type BookingExpiresAt = string | Date | Record<string, unknown> | null | undefined

const bookingExpiresAtMs = (expiresAt: BookingExpiresAt): number | null => {
  if (expiresAt == null) return null
  if (typeof expiresAt === 'string' || expiresAt instanceof Date) {
    const ms = new Date(expiresAt).getTime()

    return Number.isNaN(ms) ? null : ms
  }

  return null
}

/** Whether a pending_payment booking's hold window has passed (client clock). */
export const isBookingPaymentExpired = (booking: { status: string; expiresAt?: BookingExpiresAt }): boolean => {
  const expiresAtMs = bookingExpiresAtMs(booking.expiresAt)

  return booking.status === 'pending_payment' && expiresAtMs != null && expiresAtMs <= Date.now()
}