import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
import {
  AuditEvent,
  cursorPage,
  Id,
  Site,
  SiteAccount,
  type SiteCreate,
  type SiteCredentialsBody,
  SiteCredentialsResult,
  SiteDefinitionView,
  SiteHealthResult,
  SiteListItem,
  SiteRefreshLoginAccepted,
  SiteRequestStats,
  SiteSnapshot,
  type SiteUpdate,
  SiteUserDataPoint,
} from "@umt/contracts";
import { z } from "zod";
import { TTL_SECOND } from "~/lib/api.ts";
import { apiMutate, apiParsed } from "./parse.ts";

// 站点、站点账号、站点快照(W2-B:/sites、/site-accounts、/sites/{id}/snapshot(s))
// 站点中心(W9-A):include=accounts、凭证 PUT、健康检测、刷新登录、用户数据、删除

const SitePage = cursorPage(SiteListItem);
const AccountPage = cursorPage(SiteAccount);
const SnapshotPage = cursorPage(SiteSnapshot);

export const siteKeys = {
  all: ["sites"] as const,
  list: () => ["sites", "list"] as const,
  one: (id: string) => ["sites", "one", id] as const,
  accounts: (siteId?: string) => ["sites", "accounts", siteId ?? "all"] as const,
  snapshots: (siteId: string) => ["sites", "snapshots", siteId] as const,
  requestStats: (siteId: string) => ["sites", "request-stats", siteId] as const,
  definitions: () => ["sites", "definitions"] as const,
  userData: (siteId: string, accountId?: string, days = 30) =>
    ["sites", "user-data", siteId, accountId ?? "first", days] as const,
  loginHistory: (accountId: string) => ["sites", "login-history", accountId] as const,
};

/** 站点列表(附账号与整体账号状态,站点页一次请求) */
export function useSites() {
  return useQuery({
    queryKey: siteKeys.list(),
    queryFn: ({ signal }) =>
      apiParsed(SitePage, "/api/v1/sites", { params: { limit: 200, include: "accounts" }, signal }),
  });
}

export function useSite(id: string | undefined) {
  return useQuery({
    queryKey: siteKeys.one(id ?? ""),
    enabled: !!id && Id.safeParse(id).success,
    queryFn: ({ signal }) => apiParsed(Site, "/api/v1/sites/:id", { pathParams: { id: id ?? "" }, signal }),
  });
}

export function useSiteAccounts(siteId?: string) {
  return useQuery({
    queryKey: siteKeys.accounts(siteId),
    queryFn: ({ signal }) =>
      apiParsed(AccountPage, "/api/v1/site-accounts", { params: { limit: 200, siteId }, signal }),
  });
}

export function useSiteDefinitions() {
  return useQuery({
    queryKey: siteKeys.definitions(),
    staleTime: 5 * 60 * TTL_SECOND,
    queryFn: ({ signal }) =>
      apiParsed(z.object({ items: z.array(SiteDefinitionView) }), "/api/v1/site-definitions", { signal }),
  });
}

/** 快照/补查记录;有 running 时 5 秒轮询 */
export function useSiteSnapshots(siteId: string | undefined, limit = 20) {
  return useQuery({
    queryKey: siteKeys.snapshots(siteId ?? ""),
    enabled: !!siteId,
    queryFn: ({ signal }) =>
      apiParsed(SnapshotPage, "/api/v1/sites/:id/snapshots", {
        pathParams: { id: siteId ?? "" },
        params: { limit },
        signal,
      }),
    refetchInterval: (q) => (q.state.data?.items.some((s) => s.status === "running") ? 5 * TTL_SECOND : false),
  });
}

/** 最近 24 小时对该站的请求次数与生效的访问默认(每分钟刷新) */
export function useSiteRequestStats(siteId: string | undefined) {
  return useQuery({
    queryKey: siteKeys.requestStats(siteId ?? ""),
    enabled: !!siteId,
    refetchInterval: 60 * TTL_SECOND,
    queryFn: ({ signal }) =>
      apiParsed(SiteRequestStats, "/api/v1/sites/:id/request-stats", { pathParams: { id: siteId ?? "" }, signal }),
  });
}

/** 访问默认的一句话说明:"快照每 60 分钟 1 页 · 健康检测每 6 小时 · 详情缓存 24 小时" */
export function accessSummary(s: SiteRequestStats): string {
  const dur = (sec: number) => (sec % 3600 === 0 ? `${sec / 3600} 小时` : `${Math.round(sec / 60)} 分钟`);
  const parts = [
    `抓取每 ${dur(s.snapshotIntervalSec)} ${s.access.snapshotMaxPages} 页`,
    `健康检测每 ${dur(s.access.healthCheckIntervalSec)}`,
  ];
  if (s.access.detailCacheSec > 0) parts.push(`详情缓存 ${dur(s.access.detailCacheSec)}`);
  return parts.join(" · ");
}

/** 启用 / 停用站点 */
export function useToggleSite() {
  const qc = useQueryClient();
  return useMutation({
    mutationFn: ({ id, enabled }: { id: string; enabled: boolean }) =>
      apiMutate(`/api/v1/sites/:id/${enabled ? "enable" : "disable"}`, { pathParams: { id } }).then((d) =>
        Site.parse(d),
      ),
    onSuccess: () => qc.invalidateQueries({ queryKey: siteKeys.all }),
  });
}

