app.js

var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var Tail = require('tail').Tail;

var app = express();
var http = require('http').Server(app);
var io = require('socket.io')(http);

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));


app.get('/', function(req, res, next) {
    res.render('index', { title: 'Express' });
});

app.post('/dashboard', (req, res, next) => {

    var tail = new Tail(req.body.accessLogs);



    io.on('connection', (socket) => {

        tail.on('line', (data) => {
            console.log(data);
            io.emit('log', data);
        })

        console.log('a user connected');

        socket.on('disconnect', () => {
            console.log('user disconnected');
        });

    });



    // console.log(req.body);
    res.render('dashboard');
})




// catch 404 and forward to error handler
app.use(function(req, res, next) {
    var err = new Error('Not Found');
    err.status = 404;
    next(err);
});

// error handlers

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
    app.use(function(err, req, res, next) {
        res.status(err.status || 500);
        res.render('error', {
            message: err.message,
            error: err
        });
    });
}

// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
    res.status(err.status || 500);
    res.render('error', {
        message: err.message,
        error: {}
    });
});


http.listen(3000, () => {
    console.log('listening on 3000');
})