server.js

'use strict';
require('dotenv').config();
const express = require('express');
const mongoose = require('mongoose');
const morgan = require('morgan');
const passport = require('passport');

const {
  router: usersRouter
} = require('./users');

const {
  router: eventsRouter
} = require('./events');

const {
  router: productsRouter
} = require('./products');

const {
  router: cartRouter
} = require('./cart');

const {
  router: authRouter,
  localStrategy,
  jwtStrategy
} = require('./auth');

mongoose.Promise = global.Promise;

const {
  PORT,
  DATABASE_URL
} = require('./config');

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

app.use(morgan('common'));

app.use(function (req, res, next) {
  res.header('Access-Control-Allow-Origin', '*');
  res.header('Access-Control-Allow-Headers', 'Content-Type,Authorization');
  res.header('Access-Control-Allow-Methods', 'GET,POST,PUT,PATCH,DELETE');
  if (req.method === 'OPTIONS') {
    return res.send(204);
  }
  next();
});

passport.use(localStrategy);
passport.use(jwtStrategy);

app.use('/api/users/', usersRouter);
app.use('/api/events/', eventsRouter);
app.use('/api/products/', productsRouter);
app.use('/api/auth/', authRouter);
app.use('/api/cart/', cartRouter);

const jwtAuth = passport.authenticate('jwt', {
  session: false
});

app.get('/api/protected', jwtAuth, (req, res) => {
  return res.json({
    data: 'rosebud'
  });
});

app.use('*', (req, res) => {
  return res.status(404).json({
    message: 'Not Found'
  });
});

let server;

function runServer(databaseUrl, port = PORT) {

  return new Promise((resolve, reject) => {
    mongoose.connect(databaseUrl, err => {
      if (err) {
        return reject(err);
      }
      server = app.listen(port, () => {
          console.log(`Your app is listening on port ${port}`);
          resolve();
        })
        .on('error', err => {
          mongoose.disconnect();
          reject(err);
        });
    });
  });
}

function closeServer() {
  return mongoose.disconnect().then(() => {
    return new Promise((resolve, reject) => {
      console.log('Closing server');
      server.close(err => {
        if (err) {
          return reject(err);
        }
        resolve();
      });
    });
  });
}

if (require.main === module) {
  runServer(DATABASE_URL).catch(err => console.error(err));
}

module.exports = {
  app,
  runServer,
  closeServer
};