import { isValidWorkboardBoardId } from "@openclaw/workboard-contract";
// Control UI app navigation defines sidebar and settings presentation metadata.
import type { RouteId } from "./app-route-paths.ts";
import type { IconName } from "./components/icons.ts";
import { i18n, t } from "./i18n/index.ts";
import { normalizeLowercaseStringOrEmpty } from "./lib/string-coerce.ts";

export type NavigationRouteId = RouteId;

type NavigationItem = {
  [TRouteId in NavigationRouteId]: IconName;
};

// The sidebar shows a small user-customizable ordered zone; every other nav route
// lives in the collapsed "More" section. Chat is reachable through the session
// list and Settings/Docs live in the sidebar footer, so neither is listed here.
// Skills and Skill Workshop are tabs inside the Plugins hub, not sidebar items.
// Worktrees is a tab of the Sessions hub, so it is not listed either.
export const SIDEBAR_NAV_ROUTES = [
  "workboard",
  "dashboards",
  "usage",
  "cron",
  "tasks",
  "sessions",
  "activity",
  "plugins",
  "apps",
] as const satisfies readonly NavigationRouteId[];

// Routes presented as tabs of the Plugins hub. The sidebar highlights the
// Plugins entry for all of them, mirroring how config covers settings routes.
const PLUGINS_HUB_ROUTES: ReadonlySet<NavigationRouteId> = new Set([
  "plugins",
  "skills",
  "skill-workshop",
]);

export function isPluginsHubRoute(routeId: NavigationRouteId): boolean {
  return PLUGINS_HUB_ROUTES.has(routeId);
}

// Worktrees renders as a tab of the Sessions hub; the sidebar highlights the
// Sessions entry for both routes, mirroring the Plugins hub behavior.
const SESSIONS_HUB_ROUTES: ReadonlySet<NavigationRouteId> = new Set(["sessions", "worktrees"]);

export function isSessionsHubRoute(routeId: NavigationRouteId): boolean {
  return SESSIONS_HUB_ROUTES.has(routeId);
}

export type SidebarNavRoute = (typeof SIDEBAR_NAV_ROUTES)[number];

export type SidebarZoneEntry =
  | { type: "route"; route: SidebarNavRoute }
  | { type: "workboard"; boardId: string }
  | { type: "session"; key: string };

// Keep the highest-value operational destinations visible on first use. Users
// can still replace this route set through the customize menu.
export const DEFAULT_SIDEBAR_ENTRIES = ["cron", "plugins"].map((route) =>
  serializeSidebarEntry({ type: "route", route: route as SidebarNavRoute }),
);

/**
 * Parse the compact persisted representation used by browser and synced prefs.
 */
export function parseSidebarEntry(value: unknown): SidebarZoneEntry | null {
  if (typeof value !== "string") {
    return null;
  }
  if (value.startsWith("route:")) {
    const route = value.slice("route:".length);
    return SIDEBAR_NAV_ROUTES.includes(route as SidebarNavRoute)
      ? { type: "route", route: route as SidebarNavRoute }
      : null;
  }
  if (value.startsWith("session:")) {
    const key = value.slice("session:".length).trim();
    return key ? { type: "session", key } : null;
  }
  if (value.startsWith("workboard:")) {
    const boardId = value.slice("workboard:".length).trim();
    return isValidWorkboardBoardId(boardId) ? { type: "workboard", boardId } : null;
  }
  return null;
}

export function serializeSidebarEntry(entry: SidebarZoneEntry): string {
  if (entry.type === "route") {
    return `route:${entry.route}`;
  }
  return entry.type === "workboard" ? `workboard:${entry.boardId}` : `session:${entry.key}`;
}

/**
 * Normalize a persisted sidebar-zone list. Returns null when the value is not a
 * list; malformed and duplicate entries are dropped.
 */
export function normalizeSidebarEntries(value: unknown): string[] | null {
  if (!Array.isArray(value)) {
    return null;
  }
  const normalized: string[] = [];
  for (const valueEntry of value) {
    const parsed = parseSidebarEntry(valueEntry);
    if (!parsed) {
      continue;
    }
    const entry = serializeSidebarEntry(parsed);
    if (!normalized.includes(entry)) {
      normalized.push(entry);
    }
  }
  return normalized;
}

