/// <summary>
/// Once the user has made a selection then direct the user to the relevant dialog
/// </summary>
/// <param name="context"></param>
/// <param name="argument"></param>
/// <returns></returns>
private async Task UserMadeSelection(IDialogContext context, IAwaitable <Triggers> argument)
{
// Await the user's interaction
var arg = await argument;
switch (arg)
{
case Triggers.Root:
await context.PostAsync("Returning to the root menu");
this.GiveUserChoices(context);
break;
case Triggers.Calculator:
await context.PostAsync("Welcome to the calculator");
await context.PostAsync("Please post your calculation in the form X + Y");
var calculatorDialog = DialogFactory.MakeInstance <CalculatorDialog>();
context.Wait(calculatorDialog.PerformCalculation);
break;
default:
break;
}
}
/// <summary>
/// POST: api/Messages
/// Receive a message from a user and reply to it
/// </summary>
public async Task <HttpResponseMessage> Post([FromBody] Activity activity)
{
if (activity.Type == ActivityTypes.Message)
{
if (activity.Text == Triggers.Calculator.ToString())
{
await Conversation.SendAsync(activity, () => DialogFactory.MakeInstance <CalculatorDialog>());
}
else
{
await Conversation.SendAsync(activity, () => DialogFactory.MakeInstance <RootDialog>());
}
}
else
{
HandleSystemMessage(activity);
}
var response = Request.CreateResponse(HttpStatusCode.OK);
return(response);
}
/// <summary>
/// Allow the user to perform a calculation
/// </summary>
/// <param name="context"></param>
/// <param name="argument"></param>
/// <returns></returns>
public async Task PerformCalculation(IDialogContext context, IAwaitable <object> argument)
{
// Await the user's interaction
var activity = await argument as Activity;
// Split the data by spaces
var data = activity.Text.Split(' ');
// If the user has added a + symbol then they want to perform an addition
// TODO: Parse the data using regex to create a pattern for performing more complicated calculations
if (activity.Text.Contains("+"))
{
var count = 0;
foreach (var item in data)
{
int num;
// If the current item is a number then perform a calculation
if (int.TryParse(item, out num))
{
count += num;
}
}
// Send the calculation back to the user
await context.PostAsync($"I calculated that as: {count}");
// Add this method back to the call stack for the user to make another calculation
context.Wait(this.PerformCalculation);
}
// If the user tries to do something that isn't supported in this Dialog then display the Choices available
else
{
await context.PostAsync("I'm sorry. I haven't been taught how to do that yet. I will return you to the main menu.");
DialogFactory.MakeInstance <RootDialog>().GiveUserChoices(context);
}
}
