import { useQuery, type QueryKey } from "@tanstack/react-query";

// Reusable "live" polling query: a thin wrapper over react-query that refetches on an
// interval and — by leaving refetchIntervalInBackground at its default false — pauses while
// the tab is unfocused, so it doesn't poll a server nobody's watching. This is the shared
// live-progress mechanism: the Scheduler dashboard uses it now; the notification bell and the
// future yt-dlp job queue reuse it rather than each re-implementing polling.
export function useLiveQuery<T>(
  key: QueryKey,
  queryFn: () => Promise<T>,
  opts: { intervalMs?: number; enabled?: boolean } = {}
) {
  const { intervalMs = 4000, enabled = true } = opts;
  return useQuery({
    queryKey: key,
    queryFn,
    enabled,
    refetchInterval: enabled ? intervalMs : false,
    refetchIntervalInBackground: false,
    staleTime: 0,
  });
}