export function sidebarMoreRoutes(entries: readonly string[]): SidebarNavRoute[] {
  const visibleRoutes = new Set(
    entries.flatMap((entry) => {
      const parsed = parseSidebarEntry(entry);
      return parsed?.type === "route" ? [parsed.route] : [];
    }),
  );
  return SIDEBAR_NAV_ROUTES.filter((routeId) => !visibleRoutes.has(routeId));
}

type SettingsNavigationGroup = {
  /** i18n key for the group heading; null renders the group without a label. */
  labelKey: string | null;
  routes: readonly NavigationRouteId[];
};

export type SettingsSearchBlock = {
  routeId: RouteId;
  label: string;
  pathname?: string;
  search?: string;
  hash: string;
};

let settingsSearchSegmenterLocale = "";
let settingsSearchSegmenter: Intl.Segmenter | null = null;

function settingsSearchHasWordPrefix(value: string, query: string): boolean {
  const locale = i18n.getLocale();
  if (settingsSearchSegmenterLocale !== locale) {
    settingsSearchSegmenterLocale = locale;
    settingsSearchSegmenter =
      typeof Intl !== "undefined" && "Segmenter" in Intl
        ? new Intl.Segmenter(locale, { granularity: "word" })
        : null;
  }
  if (!settingsSearchSegmenter) {
    return value.split(/[^\p{L}\p{N}]+/u).some((word) => word.startsWith(query));
  }
  for (const segment of settingsSearchSegmenter.segment(value)) {
    if (segment.isWordLike !== false && segment.segment.startsWith(query)) {
      return true;
    }
  }
  return false;
}

export function settingsSearchTextMatches(value: string, query: string): boolean {
  const candidate = normalizeLowercaseStringOrEmpty(value).normalize("NFC");
  const normalizedQuery = normalizeLowercaseStringOrEmpty(query).normalize("NFC");
  if (!normalizedQuery) {
    return false;
  }
  if (normalizedQuery.length > 2) {
    return candidate.includes(normalizedQuery);
  }
  return settingsSearchHasWordPrefix(candidate, normalizedQuery);
}

// Grouping feeds the full-page settings sidebar (settings-sidebar.ts). Ordered
// by user attention: personal/look-and-feel first, system plumbing last.
// Management surfaces (sessions, worktrees, activity, memory import) are
// workspace destinations, not settings; model setup is a subpage of Models.
export const SETTINGS_NAVIGATION_GROUPS = [
  { labelKey: null, routes: ["custodian", "profile", "appearance", "notifications"] },
  {
    labelKey: "nav.settingsGroupConnections",
    routes: ["connection", "channels", "communications", "talk", "devices"],
  },
  {
    labelKey: "nav.settingsGroupAgents",
    routes: ["agents", "labs", "model-providers", "mcp", "memory", "automation"],
  },
  {
    labelKey: "nav.settingsGroupSecurity",
    routes: ["security", "secrets", "approvals"],
  },
  {
    labelKey: "nav.settingsGroupSystem",
    routes: ["infrastructure", "advanced", "debug", "logs", "updates", "about"],
  },
] as const satisfies readonly SettingsNavigationGroup[];

// Settings subpages render with settings chrome but stay out of the sidebar.
// Subpages with a visible owner keep that owner selected so users retain
// location context while completing the nested flow.
const SETTINGS_SUBPAGE_ROUTES: readonly NavigationRouteId[] = [
  "ai-agents",
  "model-setup",
  "lobsterdex",
];
export const SETTINGS_SEARCHABLE_SUBPAGE_ROUTES: readonly NavigationRouteId[] = ["ai-agents"];
const SETTINGS_SUBPAGE_OWNER_ROUTES: Partial<
  Readonly<Record<NavigationRouteId, NavigationRouteId>>
> = {
  "ai-agents": "agents",
  "model-setup": "model-providers",
};

const SETTINGS_NAVIGATION_ROUTES: ReadonlySet<NavigationRouteId> = new Set([
  ...SETTINGS_NAVIGATION_GROUPS.flatMap((group) => group.routes),
  ...SETTINGS_SUBPAGE_ROUTES,
]);

