broadcastRemoveNip51Relay method

Implementation

Future<Nip51List?> broadcastRemoveNip51Relay(
  int kind,
  String relayUrl,
  Iterable<String>? broadcastRelays, {
  List<String>? defaultRelaysIfEmpty,
}) async {
  if (_eventSigner == null) {
    throw Exception(
        "cannot broadcast private nip51 list without a signer that can sign");
  }
  Nip51List? list = await getSingleNip51List(
    kind,
    _eventSigner!,
    forceRefresh: true,
  );
  if ((list == null || list.allRelays.isEmpty) &&
      defaultRelaysIfEmpty != null &&
      defaultRelaysIfEmpty.isNotEmpty) {
    list = Nip51List(
        kind: kind,
        pubKey: _eventSigner!.getPublicKey(),
        createdAt: Helpers.now,
        elements: []);
    list.privateRelays = defaultRelaysIfEmpty;
  }
  if (list != null && list.allRelays.isNotEmpty) {
    list.removeRelay(relayUrl);
    list.createdAt = Helpers.now;
    Nip01Event event = await list.toEvent(_eventSigner);

    final broadcastResponse = _broadcast.broadcast(
      nostrEvent: event,
      specificRelays: broadcastRelays,
      customSigner: _eventSigner,
    );

    await broadcastResponse.broadcastDoneFuture;

    List<Nip01Event>? events = await _cacheManager
        .loadEvents(pubKeys: [_eventSigner!.getPublicKey()], kinds: [kind]);
    for (var event in events) {
      _cacheManager.removeEvent(event.id);
    }
    await _cacheManager.saveEvent(event);
  }
  return list;
}