import {
  Bot,
  CalendarClock,
  Download,
  FileStack,
  Fingerprint,
  Globe,
  House,
  Inbox,
  Library,
  type LucideIcon,
  Rss,
  Settings,
  Tags,
} from "lucide-react";

export type NavItem = { to: string; label: string; icon: LucideIcon; description: string };
export type NavGroup = { title: string; items: NavItem[] };

/** 控制台 12 个工作区(任务书 §3.1 第 10 条 / REQ §13.1) */
export const NAV_GROUPS: NavGroup[] = [
  {
    title: "概览",
    items: [
      {
        to: "/",
        label: "首页",
        icon: House,
        description: "自动化概览、当前工作、需要我处理、缓存与保留、来源健康、最近产出",
      },
      { to: "/inbox", label: "待处理中心", icon: Inbox, description: "按作品与根因合并的待决定事项，Agent 已先行调查" },
    ],
  },
  {
    title: "媒体",
    items: [
      { to: "/library", label: "媒体库", icon: Library, description: "作品、内容单元、版本目标与实际路径" },
      { to: "/identity", label: "身份与元数据", icon: Fingerprint, description: "外部身份映射、待识别池与元数据来源" },
      { to: "/organize", label: "整理记录", icon: FileStack, description: "Copy/Move 入库前后路径与逐文件结果" },
    ],
  },
  {
    title: "获取",
    items: [
      {
        to: "/subscriptions",
        label: "订阅与收录规则",
        icon: CalendarClock,
        description: "单次收录与持续追踪，版本目标与预算",
      },
      {
        to: "/preferences",
        label: "偏好标签",
        icon: Tags,
        description: "软偏好与硬规则，手动取消的偏好不会被自动加回",
      },
      { to: "/sites", label: "PT 站点工作台", icon: Globe, description: "统一格式浏览、搜索站点资源并关联本地库存" },
      { to: "/sources", label: "来源 / Feed / 快照", icon: Rss, description: "RSS 与站点快照的抓取状态、新鲜度与健康" },
      { to: "/tasks", label: "下载与任务", icon: Download, description: "下载、整理、核验的业务时间线与子任务" },
    ],
  },
  {
    title: "助手与系统",
    items: [
      { to: "/agent", label: "Agent 会话", icon: Bot, description: "用自然语言交代目标，Agent 在授权内执行并汇报" },
      {
        to: "/settings",
        label: "系统设置",
        icon: Settings,
        description: "下载器与媒体服务器实例、路径映射、API Key、Pi 上游与自动化开关",
      },
    ],
  },
];

export const NAV_ITEMS = NAV_GROUPS.flatMap((g) => g.items);

/** 按路径找当前导航项(最长前缀匹配) */
export function findNavItem(pathname: string): NavItem | undefined {
  return (
    NAV_ITEMS.find((i) => i.to === pathname) ??
    NAV_ITEMS.filter((i) => i.to !== "/" && pathname.startsWith(`${i.to}/`)).sort(
      (a, b) => b.to.length - a.to.length,
    )[0]
  );
}