/** 手动快照(受站点限流),返回任务 ID */
export function useSnapshotSite() {
  const qc = useQueryClient();
  return useMutation({
    mutationFn: ({ id, maxPages }: { id: string; maxPages?: number }) =>
      apiMutate(`/api/v1/sites/:id/snapshot`, { pathParams: { id }, body: maxPages ? { maxPages } : {} }).then((d) =>
        z.object({ taskId: Id }).parse(d),
      ),
    onSuccess: (_d, v) => {
      qc.invalidateQueries({ queryKey: siteKeys.snapshots(v.id) });
      qc.invalidateQueries({ queryKey: siteKeys.list() });
    },
  });
}

/** 快照新鲜度:从未快照或超过 2 个周期视为过期(与服务端 WorkbenchCoverage.stale 同口径) */
export function snapshotStale(site: Pick<Site, "lastSnapshotAt" | "snapshotIntervalSec">, now = Date.now()) {
  if (!site.lastSnapshotAt) return true;
  const interval = (site.snapshotIntervalSec ?? 3600) * 1000;
  return now - new Date(site.lastSnapshotAt).getTime() > interval * 2;
}

/** 登记站点(POST /sites) */
export function useCreateSite() {
  const qc = useQueryClient();
  return useMutation({
    mutationFn: (body: SiteCreate) => apiMutate("/api/v1/sites", { body }).then((d) => Site.parse(d)),
    onSuccess: () => qc.invalidateQueries({ queryKey: siteKeys.all }),
  });
}

/** 修改站点(名称、域名、限流、快照、代理) */
export function useUpdateSite() {
  const qc = useQueryClient();
  return useMutation({
    mutationFn: ({ id, body }: { id: string; body: SiteUpdate }) =>
      apiMutate("/api/v1/sites/:id", { method: "PATCH", pathParams: { id }, body }).then((d) => Site.parse(d)),
    onSuccess: () => qc.invalidateQueries({ queryKey: siteKeys.all }),
  });
}

/** 删除站点:资源标 site_disabled 保留,账号与凭证删除 */
export function useDeleteSite() {
  const qc = useQueryClient();
  return useMutation({
    mutationFn: (id: string) => apiMutate("/api/v1/sites/:id", { method: "DELETE", pathParams: { id } }),
    onSuccess: () => qc.invalidateQueries({ queryKey: siteKeys.all }),
  });
}

/** 写凭证(按 kind 判别);只写不回显,账号回到未验证 */
export function usePutCredentials() {
  const qc = useQueryClient();
  return useMutation({
    mutationFn: ({ siteId, body }: { siteId: string; body: SiteCredentialsBody }) =>
      apiMutate("/api/v1/sites/:id/credentials", { method: "PUT", pathParams: { id: siteId }, body }).then((d) =>
        SiteCredentialsResult.parse(d),
      ),
    onSuccess: () => qc.invalidateQueries({ queryKey: siteKeys.all }),
  });
}

/** 删除站点账号及其凭证 */
export function useDeleteSiteAccount() {
  const qc = useQueryClient();
  return useMutation({
    mutationFn: (id: string) => apiMutate("/api/v1/site-accounts/:id", { method: "DELETE", pathParams: { id } }),
    onSuccess: () => qc.invalidateQueries({ queryKey: siteKeys.all }),
  });
}

/** 检测健康(同步,≤20 s) */
export function useHealthCheck() {
  const qc = useQueryClient();
  return useMutation({
    mutationFn: (id: string) =>
      apiMutate("/api/v1/sites/:id/health-check", { pathParams: { id }, body: {} }).then((d) =>
        SiteHealthResult.parse(d),
      ),
    onSettled: () => qc.invalidateQueries({ queryKey: siteKeys.all }),
  });
}

/** 刷新登录;界面上用 wait=true 同步拿结果(≤30 s) */
export function useRefreshLogin() {
  const qc = useQueryClient();
  return useMutation({
    mutationFn: ({ id, accountId }: { id: string; accountId?: string }) =>
      apiMutate("/api/v1/sites/:id/refresh-login", {
        pathParams: { id },
        body: { wait: true, ...(accountId ? { accountId } : {}) },
      }).then((d) => SiteRefreshLoginAccepted.parse(d)),
    onSettled: () => qc.invalidateQueries({ queryKey: siteKeys.all }),
  });
}

/** 用户数据按天历史 */
export function useSiteUserData(siteId: string | undefined, accountId?: string, days = 30) {
  return useQuery({
    queryKey: siteKeys.userData(siteId ?? "", accountId, days),
    enabled: !!siteId,
    queryFn: ({ signal }) =>
      apiParsed(z.object({ items: z.array(SiteUserDataPoint) }), "/api/v1/sites/:id/user-data", {
        pathParams: { id: siteId ?? "" },
        params: { days, accountId },
        signal,
      }),
  });
}

/** 登录历史:审计里该账号的凭证与登录事件 */
export function useLoginHistory(accountId: string | undefined) {
  return useQuery({
    queryKey: siteKeys.loginHistory(accountId ?? ""),
    enabled: !!accountId,
    queryFn: ({ signal }) =>
      apiParsed(cursorPage(AuditEvent), "/api/v1/audit-events", {
        params: { targetType: "site_account", targetId: accountId, limit: 20 },
        signal,
      }),
  });
}