const NAVIGATION_ICONS: NavigationItem = {
  agents: "bot",
  activity: "activity",
  apps: "layoutGrid",
  approvals: "badgeCheck",
  workboard: "kanban",
  worktrees: "folder",
  channels: "link",
  connection: "radio",
  sessions: "fileText",
  usage: "coins",
  cron: "calendarClock",
  tasks: "listChecks",
  skills: "zap",
  plugins: "puzzle",
  "skill-workshop": "wrench",
  devices: "monitorSmartphone",
  chat: "messageSquare",
  dashboard: "layoutDashboard",
  dashboards: "layoutDashboard",
  custodian: "lobster",
  config: "settings",
  profile: "circleUser",
  communications: "send",
  appearance: "palette",
  lobsterdex: "bug",
  automation: "terminal",
  mcp: "wrench",
  memory: "book",
  talk: "mic",
  infrastructure: "globe",
  labs: "flaskConical",
  updates: "download",
  about: "fileText",
  "ai-agents": "brain",
  "model-setup": "spark",
  "model-providers": "plug",
  "memory-import": "download",
  notifications: "bell",
  security: "shieldCheck",
  secrets: "key",
  advanced: "fileCode",
  debug: "bug",
  logs: "scrollText",
  plugin: "puzzle",
  "new-session": "plus",
};

export function isSettingsNavigationRoute(routeId: NavigationRouteId): boolean {
  return SETTINGS_NAVIGATION_ROUTES.has(routeId);
}

export function settingsNavigationOwnerRoute(routeId: NavigationRouteId): NavigationRouteId {
  return SETTINGS_SUBPAGE_OWNER_ROUTES[routeId] ?? routeId;
}

export function navigationIconForRoute(routeId: NavigationRouteId): IconName {
  return NAVIGATION_ICONS[routeId] ?? "folder";
}

export function scheduleRoutePreload<TRouteId extends string>(
  timers: Map<EventTarget, ReturnType<typeof globalThis.setTimeout>>,
  routeId: TRouteId,
  event: Event,
  preload: ((routeId: TRouteId) => Promise<void> | void) | undefined,
  disabled = false,
  immediate = false,
) {
  if (disabled || !preload) {
    return;
  }
  const target = event.currentTarget;
  if (!target) {
    return;
  }
  const start = () => {
    timers.delete(target);
    try {
      void Promise.resolve(preload(routeId)).catch(() => undefined);
    } catch {
      // Preloading is opportunistic; navigation still handles real route errors.
    }
  };
  if (immediate) {
    cancelRoutePreload(timers, event);
    start();
    return;
  }
  if (!timers.has(target)) {
    timers.set(target, globalThis.setTimeout(start, 50));
  }
}

export function cancelRoutePreload(
  timers: Map<EventTarget, ReturnType<typeof globalThis.setTimeout>>,
  event: Event,
) {
  const target = event.currentTarget;
  if (!target) {
    return;
  }
  const timer = timers.get(target);
  if (timer !== undefined) {
    globalThis.clearTimeout(timer);
    timers.delete(target);
  }
}

