Programatically Invoking LUIS Outside the Message Controler - frameworks

Question

I'm writting a bot application that uses a Prompt Dialog to interact with users.
The idea here is when a user selects a certain option a message should be sent to LUIS that will be processing the request via ML.
Thought about two ways to get it done.
1 - Invoke LUIS directly
2 - Simulate a user entry to make sure the message would pass by the Message Controller and finally the Root Dialog which will be making a LUIS call
Makes sense?
I've tried something like this but it didn't work.
public virtual async Task ChoiceReceivedAsync_MainMenuOption(IDialogContext context, IAwaitable<MainMenuOption> activity)
{
...
IMessageActivity message = Activity.CreateMessageActivity();
message.Text = "Como e a seguranca da escola?";
message.TextFormat = "plain";
message.Locale = "en-Us";
var luisAttributes = new LuisModelAttribute(BellaMain.GlobalVariable.LuisModelID, BellaMain.GlobalVariable.LuisSubscriptionKey);
var luisService = new LuisService(luisAttributes);
await Conversation.SendAsync(message, () => new Dialogs.RootDialog(luisService));
}
Any ideas?
Thanks

Answer 1

Trying to call LUIS by mocking up a new Activity to send to the bot is not recommended.
Instead you should call LUIS through a simple request using an HttpClient.
Here is a sample from the LUIS Endpoint API:
Copy-pasted example:
using System;
using System.Net.Http.Headers;
using System.Text;
using System.Net.Http;
using System.Web;
namespace CSHttpClientSample
{
static class Program
{
static void Main()
{
MakeRequest();
Console.WriteLine("Hit ENTER to exit...");
Console.ReadLine();
}
static async void MakeRequest()
{
var client = new HttpClient();
var queryString = HttpUtility.ParseQueryString(string.Empty);
// Request headers
client.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key", "{subscription key}");
// Request parameters
queryString["timezoneOffset"] = "{number}";
queryString["verbose"] = "{boolean}";
queryString["spellCheck"] = "{boolean}";
queryString["staging"] = "{boolean}";
queryString["bing-spell-check-subscription-key"] = "{string}";
queryString["log"] = "{boolean}";
var uri = "https://westus.api.cognitive.microsoft.com/luis/v2.0/apps/{appId}?q={q}&" + queryString;
var response = await client.GetAsync(uri);
}
}
}