public async Task <TaskDetailsDto> Handle(AssignUserToTaskCommand request, CancellationToken cancellationToken)
{
var taskFromDb = await _taskService.GetTaskWithEagerLoadingAsync(request.TaskId);
if (!_authService.UserRoleAdminOrUserIdMatches(request.UserId))
{
throw new AuthenticationException("You don't have permission to assign anyone else beside yourself to a task.");
}
await _taskService.AddUserToTaskAsync(taskFromDb, request.UserId);
return(_mapper.Map <TaskDetailsDto>(taskFromDb));
}
