app.js

require('dotenv').config();
const cors = require('cors');
const express = require('express');
const path = require('path');
const logger = require('morgan');
const cookieParser = require('cookie-parser');
const bodyParser = require('body-parser');
const mongoose = require('mongoose');

mongoose.Promise = Promise;

const app = express();

app.use(express.static('public'));

// uncomment after placing your favicon in /public
app.use(logger('dev'));
app.use(cors());
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());

// Express only serves static assets in production
if (process.env.NODE_ENV === 'production') {
  app.use(express.static('../client/public'));
}

require('./routes/users.js')(app);

//DB Connection
mongoose.connect(process.env.MONGODB_URI || 'mongodb://localhost/movieTMDB', {
  useMongoClient: true
});
var db = mongoose.connection;

db.on('error', function(error) {
  console.log('Mongoose Error: ', error);
});

db.once('open', function() {
  console.log('Mongoose connection successful.');
});

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

// 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 : {};

  // send error
  res.status(err.status || 500);
  res.json({ error: 'error' });
});

module.exports = app;