const merge = require('webpack-merge')
const commonConf = require('./webpack.common.js')
const MiniCssExtractPlugin = require('mini-css-extract-plugin')
const TerserJSPlugin = require('terser-webpack-plugin')
const OptimizeCSSAssetsPlugin = require('optimize-css-assets-webpack-plugin')
const CleanWebpackPlugin = require('clean-webpack-plugin')
const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin
const webpack = require('webpack')
const path = require('path')

module.exports = env => {
  const prodConf = {
    mode: 'production',
    devtool: 'cheap-module-source-map',
    output: {
      path: env && env.test ? path.resolve(__dirname, '../../../pub/zq2019/t_ydzy_simulator') : path.resolve(__dirname, '../../../pub/zq2019/ydzy_simulator'),
      publicPath: env && env.test ? '//pub.dwstatic.com/zq2019/t_ydzy_simulator/' : '//pub.dwstatic.com/zq2019/ydzy_simulator/',
      filename: 'js/[name]_[contenthash:5].js',
    },
    module: {
      rules: [
        {
          test: /(?<!\.module)\.(scss|css)$/,
          use: [
            MiniCssExtractPlugin.loader,
            {
              loader: 'css-loader',
              options: {
                importLoaders: 2
              }
            },
            'sass-loader',
            'postcss-loader'
          ]
        },
        {
          test: /(?<=\.module)\.(scss|css)$/,
          use: [
            MiniCssExtractPlugin.loader,
            {
              loader: 'css-loader',
              options: {
                importLoaders: 2,
                modules: true
              }
            },
            'sass-loader',
            'postcss-loader'
          ]
        }
      ]
    },
    plugins: [
      new MiniCssExtractPlugin({
        filename: 'css/[name]_[contenthash:5].css',
        chunkFilename: 'css/[id]_[contenthash:5].css'
      }),
      new CleanWebpackPlugin(),
      new webpack.DefinePlugin({
        DEV: JSON.stringify(false)
      })
    ].concat(env && env.analyse ? new BundleAnalyzerPlugin() : []),
    optimization: {
      minimizer: [
        new TerserJSPlugin({
          sourceMap: true
        }),
        new OptimizeCSSAssetsPlugin({})
      ]
    }
  }
  return merge(commonConf, prodConf)
}