icfp2015/server.js

var express = require('express'),
	http = require('http'),
	io = require('socket.io'),
	bodyParser = require('body-parser'),
	cookieParser = require('cookie-parser'),
	mongojs = require('mongojs');

var app = express();
app.use(express.static('./public'));

var mongoUri = "mongodb://localhost:27017/visualizer"; 
var db = mongojs( mongoUri );
var honeyCombs = db.collection('honeyCombs');
var leaderBoards = db.collection('leaderBoards');
// leaderBoards.insert({dio: "cane", type: "flyingPig"});

//Specifying the public folder of the server to make the html accesible using the static middleware
app.use(cookieParser());

var jsonParser = bodyParser.json()
 
// create application/x-www-form-urlencoded parser 
var urlencodedParser = bodyParser.urlencoded({ extended: false })
 
// POST /login gets urlencoded bodies 



function findSocketByCookie(cookie) {
  for(var i in io.sockets.connected) {
    var socket = io.sockets.connected[i];
    if(socket.handshake.headers.cookie.indexOf(cookie) !== -1){
      return socket;
    }
  }
}

app.post('/show', urlencodedParser, function (req, res) {
	res.sendStatus(200);
	console.log("Sending json to live interfaces...");

	// console.dir(io.sockets.connected);
	for(var i in io.sockets.connected) {
		var socket = io.sockets.connected[i];
		socket.emit("jsonHoneycomb", req.body.honeyComb);
		saveQuery(req.body.honeyComb);
	}
	// var socket = findSocketByCookie(req.cookies.myUniqueCookie);
	
	
});

var server = http.createServer(app).listen(8080);

console.log("Listening on port 8080");
console.log("Send jsons to /show please.");

//Server listens on the port 8124
var io = io.listen(server); 
/*initializing the websockets communication , server instance has to be sent as the argument */
io.sockets.on('connection', function(socket){

	console.log("New Client Connected.");

	socket.on('disconnect', function () {
		console.log("Client disconnected.")
	});

	socket.on('ackMessage', function(msg){
		if(msg == "true"){
			console.log('Message received.');
		}
	});
	socket.on('liveMessage', function(msg){
		if(msg == "true"){
			console.log('Live interface connected.');
		}
	});
	socket.on('jsonToParse', function(msg){
		console.log('Json received.');
		saveQuery(msg);
		// socket.emit("jsonHoneycomb", msg);
		
	});
	socket.on('leaderBoard',function(lb){
		leaderBoards.find().sort({timeStamp:-1}).limit(1, function(err, docs){
					
					var parsedLb = JSON.parse(lb);
					if( docs.length ){
						if(typeof docs[0].timeStamp != "undefined"){

							if( parsedLb.timeStamp - docs[0].timeStamp > 600000){
								leaderBoards.insert(parsedLb);
								console.log("Saving stats report.");
							}	
						}
					}else{
						leaderBoards.insert(parsedLb);

					}
					if(err){
						console.dir(err);
					}
		});
		// 

	});

});
function saveQuery(query){
	var d = new Date();
		d = 
		    ("00" + (d.getMonth() + 1)).slice(-2) + "/" + 
		    ("00" + d.getDate()).slice(-2) + "/" + 
		    d.getFullYear() + " " + 
		    ("00" + d.getHours()).slice(-2) + ":" + 
		    ("00" + d.getMinutes()).slice(-2) + ":" + 
		    ("00" + d.getSeconds()).slice(-2)
		;
	console.log("Saving query in db...");
	honeyCombs.insert({ honeyComb: query, dateStamp: d });
}