/**
 * React Static Boilerplate
 * https://github.com/koistya/react-static-boilerplate
 *
 * Copyright © 2015-2016 Konstantin Tarkus (@koistya)
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE.txt file in the root directory of this source tree.
 */

const browserSync = require('browser-sync');
const webpack = require('webpack');
const webpackDevMiddleware = require('webpack-dev-middleware');
const webpackHotMiddleware = require('webpack-hot-middleware');
const task = require('./task');
const config = require('./webpack.config');

task('start', () => new Promise(resolve => {
  // Hot Module Replacement (HMR) + React Hot Reload
  if (config.debug) {
    config.entry.vendor.unshift('react-hot-loader/patch', 'webpack-hot-middleware/client');
    config.module.loaders.find(x => x.loader === 'babel-loader')
      .query.plugins.unshift('react-hot-loader/babel');
    config.plugins.push(new webpack.HotModuleReplacementPlugin());
    config.plugins.push(new webpack.NoErrorsPlugin());
  }

  const bundler = webpack(config);

  browserSync({
    server: {
      baseDir: 'src/static',

      middleware: [
        webpackDevMiddleware(bundler, {
          // IMPORTANT: dev middleware can't access config, so we should
          // provide publicPath by ourselves
          publicPath: config.output.publicPath,

          // pretty colored output
          stats: config.stats,

          // for other settings see
          // http://webpack.github.io/docs/webpack-dev-middleware.html
        }),

        // bundler should be the same as above
        webpackHotMiddleware(bundler),

        // Serve index.html for all unknown requests
        (req, res, next) => {
          if (req.headers.accept.startsWith('text/html')) {
            req.url = '/index.html'; // eslint-disable-line no-param-reassign
          }
          next();
        },
      ],
    },

    // no need to watch '*.js' here, webpack will take care of it for us,
    // including full page reloads if HMR won't work
    files: [
      'build/**/*.css',
      'build/**/*.html',
    ],
  });

  resolve();
}));