/// <summary>
/// Called when input has been received, recognizes choice.
/// </summary>
/// <param name="dc">The <see cref="DialogContext"/> for the current turn of conversation.</param>
/// <param name="cancellationToken">Optional, the <see cref="CancellationToken"/> that can be used by other objects or threads to receive notice of cancellation.</param>
/// <returns>InputState which reflects whether input was recognized as valid or not.</returns>
protected override Task <InputState> OnRecognizeInputAsync(DialogContext dc, CancellationToken cancellationToken = default)
{
var input = dc.State.GetValue <object>(VALUE_PROPERTY);
var options = dc.State.GetValue <ChoiceInputOptions>(ThisPath.Options);
var choices = options.Choices;
if (dc.Context.Activity.Type == ActivityTypes.Message)
{
var opt = RecognizerOptions?.GetValue(dc.State) ?? new FindChoicesOptions();
opt.Locale = DetermineCulture(dc, opt);
var results = ChoiceRecognizers.RecognizeChoices(input.ToString(), choices, opt);
if (results == null || results.Count == 0)
{
return(Task.FromResult(InputState.Unrecognized));
}
var foundChoice = results[0].Resolution;
switch (OutputFormat.GetValue(dc.State))
{
case ChoiceOutputFormat.Value:
default:
dc.State.SetValue(VALUE_PROPERTY, foundChoice.Value);
break;
case ChoiceOutputFormat.Index:
dc.State.SetValue(VALUE_PROPERTY, foundChoice.Index);
break;
}
}
return(Task.FromResult(InputState.Valid));
}