import type { UserConfig, ConfigEnv } from 'vite';

import { loadEnv } from 'vite';
import { resolve } from 'path';

import { generateModifyVars } from './build/generate/generateModifyVars';
import { createProxy } from './build/vite/proxy';
import { wrapperEnv } from './build/utils';
import { createVitePlugins } from './build/vite/plugin';
import { OUTPUT_DIR } from './build/constant';
import postcssPluginPx2rem from 'postcss-plugin-px2rem'; //引入插件
import pkg from './package.json';
import moment from 'moment';

import autoprefixer from 'autoprefixer';
import postCssPxToRem from 'postcss-pxtorem';

function pathResolve(dir: string) {
  return resolve(process.cwd(), '.', dir);
}

const { dependencies, devDependencies, name, version } = pkg;
const __APP_INFO__ = {
  pkg: { dependencies, devDependencies, name, version },
  lastBuildTime: moment().format('YYYY-MM-DD HH:mm:ss'),
};
//配置参数
const px2remOptions = {
  rootValue: 54,
  // rootValue: 192, //换算基数， 默认100 ,也就是1440px ，这样的话把根标签的字体规定为1rem为50px,这样就可以从设计稿上量出多少个px直接在代码中写多少px了
  unitPrecision: 5, //允许REM单位增长到的十进制数字，其实就是精度控制
  // propWhiteList: [], // 默认值是一个空数组，这意味着禁用白名单并启用所有属性。
  propBlackList: ['headerLeft'], // 黑名单
  // exclude:false,  //默认false，可以（reg）利用正则表达式排除某些文件夹的方法，例如/(node_module)/ 。如果想把前端UI框架内的px也转换成rem，请把此属性设为默认值
  // selectorBlackList: [], //要忽略并保留为px的选择器
  // ignoreIdentifier: false, //（boolean/string）忽略单个属性的方法，启用ignoreidentifier后，replace将自动设置为true。
  // replace: true, // （布尔值）替换包含REM的规则，而不是添加回退。
  mediaQuery: false, //（布尔值）允许在媒体查询中转换px
  minPixelValue: 0, //设置要替换的最小像素值(3px会被转rem)。 默认 0
};
export default ({ command, mode }: ConfigEnv): UserConfig => {
  const root = process.cwd();

  const env = loadEnv(mode, root);

  // The boolean type read by loadEnv is a string. This function can be converted to boolean type
  const viteEnv = wrapperEnv(env);

  const { VITE_PORT, VITE_GLOB_PUBLIC_PATH, VITE_PROXY, VITE_GLOB_DROP_CONSOLE } = viteEnv;

  const isBuild = command === 'build';

  return {
    base: VITE_GLOB_PUBLIC_PATH,
    root,
    resolve: {
      alias: [
        {
          find: 'vue-i18n',
          replacement: 'vue-i18n/dist/vue-i18n.cjs.js',
        },
        // /@/xxxx => src/xxxx
        {
          find: /\/@\//,
          replacement: pathResolve('src') + '/',
        },
        // /#/xxxx => types/xxxx
        {
          find: /\/#\//,
          replacement: pathResolve('types') + '/',
        },
        // ['@vue/compiler-sfc', '@vue/compiler-sfc/dist/compiler-sfc.esm-browser.js'],
      ],
    },
    // css: {
    //   preprocessorOptions: {

    //   },
    // },
    server: {
      // Listening on all local IPs
      host: true,
      port: VITE_PORT,
      // Load proxy configuration from .env
      proxy: createProxy(VITE_PROXY),
    },
    build: {
      target: 'es2020',
      outDir: OUTPUT_DIR,
      // minify: 'terser', // The minify mode is set to use terser to remove console
      terserOptions: {
        compress: {
          keep_infinity: true,
          // Used to delete console in production environment
          drop_console: VITE_GLOB_DROP_CONSOLE,
        },
      },
      // Turning off brotliSize display can slightly reduce packaging time
      brotliSize: false,
      chunkSizeWarningLimit: 2000,
    },
    define: {
      // setting vue-i18-next
      // Suppress warning
      __INTLIFY_PROD_DEVTOOLS__: false,
      __APP_INFO__: JSON.stringify(__APP_INFO__),
    },
    css: {
      preprocessorOptions: {
        sass: {
          additionalData: '@import "~@/styles/variables.scss";', // 导入Sass变量
        },
        less: {
          modifyVars: generateModifyVars(),
          javascriptEnabled: true,
        },
      },
      postcss: {
        // plugins: [
        //   autoprefixer({
        //     overrideBrowserslist: ['Android 4.1', 'iOS 7.1', 'Chrome > 31', 'ff > 31', 'ie >= 8'],
        //   }),
        //   postCssPxToRem({
        //     // 自适应，px>rem转换
        //     rootValue: 108, // 75表示750设计稿，37.5表示375设计稿
        //     remUnit: 192,///设计图宽度/10
        //     propList: ['*'], // 需要转换的属性，这里选择全部都进行转换
        //     selectorBlackList: ['norem'], // 过滤掉norem-开头的class，不进行rem转换
        //   }),
        // ],
        plugins: [postcssPluginPx2rem(px2remOptions)],
      },
      
    },

    // The vite plugin used by the project. The quantity is large, so it is separately extracted and managed
    plugins: createVitePlugins(viteEnv, isBuild),

    optimizeDeps: {
      // @iconify/iconify: The dependency is dynamically and virtually loaded by @purge-icons/generated, so it needs to be specified explicitly
      include: [
        '@iconify/iconify',
        'ant-design-vue/es/locale/zh_CN',
        'moment/dist/locale/zh-cn',
        'ant-design-vue/es/locale/en_US',
        'moment/dist/locale/eu',
      ],
      exclude: ['vue-demi', 'consolidate'],
    },
  }
}