private AmazonIntent ValidateIfRequestIsComplete(ref AmazonRequest request, ref AmazonResponse response)
{
AmazonIntent intent = ((AmazonIntentRequest)request.request).intent;
if (!intent.name.Contains("Incomplete") && !intent.name.Contains("FollowUp"))
{
intent.RemoveNullValueSlots();
List <RequiredSlotWithPrompt> reqSlots = siteSettings.FindRequiredSlotsByIntent(intent.name);
if (reqSlots != null)
{
intent.SortSlots(reqSlots);
}
return(intent);
}
else
{
RequiredSlotWithPrompt slWithPrompt = DetermineNextMissingSlot(ref request, ref response);
if (slWithPrompt != null)
{
response.response.outputSpeech.text = "OK. " + slWithPrompt.VoicePrompt;
response.response.shouldEndSession = false;
}
else
{
return(intent);
}
}
return(null);
}
public RequiredSlotWithPrompt CreateAttributesFromSlots(Dictionary <string, AmazonSlot> slots, List <RequiredSlotWithPrompt> reqSlots)
{
bool nextSlotFound = false;
RequiredSlotWithPrompt nextMissingSlot = null;
sessionAttributes = new Dictionary <string, object>();
foreach (KeyValuePair <string, AmazonSlot> slot in slots)
{
if (slot.Value.name.StartsWith("PAR"))
{
sessionAttributes.Add(slot.Value.name, slot.Value.value);
if (slot.Value.value == null && !nextSlotFound)
{
sessionAttributes.Add("NextSlot", AmazonSession.CreateNextSlotString(slot.Value.name));
foreach (RequiredSlotWithPrompt sl in reqSlots)
{
if (sl.RequiredSlot == slot.Value.name)
{
nextMissingSlot = sl;
}
}
nextSlotFound = true;
}
}
else
{
sessionAttributes.Add(slot.Value.name, slot.Value.value);
}
}
return(nextMissingSlot);
}
private RequiredSlotWithPrompt DetermineNextMissingSlot(ref AmazonRequest request, ref AmazonResponse response)
{
AmazonIntent intent = ((AmazonIntentRequest)request.request).intent;
//First we determine the list of required slots
//We also need to remove the suffix
List <RequiredSlotWithPrompt> reqSlots = siteSettings.FindRequiredSlotsByIntent(intent.name);
//This is an incomplete request - i.e. first one issued
//It will tell us all the other parameters we need to determine
//First we add them all to session attributes on the response
if (intent.name.Contains("Incomplete"))
{
//Slots seem to come in a completely random order so we need to arrange them before passing them
//on
intent.SortSlots(reqSlots);
return(response.CreateAttributesFromSlots(intent.slots, reqSlots));
}
//This is a follow up request so will come with the value for next parameter(s)
if (intent.name.Contains("FollowUp"))
{
foreach (KeyValuePair <string, AmazonSlot> kv in intent.slots)
{
string searchStr = kv.Key.Insert(3, request.session.attributes["NextSlot"].ToString());
if (request.session.attributes[searchStr] == null)
{
request.session.attributes[searchStr] = kv.Value.value;
}
}
}
//Now we need to sort the session attributes as it appears Amazon randomizes them again :(
request.session.SortSessionAttributes(reqSlots);
//Check if all parameters are now present
RequiredSlotWithPrompt missingSlot = request.session.CheckIfAllSlotsArePresent(reqSlots);
if (missingSlot != null)
{
response.CopySessionAttributesFromRequest(request);
return(missingSlot);
}
//First we need to combine all the currently known slots from session
List <AmazonSlot> slotsPresent = request.session.ConvertSessionAttributesToSlots();
//We will replace slots in the main intent object witht the slots we found
intent.ReplaceSlots(slotsPresent);
//Now we need to sort them in the order in which they are defined in the configuration file
intent.SortSlots(reqSlots);
intent.name.Remove(intent.name.IndexOf("FollowUp"));
return(null);
}
