index.js

/* ===================
   Import Node Modules
            ================== = */
  const express            = require('express');                          // Fast, unopinionated, minimalist web framework for node.
  const app                = express();                                   // Initiate Express Application
  const router             = express.Router();
  const mongoose           = require('mongoose');                         // Node Tool for MongoDB
  const config             = require('./config/database');                // Mongoose Config
  const path               = require('path');                             // NodeJS Package for file paths
  const authentication     = require('./routes/authentication')(router);
  const blogs              = require('./routes/blogs')(router);
  const bodyParser         = require('body-parser');
  const cors               = require('cors');
  const port               = process.env.PORT || 8080;

// // Database Connection
mongoose.Promise = global.Promise;
mongoose.connect(config.uri, (err) => {
  if (err) {
    console.log('Could NOT connect to database: ', err);
  } else {
    console.log('Connected to database: ' + config.db);
  }
});

app.use(cors({
  origin: 'http://localhost:4200'
}));

app.use(bodyParser.urlencoded({ extended: false }));

// parse application/json
app.use(bodyParser.json());

// Provide static directory for frontend
app.use(express.static(__dirname + '/public'));
app.use('/authentication', authentication);
app.use('/blogs', blogs);

// Connect server to Angular 2 Index.html
app.get('*', (req, res) => {
  res.sendFile(path.join(__dirname + '/public/index.html'));
});

// Start Server: Listen on port 8080
app.listen(port, () => {
  console.log('Listening on port '+ port);
});