const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const increaseSpecificity = require('postcss-increase-specificity');
const autoprefixer = require('autoprefixer');
const CopyPlugin = require('copy-webpack-plugin');
const path = require('path');

const devMode = process.env.NODE_ENV !== 'production';

const publicDir = path.join(__dirname, 'public');
const distDir = path.join(__dirname, 'dist');

const defaultConfig = {
  mode: process.env.NODE_ENV || 'development',
  devServer: {
    contentBase: publicDir,
    port: 9000,
  },
  plugins: [
    // new CleanWebpackPlugin({protectWebpackAssets: false}),
    new MiniCssExtractPlugin({
      // Options similar to the same options in webpackOptions.output
      // both options are optional
      filename: devMode ? '[name].css' : '[name].[hash].css',
      chunkFilename: devMode ? '[id].css' : '[id].[hash].css',
    }),
    new CopyPlugin([
      { from: 'public', to: '.' },
    ]),
  ],
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        use: ['babel-loader'],
      },
      {
        test: /\.js$/,
        exclude: /node_modules/,
        loader: 'eslint-loader',
        options: {
          emitWarning: true,
        },
      },
      {
        test: /\.(scss|css)$/,
        use: [
          // fallback to style-loader in development
          // devMode ? 'style-loader' : MiniCssExtractPlugin.loader,
          'style-loader',
          'css-loader',
          'cssimportant-loader',
          {
            loader: 'postcss-loader',
            options: {
              ident: 'postcss',
              plugins: [
                increaseSpecificity({
                  stackableRoot: '.cleanslate',
                  repeat: 1,
                }),
                autoprefixer()
              ],
              sourceMap: devMode,
            },
          },
          'sass-loader',
        ],
      },
    ],
  },
  resolve: {
    extensions: ['*', '.js', '.jsx'],
  },
  node: { fs: 'empty' }
};

module.exports = [{
  ...defaultConfig,
  entry: './src/outputs/embeddable-chatbox.js',
  output: {
    path: distDir,
    publicPath: '/',
    filename: 'chatbox.js',
    library: 'EmbeddableChatbox',
    libraryExport: 'default',
    libraryTarget: 'window',
  },
}, {
  ...defaultConfig,
  entry: './src/outputs/bookmarklet.js',
  output: {
    path: distDir,
    publicPath: '/',
    filename: 'bookmarklet.js',
  },
}, {
  ...defaultConfig,
  entry: './src/outputs/component.js',
  output: {
    path: distDir,
    publicPath: '/',
    filename: 'component.js',
    library: 'Chatbox',
    libraryExport: 'default',
    libraryTarget: 'commonjs2',
  },
  externals: {
    react: {
        commonjs: "react",
        commonjs2: "react",
        amd: "React",
        root: "React"
    },
    "react-dom": {
        commonjs: "react-dom",
        commonjs2: "react-dom",
        amd: "ReactDOM",
        root: "ReactDOM"
    }
  }
}];