/* eslint-disable */
const webpack = require('webpack');
const { merge } = require('webpack-merge');

// Plugins
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const CssMinimizerPlugin = require('css-minimizer-webpack-plugin');
const TerserPlugin = require('terser-webpack-plugin');
const WebpackShellPluginNext = require('webpack-shell-plugin-next');
const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const { WebpackManifestPlugin } = require('webpack-manifest-plugin');
const WebpackAssetsManifest = require('webpack-assets-manifest');

// Configs
const baseConfig = require('./webpack.base.config');

const prodConfiguration = env => {
  return merge([
    {
      optimization: {
        runtimeChunk: 'single',
        emitOnErrors: true,
        splitChunks: {
          cacheGroups: {
            vendor: {
              test: /[\\/]node_modules[\\/]/,
              name: 'vendors',
              chunks: 'all'
            }
          }
        },
        minimize: false,
        minimizer: [
          new TerserPlugin(),
          new CssMinimizerPlugin(),
        ],
      },
      // devtool: 'cheap-module-source-map',
      plugins: [
        new CleanWebpackPlugin(),
        // new webpack.EvalSourceMapDevToolPlugin({
        //   exclude: ['vendors.js'],
        // }),
        new WebpackManifestPlugin({
          fileName: 'webpack-manifest.json'
        }),
        new WebpackAssetsManifest(),
        new MiniCssExtractPlugin(),
        new BundleAnalyzerPlugin({
          analyzerMode: 'server',
          analyzerPort: 8181,
          generateStatsFile: true,
          statsFilename: 'statistics.html',
          logLevel: "info"
        }),
        new WebpackShellPluginNext({
          onBuildStart:{
            scripts: ['echo "===> Starting packing with WEBPACK 5"'],
            blocking: true,
            parallel: false
          },
          onBuildEnd:{
            scripts: ['cd server && nodemon index.js'],
            blocking: false,
            parallel: true
          }
        })
      ],
    },
  ]);
}

module.exports = env => {
  return merge(baseConfig(env), prodConfiguration(env));
}