import { defineConfig, loadEnv } from 'vite';
import { createSvgIconsPlugin } from 'vite-plugin-svg-icons';
import vue from '@vitejs/plugin-vue';
import Components from 'unplugin-vue-components/vite';
import { VantResolver } from 'unplugin-vue-components/resolvers';
import { viteVConsole } from 'vite-plugin-vconsole';
import path from 'path';
import viteCompression from 'vite-plugin-compression';

const resolve = (dir) => path.resolve(__dirname, dir);
const timeStamp = new Date().getTime();
export default ({ command, mode }) => {
  // 获取环境变量
  const env: Partial<ImportMetaEnv> = loadEnv(mode, process.cwd());
  // https://vitejs.dev/config/
  return defineConfig({
    publicDir: resolve('public'), //静态资源服务的文件夹
    define: {
      'process.env': env,
    },
    plugins: [
      vue(),
      Components({
        resolvers: [VantResolver()],
      }),
      // gzip压缩 生产环境生成 .gz 文件
      viteCompression({
        verbose: true,
        disable: false,
        threshold: 10240,
        algorithm: 'gzip',
        ext: '.gz',
      }),
      createSvgIconsPlugin({
        // 指定需要缓存的图标文件夹
        iconDirs: [path.resolve(process.cwd(), 'src/assets/icons')],
        // 指定symbolId格式
        symbolId: 'icon-[dir]-[name]',

        /**
         * 自定义插入位置
         * @default: body-last
         */
        // inject?: 'body-last' | 'body-first'

        /**
         * custom dom id
         * @default: __svg__icons__dom__
         */
        // customDomId: '__svg__icons__dom__',
      }),
      viteVConsole({
        entry: resolve('src/main.ts'),
        localEnabled: env.VITE_BUILD_VCONSOLE === 'true',
        enabled: env.VITE_BUILD_VCONSOLE === 'true',
        config: {
          maxLogNumber: 1000,
          theme: 'light',
        },
      }),
    ], // 配置别名
    resolve: {
      alias: {
        '@': resolve('src'),
        web3: 'web3/dist/web3.min.js',
      }, // 导入时想要省略的扩展名列表
      extensions: ['.mjs', '.js', '.ts', '.jsx', '.tsx', '.json', '.vue'],
    },
    css: {
      // css预处理器
      preprocessorOptions: {
        scss: {
          additionalData: '@import "@/assets/styles/main.scss";',
        },
      },
    }, //启动服务配置
    server: {
      host: '0.0.0.0',
      port: 8001,
      open: true, // 自动在浏览器打开
      proxy: {},
    }, // 打包配置
    build: {
      //浏览器兼容性  "esnext"|"modules"
      target: 'modules', //指定输出路径
      outDir: 'dist', //生成静态资源的存放路径
      assetsDir: 'assets', //启用/禁用 CSS 代码拆分
      cssCodeSplit: true,
      sourcemap: env.VITE_BUILD_SOURCEMAP === 'true',
      assetsInlineLimit: 10240,
      chunkSizeWarningLimit: 1500, // chunk 大小警告的限制（以 kbs 为单位）
      minify: 'terser',
      terserOptions: {
        compress: {
          keep_infinity: true, // 防止 Infinity 被压缩成 1/0，这可能会导致 Chrome 上的性能问题
          drop_console: env.VITE_BUILD_DROP_CONSOLE === 'true',
          drop_debugger: true,
        },
      },
      rollupOptions: {
        input: {
          main: resolve('index.html'),
        },
        output: {
          entryFileNames: `js/[name]-[hash].${timeStamp}.js`,
          chunkFileNames: `js/[name]-[hash].${timeStamp}.js`,
          assetFileNames: `[ext]/[name]-[hash].${timeStamp}.[ext]`,
        },
      },
    },
  });
};