/// <inheritdoc />
public override Task RemoveFromGroupAsync(string connectionId, string groupName, CancellationToken cancellationToken = default)
{
if (connectionId == null)
{
throw new ArgumentNullException(nameof(connectionId));
}
if (groupName == null)
{
throw new ArgumentNullException(nameof(groupName));
}
var connection = _connections[connectionId];
if (connection == null)
{
return(Task.CompletedTask);
}
if (_groups.Remove(connectionId, groupName))
{
//empty group
return(_localDirectory.PerformAction(DirectoryAction.RemoveGroup(_hubName, groupName)));
}
return(Task.CompletedTask);
}
/// <inheritdoc />
public override Task OnDisconnectedAsync(HubConnectionContext connection)
{
_connections.Remove(connection);
var emptyGroups = _groups.RemoveDisconnectedConnection(connection.ConnectionId);
var actions = new List <DirectoryAction>();
actions.Add(DirectoryAction.RemoveConnection(_hubName, connection.ConnectionId));
if (!string.IsNullOrEmpty(connection.UserIdentifier))
{
actions.Add(DirectoryAction.RemoveUser(_hubName, connection.UserIdentifier));
}
actions.AddRange(emptyGroups.Select(g => DirectoryAction.RemoveGroup(_hubName, g)));
return(_localDirectory.PerformActions(actions));
}
