function degreesToRadians(degrees) {
    return (degrees / 180) * Math.PI;
}

const SecondsRadiansPerSecond = degreesToRadians(-6.0);
const MinutesRadiansPerSecond = degreesToRadians(-6.0 / 60);

(function() {
    this.equipped = false;
    this.isActive = false;

    this.secondsEntityID = null;
    this.minutesEntityID = null;

    var tickSound = SoundCache.getSound("https://hifi-public.s3.amazonaws.com/huffman/tick.wav");
    var tickInjector = null;

    this.preload = function(entityID) {
        this.entityID = entityID;
        this.messageChannel = "STOPWATCH-" + entityID;
        print("Stopwatch Server Preload", this.messageChannel);

        var userData = Entities.getEntityProperties(this.entityID, 'userData').userData;
        var data = JSON.parse(userData);
        this.secondsEntityID = data.secondsEntityID;
        this.minutesEntityID = data.minutesEntityID;
        print(this.secondsEntityID, this.minutesEntityID);

        this.resetTimer();

        Messages.subscribe(this.messageChannel);
        Messages.messageReceived.connect(this, this.messageReceived);
        print("Stopwatch Server Preload End");
    };

    this.unload = function() {
        print("Stopwatch Server Unload");
        this.resetTimer();
        Messages.unsubscribe(this.messageChannel);
        Messages.messageReceived.disconnect(this, this.messageReceived);
    };

    this.getStopwatchPosition = function() {
        return Entities.getEntityProperties(this.entityID, "position").position;
    };
    this.resetTimer = function() {
        print("Stopping stopwatch");
        if (tickInjector) {
            tickInjector.stop();
        }
        Entities.editEntity(this.secondsEntityID, {
            rotation: Quat.fromPitchYawRollDegrees(0, 0, 0),
            angularVelocity: { x: 0, y: 0, z: 0 },
        });
        Entities.editEntity(this.minutesEntityID, {
            rotation: Quat.fromPitchYawRollDegrees(0, 0, 0),
            angularVelocity: { x: 0, y: 0, z: 0 },
        });
        this.isActive = false;
    };
    this.startTimer = function() {
        print("Starting stopwatch");
        if (!tickInjector) {
            tickInjector = Audio.playSound(tickSound, {
                position: this.getStopwatchPosition(),
                volume: 0.7,
                loop: true
            });
        } else {
            tickInjector.restart();
        }

        Entities.editEntity(this.secondsEntityID, {
            rotation: Quat.fromPitchYawRollDegrees(0, 0, 0),
            angularVelocity: { x: 0, y: SecondsRadiansPerSecond, z: 0 },
        });
        Entities.editEntity(this.minutesEntityID, {
            angularVelocity: { x: 0, y: MinutesRadiansPerSecond, z: 0 },
        });
        this.isActive = true;
    };
    this.messageReceived = function(channel, message, sender) {
        print("Message received", channel, sender, message); 
        if (channel === this.messageChannel && message === 'click') {
            if (this.isActive) {
                this.resetTimer();
            } else {
                this.startTimer();
            }
        }
    };
});