const path = require('path');
const express = require('express');
const fs = require('fs');
const bodyParser = require('body-parser');

const frontendDir = path.resolve(__dirname, 'dist');

const app = express();

app.set('port', (process.env.PORT || 3000));

fs.stat(frontendDir, (err) => {
  if (!err) {
    console.log(`Serving static build from ${frontendDir}`);
    console.log('Run `npm run clean` to return to development mode');
    app.use('/', express.static(frontendDir));
  } else {
    console.log('Serving development build with nwb middleware');
    console.log('Run `npm run build` to create a production build');

    // eslint-disable-next-line import/no-extraneous-dependencies
    app.use(require('nwb/express')(express, {
      entry: 'src/index.jsx',
      reload: true,
    }));
  }
});

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

app.listen(app.get('port'), () => {
  console.log(`Server started: http://localhost:${app.get('port')}/`);
});