const path = require('path');
const webpack = require('webpack');
var os = require("os");

const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const { GitRevisionPlugin } = require('git-revision-webpack-plugin');
const gitRevisionPlugin = new GitRevisionPlugin();

var babelOptions = {
  "presets": [
    [
      "@babel/preset-env",
      {
        "corejs": { "version": 3 },
        "useBuiltIns": "usage",
        "targets": {
          "edge": "17",
          "firefox": "60",
          "chrome": "67",
          "safari": "11.1",
          "ie": "11"
        }
      }
    ]
  ],
  "plugins": [
    ["@babel/plugin-proposal-decorators", { "decoratorsBeforeExport": true }],
    ["@babel/plugin-proposal-class-properties"],
    ["@babel/transform-runtime"]
  ]
};

const VERBOSE = Object.getOwnPropertyNames(process.env).includes("VERBOSE") || !true;
const MODE = process.env.WEBPACK_MODE || "production"
const DEBUG = MODE != "production";

let commitHash = gitRevisionPlugin.commithash();

let devrules = [{ test: /\.tsx?$/, loader: "ts-loader" }];
let prodrules = [{
  test: /\.ts(x?)$/,
  exclude: /node_modules/,
  use: [
    {
      loader: 'babel-loader',
      options: babelOptions
    },
    {
      loader: 'ts-loader'
    }
  ]
},
{
  test: /\.js$/,
  exclude: /node_modules/,
  use: [
    {
      loader: 'babel-loader',
      options: babelOptions
    }
  ]
}];

console.log("DEBUG:", DEBUG);

module.exports = {
  mode: MODE,
  cache: DEBUG,
  entry: './src/main.ts',
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'bundle.js',
  },
  stats: {
    preset: VERBOSE ? "detailed" : "normal",
    colors: true,
    timings: true,
  },
  plugins: [
    new MiniCssExtractPlugin(),
    new HtmlWebpackPlugin({ title: "VaultUI" }),
    new webpack.DefinePlugin({
      BUILD_STRING:
        JSON.stringify(`Built At: ${new Date().toString()} by ${os.userInfo().username}@${os.hostname()} on commit ${commitHash}`),
    })
  ],
  devServer: {
    open: process.env.BROWSER || "microsoft-edge-dev",
  },
  resolve: {
    modules: ['node_modules'],
    extensions: ['.tsx', '.ts', '.js', ".mjs"],
  },

  module: {
    rules: [
      {
        test: /\.(sa|sc|c)ss$/,
        use: [
          MiniCssExtractPlugin.loader,
          "css-loader",
          "sass-loader"
        ],
      },
      ...(DEBUG ? devrules : prodrules),
    ],
  },
};