.applyList[req] != undefined)
                Global.applyList[req] = undefined;
            return true;
        }
        return false;
    }
    export function cancel(req){
        if (requester==Global.owner){
            Global.applyList[req] = Global.acceptList[req];
            if (Global.acceptList[req] != undefined)
                Global.acceptList[req] = undefined;
            return true;
        }
        return false;
    }
    export function apply(remark){
        if (remark != undefined && requester !=undefined){
            Global.applyList[requester] = remark;
            return "success";
        }
        return "failed"
    }
    export function isOwner(arg){
        return Global.owner==requester;
    }
    export function getApplyList(arg){
        return JSON.stringify(Global.applyList);
    }
    export function getAcceptList(arg){
        return JSON.stringify(Global.acceptList);
    }
}