"use client";

import { useQuery, useQueryClient } from "@tanstack/react-query";
import type { ContentItem } from "@muse/shared";
import { API_BASE_URL } from "@/lib/api";

async function fetchDetail(
  platform: string,
  id: string
): Promise<ContentItem> {
  const res = await fetch(
    `${API_BASE_URL}/api/tikhub/${platform}/detail?id=${encodeURIComponent(id)}`
  );
  if (!res.ok) {
    const data = await res.json().catch(() => ({}));
    throw new Error(data.error || `请求失败: ${res.status}`);
  }
  const data = await res.json();
  return data.data;
}

/**
 * Look up an item from TanStack Query's trending list cache.
 * Checks both platform-specific and "all" caches.
 */
function findCachedItem(
  queryClient: ReturnType<typeof useQueryClient>,
  platform: string,
  id: string
): ContentItem | undefined {
  const keys = [["content", platform], ["content", "all"]];
  for (const key of keys) {
    const items = queryClient.getQueryData<ContentItem[]>(key);
    if (items) {
      const found = items.find(
        (item) => item.id === id && item.platform === platform
      );
      if (found) return found;
    }
  }
  return undefined;
}

export function useDetailQuery(platform: string, id: string) {
  const queryClient = useQueryClient();
  const cached = findCachedItem(queryClient, platform, id);

  return useQuery<ContentItem>({
    queryKey: ["detail", platform, id],
    queryFn: () => fetchDetail(platform, id),
    // Skip API call if item already in trending cache
    enabled: !!platform && !!id && !cached,
    initialData: cached,
    staleTime: 5 * 60 * 1000,
    retry: 1,
  });
}