js

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

server.listen(6969);


app.use(express.static(__dirname + '/static'));

app.get('/', function (req, res) {
    res.render('index.ejs');
});

app.get('/test', function (req, res) {
    res.render('test.ejs');
});

var usernames = {};

var rooms = {};

var roomFileArr = {};

var userColor = {};

var value = isNaN(value) ? 0 : value;

var imgName;

app.get('/:room', function (req, res, next) {
    if (rooms[req.params.room]) {
        console.log('Sent');
        res.render('room.ejs');
    } else {
        console.log('Redirected');
        res.redirect('/');
    }
});

app.get('/file/:room', function (req, res, next) {
    if (roomFileArr[req.params.room]) {
        console.log(roomFileArr[req.params.room]);
        var fileToSend = roomFileArr[req.params.room];
        res.send(fileToSend);
    } else {
        console.log('NotFound');
        res.send(404);
    }
});

app.post('/api', multer({
    dest: './static/files/',
    rename: function (fieldname, filename) {
        return filename + Date.now();
    },
    onFileUploadStart: function (file) {
        console.log(file.originalname + ' is starting ...')
    },
    onFileUploadComplete: function (file) {
        console.log(file.fieldname + ' uploaded to  ' + file.path);
        imgName = file.name;
    },
    onError: function (err, next) {
        console.log(err);
        next(err);
    }
}), function (req, res) {

    console.log(req.files || {});
    console.log('Image Path ' + imgName || {});
    res.send(imgName);
    return res.send(200);
});



io.sockets.on('connection', function (socket) {

    socket.on('adduser', function (username, color) {
        if(username === undefined || username === null || username === ''){
            username = 'fake user #' + value++;
            socket.username = username;
            usernames[username] = username;
            userColor[username] = color;
        }else{
            socket.username = username;
            usernames[username] = username;
            userColor[username] = color;
        }
    });

    socket.on('addroom', function (room) {
        socket.join(room);
        console.log('Room ' + room || {});
        socket.emit('updatechat', 'SERVER', '#fff', 'you have connected to ' + room);
        socket.rooms = room;
        rooms[room] = room;
        console.log('new user ' + socket.username || {});
        io.sockets. in (socket.room).emit('updatechat', 'SERVER', '#fff' ,socket.username +' has joined this room');
        socket.emit('updaterooms', rooms, room);
    });

    socket.on('update_coords', function(pos) {
      var x, _ref;
      var mouseColor = '#fff';
      try {
        //for (x = 0, _ref = usernames.length; 0 <= _ref ? x <= _ref : x >= _ref; 0 <= _ref ? x++ : x--) {
          if (userColor[socket.username]) { 
            var mouseColor = userColor[socket.username];
            console.log("Client: " + socket.id);
            console.log("X: " + pos.x + ",  Y: " + pos.y);
          }
        //}
      } catch (err) {
        console.log(err);
      }
      return io.sockets.emit("send_data", pos , socket.username , mouseColor);
    });

    socket.on('sendchat', function (data) {
            console.log('new user ' + socket.username || {});
        if (userColor[socket.username]) {
            var colors = userColor[socket.username];
            io.sockets. in (socket.room).emit('updatechat', socket.username, colors, data);
        } else {
            var colors = '#fff';
            io.sockets. in (socket.room).emit('updatechat', socket.username, colors, data);
        }
    });

    socket.on('switchRoom', function (newroom) {
        socket.leave(socket.room);
        socket.join(newroom);
        console.log('newroom ' + newroom || {});
        socket.emit('updatechat', 'SERVER', '#fff', 'you have connected to ' + newroom);
        socket.broadcast.to(socket.room).emit('updatechat', 'SERVER', '#fff', socket.username + ' has left this room');
        socket.room = newroom;
        rooms[newroom] = newroom;
        io.sockets. in (socket.room).emit('updatechat', 'SERVER', '#fff' ,socket.username +' has joined this room');
        socket.emit('updaterooms', rooms, newroom);
    });

    socket.on('disconnect', function () {
        socket.broadcast.emit('updatechat', 'SERVER', '#fff', socket.username + ' has disconnected');
        delete usernames[socket.username];
        io.sockets.emit('updateusers', usernames);
        socket.leave(socket.room);
    });

    socket.on('draw', function (dataControls) {
        io.sockets. in (socket.room).emit('updateControls', socket.username, socket.room, dataControls);
    });

    socket.on('updateFile', function (newFile, userRoom) {
        console.log(newFile || {});
        console.log(userRoom || {});
        console.log(roomFileArr || {});
        io.sockets. in (socket.room).emit('addFile', socket.username, userRoom, newFile);
        roomFileArr[userRoom] = imgName;
        console.log(roomFileArr || {});
    });

    socket.on('session', function (whichSession) {
        io.sockets. in (socket.room).emit('checkSession', whichSession);
    });


});