'use strict'
const path = require('path')
const webpack = require('webpack')
const { defineConfig } = require('@vue/cli-service')
const name = process.env.VUE_APP_TITLE || '中正企业信息' // 网页标题
const CompressionWebpackPlugin = require("compression-webpack-plugin");
function resolve(dir) {
  return path.join(__dirname, dir)
}
module.exports = defineConfig({
  transpileDependencies: true,
  lintOnSave: false,
  devServer: {
    host: '0.0.0.0',
    port: 5099,
    open: true,
  },
  configureWebpack: {
    output: { // 输出重构  打包编译后的 文件名称  【模块名称.版本号.时间戳】
      filename: `js/[name].[hash].js`,
      chunkFilename: `js/[id].[hash].js`

    },
    name: name,
    // 生产环境，则添加不参与打包的包名和依赖包的名称
    externals: {
      'vue': 'Vue',
      'axios': 'axios',
      'element-ui': 'ELEMENT',
      'vue-router': 'VueRouter',
    },
    resolve: {
      alias: {
        '@': resolve('src')
      }
    }
  },
  chainWebpack(config) {
    // 生产环境，开启js\css压缩
    if (process.env.NODE_ENV !== 'development') {
      config.plugin('compressionPlugin').use(new CompressionWebpackPlugin({
        test: /\.(js|css|less|map)$/, // 匹配文件名
        threshold: 1024, // 对超过10k的数据压缩
        minRatio: 0.8,
      }))
    }
    config.plugin('provide').use(webpack.ProvidePlugin, [{
      'window.Quill': 'quill'
    }])
    config.module
      .rule('svg')
      .exclude.add(resolve('src/assets/icons'))
      .end()
    config.module
      .rule('icons')
      .test(/\.svg$/)
      .include.add(resolve('src/assets/icons'))
      .end()
      .use('svg-sprite-loader')
      .loader('svg-sprite-loader')
      .options({
        symbolId: 'icon-[name]'
      })
      .end()

    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',
              minSize: 1005000,
              maxSize: 3005000,
              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'),
            config.optimization.providedExports = true,
            config.optimization.usedExports = true,
            config.optimization.innerGraph = true,
            config.optimization.sideEffects = true,
          {
            from: path.resolve(__dirname, './public/robots.txt'), //防爬虫文件
            to: './' //到根目录下
          }
        }
      )
  }
})