var HtmlWebpackPlugin = require('html-webpack-plugin');
const webpack = require('webpack');
const path = require('path');
const CompressionPlugin = require('compression-webpack-plugin');
const TerserPlugin = require('terser-webpack-plugin');

const environment = process.env.NODE_ENV === 'production' ? 'production' : 'development';

const API_URL = {
  production: process.env.TOOLJET_SERVER_URL || (process.env.SERVE_CLIENT !== 'false' ? '__REPLACE_SUB_PATH__' : ''),
  development: `http://localhost:${process.env.TOOLJET_SERVER_PORT || 3000}`,
};

const ASSET_PATH = process.env.ASSET_PATH || '';

function stripTrailingSlash(str) {
  return str.replace(/[/]+$/, '');
}

module.exports = {
  mode: environment,
  optimization: {
    minimize: environment === 'production',
    usedExports: true,
    runtimeChunk: 'single',
    minimizer: [
      new TerserPlugin({
        minify: TerserPlugin.esbuildMinify,
        terserOptions: {
          ...(environment === 'production' && { drop: ['debugger'] }),
        },
        parallel: environment === 'production',
      }),
    ],
    splitChunks: {
      cacheGroups: {
        vendors: {
          test: /[\\/]node_modules[\\/]/,
          name: 'vendor',
          chunks: 'all',
        },
      },
    },
  },
  target: 'web',
  resolve: {
    extensions: ['.js', '.jsx', '.png', '.wasm', '.tar', '.data'],
    alias: {
      '@': path.resolve(__dirname, 'src/'),
      '@ee': path.resolve(__dirname, 'ee/'),
    },
  },
  devtool: environment === 'development' ? 'inline-source-map' : false,
  module: {
    rules: [
      {
        test: /\.ttf$/,
        use: ['file-loader'],
      },
      {
        test: /\.wasm$/,
        use: ['file-loader'],
      },
      {
        test: /\.tar$/,
        use: ['file-loader'],
      },
      {
        test: /\.data$/,
        use: ['file-loader'],
      },
      {
        test: /\.svg$/,
        use: [
          {
            loader: '@svgr/webpack',
            options: {
              limit: 10000,
            },
          },
        ],
      },
      {
        test: /\.css$/,
        use: [
          {
            loader: 'style-loader',
          },
          {
            loader: 'css-loader',
          },
        ],
      },
      {
        test: /\.scss$/,
        use: [
          {
            loader: 'style-loader',
          },
          {
            loader: 'css-loader',
          },
          {
            loader: 'sass-loader',
          },
        ],
      },
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        resolve: {
          extensions: ['.js', '.jsx'],
        },
        use: {
          loader: 'babel-loader',
          options: {
            plugins: [
              ['import', { libraryName: 'lodash', libraryDirectory: '', camel2DashComponentName: false }, 'lodash'],
            ],
          },
        },
      },
      {
        test: /\.html$/,
        loader: 'html-loader',
      },
    ],
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: './src/index.ejs',
      favicon: './assets/images/logo.svg',
    }),
    new CompressionPlugin({
      test: /\.js(\?.*)?$/i,
      algorithm: 'gzip',
    }),
    new webpack.ContextReplacementPlugin(/moment[/\\]locale$/, /(en)$/),
    new webpack.DefinePlugin({
      'process.env.ASSET_PATH': JSON.stringify(ASSET_PATH),
      'process.env.SERVE_CLIENT': JSON.stringify(process.env.SERVE_CLIENT),
    }),
  ],
  devServer: {
    historyApiFallback: { index: ASSET_PATH },
    static: {
      directory: path.resolve(__dirname, 'assets'),
      publicPath: '/assets/',
    },
  },
  output: {
    publicPath: ASSET_PATH,
    path: path.resolve(__dirname, 'build'),
  },
  externals: {
    // global app config object
    config: JSON.stringify({
      apiUrl: `${stripTrailingSlash(API_URL[environment]) || ''}/api`,
      SERVER_IP: process.env.SERVER_IP,
      COMMENT_FEATURE_ENABLE: process.env.COMMENT_FEATURE_ENABLE ?? true,
      ENABLE_TOOLJET_DB: process.env.ENABLE_TOOLJET_DB ?? true,
      ENABLE_MULTIPLAYER_EDITING: true,
      TOOLJET_MARKETPLACE_URL:
        process.env.TOOLJET_MARKETPLACE_URL || 'https://tooljet-plugins-production.s3.us-east-2.amazonaws.com',
    }),
  },
};