import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";

import {
  addAdminMemoryEntry,
  addAdminV1Fact,
  deleteAdminMemoryEntry,
  deleteAdminV1Fact,
  generateUserLeaderboardReport,
  getUserMemory,
  getUserAnalytics,
  getUserLeaderboard,
  refreshTodayLeaderboard,
  listUserQa,
  listUserThreadMessages,
  listUserThreads,
  replaceAdminMemoryEntry,
  updateAdminV1Fact,
  updateAdminV1Section,
} from "./api";
import {
  cancelActiveRun,
  cancelAllActiveRuns,
  getMonitorSettings,
  loadActiveRuns,
  loadConcurrencySeries,
  loadTokenSpeedSeries,
  updateMonitorSettings,
  type Granularity,
} from "./active-runs";

// ── 实时并发监控 (admin) ─────────────────────────────────────────────────────

/** Live snapshot of in-flight runs. Polls every `intervalMs` while `enabled`. */
export function useActiveRuns(enabled = true, intervalMs = 4000) {
  return useQuery({
    queryKey: ["admin-active-runs", "live"],
    queryFn: loadActiveRuns,
    enabled,
    refetchInterval: enabled ? intervalMs : false,
    refetchOnWindowFocus: false,
  });
}

/** 并发量时序 (peak/avg per minute|hour). */
export function useConcurrencySeries(
  granularity: Granularity,
  hours: number | undefined,
  enabled = true,
  intervalMs = 15000,
) {
  return useQuery({
    queryKey: ["admin-active-runs", "concurrency", granularity, hours ?? null],
    queryFn: () => loadConcurrencySeries(granularity, hours),
    enabled,
    refetchInterval: enabled ? intervalMs : false,
    refetchOnWindowFocus: false,
  });
}

/** 大模型 token 出字速度时序 (tokens/sec per minute|hour). */
export function useTokenSpeedSeries(
  granularity: Granularity,
  hours: number | undefined,
  enabled = true,
  intervalMs = 15000,
) {
  return useQuery({
    queryKey: ["admin-active-runs", "token-speed", granularity, hours ?? null],
    queryFn: () => loadTokenSpeedSeries(granularity, hours),
    enabled,
    refetchInterval: enabled ? intervalMs : false,
    refetchOnWindowFocus: false,
  });
}

export function useCancelActiveRun() {
  const qc = useQueryClient();
  return useMutation({
    mutationFn: (runId: string) => cancelActiveRun(runId),
    onSuccess: () => qc.invalidateQueries({ queryKey: ["admin-active-runs", "live"] }),
  });
}

export function useCancelAllActiveRuns() {
  const qc = useQueryClient();
  return useMutation({
    mutationFn: () => cancelAllActiveRuns(),
    onSuccess: () => qc.invalidateQueries({ queryKey: ["admin-active-runs", "live"] }),
  });
}

export function useMonitorSettings(enabled = true) {
  return useQuery({
    queryKey: ["admin-active-runs", "settings"],
    queryFn: getMonitorSettings,
    enabled,
    refetchOnWindowFocus: false,
  });
}

export function useUpdateMonitorSettings() {
  const qc = useQueryClient();
  return useMutation({
    mutationFn: (nextEnabled: boolean) => updateMonitorSettings(nextEnabled),
    onSuccess: (data) => {
      qc.setQueryData(["admin-active-runs", "settings"], data);
    },
  });
}

export function useUserLeaderboard(
  range: {
    since: string;
    until: string;
    days?: number;
  },
  limit = 20,
) {
  return useQuery({
    queryKey: [
      "admin-activity",
      "leaderboard",
      range.since,
      range.until,
      limit,
    ],
    queryFn: () => getUserLeaderboard(range, limit),
    refetchInterval: (query) => {
      const status = query.state.data?.status;
      return status === "running" || status === "refreshing" ? 3000 : false;
    },
  });
}

/**
 * Force-rebuild today's snapshot, then prime + invalidate the matching
 * leaderboard query so the page shows the freshly recomputed numbers.
 */
export function useRefreshTodayLeaderboard() {
  const qc = useQueryClient();
  return useMutation({
    mutationFn: ({
      range,
      limit = 20,
    }: {
      range: { since: string; until: string; days?: number };
      limit?: number;
    }) => refreshTodayLeaderboard(range, limit),
    onSuccess: (data, variables) => {
      qc.setQueryData(
        [
          "admin-activity",
          "leaderboard",
          variables.range.since,
          variables.range.until,
          variables.limit ?? 20,
        ],
        data,
      );
      qc.invalidateQueries({ queryKey: ["admin-activity", "leaderboard"] });
    },
  });
}

export function useUserAnalytics(
  userId: string | null,
  range: { since: string; until: string; days?: number },
  limit = 20,
) {
  return useQuery({
    queryKey: ["admin-activity", "analytics", userId, range.since, range.until, limit],
    queryFn: () => getUserAnalytics(userId!, range, limit),
    enabled: !!userId,
  });
}

export function useGenerateUserLeaderboardReport() {
  return useMutation({
    mutationFn: ({
      range,
      limit,
      modelName,
    }: {
      range: { since: string; until: string; days?: number };
      limit?: number;
      modelName?: string;
    }) => generateUserLeaderboardReport(range, limit ?? 30, modelName),
  });
}

