//
// scaleMe.js
// Distributed under the Apache License, Version 2.0.
// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
// Copyright 2023 alizardguy
//
"use strict";

(function (){
    var jsMainFileName = "scaleMe.js";
    var ROOT = Script.resolvePath('').split(jsMainFileName)[0];

    var APP_NAME = "SCALEME";
    var APP_URL = ROOT + "index.html";
    var APP_ICON_ACTIVE = ROOT + "icons/active.png";
    var APP_ICON_INACTIVE = ROOT + "icons/inactive.png";
    var appStatus = false;
    var channel = "overte.application.more.zardsscaleme";

    var tablet = Tablet.getTablet("com.highfidelity.interface.tablet.system");

    tablet.screenChanged.connect(onScreenChanged);

    var button = tablet.addButton({
        text: APP_NAME,
        icon: APP_ICON_INACTIVE,
        activeIcon: APP_ICON_ACTIVE
    });


    function clicked(){
        if (appStatus === true) {
            tablet.webEventReceived.disconnect(onAppWebEventReceived);
            tablet.gotoHomeScreen();
            appStatus = false;
        }else{
            //Launching the Application UI.
            tablet.gotoWebScreen(APP_URL);
            tablet.webEventReceived.connect(onAppWebEventReceived);
            appStatus = true;
        }

        button.editProperties({
            isActive: appStatus
        });
    }

    button.clicked.connect(clicked);

    //Receive message from the HTML UI
    function onAppWebEventReceived(message) {
        if (typeof message === "string") {
            var instruction = JSON.parse(message);
            if (instruction.channel === channel) {
                if (instruction.action === "SCALE") { //<== Use this for action trigger the UI script processing. (whithout delay)
                    MyAvatar.setAvatarScale(instruction.amount);
                }
            }
        }
    }

    function onScreenChanged(type, url) {
        if (type === "Web" && url.indexOf(APP_URL) !== -1) {
            appStatus = true;

        } else {
            appStatus = false;
        }
        
        button.editProperties({
            isActive: appStatus
        });
    }

    function cleanup() {

        if (appStatus) {
            tablet.gotoHomeScreen();
            tablet.webEventReceived.disconnect(onAppWebEventReceived);
        }

        tablet.screenChanged.disconnect(onScreenChanged);
        tablet.removeButton(button);
    }

    Script.scriptEnding.connect(cleanup);
}());