/// <summary>
/// Caller presents a decision to the Gateway and waits for the gateway to return an choice.
/// </summary>
public Task <T> Decision <T>(Select.TypedDecision <T> originalDecision) where T : class, IOption
{
if (originalDecision == null)
{
throw new ArgumentNullException(nameof(originalDecision));
}
if (activeDecisionMaker != null)
{
throw new InvalidOperationException($"Pending decision was not properly awaited. Current:[{activeDecisionMaker.Decision.Prompt}], Previous:[{originalDecision.Prompt}] ");
}
var promise = new TaskCompletionSource <T>();
var decisionMaker = new ActionHelper <T>(originalDecision, promise);
var decision = decisionMaker.Decision;
if (decision.Options.Length == 0)
{
// Auto-Select NULL
promise.TrySetResult(null);
}
else if (decision.Options.Length == 1 && decision.AllowAutoSelect)
{
// Auto-Select Single
decisionMaker.Select(decision.Options[0]);
Log(new DecisionLogEntry(decision.Options[0], decision, true));
}
else
{
activeDecisionMaker = decisionMaker;
signal.Set();
NewWaitingDecision?.Invoke(decision);
}
return(promise.Task);
}
public Task <T> Decision <T>(Select.TypedDecision <T> originalDecision) where T : class, IOption => Self.Action.Decision(originalDecision);