var dial = require("peer-dial");
var http = require('http');
var express = require('express');
var opn = require("opn");
var app = express();
var server = http.createServer(app);
var PORT = 3000;
var MANUFACTURER = "Fraunhofer FOKUS";
var MODEL_NAME = "DIAL Demo Server";
var apps = {
	"YouTube": {
		name: "YouTube",
		state: "stopped",
		allowStop: true,
		pid: null,
    /*
    additionalData: {
        "ex:key1":"value1",
        "ex:key2":"value2"
    },
    namespaces: {
       "ex": "urn:example:org:2014"
    }*/
    launch: function (launchData) {
        opn("http://www.youtube.com/tv?"+launchData);
    }
	}
};
var dialServer = new dial.Server({
	expressApp: app,
	port: PORT,
	prefix: "/dial",
	manufacturer: MANUFACTURER,
	modelName: MODEL_NAME,
	/*extraHeaders: {
		"X-MY_HEADER": "My Value"
	},*/
	delegate: {
		getApp: function(appName){
			var app = apps[appName];
			return app;
		},
		launchApp: function(appName,lauchData,callback){
			console.log("Got request to launch", appName," with launch data: ", lauchData);
			var app = apps[appName];
			var pid = null;
			if (app) {
				app.pid = "run";
				app.state = "starting";
                app.launch(lauchData);
                app.state = "running";
			}
			callback(app.pid);
		},
		stopApp: function(appName,pid,callback){
            console.log("Got request to stop", appName," with pid: ", pid);
			var app = apps[appName];
			if (app && app.pid == pid) {
				app.pid = null;
				app.state = "stopped";
				callback(true);
			}
			else {
				callback(false);
			}
		}
	}
});
server.listen(PORT,function(){
	dialServer.start();
	// dialServer.stop();
	console.log("DIAL Server is running on PORT "+PORT);
});

var dial = require("peer-dial");
var dialClient = new dial.Client();
dialClient.on("ready",function(){
    console.log("DIAL client is ready");
}).on("found",function(deviceDescriptionUrl, ssdpHeaders){
    console.log("DIAL device found");
    console.log("Request DIAL device description from",deviceDescriptionUrl);
    dialClient.getDialDevice(deviceDescriptionUrl, function (dialDevice, err) {
        if(dialDevice){
            console.log("Got DIAL device description: ",dialDevice);
            console.log("Request YouTube DIAL App from",dialDevice.applicationUrl);
            dialDevice.getAppInfo("YouTube", function (appInfo, err) {
                if(appInfo){
                    console.log("Got YouTube App Info from", dialDevice.applicationUrl+"/YouTube");
                    dialDevice.launchApp("YouTube","v=YE7VzlLtp-4", "text/plain", function (launchRes, err) {
                        if(typeof launchRes != "undefined"){
                            console.log("YouTube Launched Successfully",launchRes);
                            /*dialDevice.stopApp("YouTube","run", function (statusCode,err) {
                                if(err){
                                    console.error("Error on stop YouTube App:", err);
                                }
                                else {
                                    console.log("DIAL stop YouTube App status: ",statusCode);
                                }
                            });*/
                        }
                        else if(err){
                            console.log("Error on Launch YouTube App",launchRes);
                        }
                    });
                }
                else if(err){
                    console.error("Error on get YouTube App Info or YouTube App is not available on",deviceDescriptionUrl);
                }
            });
        }
        else if(err){
            console.error("Error on get DIAL device description from ",deviceDescriptionUrl, err);
        }
    });
}).on("disappear", function(deviceDescriptionUrl, dialDevice){
    console.log("DIAL device ", deviceDescriptionUrl," disappeared");
}).on("stop", function(){
    console.log("DIAL client is stopped");
}).start();
// dialClient.stop();