import type { RouteRecordRaw } from "vue-router";
import NProgress from "@/utils/nprogress";
import router from "@/router";
import { usePermissionStore, useUserStore } from "@/store";
import { useTenantStoreHook } from "@/store/modules/tenant-store";

export function setupPermission() {
  const whiteList = ["/login"];

  router.beforeEach(async (to, from, next) => {
    NProgress.start();

    try {
      const isLoggedIn = useUserStore().isLoggedIn();

      // 未登录处理
      if (!isLoggedIn) {
        if (whiteList.includes(to.path)) {
          next();
        } else {
          next(`/login?redirect=${encodeURIComponent(to.fullPath)}`);
          NProgress.done();
        }
        return;
      }

      // 已登录登录页重定向
      if (to.path === "/login") {
        next({ path: "/" });
        return;
      }

      const permissionStore = usePermissionStore();
      const userStore = useUserStore();

      // 动态路由生成
      if (!permissionStore.isRouteGenerated) {
        if (!userStore.userInfo?.roles?.length) {
          await userStore.getUserInfo();
        }

        // 登录成功后，尝试获取租户列表和当前租户信息（如果启用多租户）
        // 最小侵入：如果接口失败，不影响正常流程（可能是单租户模式）
        const tenantStore = useTenantStoreHook();
        // 由 tenantStore 内部自行判断前端多租户开关（VITE_APP_TENANT_ENABLED）
        await tenantStore.prepareTenantContextAfterLogin();

        const dynamicRoutes = await permissionStore.generateRoutes();
        dynamicRoutes.forEach((route: RouteRecordRaw) => {
          router.addRoute(route);
        });

        next({ ...to, replace: true });
        return;
      }

      // 路由404检查
      if (to.matched.length === 0) {
        next("/404");
        return;
      }

      // 动态标题设置
      const title = (to.params.title as string) || (to.query.title as string);
      if (title) {
        to.meta.title = title;
      }

      next();
    } catch (error) {
      // 错误处理：重置状态并跳转登录
      console.error("Route guard error:", error);
      await useUserStore().resetAllState();
      next("/login");
      NProgress.done();
    }
  });

  router.afterEach(() => {
    NProgress.done();
  });
}