private async Task <DialogTurnResult> CallGenerateAnswerAsync(WaterfallStepContext stepContext, CancellationToken cancellationToken)
{
var qnaMakerOptions = new QnAMakerOptions
{
ScoreThreshold = DefaultThreshold,
Top = DefaultTopN,
Context = new QnARequestContext(),
QnAId = 0
};
var dialogOptions = GetDialogOptionsValue(stepContext);
// Getting options
if (dialogOptions.ContainsKey(QnAOptions))
{
qnaMakerOptions = dialogOptions[QnAOptions] as QnAMakerOptions;
qnaMakerOptions.ScoreThreshold = qnaMakerOptions?.ScoreThreshold ?? DefaultThreshold;
qnaMakerOptions.Top = DefaultTopN;
}
// Storing the context info
stepContext.Values[CurrentQuery] = stepContext.Context.Activity.Text;
// -Check if previous context is present, if yes then put it with the query
// -Check for id if query is present in reverse index.
if (!dialogOptions.ContainsKey(QnAContextData))
{
dialogOptions[QnAContextData] = new Dictionary <string, int>();
}
else
{
var previousContextData = dialogOptions[QnAContextData] as Dictionary <string, int>;
if (dialogOptions[PreviousQnAId] != null)
{
var previousQnAId = Convert.ToInt32(dialogOptions[PreviousQnAId]);
if (previousQnAId > 0)
{
qnaMakerOptions.Context = new QnARequestContext
{
PreviousQnAId = previousQnAId
};
qnaMakerOptions.QnAId = 0;
if (previousContextData.TryGetValue(stepContext.Context.Activity.Text.ToLower(), out var currentQnAId))
{
qnaMakerOptions.QnAId = currentQnAId;
}
}
}
}
// Calling QnAMaker to get response.
var response = await _qnaService.GetAnswersRawAsync(stepContext.Context, qnaMakerOptions).ConfigureAwait(false);
// Resetting previous query.
dialogOptions[PreviousQnAId] = -1;
stepContext.ActiveDialog.State["options"] = dialogOptions;
stepContext.Values[QnAData] = new List <QueryResult>(response.Answers);
var result = new List <QueryResult>();
if (response.Answers.Any())
{
result.Add(response.Answers.First());
}
stepContext.Values[QnAData] = result;
// If card is not shown, move to next step with top qna response.
return(await stepContext.NextAsync(result, cancellationToken).ConfigureAwait(false));
}