app.js

/**
 * Web server configurations
 *
 * @author Thanh Trung, Omorhefere Imoloame and Mahesha Kulatunga
 * @version 1.0.0
 */

var express = require('express');
var app = 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 mysql = require("mysql");
var hbs = require('hbs');
var moment = require('moment');
var index = require('./routes/index');
var api = require('./api/tweet');
var socketio = require('socket.io');
var io = socketio();
app.io = io;

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'hbs');
hbs.registerHelper('formatDate', function(object, format) {
  var createdAt = new Date(object);
  var date = moment(createdAt).format(format);
  return date;
});

hbs.registerHelper('formatArray', function(object) {
  var str = "<ul>";
  object.forEach(function(array) {
    var date = new Date(array[0].created_at).toDateString();
    var length = array.length;
      str = str + "<li><b>" + date + "</b>: " + length + " " + (length == 1? "tweet": "tweets") +"</li>"
  });
  return str + "</ul>";
});

app.use(favicon(path.join(__dirname, 'public', 'images', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(require('node-sass-middleware')({
  src: path.join(__dirname, 'public'),
  dest: path.join(__dirname, 'public'),
  indentedSyntax: true,
  sourceMap: true
}));
app.use(express.static(path.join(__dirname, 'public')));

app.use(api);
app.use(require('./routes/index.js')(io));

// 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 handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;