public override LeafStep AdvanceStep(DateTime now)
{
var leafStep = SubSteps[_currentSubStepIndex].AdvanceStep(now);
if (!Active && !Completed)
{
Active = true;
}
else if (Active && !Completed)
{
if (SubSteps[_currentSubStepIndex].Completed)
{
ExecutionTime.Increment(SubSteps[_currentSubStepIndex].ExecutionTime);
if (IsLastSubStep())
{
Active = false;
Completed = true;
CurrentSubStep = null;
return(null);
}
else
{
_currentSubStepIndex++;
CurrentSubStep = SubSteps[_currentSubStepIndex];
leafStep = CurrentSubStep.AdvanceStep(now);
}
}
}
else
{
throw new InvalidOperationException(message: "This step has already been completed. Can't perform it again.");
}
return(leafStep);
}
