export const inactivityPolicy = {
  closeAfter: 10 * 60_000,
  expireAfter: 24 * 60 * 60_000,
};

export function roomActivityAt(room) {
  return Date.parse(
    room.lastGameActivityAt ??
      room.events?.at(-1)?.createdAt ??
      room.startedAt ??
      room.createdAt,
  );
}

export function roomDeadlines(room) {
  const activity = roomActivityAt(room);
  return {
    inactiveCloseAt: activity + inactivityPolicy.closeAfter,
    autoCloseAt: activity + inactivityPolicy.expireAfter,
  };
}

export function canCloseInactive(room, seat, now = Date.now()) {
  if (
    room.status !== 'playing' ||
    !room.players[seat] ||
    room.players[seat].withdrawnAt
  )
    return false;
  const waiting =
    room.state?.phase === 'scoring'
      ? room.state.accepted?.[seat] &&
        room.state.accepted.some((accepted, i) => i !== seat && !accepted)
      : room.state?.turn !== seat;
  return Boolean(waiting && now >= roomDeadlines(room).inactiveCloseAt);
}