import {
  Bot,
  CalendarClock,
  Compass,
  Download,
  FileStack,
  FolderTree,
  Gauge,
  Globe,
  House,
  Library,
  ListChecks,
  type LucideIcon,
  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;
}

/**
 * 「获取」组的组名(IA-2):站点、订阅、规则合成一组。用户原话"都算做规则",组名可能再改,只改这一处。
 */
export const ACQUIRE_GROUP_TITLE = "获取";

/**
 * 侧栏 4 组 13 项(IA-2,docs/design/console-ia.md):概览 → 获取 → 整理 → 系统。
 * RSS 属于站点(站点详情的 RSS Tab),不再单独占一项。
 * 没有「待处理」(2026-10-06 取消):问题在发生处处理,铃铛只放等你批准的智能体操作与系统健康;移动端抽屉用同一份表。
 * 系统组只有三项(界面第二轮):日志(任务、定时与自动、登录、审计合一,定时任务设置是其中一个页签)、运行状态、设置。
 */
export const NAV_GROUPS: NavGroup[] = [
  {
    title: "概览",
    items: [
      {
        to: "/console",
        label: "首页",
        icon: House,
        description: "进行中的任务、等你批准的操作、最近的整理",
      },
      {
        to: "/console/agent",
        label: "智能体会话",
        icon: Bot,
        description: "给智能体一个目标，看它做了什么",
      },
    ],
  },
  {
    title: ACQUIRE_GROUP_TITLE,
    items: [
      {
        to: "/console/sites",
        label: "站点",
        icon: Globe,
        description: "PT 站、公开 BT 站和自定义 RSS 源",
      },
      { to: "/console/discover", label: "发现", icon: Compass, description: "bgm.tv 每日放送与豆瓣热门" },
      { 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: "收录策略与规则组" },
    ],
  },
  {
    title: "整理",
    items: [
      { to: "/console/downloads", label: "下载面板", icon: Download, description: "进行中与已完成的下载、下载盘" },
      {
        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: "浏览下载目录和媒体库，改名、移动、删除与整理",
      },
      {
        to: "/console/library",
        label: "媒体库",
        icon: Library,
        description: "作品、季与集、未识别资源",
      },
    ],
  },
  {
    title: "系统",
    items: [
      {
        to: "/console/logs",
        label: "日志",
        icon: ScrollText,
        description: "任务、定时任务、登录与操作记录，可实时查看",
      },
      {
        to: "/console/status",
        label: "运行状态",
        icon: Gauge,
        description: "服务是否正常、CPU 与内存、磁盘与数据库",
      },
      {
        to: "/console/settings",
        label: "设置",
        icon: Settings,
        description: "下载器、媒体服务器、媒体库目录、站点账号、模型服务与自动化",
      },
    ],
  },
];

/** 并进别的导航项的旧页面:按前缀归到对应项(任务详情独立页属于日志) */
const NAV_ALIASES: Record<string, string> = {
  "/console/tasks": "/console/logs",
};

/** 不在侧栏但有页面的路由:顶栏标题用 */
const EXTRA_TITLES: Record<string, string> = {
  "/console/preferences": "规则",
  "/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 =
  | "downloaders"
  | "media-servers"
  | "sites"
  | "metadata"
  | "acquire"
  | "library"
  | "organize"
  | "agent"
  | "system"
  | "cache"
  | "account"
  | "interface";
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 {
  const alias = Object.entries(NAV_ALIASES).find(([from]) => pathname === from || pathname.startsWith(`${from}/`));
  if (alias) return NAV_ITEMS.find((i) => i.to === alias[1]);
  return (
    NAV_ITEMS.find((i) => i.to === pathname.replace(/\/+$/, "")) ??
    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] ??
    (path.startsWith("/console/media/tmdb/") ? "作品详情" : undefined)
  );
}