content/hifi-content/ben/scripts/iamgreet_fsm.js

// Modified by Midnight 7/5/2017
// Further Modified by Flame Soulis 10/23/2017


(function () {
    var APP_NAME = 'I AM GREET',
        APP_ICON = Script.resolvePath('assets/heart.svg'),
        APP_ICON_ACTIVE = Script.resolvePath('assets/heart-a.svg');

    var tablet = Tablet.getTablet("com.highfidelity.interface.tablet.system"),
        button = tablet.addButton({
            icon: APP_ICON,
            activeIcon: APP_ICON_ACTIVE,
            text: APP_NAME
        });

    var BASE = 'https://metaverse.highfidelity.com/api/v1',
        ENDPOINT = {
            domain: BASE + '/domains/',
            place: BASE + '/places/'
        };


    var domainID = '',
        timer = null,
        PLACE_NAME = 'Welcome',
        NOTIFICATION_SOUND = SoundCache.getSound(Script.resolvePath('assets/bell.wav'));

    var overlay = null;



    function request(url, callback) {
        var req = new XMLHttpRequest();
        req.responseType = 'json';
        req.open('GET', url, true);
        req.send();
        req.onreadystatechange = function () {
            if (req.readyState === 4) {
                if (req.status === 200) {
                    callback(req.response,true);
                } else {
                    callback(null,false);
                }
            }
        }
    }



    var lastUserCount = 0;
	var lastOnlineCheck	= false;
    function updateHUD(data) {
        var hudText = '';

        hudText += PLACE_NAME + '\n';
        if(data.online) {
            hudText += '\n   CONNECTED\n----------------------';
        } else {
            hudText += '\n    OFFLINE\n----------------------';
        }
        if(data.online_users) {
            hudText += '\n       ' + data.online_users + ' Users';
            hudText += '\n       ' + data.online_anonymous_users + ' New\n';
        }
        if(data.online_users > lastUserCount) {
            Audio.playSound(NOTIFICATION_SOUND, {
                volume: 0.2,
                localOnly: true,
                position: MyAvatar.position
            });
        }
		if(data.online_users != lastUserCount ||
			data.online != lastOnlineCheck) {
			//Only print IF the user count has changed
			print(hudText);
		}

        lastUserCount = data.online_users ;
		lastOnlineCheck = data.online;
        //print(hudText);
        Overlays.editOverlay(overlay, {text: hudText});
    }




    function clearOverlay() {
        Overlays.deleteOverlay(overlay);
    }


    function update() {
        if (!domainID) {
            return;
        }
        function domainCallback(response,found) {
            if (!found) {
                print('Cannot find domain data', domainID);
                return;
            }
            updateHUD(response.domain);
        }
        request(ENDPOINT.domain + domainID, domainCallback);
    }



    var singleRetry = true ;
    function init() {

        function placesCallback(response,found) {
            if (!found) {
                if(singleRetry) {
                    singleRetry = false;
                    init();
                } else {
                    button.editProperties({isActive: false});
                    clean();
                    print('Cannot find place name.', PLACE_NAME);
                    return;
                }
            }
			
            domainID = response.data.place.domain.id;

            var WIDTH = 150;
            var HEIGHT = 120;

            var properties = {
                color: {red: 255, green: 255, blue: 255},
                alpha: 0.9,
                backgroundColor: {red: 69, green: 142, blue: 220},
                backgroundAlpha: 0.9,
                font: {size: 20},
                x: Window.innerWidth - WIDTH - 50,
                y: 40,
                width: WIDTH,
                height: HEIGHT
            };
            overlay = Overlays.addOverlay('text', properties);
            update();
            timer = Script.setInterval(update, 2000);
        }
        request(ENDPOINT.place + PLACE_NAME, placesCallback);
    }


    this.clickDownOnEntity = function () {
        location = 'hifi://' + PLACE_NAME
    };


    var _switch = true;

    function buttonSwitch() {
        if (_switch) {
            init();
        } else {
            clean();
        }

        button.editProperties({isActive: _switch});

        _switch = !_switch;
    }

    button.clicked.connect(buttonSwitch);

    function clean() {
        Script.clearInterval(timer);
        if (overlay) clearOverlay();
        singleRetry = true;
    }

    function cleanAll() {
        clean();
        tablet.removeButton(button);
    }

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