import {
  Bot,
  CalendarClock,
  Download,
  FileStack,
  FolderTree,
  Gauge,
  Globe,
  House,
  Library,
  ListChecks,
  ListTodo,
  type LucideIcon,
  Rss,
  ScrollText,
  Settings,
} from "lucide-react";

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

/** 控制台路由前缀 */
export const CONSOLE_BASE = "/console";

/** 拼控制台路径:consolePath("library", id) → /console/library/<id> */
export function consolePath(...segments: (string | number)[]): string {
  const rest = segments.map((s) => encodeURIComponent(String(s))).join("/");
  return rest ? `${CONSOLE_BASE}/${rest}` : CONSOLE_BASE;
}

/**
 * 侧栏 5 组 14 项(IA-3 定稿清单;定稿文字写"共 12 项",以逐项清单为准,docs/plan/00-first-version-plan.md §8):概览 → 资源 → 订阅 → 整理 → 系统。
 * 待处理不进侧栏,由顶栏收件箱打开;移动端抽屉用同一份表。
 */
export const NAV_GROUPS: NavGroup[] = [
  {
    title: "概览",
    items: [
      {
        to: "/console",
        label: "首页",
        icon: House,
        description: "正在进行、需要处理、计划、最近结果与运行状态",
      },
      {
        to: "/console/tasks",
        label: "任务",
        icon: ListTodo,
        description: "每次运行都是一条任务：定时、事件、手动、Agent 触发都在这里，含定时任务计划",
      },
      {
        to: "/console/agent",
        label: "Agent 会话",
        icon: Bot,
        description: "交代目标，Agent 在授权内执行并汇报",
      },
    ],
  },
  {
    title: "资源",
    items: [
      {
        to: "/console/sites",
        label: "站点",
        icon: Globe,
        description: "站点、凭证、账号数据与健康；资源、快照与 Feed",
      },
      { to: "/console/sources", label: "RSS 订阅", icon: Rss, description: "全部 Feed 与抓取状态" },
    ],
  },
  {
    title: "订阅",
    items: [
      { to: "/console/subscriptions", label: "订阅", icon: CalendarClock, description: "单次收录与持续追踪" },
      { to: "/console/rules", label: "规则", icon: ListChecks, description: "收录策略与偏好标签" },
    ],
  },
  {
    title: "整理",
    items: [
      { to: "/console/downloads", label: "下载面板", icon: Download, description: "下载任务、下载计划与缓存水位" },
      {
        to: "/console/organize",
        label: "整理记录",
        icon: FileStack,
        description: "每次整理的前后路径与逐文件结果",
      },
      {
        to: "/console/files",
        label: "文件管理",
        icon: FolderTree,
        description: "浏览登记目录，改名、移动、删除与整理",
      },
      {
        to: "/console/library",
        label: "媒体概览",
        icon: Library,
        description: "作品、季 / 集、版本目标、外部身份与待识别资源",
      },
    ],
  },
  {
    title: "系统",
    items: [
      {
        to: "/console/settings",
        label: "设置",
        icon: Settings,
        description: "下载器、媒体服务器、库根、站点账号、Agent 上游与自动化",
      },
      {
        to: "/console/audit",
        label: "审计",
        icon: ScrollText,
        description: "登录、设置、密钥、任务操作的留痕",
      },
      {
        to: "/console/status",
        label: "运行状态",
        icon: Gauge,
        description: "进程心跳、事件循环、数据库、磁盘与挂载根",
      },
    ],
  },
];

/** 不在侧栏但有页面的路由:顶栏标题用 */
const EXTRA_TITLES: Record<string, string> = {
  "/console/inbox": "待处理",
  "/console/preferences": "偏好标签",
  "/console/search": "搜索",
};

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

/** 设置页深链(IA-2):`/console/settings#分区[/节]`。调用方只认新分区名 */
export type SettingsSection =
  | "automation"
  | "sites"
  | "downloaders"
  | "library"
  | "media-servers"
  | "metadata"
  | "agent"
  | "api-keys"
  | "account";
export function settingsPath(section: SettingsSection, anchor?: string): string {
  return `${CONSOLE_BASE}/settings#${section}${anchor ? `/${anchor}` : ""}`;
}

/** 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.replace(/\/+$/, "")) ??
    NAV_ITEMS.filter((i) => i.to !== CONSOLE_BASE && pathname.startsWith(`${i.to}/`)).sort(
      (a, b) => b.to.length - a.to.length,
    )[0]
  );
}

/** 顶栏标题:导航项名,或不在侧栏的页面名 */
export function pageTitle(pathname: string): string | undefined {
  const path = pathname.replace(/\/+$/, "");
  return findNavItem(pathname)?.label ?? EXTRA_TITLES[path];
}