useDirectLink method

Implementation

@override
Future<ChatId> useDirectLink(DirectLinkSlug slug) async {
  Log.debug('useDirectLink($slug)', '$runtimeType');

  if (me.isLocal) {
    final query = await _graphQlProvider.searchLink(slug);
    final DtoUser? user = query.searchUsers.edges.firstOrNull?.node.toDto();
    if (user == null) {
      return support;
    }

    _userRepo.put(user);

    // Store the transition only if [User] found by [slug] exists.
    await _slugProvider.upsert(slug);

    return ChatId.local(user.id);
  }

  final response = await Backoff.run(
    () async => await _graphQlProvider.useDirectLink(slug),
    retryIf: (e) => e.isNetworkRelated,
    retries: 10,
  );

  _add(
    DtoChat(
      response.chat.toModel(),
      response.chat.ver,
      null,
      null,
      null,
      null,
    ),
  );

  return response.chat.id;
}