/** Threads owned by a given user. Disabled until a user is picked. */
export function useUserThreads(userId: string | null) {
  return useQuery({
    queryKey: ["admin-activity", "threads", userId],
    queryFn: () => listUserThreads(userId!),
    enabled: !!userId,
  });
}

export function useUserQa(
  userId: string | null,
  params: { page: number; pageSize: number; q?: string },
) {
  return useQuery({
    queryKey: ["admin-activity", "qa", userId, params.page, params.pageSize, params.q ?? ""],
    queryFn: () => listUserQa(userId!, params),
    enabled: !!userId,
  });
}

/** Messages of a given thread. Disabled until a thread is picked. */
export function useUserThreadMessages(
  userId: string | null,
  threadId: string | null,
) {
  return useQuery({
    queryKey: ["admin-activity", "messages", userId, threadId],
    queryFn: () => listUserThreadMessages(userId!, threadId!),
    enabled: !!userId && !!threadId,
  });
}

/** All memory buckets of a given user. Disabled until a user is picked. */
export function useUserMemory(userId: string | null) {
  return useQuery({
    queryKey: ["admin-activity", "memory", userId],
    queryFn: () => getUserMemory(userId!),
    enabled: !!userId,
  });
}

function useMemoryInvalidate(userId: string) {
  const qc = useQueryClient();
  return () => qc.invalidateQueries({ queryKey: ["admin-activity", "memory", userId] });
}

export function useAdminAddMemoryEntry(userId: string) {
  const invalidate = useMemoryInvalidate(userId);
  return useMutation({
    mutationFn: ({ content, agent }: { content: string; agent: string | null }) =>
      addAdminMemoryEntry(userId, content, agent),
    onSuccess: invalidate,
  });
}

export function useAdminReplaceMemoryEntry(userId: string) {
  const invalidate = useMemoryInvalidate(userId);
  return useMutation({
    mutationFn: ({ oldText, content, agent }: { oldText: string; content: string; agent: string | null }) =>
      replaceAdminMemoryEntry(userId, oldText, content, agent),
    onSuccess: invalidate,
  });
}

export function useAdminDeleteMemoryEntry(userId: string) {
  const invalidate = useMemoryInvalidate(userId);
  return useMutation({
    mutationFn: ({ oldText, agent }: { oldText: string; agent: string | null }) =>
      deleteAdminMemoryEntry(userId, oldText, agent),
    onSuccess: invalidate,
  });
}

// ── V1 CRUD hooks ──────────────────────────────────────────────────────────

export function useAdminUpdateV1Section(userId: string) {
  const invalidate = useMemoryInvalidate(userId);
  return useMutation({
    mutationFn: ({
      sectionType,
      field,
      summary,
      agent,
    }: {
      sectionType: "user" | "history";
      field: string;
      summary: string;
      agent: string | null;
    }) => updateAdminV1Section(userId, sectionType, field, summary, agent),
    onSuccess: invalidate,
  });
}

export function useAdminAddV1Fact(userId: string) {
  const invalidate = useMemoryInvalidate(userId);
  return useMutation({
    mutationFn: ({
      content,
      category,
      confidence,
      agent,
    }: {
      content: string;
      category: string;
      confidence: number;
      agent: string | null;
    }) => addAdminV1Fact(userId, content, category, confidence, agent),
    onSuccess: invalidate,
  });
}

export function useAdminUpdateV1Fact(userId: string) {
  const invalidate = useMemoryInvalidate(userId);
  return useMutation({
    mutationFn: ({
      factId,
      updates,
      agent,
    }: {
      factId: string;
      updates: { content?: string; category?: string; confidence?: number };
      agent: string | null;
    }) => updateAdminV1Fact(userId, factId, updates, agent),
    onSuccess: invalidate,
  });
}

export function useAdminDeleteV1Fact(userId: string) {
  const invalidate = useMemoryInvalidate(userId);
  return useMutation({
    mutationFn: ({ factId, agent }: { factId: string; agent: string | null }) =>
      deleteAdminV1Fact(userId, factId, agent),
    onSuccess: invalidate,
  });
}