const path = require('path');
const WebpackBuildNotifierPlugin = require('webpack-build-notifier');
const CompressionPlugin = require("compression-webpack-plugin");
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const CssMinimizerPlugin = require("css-minimizer-webpack-plugin");


module.exports = (env, argv) => {
  const isProduction = argv.mode === 'production';

  return {
    performance: {
      maxAssetSize: 5000000,
      maxEntrypointSize: 5000000,
    },
    entry: path.resolve(__dirname, './src/index.js'),
    module: {
      rules: [
        {
          test: /\.(js)$/,
          exclude: /node_modules/,
          use: ['babel-loader']
        },
        {
          test:/\.(s*)css$/,
          use: [
            MiniCssExtractPlugin.loader,
             'css-loader',
             'sass-loader',
          ]
       }
      ]
    },
    plugins: [
      new WebpackBuildNotifierPlugin({
        title: "UDrone",
        suppressSuccess: false, // don't spam success notifications
      }),
      new MiniCssExtractPlugin({
        filename: 'style.css',
     })
    ],
    optimization: {
      minimize: isProduction,
      minimizer: [
        (compiler) => {
          const TerserPlugin = require('terser-webpack-plugin');
          new TerserPlugin({
            terserOptions: {
              compress: {},
            }
          }).apply(compiler);
        },
        new CompressionPlugin({
          test: /\.js(\?.*)?$/i,
        }),
        new CssMinimizerPlugin(),
      ],
    },
    resolve: {
      extensions: ['*', '.js']
    },
    output: {
      path: path.resolve(__dirname, './dist'),
      filename: 'bundle.js',
    },
    devServer: {
      static: path.resolve(__dirname, './dist'),
    },
  }
};