//uses LUIS to understand user query inteligently, and respond appropriately
private async Task <Activity> NaturalInteractionHandler(Activity message)
{
if ((message.Text.Trim().ToLower() ?? "") == "")
{
return(message.CreateReply("Error: Message type unsupported"));
}
LUISHandler.LUISQueryResult LUISResult = await LUISHandler.HandleQuery(message.Text);
switch (LUISResult.responseType)
{
case LUISHandler.ResponseType.ExchangeRate:
return(await ExchangeRateHandler.HandleExchangeRateMessage(message, LUISResult));
case LUISHandler.ResponseType.Logout:
return(await FacebookHandler.LogoutHandler(message));
case LUISHandler.ResponseType.None:
return(await UnknownHandler(message));
case LUISHandler.ResponseType.AccountBalance:
return(await BankHandler.HandleBalance(message));
case LUISHandler.ResponseType.MakePayment:
return(await BankHandler.HandleTransaction(message, LUISResult));
case LUISHandler.ResponseType.TransactionHistory:
return(await BankHandler.HandleHistory(message));
default:
return(message.CreateReply("Error: Unimplemented"));
}
}
private static List <string> RatesFromLUIS(LUISHandler.LUISQueryResult LUISResult)
{
List <string> Rates = new List <string>();
if (LUISResult.parameters.ContainsKey("SourceRate"))
{
Rates.Add(LUISResult.parameters["SourceRate"]);
}
if (LUISResult.parameters.ContainsKey("DestinationRate"))
{
Rates.Add(LUISResult.parameters["DestinationRate"]);
}
return(Rates);
}
public static async Task <Activity> HandleExchangeRateMessage(Activity message, LUISHandler.LUISQueryResult LUISResult)
{
try
{
//figure out conversions, if one rate given, try the other one as first nzd, then usd.
//ignoring destination/source for simplicity, will report rate both ways
List <string> givenCodes = RatesFromLUIS(LUISResult).Union(new List <string> {
"NZD", "USD"
}, StringComparer.OrdinalIgnoreCase).Take(2).ToList();
//exact rates arent neccesarily inverses...
double FirstToSecond = await ExchangeRateFromTo(givenCodes[0], givenCodes[1]);
double SecondToFirst = await ExchangeRateFromTo(givenCodes[1], givenCodes[0]);
string reply = string.Format("Exchange rate from {0} to {1} is {2:F4} (Rate from {1} to {0} is {3:F4})",
givenCodes[0].ToUpper(), givenCodes[1].ToUpper(), FirstToSecond, SecondToFirst);
return(message.CreateReply(reply));
}
catch (KeyNotFoundException)
{
return(message.CreateReply("Could not find exchange rate"));
}
}