//npm install express@2.5.1 


var app = require('express').createServer()
  , io = require('socket.io').listen(app);

app.listen(80);

app.get('/', function (req, res) {
  res.sendfile(__dirname + '/example/index.html');
});

app.get('/style.css', function (req, res) {
  res.sendfile(__dirname + '/example/style.css');
});

app.get('/io.js', function (req, res) {
  res.sendfile(__dirname + '/lib/io.js');
});

var connections = [];
var colors = {};

io.sockets.on('connection', function(socket) {
  console.log("connection received");
  connections.push(socket);
  colors[socket.id] = Math.floor(Math.random()* 0xFFFFFF)

  var connectionsId = [];

  for (var i = 0, len = connections.length; i < len; i++) {
    var id = connections[i].id;

    if (id !== socket.id) {
      connectionsId.push(id);
    }
  }

  socket.emit('get peers', {
    connections: connectionsId
  });

  socket.broadcast.emit('new peer connected', { socketId: socket.id });

  socket.on('disconnect', function() {

    for (var i = 0; i < connections.length; i++) {
      var id = connections[i].id;

      if (id == socket.id) {
        connections.splice(i, 1);
        i--;
        socket.broadcast.emit('remove peer connected', { socketId: socket.id });
      }
    }
  });

  socket.on('receive ice candidate', function(data) {
    console.log("ice candidate received");

    var soc = getSocket(data.socketId);

    if (soc) {
      soc.emit('receive ice candidate', {
        label: data.label,
        candidate: data.candidate,
        socketId: socket.id
      });
    }
  });

  socket.on('send offer', function(data) {
    console.log("offer received");

    var soc = getSocket(data.socketId);

    if (soc) {
      soc.emit('receive offer', {
        sdp: data.sdp,
        socketId: socket.id
      });
    }
  });

  socket.on('send answer', function(data) {
    console.log("answer received");

    var soc = getSocket(data.socketId);

    if (soc) {
      soc.emit('receive answer', {
        sdp: data.sdp,
        socketId: socket.id
      });
    }
  });


  socket.on('chat msg', function(msg) {
    console.log("chat received");
    
    socket.broadcast.emit('receive chat msg', { msg: msg, color: colors[socket.id]});
  });

});


function getSocket(id) {
  for (var i = 0; i < connections.length; i++) {
    var socket = connections[i];
    if (id === socket.id) {
      return socket;
    }
  }
}