//
//  Created by Luis Cuenca on 5/24/18
//  Copyright 2018 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
//

/* jslint bitwise: true */

/* global Script, AvatarManager, GlobalDebugger, Tablet
*/

(function(){
    Script.registerValue("TRANSITAPP", true);
	
    var TABLET_BUTTON_NAME = "TRANSIT";
    var HTML_URL = Script.resolvePath("./transitApp.html");
       
	var MSG_DOCUMENT_LOADED = 0;
	var MSG_CREATE = 1;
	var MSG_REFRESH = 2;

    var MESSAGES_CHANNEL_REFRESH = "com.highfidelity.interface.transitApp:refresh";
    
    Messages.subscribe(MESSAGES_CHANNEL_REFRESH);
    
    var tablet = Tablet.getTablet("com.highfidelity.interface.tablet.system");
    var tabletButton = tablet.addButton({
        text: TABLET_BUTTON_NAME,
        icon: Script.resolvePath("./transit-i.svg"),
        activeIcon: Script.resolvePath("./transit-a.svg")
    });
    
    var Data = function(isDistanceBased, triggerDistance, frameCount, framesPerMeter) {
        this.isDistanceBased = isDistanceBased;
        this.triggerDistance = triggerDistance;
        this.frameCount = frameCount;
        this.framesPerMeter = framesPerMeter;
    }
                        
    var transitData = AvatarManager.getAvatarTransitData();
    
    var shown = false;
    
    function manageClick() {
        if (shown) {
            tablet.gotoHomeScreen();
        } else {
            tablet.gotoWebScreen(HTML_URL);
        }
    }
    
    tabletButton.clicked.connect(manageClick);
    
    function onScreenChanged(type, url) {     
        console.log("Screen changed");
        if (type === "Web" && url === HTML_URL) {
            tabletButton.editProperties({isActive: true});
            if (!shown) {
                // hook up to event bridge
                tablet.webEventReceived.connect(onWebEventReceived);
            }
            shown = true;
        } else {
            tabletButton.editProperties({isActive: false});
            if (shown) {
                // disconnect from event bridge
                tablet.webEventReceived.disconnect(onWebEventReceived);
            }
            shown = false;
        }
    }

    function onWebEventReceived(msg) {
        var message = JSON.parse(msg);
        switch(message.type) {
            case MSG_REFRESH: {
                refresh(message.data, msg);   
                break;
            }
			case MSG_DOCUMENT_LOADED: {
                tablet.emitScriptEvent(JSON.stringify(  
                    {   
						"type": MSG_CREATE, 
                        "data": transitData
                    }  
                ));
                break;
            }
        }
    }
    
    tablet.screenChanged.connect(onScreenChanged);
    
    function shutdownTabletApp() {
        tablet.removeButton(tabletButton);
        if (shown) {
            tablet.webEventReceived.disconnect(onWebEventReceived);
            tablet.gotoHomeScreen();
        }
        tablet.screenChanged.disconnect(onScreenChanged);
    }
        
    function setTransitValues(data) {
        AvatarManager.setAvatarTransitData(data);
        return;
    }        
        
    function refresh(data, msg) {
        setTransitValues(data);
        Messages.sendMessage(MESSAGES_CHANNEL_REFRESH, msg); 
    }
    
    Messages.messageReceived.connect(function(channel, message, senderID) {
        if (channel === MESSAGES_CHANNEL_REFRESH) {
            transitData = JSON.parse(message).data;
            setTransitValues(transitData);
            if (transitData) {
                tablet.emitScriptEvent(JSON.stringify(  
                    {   
						"type": MSG_CREATE, 
                        "data": transitData
                    }  
                ));
            }
        }
    });
    
    Script.scriptEnding.connect(function () {
        shutdownTabletApp();
    });
    
}());