/* eslint-disable @typescript-eslint/no-var-requires */
const path = require('path')
const webpack = require('webpack')
const { VueLoaderPlugin } = require('vue-loader')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const MiniCssExtractPlugin = require('mini-css-extract-plugin')
const CssMinimizerPlugin = require('css-minimizer-webpack-plugin')

// const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin

const isProd = process.env.NODE_ENV === 'production'

/*
 * 是否使用生产环境的 vue
 */
const isVueProd = process.env.VUE_BUNDLE === 'production' || isProd
const vueBundle = isVueProd ? 'vue.esm-browser.prod.js' : 'vue.esm-browser.js'
const isPlay = !!process.env.PLAY_ENV

const config = {
  mode: isProd ? 'production' : 'development',
  devtool: !isProd && 'cheap-module-eval-source-map',
  entry: isPlay
    ? path.resolve(__dirname, './play.js')
    : path.resolve(__dirname, './entry.js'),
  output: {
    path: path.resolve(__dirname, '../website-dist'),
    publicPath: '/',
    filename: isProd ? '[name].[hash].js' : '[name].js',
  },
  module: {
    rules: [
      {
        test: /\.vue$/,
        use: 'vue-loader',
      },
      {
        test: /\.(ts|js)x?$/,
        exclude: /node_modules/,
        loader: 'babel-loader',
      },
      {
        test: /\.md$/,
        use: [
          {
            loader: 'vue-loader',
            options: {
              compilerOptions: {
                preserveWhitespace: false,
              },
            },
          },
          {
            loader: path.resolve(__dirname, './md-loader/index.js'),
          },
        ],
      },
      {
        test: /\.(svg|otf|ttf|woff2?|eot|gif|png|jpe?g)(\?\S*)?$/,
        loader: 'url-loader',
        // todo: 这种写法有待调整
        query: {
          limit: 10000,
          name: path.posix.join('static', '[name].[hash:7].[ext]'),
        },
      },
    ],
  },
  resolve: {
    extensions: ['.ts', '.tsx', '.js', '.vue', '.json'],
    alias: {
      vue: `vue/dist/${vueBundle}`,
      examples: path.resolve(__dirname),
    },
  },
  plugins: [
    new VueLoaderPlugin(),
    new HtmlWebpackPlugin({
      template: './website/index.tpl',
      filename: './index.html',
      favicon: './website/favicon.ico',
    }),
    // new BundleAnalyzerPlugin(),
  ],
  devServer: {
    inline: true,
    // 如果使用 vue 的生产环境构建包，无法启用 hmr
    // 因为生产环境下 vue 没有注入 hmr 必须的 __VUE_HMR_RUNTIME__ api
    hot: !isVueProd,
    stats: 'minimal',
    publicPath: '/',
    contentBase: __dirname,
    overlay: true,
  },
  optimization: {
    minimize: true,
    minimizer: [
      new CssMinimizerPlugin(),
    ],
  },
}

const cssRule = {
  test: /\.(sass|scss|css)$/,
  use: [
    'css-loader',
    {
      loader: 'sass-loader',
      options: {
        implementation: require('sass'),
      },
    },
  ],
}

// if (isProd) {
config.plugins.push(
  new MiniCssExtractPlugin({
    filename: '[name].[contenthash].css',
    chunkFilename: '[id].[contenthash].css',
  }),
  new webpack.DefinePlugin({
    __VUE_OPTIONS_API__: JSON.stringify(true),
    __VUE_PROD_DEVTOOLS__: JSON.stringify(false),
  }),
)
cssRule.use.unshift(MiniCssExtractPlugin.loader)
// } else {
cssRule.use.unshift('style-loader')
// }
config.module.rules.push(cssRule)
module.exports = config