require('dotenv').config({path: `${__dirname}/.env`})
const webpack = require('webpack')
const path = require('path')
import * as fs from 'fs'
const HtmlWebpackPlugin = require('html-webpack-plugin')
const ReactRefreshWebpackPlugin = require('@pmmmwh/react-refresh-webpack-plugin')
const MiniCssExtractPlugin = require('mini-css-extract-plugin')
const CopyWebpackPlugin = require('copy-webpack-plugin')
const dev = process.env.NODE_ENV !== 'production'
// Uncomment if you'd like to analyze the Webpack Bundles
// const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin

const appDirectory = fs.realpathSync(process.cwd())
const resolveApp = (relativePath: string) => path.resolve(appDirectory, relativePath)

module.exports = (env: any) => {
  return ({
    output: {
      path: resolveApp('dist'),
      filename: 'powerup-[name]-[contenthash].js',
      library: 'react',
      clean: true
    },
    entry: {
      capabilities: resolveApp(path.join('src', 'capabilities.ts')),
      addon: resolveApp(path.join('src', 'addon.tsx'))
    },
    module: {
      rules: [
        {
          test: /\.hbs$/,
          loader: 'handlebars-loader'
        },
        {
          test: /\.tsx?$/,
          loader: 'babel-loader',
          exclude: [
            /(node_modules)/,
            path.join(path.resolve(__dirname, 'src'), 'dev-watch.ts')
          ],
          options: {
            // This is a feature of `babel-loader` for Webpack (not Babel itself).
            // It enables caching results in ./node_modules/.cache/babel-loader/
            // directory for faster rebuilds.
            cacheDirectory: true,
            plugins: [
              dev && require.resolve('react-refresh/babel'),
            ].filter(Boolean),
          },
        },
        {
          test: /\.js$/,
          use: ['source-map-loader'],
          enforce: 'pre',
          exclude: /(node_modules)/
        },
        {
          test: /\.css$/,
          use: [MiniCssExtractPlugin.loader, 'css-loader']
        },
        {
          test: /\.s[ac]ss$/i,
          use: [
            'sass-loader'
          ],
        },
        {
          test: /\.(jpe?g|png|gif|svg)$/i,
          loader: 'url-loader',
          options: {
            limit: 10000,
          },
        },
      ],
    },
    devtool: !env.WEBPACK_BUILD ? 'source-map' : undefined,
    plugins: [
      new webpack.EnvironmentPlugin([
        'NODE_ENV',
        'PORT',
        'POWERUP_NAME',
        'POWERUP_ID',
        'POWERUP_APP_KEY',
        'CONTEXT_PATH',
        'OPTRO_API_KEY',
        'OPTRO_LICENSE_TYPE'
      ]),
      new CopyWebpackPlugin({
        patterns: [
          { from: 'static', to: 'static' },
        ],
      }),
      new MiniCssExtractPlugin(),
      // new BundleAnalyzerPlugin(),
      new HtmlWebpackPlugin({
        chunks: ['capabilities'],
        template: 'templates/index.hbs',
        favicon: 'static/favicon.png',
        filename: 'index.html',
        templateParameters: {
          powerup_id: process.env.POWERUP_ID,
          powerup_name: process.env.POWERUP_NAME
        }
      }),
      !env.WEBPACK_BUILD && new webpack.HotModuleReplacementPlugin(),
      !env.WEBPACK_BUILD && new ReactRefreshWebpackPlugin(),
    ].filter(Boolean),
    optimization: !env.WEBPACK_BUILD ? {
      minimize: true,
      usedExports: 'global',
      splitChunks: {
        chunks: 'async',
        minSize: 50000,
        maxSize: 244000,
        minChunks: 1,
        maxAsyncRequests: 30,
        maxInitialRequests: 30,
        cacheGroups: {
          defaultVendors: {
            test: /[\\/]node_modules[\\/]/,
            priority: -10,
            reuseExistingChunk: true
          },
          default: {
            minChunks: 2,
            priority: -20,
            reuseExistingChunk: true
          }
        }
      }
    } : undefined,
    resolve: {
      extensions: ['.ts', '.tsx', '.js', '.css']
    },
    devServer: !env.WEBPACK_BUILD ? {
      contentBase: path.join(__dirname, 'dist'),
      public: `${env.POWERUP_URL}`,
      hot: true,
      port: 3000,
      disableHostCheck: true,
      stats: {
        colors: true,
        hash: false,
        version: false,
        timings: false,
        assets: false,
        chunks: false,
        modules: false,
        reasons: true,
        children: false,
        source: false,
        errors: true,
        errorDetails: true,
        warnings: true,
        publicPath: false
      }
    } : undefined,
    mode: env.WEBPACK_BUILD ? 'production' : 'development'
  })
}