const path = require('path');
const CopyWebpackPlugin = require('copy-webpack-plugin');
const CleanWebpackPlugin = require('clean-webpack-plugin');
const GasPlugin = require('gas-webpack-plugin');
const UglifyJSPlugin = require('uglifyjs-webpack-plugin');
const WebpackCleanPlugin = require('webpack-clean');
const HtmlWebpackPlugin = require("html-webpack-plugin");
const HtmlWebpackInlineSourcePlugin = require('html-webpack-inline-source-plugin');

// settings
const destination = 'dist';
const htmlTemplate = './src/client/dialog-template.html';
const htmlWebpackInlineSourcePlugin = new HtmlWebpackInlineSourcePlugin();
const webpackCleanPlugin = new WebpackCleanPlugin([
  destination + '/' + 'main.js',
]);

// Client entrypoints:
const clientEntrypoints = [
  {
    name: "CLIENT - main dialog",
    entry: "./src/client/main.jsx",
    filename: "main.html"
  },
  {
    name: "CLIENT - about sidebar",
    entry: "./src/client/about.jsx",
    filename: "about.html"
  },
];

const sharedConfigSettings = {
  optimization: {
    minimizer: [
      new UglifyJSPlugin({
        uglifyOptions: {
          warnings: false,
          ie8: true,
          mangle: false,
          compress: {
            properties: false
          },
          output: {
            beautify: true
          }
        }
      })
    ]
  },
  module: {},
};

const eslintConfig = {
  enforce: 'pre',
  test: /\.jsx?$/,
  exclude: /node_modules/,
  loader: 'eslint-loader',
  options: {
    cache: false,
    failOnError: false,
    fix: true
  }
};

const appsscriptConfig = {
  name: "COPY APPSSCRIPT.JSON",
  entry: "./appsscript.json",
  plugins: [
    new CleanWebpackPlugin([destination]),
    new CopyWebpackPlugin([
      {
        from: './appsscript.json'
      }
    ])
  ]
};

const clientConfig = {
  ...sharedConfigSettings,
  output: {
    path: path.resolve(__dirname, destination),
  },
  resolve: {
    extensions: ['.js', '.jsx', '.json']
  },
  module: {
    rules: [
      // eslintConfig,
      {
        test: /\.jsx$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader"
        }
      },
      {
        test: /\.css$/,
        use: [ 'style-loader', 'css-loader' ]
      }
    ],
  },
};

const clientConfigs = clientEntrypoints.map((clientEntrypoint) => {
  return ({
    ...clientConfig,
    name: clientEntrypoint.name,
    entry: clientEntrypoint.entry,
    plugins: [
      new HtmlWebpackPlugin({
        template: htmlTemplate,
        filename: clientEntrypoint.filename,
        inlineSource: '.(js|css)$' // embed all javascript and css inline
      }),
      htmlWebpackInlineSourcePlugin,
      webpackCleanPlugin,
    ],
  })
});

const serverConfig = {
  ...sharedConfigSettings,
  name: "SERVER",
  entry: "./src/server/code.js",
  output: {
    filename: 'code.js',
    path: path.resolve(__dirname, destination),
    libraryTarget: 'this'
  },
  module: {
    rules: [
      // eslintConfig,
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader"
        }
      },
    ],
  },
  plugins: [
    new GasPlugin()
  ]
};

module.exports = [
  appsscriptConfig,
  ...clientConfigs,
  serverConfig,
];