import router from '@/router';
import { RouteRecordRaw } from 'vue-router';
import { useUserStoreHook } from '@/store/modules/user';
import { usePermissionStoreHook } from '@/store/modules/permission';
import NProgress from 'nprogress';
import 'nprogress/nprogress.css';
NProgress.configure({ showSpinner: false });

const permissionStore = usePermissionStoreHook();

// 白名单路由
const whiteList = ['/login', '/register']; //login

// ✅ 新增：递归标准化路由路径，确保所有 path 以 '/' 开头
function normalizeRoutes(routes: any[]): any[] {
  return routes.map(route => {
    // 创建副本以避免直接修改原始数据（可选，视具体需求而定）
    const normalizedRoute = { ...route };

    // 修正当前路由的 path
    if (normalizedRoute.path && !normalizedRoute.path.startsWith('/')) {
      normalizedRoute.path = `/${normalizedRoute.path}`;
    }

    // 递归修正子路由
    if (normalizedRoute.children && normalizedRoute.children.length > 0) {
      normalizedRoute.children = normalizeRoutes(normalizedRoute.children);
    }

    return normalizedRoute;
  });
}

// 查找第一个可用路由
function findFirstAvailableRoute(routes: any[]): string | undefined {
  for (const route of routes) {
    if (route.meta?.hidden) continue;

    if (route.children?.length > 0) {
      const child = route.children[0];
      // 优先使用 opturl 或 path
      const targetPath = child.opturl || child.path;
      return targetPath?.startsWith('/') ? targetPath : `/${targetPath}`;
    }

    const targetPath = route.opturl || route.path;
    return targetPath;
  }
  return '/404';
}

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

  if (userStore.Token) {
    // 登录成功，跳转到首页
    if (to.path === '/login') {
      //login
      next({ path: '/' });
      NProgress.done();
      return;
    } else {
      const hasGetUserInfo = userStore.roles.length > 0;
      if (hasGetUserInfo) {
        // 已获取用户信息，检查路由匹配
        if (to.matched.length === 0) {
          // 路由未匹配，可能是访问根路径
          if (to.path === '/') {
            const firstRoute = findFirstAvailableRoute(permissionStore.routes);
            if (firstRoute) {
              next(firstRoute);
              NProgress.done();
              return;
            }
          }
          from.name ? next({ name: from.name as any }) : next('/401');
        } else {
          next();
        }
      } else {
        try {
          const { roles } = await userStore.getInfo();
          let accessRoutes: RouteRecordRaw[] =
            await permissionStore.generateRoutes(roles);

          // ✅ 关键修复：在添加路由前，标准化所有路径
          accessRoutes = normalizeRoutes(accessRoutes);

          accessRoutes.forEach((route: any) => {
            router.addRoute(route);
          });

          // 关键：如果是根路径，加载完路由后跳转到第一个可用路由
          if (to.path === '/') {
            const firstRoute = findFirstAvailableRoute(accessRoutes);
            if (firstRoute) {
              next(firstRoute);
              NProgress.done();
              return;
            }
          }

          next({ ...to, replace: true });
        } catch (error) {
          console.log(error);
          await userStore.resetToken();
          next(`/login`);
          NProgress.done();
        }
      }
    }
  } else {
    // 未登录可以访问白名单页面
    if (whiteList.indexOf(to.path) !== -1) {
      next();
    } else {
      next(`/login`);
      NProgress.done();
    }
  }
});

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