//
// button.js
//
// Created by Clement Brisset on 10/26/13
// Copyright 2017 High Fidelity, Inc.
//
// Distributed under the Apache License, Version 2.0.
// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//

/* globals Entities, Script, AnimationCache, Settings, MyAvatar, DriveKeys, AvatarList,
Vec3, HMD, Overlays, Camera, isInEditMode */

(function () {
    var myEntityID = null;
    var version = 11;
    var myParentID = null;
    var myUserData = null;

    function debug(text) {
        console.log("[TAG " + version + "] " + text);
    }
    debug("Version: " + version);

    var signals = {
        list: {},
        connect: function(signal, func) {
            debug("Connecting: " + signal.name);
            signal.connect(func);
            signals.list[signal.name] = function() {
                signal.disconnect(func);
            }
        },
        disconnect: function(signal) {
            debug("Disonnecting: " + signal.name);
            signals.list[signal.name]();
            delete signals.list[signal.name];
        },
        disconnectAll: function() {
            for (signalName in signals.list) {
                debug("DisonnectingAll: " + signalName);
                signals.list[signalName]();
                delete signals.list[signalName];
            }
        }
    };

    this.preload = function (id) {
        myEntityID = id;
        var props = Entities.getEntityProperties(myEntityID, ["parentID", "userData"]);
        myParentID = props.parentID;
        myUserData = JSON.parse(props.userData);
        debug("Loading " + myEntityID + " (parentID: " + myParentID + ")");

        signals.connect(Entities.clickDownOnEntity, onClickDown);
    };
    this.unload = function () {
        debug("Unloading " + myEntityID);
        signals.disconnectAll();
    };

    function trigger() {
        if (isIn()) {
            getOut();
        } else {
            getIn();
        }
    }
    function onUpdate() {
        if (isIn()) {
            var props = Entities.getEntityProperties(myEntityID);
            if (Vec3.distance(MyAvatar.position, props.position) > 5) {
                getOut();
            }
        }
    }

    function isIn() {
        return MyAvatar.getParentID() == myEntityID;
    }
    function getIn() {
        debug("getIn");
        var props = Entities.getEntityProperties(myEntityID);
        if (Vec3.distance(MyAvatar.position, props.position) > 2) {
            debug("nope")
            return;
        }

        props.position.y = MyAvatar.position.y;
        MyAvatar.position = props.position;
        MyAvatar.orientation = props.rotation;
        // MyAvatar.setCollisionsEnabled(false);
        MyAvatar.setParentID(myEntityID);
        signals.connect(Script.update, onUpdate);
    }
    function getOut() {
        debug("getOut");
        signals.disconnect(Script.update);
        MyAvatar.setParentID(Uuid.NULL_ID);
        // MyAvatar.setCollisionsEnabled(true);
        MyAvatar.bodyPitch = 0;
        MyAvatar.bodyRoll = 0;
    }

    function onClickDown(entityID, event) {
        if (myEntityID != entityID || !event.isPrimaryButton) {
            return;
        }
        debug("onClickDown: " + JSON.stringify(myUserData))

        trigger();
    }

    this.startFarTrigger = function() {
        debug("startFarTrigger: " + JSON.stringify(myUserData));
        trigger();
    }
});