const path = require('path');
const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const CopyWebpackPlugin = require('copy-webpack-plugin');
const HappyPack = require('happypack');
const ExtractTextPlugin = require("extract-text-webpack-plugin");
module.exports = {
  /**
   * ['react', 'lodash']
   * vender 90kB(no antd)
   * bundle 540kB
   * total 630kB
   *
   * ['react', 'lodash','antd']
   * vender 1.23MB
   * bundle 412kB
   * total 1.6MB
   *
   *['react']
   * vender 21kB
   * bundle 610kB
   * total 630kB
   *
   * ['react','antd']
   * vender 1.16MB
   * bundle 482kB
   * total 1.6MB
   *
   * ['react']only import part of lodash
   * vender 21kB
   * bundle 570kB
   */
  entry: {
    bundle: './src/index',
    vendor: ['react']
  },
  output: {
    path: path.join(__dirname, 'dist'),
    filename: 'bundle-[chunkhash:6].js',
    publicPath: './'
  },
  plugins: [

    new HtmlWebpackPlugin({
      favicon: './asserts/favicon.ico',
      filename: 'index.html',
      template: './src/index.html',
      inject: true,
      minify: {
        removeComments: true,
        collapseWhitespace: true,
        removeAttributeQuotes: true
      }
    }),
    new webpack.optimize.DedupePlugin(),
    new webpack.optimize.OccurenceOrderPlugin(),
    new webpack.optimize.UglifyJsPlugin({
      compress: {
        warnings: false,
        drop_console: true
      }, output: {
        comments: false,  // remove all comments
      },
    }),
    new webpack.NoErrorsPlugin(),
    new webpack.optimize.CommonsChunkPlugin('vendor', 'vendor-[chunkhash:6].js'),
    new webpack.DefinePlugin({
      'process.env.NODE_ENV': JSON.stringify('production')
    }),
    new HappyPack({
      loaders: ['babel?presets[]=es2015'],
    }),
    new CopyWebpackPlugin([
      {from: path.join(__dirname, 'asserts') + '/**/*', to: path.join(__dirname, 'dist') + '/'},
      {from: path.join(__dirname, 'server.js'), to: path.join(__dirname, 'dist') + '/'},
      {from: path.join(__dirname, 'package.json'), to: path.join(__dirname, 'dist') + '/'},
      {from: path.join(__dirname,'controller/map.js'),to:path.join(__dirname,'dist')+'/controller'},
      {from: path.join(__dirname,'fake/*'),to:path.join(__dirname,'dist')+'/fake'},
      {from: path.join(__dirname,'config.json'),to:path.join(__dirname,'dist')+'/'},
    ]),
    new ExtractTextPlugin("styles-[chunkhash:6].css"),
  ],
  resolve: {
    extensions: ['', '.js', '.jsx']
  },
  module: {
    loaders: [
      {
        test: /\.js$/,
        // loaders: ['happypack/loader'],
        loaders: ['babel'],
        exclude: /node_modules/,
        include: __dirname
      },
      {
        test: /\.less$/,
        loader: ExtractTextPlugin.extract('style-loader', "css-loader!less-loader")
        //loader: ( "style-loader!css-loader!less-loader")
      },
      {
        test: /\.css$/,
        loader: ExtractTextPlugin.extract('', "css-loader")
      },
      // {
      //     test: /\.(png|jpe?g|eot|svg|ttf|woff2?)$/,
      //     loader: "file?name=images/[name]-[hash:6].[ext]"
      // },
      {
        test: /\.(png|jpe?g|eot|svg|ttf|woff2?)$/,
        loader: "url-loader?limit=8192&name=images/[name]-[hash:6].[ext]"
      },
    ]
  }
};