var path = require('path');
var webpack = require('webpack');
var HtmlWebpackPlugin = require('html-webpack-plugin');
var BrowserSyncPlugin = require('browser-sync-webpack-plugin');

var definePlugin = new webpack.DefinePlugin({
  __DEV__: JSON.stringify(JSON.parse(process.env.BUILD_DEV || 'true'))
});

module.exports = {
  devtool: 'cheap-source-map',
  mode: 'development',
  entry: {
    polyfills: './src/polyfills.js',
    app: path.resolve(__dirname, 'src/main.js'),
  },
  target: 'web',
  watch: true,
  output: {
    pathinfo: true,
    filename: '[name].bundle.js',
    chunkFilename: '[name].bundle.js',
    path: path.resolve(__dirname, 'dist')
  },
  optimization: {
    splitChunks: {
      cacheGroups: {
        commons: { test: /[\\/]node_modules[\\/]/, name: "vendors", chunks: "all" }
      }
    }
  },
  plugins: [
    definePlugin,
    new HtmlWebpackPlugin({
      filename: '../index.html',
      template: './src/index.html',
      chunksSortMode: "manual",
      chunks: ['polyfills', 'vendors', 'app'],
      minify: {
        removeAttributeQuotes: false,
        collapseWhitespace: false,
        html5: false,
        minifyCSS: false,
        minifyJS: false,
        minifyURLs: false,
        removeComments: false,
        removeEmptyAttributes: false
      },
      hash: false
    }),
    new BrowserSyncPlugin({
      host: process.env.IP || 'localhost',
      port: process.env.PORT || 3000,
      server: {
        baseDir: ['./', './build']
      }
    }),
    new webpack.DefinePlugin({
      CANVAS_RENDERER: JSON.stringify(true),
      WEBGL_RENDERER: JSON.stringify(true)
    })
  ],
  module: {
    rules: [
      { test: /\.js$/, exclude: /node_modules/, loaders: "babel-loader" },
      {
        test: /\.(gif|png|jpe?g|svg|xml)$/i,
        use: "file-loader"
      },
      {
        test: [/\.vert$/, /\.frag$/],
        use: "raw-loader"
      }
    ]
  }
};