public ChatPageViewModel(MajaConversation majaConversation, SpeechRecognitionService service)
{
MajaConversation = majaConversation;
SpeechRecognitionService = service;
UserReplyCommand = new Command(SendUserReply);
service.HypothesisGenerated += Service_HypothesisGenerated;
}
private async void SendUserReply(object obj)
{
if (obj is IPossibleUserReply possibleUserReply)
{
await SpeechRecognitionService.Stop();
await MajaConversation.QueryMajaForAnswers(possibleUserReply.Value, possibleUserReply.Text);
}
}
public async void StartListening()
{
//TODO: cancel option with cancellationtoken
try
{
MajaConversation.MajaStatus = MajaListeningStatus.Listening;
var result = await SpeechRecognitionService.RecognizeAsync();
if (result == null)
{
return;
}
if (result.Confidence == SpeechRecognitionConfidence.Medium || result.Confidence == SpeechRecognitionConfidence.High)
{
await MajaConversation.QueryMajaForAnswers(result.Text, addMessage : false);
}
else if (!string.IsNullOrEmpty(result.Text))
{
MajaConversation.Messages.Add(new MajaConversationMessage("Das habe ich akustisch nicht verstanden, bitte sprich direkt in das Mikrofon"));
}
}
catch (OperationCanceledException)
{
//_speechCancellationTokenSource = null;
}
catch (Exception ex)
{
//_speechCancellationTokenSource = null;
if ((uint)ex.HResult == HResultPrivacyStatementDeclined)
{
// Show a UI link to the privacy settings.
SpeechRecognitionService.ShowMessage("Please restart the program, permission of microphone denied");
await Windows.System.Launcher.LaunchUriAsync(new Uri("ms-settings:privacy-speechtyping"));
}
else
{
MajaConversation.Messages.Add(new MajaConversationMessage("Es kam beim Zugriff auf das Mikrofon zu einem Fehler. Bitte versuche es erneut."));
}
}
if (MajaConversation.MajaStatus != MajaListeningStatus.Speaking)
{
MajaConversation.MajaStatus = MajaListeningStatus.Idle;
}
}
private void Service_HypothesisGenerated(object sender, SpeechRecognitionHypothesisGeneratedEventArgs e)
{
MajaConversation.SetUserText(e.Hypothesis.Text.ToLower());
}
