import { NavLink } from "react-router-dom";
import { useAuth } from "../../auth/AuthContext";
import { hasAnyPermission } from "../../auth/permissions";
import { cn } from "../../lib/utils";

export type NavItem = {
  to: string;
  label: string;
  anyOf?: string[];
};

export const NAV_ITEMS: NavItem[] = [
  { to: "/dashboard", label: "仪表盘" },
  {
    to: "/reimbursements",
    label: "我的报销",
    anyOf: ["expense.view_own", "expense.view_all"],
  },
  {
    to: "/workflow/tasks",
    label: "待我处理",
    anyOf: ["expense.approve"],
  },
  {
    to: "/invoice-pool",
    label: "票据中心",
    anyOf: ["invoice.upload", "invoice.view_own", "invoice.manage"],
  },
  {
    to: "/audit-logs",
    label: "审计工作台",
    anyOf: ["system.audit.view"],
  },
  {
    to: "/delegations",
    label: "委派管理",
    anyOf: ["expense.proxy_manage"],
  },
  {
    to: "/system/users",
    label: "用户管理",
    anyOf: ["system.users"],
  },
  { to: "/settings/profile", label: "个人设置" },
];

export function NavLinks({ onNavigate }: { onNavigate?: () => void }) {
  const { permissions } = useAuth();

  const visibleItems = NAV_ITEMS.filter((item) => {
    if (!item.anyOf) {
      return true;
    }

    return hasAnyPermission(permissions, item.anyOf);
  });

  return (
    <nav className="space-y-1">
      {visibleItems.map((item) => (
        <NavLink
          key={item.to}
          to={item.to}
          onClick={() => onNavigate?.()}
          className={({ isActive }) =>
            cn(
              "block rounded-lg px-3 py-2.5 text-sm font-medium transition-colors",
              isActive
                ? "bg-primary-50 text-primary"
                : "text-slate-700 hover:bg-slate-50 hover:text-slate-900",
            )
          }
        >
          {item.label}
        </NavLink>
      ))}
    </nav>
  );
}