import vue from "@vitejs/plugin-vue";
import { UserConfig, ConfigEnv, loadEnv, defineConfig } from "vite";

import AutoImport from "unplugin-auto-import/vite";
import Components from "unplugin-vue-components/vite";
import { ElementPlusResolver } from "unplugin-vue-components/resolvers";

import Icons from "unplugin-icons/vite";
import IconsResolver from "unplugin-icons/resolver";

import { createSvgIconsPlugin } from "vite-plugin-svg-icons";

import { viteMockServe } from "vite-plugin-mock";
import vueJsx from "@vitejs/plugin-vue-jsx";

import UnoCSS from "unocss/vite";
import { resolve } from "path";

const pathSrc = resolve(__dirname, "src");
//  https://cn.vitejs.dev/config
export default defineConfig(({ mode }: ConfigEnv): UserConfig => {
	/* 
	 Vite 默认是不加载 .env 文件的, 可以使用 Vite 导出的 loadEnv 函数来加载指定的 .env 文件
	 */
  const env = loadEnv(mode, process.cwd());
  return {
    resolve: {
      alias: {
        "@": pathSrc,
      },
    },
    css: {
      // CSS 预处理器
      preprocessorOptions: {
        // 定义全局 SCSS 变量
        scss: {
          javascriptEnabled: true,
          additionalData: `
            @use "@/styles/variables.scss" as *;
          `,
        },
      },
    },
    server: {
      // 允许IP访问
      host: "0.0.0.0",
      // 应用端口 (默认:3000)
      port: Number(env.VITE_APP_PORT),
      // 运行是否自动打开浏览器
      open: true,
      proxy: {
        /**
         * 反向代理解决跨域配置
         * http://localhost:3000/dev-api/users (F12可见请求路径) => http://localhost:8989/users (实际请求后端 API 路径)
         *
         * env.VITE_APP_BASE_API: /dev-api
         * env.VITE_APP_API_URL: http://localhost:8989
         */
        [env.VITE_APP_BASE_API]: {
          changeOrigin: true,
          target: env.VITE_APP_API_URL,
          rewrite: (path) =>
            path.replace(new RegExp("^" + env.VITE_APP_BASE_API), ""),
        },
      },
    },
    plugins: [
      vue(),
      vueJsx(),
      UnoCSS({
        hmrTopLevelAwait: false,
      }),
      // 自动导入参考： https://github.com/sxzz/element-plus-best-practices/blob/main/vite.config.ts
      AutoImport({
        // 自动导入 Vue 相关函数，如：ref, reactive, toRef 等
        imports: ["vue", "@vueuse/core"],
        // 自动导入 Element Plus 相关函数，如：ElMessage, ElMessageBox... (带样式)
        resolvers: [ElementPlusResolver(), IconsResolver({})],
        eslintrc: {
          enabled: false,
          filepath: "./.eslintrc-auto-import.json",
          globalsPropValue: true,
        },
        vueTemplate: true,
        // 配置文件生成位置(false:关闭自动生成)
        dts: false,
        // dts: "types/auto-imports.d.ts",
      }),

      Components({
        resolvers: [
          // 自动导入 Element Plus 组件
          ElementPlusResolver(),
          // 自动注册图标组件
          IconsResolver({ enabledCollections: ["ep"] }),
        ],
        // 指定自定义组件位置(默认:src/components)
        dirs: ["src/components", "src/**/components"],
        // 配置文件位置 (false:关闭自动生成)
        dts: false,
        // dts: "types/components.d.ts",
      }),

      Icons({
        autoInstall: true,
      }),
      createSvgIconsPlugin({
        // 指定需要缓存的图标文件夹
        iconDirs: [resolve(pathSrc, "assets/icons")],
        // 指定symbolId格式
        symbolId: "icon-[dir]-[name]",
      }),
      viteMockServe({
        ignore: /^\_/,
        mockPath: "mock",
        enable: mode === "development",
      }),
    ],
    // 预加载项目必需的组件
    optimizeDeps: {
      include: [
        "vue",
        "vue-router",
        "pinia",
        "axios",
        "element-plus/es/components/form/style/css",
        "element-plus/es/components/form-item/style/css",
        "element-plus/es/components/button/style/css",
        "element-plus/es/components/input/style/css",
        "element-plus/es/components/input-number/style/css",
        "element-plus/es/components/switch/style/css",
        "element-plus/es/components/upload/style/css",
        "element-plus/es/components/menu/style/css",
        "element-plus/es/components/col/style/css",
        "element-plus/es/components/icon/style/css",
        "element-plus/es/components/row/style/css",
        "element-plus/es/components/tag/style/css",
        "element-plus/es/components/dialog/style/css",
        "element-plus/es/components/loading/style/css",
        "element-plus/es/components/radio/style/css",
        "element-plus/es/components/radio-group/style/css",
        "element-plus/es/components/popover/style/css",
        "element-plus/es/components/scrollbar/style/css",
        "element-plus/es/components/tooltip/style/css",
        "element-plus/es/components/dropdown/style/css",
        "element-plus/es/components/dropdown-menu/style/css",
        "element-plus/es/components/dropdown-item/style/css",
        "element-plus/es/components/sub-menu/style/css",
        "element-plus/es/components/menu-item/style/css",
        "element-plus/es/components/divider/style/css",
        "element-plus/es/components/card/style/css",
        "element-plus/es/components/link/style/css",
        "element-plus/es/components/breadcrumb/style/css",
        "element-plus/es/components/breadcrumb-item/style/css",
        "element-plus/es/components/table/style/css",
        "element-plus/es/components/tree-select/style/css",
        "element-plus/es/components/table-column/style/css",
        "element-plus/es/components/select/style/css",
        "element-plus/es/components/option/style/css",
        "element-plus/es/components/pagination/style/css",
        "element-plus/es/components/tree/style/css",
        "element-plus/es/components/alert/style/css",
        "element-plus/es/components/radio-button/style/css",
        "element-plus/es/components/checkbox-group/style/css",
        "element-plus/es/components/checkbox/style/css",
        "element-plus/es/components/tabs/style/css",
        "element-plus/es/components/tab-pane/style/css",
        "element-plus/es/components/rate/style/css",
        "element-plus/es/components/date-picker/style/css",
        "element-plus/es/components/notification/style/css",
        "element-plus/es/components/image/style/css",
        "element-plus/es/components/statistic/style/css",
        "element-plus/es/components/watermark/style/css",
        "@vueuse/core",
        "sortablejs",
        "path-to-regexp",
        "echarts",
        "@wangeditor/editor",
        "@wangeditor/editor-for-vue",
        "vue-i18n",
      ],
    },
    // 构建配置
    build: {
      chunkSizeWarningLimit: 2000, // 消除打包大小超过500kb警告
      minify: "terser", // Vite 2.6.x 以上需要配置 minify: "terser", terserOptions 才能生效
      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: true, // 生产环境去除 console
          drop_debugger: true, // 生产环境去除 debugger
        },
        format: {
          comments: false, // 删除注释
        },
      },
    },
  };
});