import { TrackPermission } from '@livekit/protocol';

export interface ParticipantTrackPermission {
  /**
   * The participant identity this permission applies to.
   * You can either provide this or `participantSid`
   */
  participantIdentity?: string;

  /**
   * The participant server id this permission applies to.
   * You can either provide this or `participantIdentity`
   */
  participantSid?: string;

  /**
   * Grant permission to all all tracks. Takes precedence over allowedTrackSids.
   * false if unset.
   */
  allowAll?: boolean;

  /**
   * The list of track ids that the target participant can subscribe to.
   * When unset, it'll allow all tracks to be subscribed by the participant.
   * When empty, this participant is disallowed from subscribing to any tracks.
   */
  allowedTrackSids?: string[];
}

export function trackPermissionToProto(perms: ParticipantTrackPermission): TrackPermission {
  if (!perms.participantSid && !perms.participantIdentity) {
    throw new Error(
      'Invalid track permission, must provide at least one of participantIdentity and participantSid',
    );
  }
  return new TrackPermission({
    participantIdentity: perms.participantIdentity ?? '',
    participantSid: perms.participantSid ?? '',
    allTracks: perms.allowAll ?? false,
    trackSids: perms.allowedTrackSids || [],
  });
}