var port = 8888;

var WebSocketServer = require('websocket').server;

var http = require('http');

var g_offers = {};

var server = http.createServer(function(request, response) {

response.end('This is a WebSocket server.');

});

server.listen(port, function() {

console.log('Server running at http://localhost:' + port);

});

// create the server

wsServer = new WebSocketServer({

httpServer: server

});

var g_offer_connections = {};

var g_next_id = 1;

wsServer.on('request', function(request) {

var connection = request.accept('peer-protocol', request.origin);

connection.id = g_next_id++;

console.log('connect id:', connection.id);

connection.on('error', function (error) {

console.error('error: ', connection.id, error);

});

connection.on('open', function () {

console.error('open: ', connection.id);

});

connection.on('close', function(con) {

console.log('closed: ', connection.id);

Object.keys(g_offer_connections).forEach(function(offer) {

var other_con = g_offer_connections[offer];

if (other_con == connection) {

delete g_offer_connections[offer];

delete g_offers[offer];

}

});

});

connection.on('message', function(message) {

if (message.type === 'utf8') {

var data = JSON.parse(message.utf8Data);

console.log('CALLING:', data.type);

switch (data.type) {

case 'set_offer':

var offer = data.offer;

//console.info('offer:', offer);

g_offers[offer] = 1;

g_offer_connections[offer] = connection;

break;

case 'get_offers':

//console.info(JSON.stringify(g_offers));

var msg = JSON.stringify({ type:'get_offers', offers: Object.keys(g_offers) });

console.info(msg);

connection.sendUTF(msg);

break;

case 'set_answer':

// Save the answer for this offer

var answer = data.answer;

var offer = data.offer;

//console.info(answer);

g_offers[offer] = answer;

// Send the offers' connection the answer

var offer_con = g_offer_connections[offer];

var msg = JSON.stringify({ type:'get_answer', answer: answer });

offer_con.sendUTF(msg);

break;

/*

case 'get_answer':

var offer = data.offer;

var answer = g_offers[offer];

//console.info('offer:', offer);

//console.info('answer:', answer);

var msg = JSON.stringify({ type:'get_answer', answer: answer });

connection.sendUTF(msg);

break;

*/

default:

console.error('Unknown message type.');

console.error(data.type);

}

}

});

});