import { useQuery } from '@tanstack/react-query';
import { refundsApi } from '../apis';
import { refundKeys } from '../keys';
import {
  REFUND_STATUS_GC_TIME,
  REFUND_STATUS_POLL_INTERVAL_MS,
  REFUND_STATUS_STALE_TIME,
} from '../constants';
import { isTerminalRefundStatus } from '../types';

/**
 * The customer's read-only refund status for a booking. Polls (`refetchInterval`) **only while the refund
 * is non-terminal** (`requested`/`approved`/`processing`) and **stops** at `succeeded`/`failed`/`rejected`
 * — and never polls the empty state (no refund → `null`). A modest `staleTime`/`gcTime` means re-entering
 * the screen doesn't re-hit the network needlessly; the cancel mutation primes this key so the first render
 * is warm. `data` is `null` when the booking has no refund.
 */
export function useRefundStatus(bookingId: number | undefined, options?: { enabled?: boolean }) {
  return useQuery({
    queryKey: refundKeys.byBooking(bookingId ?? -1),
    queryFn: () => refundsApi.getRefundByBooking(bookingId as number),
    enabled: (options?.enabled ?? true) && bookingId != null && bookingId > 0,
    staleTime: REFUND_STATUS_STALE_TIME,
    gcTime: REFUND_STATUS_GC_TIME,
    refetchInterval: (query) => {
      const refund = query.state.data;
      if (!refund) return false;
      return isTerminalRefundStatus(refund.refundStatus) ? false : REFUND_STATUS_POLL_INTERVAL_MS;
    },
  });
}