const ESLintPlugin = require('eslint-webpack-plugin')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const MiniCssExtractPlugin = require('mini-css-extract-plugin')
const CssMinimizerPlugin = require('css-minimizer-webpack-plugin')
const TerserPlugin = require('terser-webpack-plugin')

module.exports = (env, argv) => {
  const dev = argv.mode !== 'production'
  const config = {
    devtool: dev ? 'source-map' : false,
    entry: {
      'index': [
        __dirname + '/src/index.js',
        __dirname + '/src/index.css'
      ]
    },
    output: {
      path: __dirname + '/../public',
      filename: '[name].js'
    },
    module: {
      rules: [{
        test: /\.js$/,
        exclude: [
          /node_modules/
        ],
        loader: 'babel-loader'
      }, {
        test: /\.(css)$/,
        use: [
          {
            loader: dev ? 'style-loader' : MiniCssExtractPlugin.loader,
          },
          {
            loader: 'css-loader',
            options: {
              sourceMap: true,
            },
          },
          {
            loader: 'postcss-loader',
            options: {
              postcssOptions: {
                plugins: [
                  [
                    'postcss-preset-env',
                    {
                      'stage': 0
                    },
                    'stylelint',
                    'autoprefixer',
                    {
                      'grid': true
                    }
                  ],
                ],
              },
            },
          },
        ],
      }, {
        test: /\.(png|jpe?g|gif|svg)$/i,
        type: 'asset/resource'
      }]
    },
    plugins: [
      new HtmlWebpackPlugin({
        template: __dirname + '/src/index.html'
      }),
    ],
    resolve: {
      symlinks: false,
      extensions: ['.js']
    }
  }
  if (dev) {
    config.plugins.push(
      new ESLintPlugin({
        files: __dirname + '/src',
        lintDirtyModulesOnly: true,
        failOnWarning: false,
        failOnError: true,
        fix: false
      }))
    config.devServer = {
      hot: true,
      historyApiFallback: true,
      client: {
        overlay: true
      }
    }
  } else {
    config.plugins.push(
      new MiniCssExtractPlugin({
        filename: 'Juick.[contenthash].css'
      })
    )
  }
  config.optimization = {
    minimize: !dev,
    minimizer: [
      new TerserPlugin({
        minify: TerserPlugin.swcMinify,
        // `terserOptions` options will be passed to `swc` (`@swc/core`)
        // Link to options - https://swc.rs/docs/config-js-minify
        terserOptions: {},
      }),
      new CssMinimizerPlugin()
    ]
  }
  return config
}