import { MatrixEvent } from 'matrix-js-sdk';
import { IRTCNotificationContent } from 'matrix-js-sdk/lib/matrixrtc/types';

export const RTC_NOTIFICATION_DEFAULT_LIFETIME = 30_000;

export const getNotificationEventSendTs = (ev: MatrixEvent): number => {
  const content = ev.getContent<IRTCNotificationContent>();
  const sendTs = content.sender_ts;
  const eventTs = ev.getTs();
  if (sendTs && Math.abs(sendTs - eventTs) >= 15_000) return eventTs;
  return sendTs ?? eventTs;
};

export const isRtcNotificationExpired = (ev: MatrixEvent, now = Date.now()): boolean => {
  const content = ev.getContent<IRTCNotificationContent>();
  const lifetime = content.lifetime ?? RTC_NOTIFICATION_DEFAULT_LIFETIME;
  return now - getNotificationEventSendTs(ev) > lifetime;
};

export const getIncomingCallKey = (callId: string, roomId: string): string =>
  `call_${callId}_${roomId}`;