'use strict'
const webpack = require('webpack')
const CompressionPlugin = require('compression-webpack-plugin')
const zlib = require('zlib')
const path = require('path')
const defaultSettings = require('./src/settings.js')

function resolve(dir) {
  return path.join(__dirname, dir)
}

const name = defaultSettings.title; // 标题

const port = process.env.port || process.env.npm_config_port || 8087 // 端口

// vue.config.js 配置说明
//官方vue.config.js 参考文档 https://cli.vuejs.org/zh/config/#css-loaderoptions
// 这里只列一部分，具体配置参考文档
module.exports = {
  // 部署生产环境和开发环境下的URL。
  // 默认情况下，Vue CLI 会假设你的应用是被部署在一个域名的根路径上
  // 例如 https://www.ruoyi.vip/。如果应用被部署在一个子路径上，你就需要用这个选项指定这个子路径。例如，如果你的应用被部署在 https://www.ruoyi.vip/admin/，则设置 baseUrl 为 /admin/。
  publicPath: "/",
  // publicPath: process.env.NODE_ENV === "production" ? "/" : "/",
  // 在npm run build 或 yarn build 时 ，生成文件的目录名称（要和baseUrl的生产环境路径一致）（默认dist）
  outputDir: 'dist',
  // 用于放置生成的静态资源 (js、css、img、fonts) 的；（项目打包之后，静态资源会放在这个文件夹下）
  assetsDir: 'static',
  // assetsSubDirectory: 'static',
  // baseUrl: '/party/',
  // 是否开启eslint保存检测，有效值：ture | false | 'error'
  lintOnSave: process.env.NODE_ENV === 'development',
  // 如果你不需要生产环境的 source map，可以将其设置为 false 以加速生产环境构建。
  productionSourceMap: false,
  // webpack-dev-server 相关配置
  devServer: {
    host: '0.0.0.0',
    port: port,
    // proxy: {
    //   // detail: https://cli.vuejs.org/config/#devserver-proxy
    //   ['/api']: {
    //     target: `http://120.224.91.44:3998`,
    //     //target: `http://127.0.0.1:3998`,
    //     changeOrigin: true,
    //     pathRewrite: {
    //       ['^' + '/api']: '/api'
    //     }
    //   }
    // },
    disableHostCheck: true
  },
  configureWebpack: {
    name: name,
    resolve: {
      alias: {
        '@': resolve('src')
      }
    },
    externals: {
      'AMap': 'AMap',
      'AMapUI': 'AMapUI',
      'T': 'T'
    },
    // 开启分离 js
    optimization: {
      runtimeChunk: 'single',
      splitChunks: {
        chunks: 'all',
        maxInitialRequests: Infinity,
        minSize: 1000 * 60,
        cacheGroups: {
          vue: {
            name: 'chunk-vue',
            test: /[\\/]node_modules[\\/](vue|vue-router)[\\/]/,
            priority: 40
          },
          vconsole: {
            name: 'chunk-library',
            test: /[\\/]node_modules[\\/](element-ui|vxe-table|quill|echarts|echarts-gl)[\\/]/,
            priority: 20
          },
          vendors: {
            name: 'chunk-vendors',
            minChunks: 2,
            reuseExistingChunk: true,
            priority: 10,
            chunks: 'all',
            test: /[\\/]node_modules[\\/]/
          },
          commons: {
            name: 'chunk-common',
            chunks: 'all',
            reuseExistingChunk: true,
            priority: 0 // 优先级，先打包到哪个组里面，值越大，优先级越高
          }
        }
      }
    },
    //测试环境不压缩
    plugins: process.env.NODE_ENV !== 'development' ? [
      new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/),
      // 下面两项配置才是 compression-webpack-plugin 压缩配置
      // 压缩成 .gz 文件
      new CompressionPlugin({
        filename: '[path][base].gz',
        algorithm: 'gzip',
        test: /\.js$|\.css$|\.html$/,
        threshold: 10240,
        minRatio: 0.8
      }),
      // 压缩成 .br 文件，如果 zlib 报错无法解决，可以注释这段使用代码，一般本地没问题，需要注意线上服务器会可能发生找不到 zlib 的情况。
      new CompressionPlugin({
        filename: '[path][base].br',
        algorithm: 'brotliCompress',
        test: /\.(js|css|html|svg)$/,
        compressionOptions: {
          params: {
            [zlib.constants.BROTLI_PARAM_QUALITY]: 11
          }
        },
        threshold: 10240,
        minRatio: 0.8
      })
    ] : [],
  },
  chainWebpack(config) {
    config.plugins.delete('preload') // TODO: need test
    config.plugins.delete('prefetch') // TODO: need test

    // set svg-sprite-loader
    config.module
      .rule('svg')
      .exclude.add(resolve('src/assets/icons'))
      .end()
    config.module
      .rule('icons')
      .test(/\.svg$/)
      .include.add(resolve('src/assets/icons'))
      .end()
      .use('svg-sprite-loader')
      .loader('svg-sprite-loader')
      .options({
        symbolId: 'icon-[name]'
      })
      .end()

    // set preserveWhitespace
    config.module
      .rule('vue')
      .use('vue-loader')
      .loader('vue-loader')
      .tap(options => {
        options.compilerOptions.preserveWhitespace = true
        return options
      })
      .end()

    config
      // https://webpack.js.org/configuration/devtool/#development
      .when(process.env.NODE_ENV === 'development',
        config => config.devtool('cheap-source-map')
      )

    config
      .when(process.env.NODE_ENV !== 'development',
        config => {
          config
            .plugin('ScriptExtHtmlWebpackPlugin')
            .after('html')
            .use('script-ext-html-webpack-plugin', [{
              // `runtime` must same as runtimeChunk name. default is `runtime`
              inline: /runtime\..*\.js$/
            }])
            .end()
          config
            .optimization.splitChunks({
            chunks: 'all',
            cacheGroups: {
              libs: {
                name: 'chunk-libs',
                test: /[\\/]node_modules[\\/]/,
                priority: 10,
                chunks: 'initial' // only package third parties that are initially dependent
              },
              elementUI: {
                name: 'chunk-elementUI', // split elementUI into a single package
                priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
                test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
              },
              commons: {
                name: 'chunk-commons',
                test: resolve('src/components'), // can customize your rules
                minChunks: 3, //  minimum common number
                priority: 5,
                reuseExistingChunk: true
              }
            }
          })
          config.optimization.runtimeChunk('single')
        }
      )
  }
}