'use strict';

var path = require('path');
var webpack = require('webpack');
var StatsPlugin = require('stats-webpack-plugin');

var IS_PRODUCTION = process.env.NODE_ENV === 'production';
var ROOT_PATH = path.resolve(__dirname, '..');

// must match config.webpack.dev_server.port
var DEV_SERVER_PORT = 3808;

var config = {
  context: ROOT_PATH,
  entry: {
    bundle: './app/assets/javascripts/webpack/bundle.js'
  },

  output: {
    path: path.join(ROOT_PATH, 'public/assets/webpack'),
    publicPath: '/assets/webpack/',
    filename: IS_PRODUCTION ? '[name]-[chunkhash].js' : '[name].js'
  },

  module: {
    loaders: [
      {
        test: /\.es6$/,
        exclude: /node_modules/,
        loader: 'babel-loader',
        query: {
          presets: ['es2015']
        }
      }
    ]
  },

  plugins: [
    // manifest filename must match config.webpack.manifest_filename
    // webpack-rails only needs assetsByChunkName to function properly
    new StatsPlugin('manifest.json', {
      chunkModules: false,
      source: false,
      chunks: false,
      modules: false,
      assets: true
    })
  ],

  resolve: {
    extensions: ['', '.js', '.es6', '.js.es6']
  }
}

if (!IS_PRODUCTION) {
  config.devServer = {
    port: DEV_SERVER_PORT,
    headers: { 'Access-Control-Allow-Origin': '*' }
  };
  config.output.publicPath = '//localhost:' + DEV_SERVER_PORT + config.output.publicPath;
}

module.exports = config;