'use strict';

const path = require('path');
const config = require('./webpack.config');
const webpack = require('webpack');
// const WebpackDevServer = require('webpack-dev-server');
const express = require('express');
const app = express();

const devMiddleware = require('webpack-dev-middleware');
const hotMiddleware = require('webpack-hot-middleware');

const { PORT } = process.env;
const port = PORT ? Number(PORT) : 3000;

config.entry.app.unshift('webpack-hot-middleware/client');
config.plugins.push(
  new webpack.HotModuleReplacementPlugin(),
  // prints more readable module names in the browser console on HMR updates
  new webpack.NamedModulesPlugin(),
  new webpack.NoEmitOnErrorsPlugin()
);

const compiler = webpack(config);
// webpack-dev-server config
const publicPath = config.output.publicPath;
const stats = {
  colors: true,
  version: false,
  modulesSort: 'issuer',
  assets: false,
  cached: false,
  cachedAssets: false,
  chunks: false,
  chunkModules: false
};

const options = { publicPath, stats };

const wdm = devMiddleware(compiler, options);
const whm = hotMiddleware(compiler);
app.use(wdm);
app.use(whm);

app.use('*', (req, res, next) => {
  const filename = path.join(compiler.outputPath, 'index.html');
  compiler.outputFileSystem.readFile(filename, (err, result) => {
    if (err) return next(err);

    res.set('content-type', 'text/html');
    res.send(result);
    res.end();
  });
});

app.listen(port, '0.0.0.0', () => {
  console.log('\n>> Listening at http://0.0.0.0:' + port + '\n');
});

wdm.waitUntilValid(() => {
  console.log('\n===> Build ready at:\n');
  console.log(`  http://0.0.0.0:${port}`);
  console.log(`  http://127.0.0.1:${port}`);
  console.log(`  http://localhost:${port}`);
});