chat.js

/*
 *
 * @author rkgarcia
 * @description Chat
 *
*/

var fs = require('fs');
var url = require('url');

var server = require('http').createServer(function( req , res ){
    var fileR = url.parse(req.url).pathname;
    if( fileR == '/' ){
        response = fs.readFileSync('public/index.html');
    }else{
        if( fileR.match(/.js$/) ){
            res.setHeader("Content-Type", "text/javascript");
        }else if( fileR.match(/.css$/) ){
            res.setHeader("Content-Type", "text/css");
        }
        if( fs.existsSync( 'public' + fileR ) ){
            res.writeHead(200);
            response = fs.readFileSync('public' + fileR );
        }else{
            res.writeHead(404);
            response = "Not found";
        }
    }
    res.end( response );
});

var io = require('socket.io').listen( server );
server.listen(8181);

var users = [];
io.sockets.on('connection', function (socket) {
    console.log( users );
    socket.on('register',function(data){
        username = data.username.replace( /<\/?[a-z][a-z0-9]*[^<>]*>/ig , '' );
        username = username.replace( /\s/ig , '' );
        if( users.indexOf(username) > -1 || username.length < 3 ){
            socket.emit( 'retry' );
        }else{
            users.push( username );
            users.sort();
            socket.username = username;
            socket.emit( 'nick' , {'username':username} );
        }
        socket.emit( 'userList' , users );
        socket.broadcast.emit( 'userList' , users );
    });
    
    socket.on( 'message' , function(data){
        console.log( data );
        if( users.indexOf( data.user ) > -1 ){
            str = data.str.replace( /<\/?[a-z][a-z0-9]*[^<>]*>/ig , '' );
            socket.emit( 'message' , {'user':data.user,'message':str} );
            socket.broadcast.emit( 'message' , {'user':data.user,'message':str} );
        }
    });
    
    socket.on('disconnect',function(){
        users.splice( users.indexOf(socket.username) , 1 );
        socket.broadcast.emit( 'userList' , users );
    });
    
});