server.js

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

mongoose.Promise = global.Promise;

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

const app = express();

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

app.use((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.sendStatus(204);
  }
  next();
});

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

app.use('/api/users/', usersRouter);
app.use('/api/auth/', authRouter);

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

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

let server;

function runServer() {
  return new Promise((resolve, reject) => {
    mongoose.connect(DATABASE_URL, { useMongoClient: true }, 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(() =>
    new Promise((resolve, reject) => {
      console.log('Closing server');
      server.close(err => {
        if (err) {
          return reject(err);
        }
        resolve();
      });
    }));
}

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

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