import type { MenuProps } from 'antd';
import type { AppRouteItem } from '@/router/routeConfig';

type MenuItem = Required<MenuProps>['items'][number];

/** 根据权限过滤路由树，并转换成 antd Menu 需要的结构。 */
export function buildMenuItems(
  routes: AppRouteItem[],
  hasPermission: (permission?: string) => boolean,
): MenuItem[] {
  const items: MenuItem[] = [];

  for (const route of routes) {
    if (route.hideInMenu) continue;
    if (route.permission && !hasPermission(route.permission)) continue;

    const children = route.children
      ? buildMenuItems(route.children, hasPermission)
      : [];

    // 分组节点下没有任何可访问页面时，整个分组也一并隐藏
    if (route.children?.length && children.length === 0) continue;

    items.push({
      key: route.path,
      icon: route.icon,
      label: route.title,
      ...(children.length > 0 ? { children } : {}),
    } as MenuItem);
  }

  return items;
}

/** 根据当前地址推导需要展开的父级菜单 key。 */
export function getOpenKeys(pathname: string): string[] {
  const segments = pathname.split('/').filter(Boolean);
  return segments.slice(0, -1).map((_, index) => `/${segments.slice(0, index + 1).join('/')}`);
}