const NAVIGATION_COPY: Record<NavigationRouteId, { titleKey: string; subtitleKey: string }> = {
  agents: { titleKey: "tabs.agents", subtitleKey: "subtitles.agents" },
  activity: { titleKey: "tabs.activity", subtitleKey: "subtitles.activity" },
  apps: { titleKey: "tabs.apps", subtitleKey: "subtitles.apps" },
  approvals: { titleKey: "tabs.approvals", subtitleKey: "subtitles.approvals" },
  workboard: { titleKey: "tabs.workboard", subtitleKey: "subtitles.workboard" },
  worktrees: { titleKey: "tabs.worktrees", subtitleKey: "subtitles.worktrees" },
  channels: { titleKey: "tabs.channels", subtitleKey: "subtitles.channels" },
  connection: { titleKey: "tabs.connection", subtitleKey: "subtitles.connection" },
  sessions: { titleKey: "tabs.sessions", subtitleKey: "subtitles.sessions" },
  usage: { titleKey: "tabs.usage", subtitleKey: "subtitles.usage" },
  cron: { titleKey: "tabs.cron", subtitleKey: "subtitles.cron" },
  tasks: { titleKey: "tabs.tasks", subtitleKey: "subtitles.tasks" },
  skills: { titleKey: "tabs.skills", subtitleKey: "subtitles.skills" },
  plugins: { titleKey: "tabs.plugins", subtitleKey: "subtitles.plugins" },
  "skill-workshop": {
    titleKey: "tabs.skillWorkshop",
    subtitleKey: "subtitles.skillWorkshop",
  },
  devices: { titleKey: "tabs.devices", subtitleKey: "subtitles.devices" },
  chat: { titleKey: "tabs.chat", subtitleKey: "subtitles.chat" },
  dashboard: { titleKey: "tabs.chat", subtitleKey: "subtitles.chat" },
  dashboards: { titleKey: "tabs.dashboards", subtitleKey: "subtitles.dashboards" },
  custodian: { titleKey: "tabs.custodian", subtitleKey: "subtitles.custodian" },
  config: { titleKey: "nav.settings", subtitleKey: "subtitles.config" },
  profile: { titleKey: "tabs.profile", subtitleKey: "subtitles.profile" },
  communications: {
    titleKey: "tabs.communications",
    subtitleKey: "subtitles.communications",
  },
  appearance: { titleKey: "tabs.appearance", subtitleKey: "subtitles.appearance" },
  lobsterdex: { titleKey: "tabs.lobsterdex", subtitleKey: "subtitles.lobsterdex" },
  automation: { titleKey: "tabs.automation", subtitleKey: "subtitles.automation" },
  mcp: { titleKey: "tabs.mcp", subtitleKey: "subtitles.mcp" },
  memory: { titleKey: "tabs.memory", subtitleKey: "subtitles.memory" },
  talk: { titleKey: "tabs.talk", subtitleKey: "subtitles.talk" },
  infrastructure: { titleKey: "tabs.infrastructure", subtitleKey: "subtitles.infrastructure" },
  labs: { titleKey: "tabs.labs", subtitleKey: "subtitles.labs" },
  updates: { titleKey: "tabs.updates", subtitleKey: "subtitles.updates" },
  about: { titleKey: "tabs.about", subtitleKey: "subtitles.about" },
  "ai-agents": { titleKey: "tabs.aiAgents", subtitleKey: "subtitles.aiAgents" },
  "model-setup": { titleKey: "tabs.modelSetup", subtitleKey: "subtitles.modelSetup" },
  "model-providers": {
    titleKey: "routeTitles.modelProviders",
    subtitleKey: "subtitles.modelProviders",
  },
  "memory-import": { titleKey: "tabs.memoryImport", subtitleKey: "subtitles.memoryImport" },
  notifications: {
    titleKey: "routeTitles.notifications",
    subtitleKey: "subtitles.notifications",
  },
  security: { titleKey: "tabs.security", subtitleKey: "subtitles.security" },
  secrets: { titleKey: "tabs.secrets", subtitleKey: "secretsStore.hint" },
  advanced: { titleKey: "routeTitles.advanced", subtitleKey: "subtitles.advanced" },
  debug: { titleKey: "tabs.debug", subtitleKey: "subtitles.debug" },
  logs: { titleKey: "tabs.logs", subtitleKey: "subtitles.logs" },
  plugin: { titleKey: "tabs.plugin", subtitleKey: "subtitles.plugin" },
  "new-session": { titleKey: "newSession.title", subtitleKey: "newSession.hint" },
};

export function titleForRoute(routeId: NavigationRouteId): string {
  return t(NAVIGATION_COPY[routeId].titleKey);
}

/** Window/tab title, markers leftmost because tabs truncate from the right.
 * Offline replaces the approval count (a stale queue is not actionable) and
 * carries the pending-outbox total; titles already ending in the brand
 * ("Ask OpenClaw") skip the suffix so it never reads "… OpenClaw — OpenClaw". */
export function formatDocumentTitle(options: {
  context: string;
  attentionCount?: number;
  offline?: boolean;
  queuedCount?: number;
}): string {
  const base = options.context.endsWith("OpenClaw")
    ? options.context
    : `${options.context} — OpenClaw`;
  if (options.offline) {
    const queued =
      options.queuedCount && options.queuedCount > 0
        ? ` · ${t("connection.queuedCount", { count: String(options.queuedCount) })}`
        : "";
    return `(${t("common.offline")}${queued}) ${base}`;
  }
  if (options.attentionCount && options.attentionCount > 0) {
    return `(${options.attentionCount}) ${base}`;
  }
  return base;
}

export function settingsNavigationLabelForRoute(routeId: NavigationRouteId): string {
  if (routeId === "custodian") {
    return t("nav.askOpenClaw");
  }
  return titleForRoute(routeId);
}

export function subtitleForRoute(routeId: NavigationRouteId): string {
  return t(NAVIGATION_COPY[routeId].subtitleKey);
}