const lodash = require('lodash');
const CopyPlugin = require('copy-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const TsconfigPathsPlugin = require('tsconfig-paths-webpack-plugin');
const path = require('path');

function srcPaths(src) {
  return path.join(__dirname, src);
}

const isEnvProduction = process.env.NODE_ENV === 'production';
const isEnvDevelopment = process.env.NODE_ENV === 'development';

// #region Common settings
const commonConfig = {
  devtool: isEnvDevelopment ? 'source-map' : false,
  mode: isEnvProduction ? 'production' : 'development',
  output: { path: srcPaths('dist') },
  node: { __dirname: false, __filename: false },
  resolve: {
    extensions: ['.js', '.json', '.ts', '.tsx'],
    plugins: [new TsconfigPathsPlugin({
      configFile: './tsconfig.json',
      extensions: ['.js', '.json', '.ts', '.tsx'],
    })],
  },
  module: {
    rules: [
      {
        test: /\.(ts|tsx)$/,
        exclude: /node_modules/,
        loader: 'ts-loader',
      },
      {
        test: /\.(scss|css)$/,
        use: ['style-loader', 'css-loader'],
      },
      {
        test: /\.(jpg|png|svg|ico|icns)$/,
        loader: 'file-loader',
        options: {
          name: '[path][name].[ext]',
        },
      },
    ],
  },
};
// #endregion

const mainConfig = lodash.cloneDeep(commonConfig);
mainConfig.entry = './src/main/main.ts';
mainConfig.target = 'electron-main';
mainConfig.output.filename = 'main.bundle.js';
mainConfig.plugins = [
  new CopyPlugin({
    patterns: [
      {
        from: 'package.json',
        to: 'package.json',
        transform: (content, _path) => {
          const jsonContent = JSON.parse(content);
          const electronVersion = jsonContent.devDependencies.electron;

          delete jsonContent.devDependencies;
          delete jsonContent.optionalDependencies;
          delete jsonContent.scripts;
          delete jsonContent.build;

          jsonContent.main = './main.bundle.js';
          jsonContent.scripts = { start: 'electron ./main.bundle.js' };
          jsonContent.devDependencies = { electron: electronVersion }

          return JSON.stringify(jsonContent, undefined, 2);
        },
      },
    ],
  }),
];

const preloadConfig = lodash.cloneDeep(commonConfig);
preloadConfig.entry = './src/preload/preload.ts';
preloadConfig.target = 'electron-preload';
preloadConfig.output.filename = 'preload.bundle.js';

const rendererConfig = lodash.cloneDeep(commonConfig);
rendererConfig.entry = './src/renderer/renderer.tsx';
rendererConfig.target = 'electron-renderer';
rendererConfig.output.filename = 'renderer.bundle.js';
rendererConfig.plugins = [
  new HtmlWebpackPlugin({
    template: path.resolve(__dirname, './public/index.html'),
  }),
];

module.exports = [mainConfig, preloadConfig, rendererConfig];