import type { Router, RouteRecordRaw } from 'vue-router';
import { usePermissionStoreWithOut } from '@jeesite/core/store/modules/permission';
import { RootRoute } from '@jeesite/core/router/routes';
import { PageEnum } from '@jeesite/core/enums/pageEnum';
import { PAGE_NOT_FOUND_ROUTE } from '@jeesite/core/router/routes/basic';

const ROOT_PATH = RootRoute.path;
const HOME_PATH = PageEnum.BASE_HOME;

function ensurePageNotFoundRoute(router: Router) {
  if (!router.hasRoute(PAGE_NOT_FOUND_ROUTE.name as string)) {
    router.addRoute(PAGE_NOT_FOUND_ROUTE as unknown as RouteRecordRaw);
  }
}

export function createPermissionGuard(router: Router) {
  const permissionStore = usePermissionStoreWithOut();
  router.beforeEach(async (to, from, next) => {
    // 授权页面在 basicRoutes 中始终存在，不需要权限检查
    if (to.path === PageEnum.BASE_AUTHORIZATION) {
      next();
      return;
    }

    // 如果路由已经动态添加过，直接放行
    if (permissionStore.getIsDynamicAddedRoute) {
      if (to.name === PAGE_NOT_FOUND_ROUTE.name) {
        next({ path: PageEnum.BASE_HOME, replace: true });
        return;
      }
      next();
      return;
    }

    if (from.path === ROOT_PATH && to.path === HOME_PATH) {
      // 首次导航，需要生成路由和菜单数据
      const routes = await permissionStore.buildRoutesAction();

      routes.forEach((route) => {
        router.addRoute(route as unknown as RouteRecordRaw);
      });

      ensurePageNotFoundRoute(router);

      permissionStore.setDynamicAddedRoute(true);

      // 已经是目标路径，直接放行
      next();
      return;
    }

    const routes = await permissionStore.buildRoutesAction();

    routes.forEach((route) => {
      router.addRoute(route as unknown as RouteRecordRaw);
    });

    ensurePageNotFoundRoute(router);

    permissionStore.setDynamicAddedRoute(true);

    if (to.name === PAGE_NOT_FOUND_ROUTE.name) {
      // 动态添加路由后，此处应当重定向到fullPath，否则会加载404页面内容
      next({ path: to.fullPath, replace: true, query: to.query });
    } else {
      const redirectPath = (from.query.redirect || to.path) as string;
      const redirect = decodeURIComponent(redirectPath);
      const nextData = to.path === redirect ? { ...to, replace: true } : { path: redirect };
      next(nextData);
    }
  });
}