public async Task OpenFile(string fileId, int projectId) // open file
{
var userId = _connections.GetUserIdByConnection(Context.ConnectionId);
//await Groups.AddToGroupAsync(Context.ConnectionId, fileId);
if (!_files.ContainsFile(fileId))
{
_files.AddFileToEdit(userId, fileId, projectId);
await SendNewFileState(projectId, fileId, userId);
}
}
