/* eslint-disable import/no-named-as-default-member */
const path = require('path');
const _ = require('lodash');
const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const ModuleScopePlugin = require('react-dev-utils/ModuleScopePlugin');
// const InterpolateHtmlPlugin = require('react-dev-utils/InterpolateHtmlPlugin');
const CaseSensitivePathsPlugin = require('case-sensitive-paths-webpack-plugin');
const ProgressBarPlugin = require('progress-bar-webpack-plugin');
const WebpackPluginFrTheme = require('webpack-plugin-fr-theme');
const AddAssetHtmlPlugin = require('add-asset-html-webpack-plugin');
// const HardSourceWebpackPlugin = require('hard-source-webpack-plugin');
const CircularDependencyPlugin = require('circular-dependency-plugin');
const HardSourceWebpackPlugin = require('hard-source-webpack-plugin');
const HappyPack = require('happypack');
const os = require('os');
const getClientEnvironment = require('./env');
const paths = require('./paths');
const loaders = require('./loader.dev');
// const Jarvis = require('webpack-jarvis');

const publicUrl = '';
const contextPath = process.env._SETTING_CONTEXT_PATH;
const env = getClientEnvironment(publicUrl);
// 根据系统的内核数量 指定线程池个数 也可以其他数量
/*eslint-disable babel/new-cap */
const happyThreadPool = HappyPack.ThreadPool({ size: os.cpus().length });

module.exports = {
  mode: 'development',
  cache: true,
  entry: {
    app: [
      // require.resolve('babel-polyfill'),
      'webpack-dev-server/client?http://0.0.0.0:3000',
      'webpack/hot/only-dev-server',
      paths.appIndexJs,
    ],
    vendor: [
      'react',
      'prop-types',
      'react-dom',
      'react-router',
      'react-router-dom',
      'axios',
      'lodash',
      'moment',
      'normalizr',
    ],
  },
  // devtool: 'cheap-module-eval-source-map',
  devtool: 'cheap-module-source-map',
  // devtool: 'eval',
  output: {
    path: paths.appBuild,
    pathinfo: true,
    publicPath: '',
    filename: 'static/js/[name].[hash:7].js',
    sourceMapFilename: 'static/js/[name].[hash:7].map',
    chunkFilename: 'static/js/[name].[chunkhash:7].chunk.js',
  },
  resolve: {
    modules: [paths.appSrc, paths.appNodeModules],
    extensions: ['.jsx', '.js', '.scss', '.css', '.json'],
    alias: {
      '@': paths.appSrc,
    },
    plugins: [
      // 阻止从src和node_modules目录之外导入模块
      new ModuleScopePlugin(paths.appSrc, [paths.appPackageJson]),
    ],
  },
  target: 'web',
  module: {
    rules: [
      loaders.eslintLoader,
      {
        oneOf: [
          {
            test: /\.(js|jsx)$/,
            use: `happypack/loader?id=babel`,
            exclude: /node_modules/,
            include: paths.appSrc,
          },
          loaders.cssLoaderRule,
          loaders.scssLoaderRule,
          {
            test: /\.(less)$/,
            use: `happypack/loader?id=less`,
          },
          loaders.svgSpriteLoader,
          loaders.fontWoffLoader,
          loaders.fontTtfLoader,
          loaders.mediaLoader,
          loaders.otherLoader,
        ],
      },
    ],
  },
  optimization: {
    namedModules: true,
    runtimeChunk: {
      name: 'manifest',
    },
    splitChunks: {
      chunks: 'async',
      minSize: 30000,
      minChunks: 1,
      maxAsyncRequests: 5,
      maxInitialRequests: 3,
      name: false,
      cacheGroups: {
        vendor: {
          name: 'vendor',
          chunks: 'initial',
          priority: -10,
          reuseExistingChunk: false,
          test: /node_modules\/(.*)\.js/,
        },
      },
    },
  },
  performance: {
    // 开启性能提示
    hints: false,
  },
  plugins: [
    new WebpackPluginFrTheme(),
    new ProgressBarPlugin({
      format: 'Build [:bar] :percent (:elapsed seconds)',
      clear: false,
    }),
    // new HardSourceWebpackPlugin(),
    new webpack.NamedModulesPlugin(),
    new webpack.optimize.ModuleConcatenationPlugin(),
    // 创建编译时配置的全局常量
    new webpack.DefinePlugin(env.stringified),
    // 强制执行所有必需模块的整个路径，以匹配确切的大小写
    new CaseSensitivePathsPlugin(),
    new CircularDependencyPlugin({
      exclude: /node_modules/,
      failOnError: true,
      allowAsyncCycles: false,
      cwd: process.cwd(),
    }),
    new HappyPack({
      id: 'babel',
      loaders: [loaders.jsLoader],
      threadPool: happyThreadPool,
      verbose: true,
    }),
    new HappyPack({
      id: 'less',
      loaders: ['style-loader', loaders.cssLoaderConfig, loaders.postCssLoaderConfig, loaders.lessLoaderConfig],
      threadPool: happyThreadPool,
      verbose: true,
    }),
    new webpack.DllReferencePlugin({
      manifest: require(path.join(paths.appDist, 'vendor.manifest.json')),
      sourceType: 'var',
      context: paths.appSrc,
    }),
    // new InterpolateHtmlPlugin(env.raw),
    new HtmlWebpackPlugin({
      hash: false, // 为所有注入的静态资源添加webpack每次编译产生的唯一hash值
      inject: true, // 向templateContent中注入所有静态资源,注入到body元素底部
      template: paths.appHtml,
      sourceMap: true,
      basePath: _.isEmpty(contextPath) ? '/' : `/${contextPath}/`,
    }),
    new AddAssetHtmlPlugin([
      {
        hash: true,
        filepath: require.resolve(path.join(paths.appDist, 'vendor.dll.js')),
      },
    ]),
    // new Jarvis({
    //   port: 1337,
    // }),
    // 启用HRM
    new webpack.HotModuleReplacementPlugin(),
    /* eslint-disable no-useless-escape */
    // 上下文替换插件(ContextReplacementPlugin) 允许你覆盖查找规则,减少打包时的local资源
    new webpack.ContextReplacementPlugin(/moment[\/\\]locale$/, /en-gb|zh-cn/),
    // //模块提供中间缓存步骤
    new HardSourceWebpackPlugin(),
    new HardSourceWebpackPlugin.ExcludeModulePlugin([
      {
        // HardSource works with mini-css-extract-plugin but due to how
        // mini-css emits assets, assets are not emitted on repeated builds with
        // mini-css and hard-source together. Ignoring the mini-css loader
        // modules, but not the other css loader modules, excludes the modules
        // that mini-css needs rebuilt to output assets every time.
        test: /mini-css-extract-plugin[\\/]dist[\\/]loader/,
      },
    ]),
  ],
};