index.js

const express = require('express');
const lowdb = require('lowdb');
const lodashId = require('lodash-id');
const cookieParser = require('cookie-parser');
const FileAsync = require('lowdb/adapters/FileAsync');

const { DB_PATH, DB_DEFAULTS } = require('./db');
const meetupRouter = require('./routes/meetup');
const userRouter = require('./routes/user');

const PORT = process.env.PORT || 3000;

let db;
const app = express();

app.use((req, res, next) => {
  res.header('Access-Control-Allow-Origin', '*');
  res.header(
    'Access-Control-Allow-Headers',
    'Origin, X-Requested-With, Content-Type, Accept, Authorization'
  );
  next();
});

app.use(cookieParser());
app.use((req, res, next) => {
  req.db = db;
  next();
});

app.use((req, res, next) => {
  const DELAY = process.env.DELAY;

  if (!DELAY || DELAY === 'false') {
    next();
    return;
  }

  let delayInMs = parseInt(DELAY, 10);
  if (isNaN(delayInMs)) {
    next();
    return;
  }

  delayInMs = Math.floor(Math.random() * delayInMs);

  setTimeout(() => next(), delayInMs);
});

app.get('/', (req, res) => {
  res.send({
    status: 'Running'
  });
});
app.use('/meetup', meetupRouter);
app.use('/user', userRouter);
app.all('*', (req, res) => {
  res.status(404).send('Only unicorns here 🦄');
});

async function initDb() {
  db = await lowdb(new FileAsync(DB_PATH));
  db._.mixin(lodashId);
  return db.defaults(DB_DEFAULTS).write();
}

async function run() {
  await initDb();
  app.listen(PORT, () => {
    console.log(`Server is listening on port ${PORT}`);
  });
}

run().catch(err => {
  console.error(err);
  process.exit(1);
});