const express = require('express');
const Gun = require('gun');
const join = require('path').join;
const livereload = require('livereload');
const PORT = process.env.PORT || 8080;
const root = process.cwd();
const throng = require('throng');
const WORKERS = process.env.WEB_CONCURRENCY || 1;

function start() {
  const app = express();
  app.use(Gun.serve);
  app.use(express.static(join(root, 'public')));
  app.use(express.static(join(root, 'node_modules')));
  app.use(express.static(join(root, 'src')));

  app.get('*', (req, res) => {
    res.sendFile(join(root, 'public', 'index.html'));
  });

  const server = app.listen(PORT, () => console.log(`server listening on port: ${PORT}`));

  Gun({
    web: server,
    localStorage: false
  });

  if (process.NODE_ENV !== 'production') {
    const lrserver = livereload.createServer({
      exts: ['html', 'css', 'js', 'mjs'],
      extensions: ['html', 'css', 'js', 'mjs']
    }, () => {
      console.log(`livereload listening no port: 35729`);
    });
    lrserver.watch([
      join(root, 'src'),
      join(root, 'public')
    ]);
  }

}

throng({
  workers: WORKERS,
  lifetime: Infinity,
  grace: 4000
}, start);