/// <summary>
/// Creates a response to Dialogflow
/// </summary>
/// <param name="intentName">Intent Name fired</param>
/// <param name="dialogflowRequest">The Dialogflow Request</param>
/// <returns>A Dialogflow Response</returns>
private static DialogflowResponse CreateResponse(string intentName, dynamic dialogflowRequest)
{
DialogflowResponse dialogflowResponse = null;
if (!string.IsNullOrWhiteSpace(intentName))
{
switch (intentName.ToLower())
{
case "welcome":
// Return a HTML response with the URL of your Interactive Canvas HTML Page
dialogflowResponse = CreateDialogflowHtmlResponse("ok, lets play! What colour box should I reveal, red, green or blue?", INTERACTIVECANVAS_URL);
break;
case "trigger_whatcolorbox":
// No colour specified, or colour already revealed so prompt user again
dialogflowResponse = CreateDialogflowHtmlResponse("What colour box should I reveal, red, green or blue?");
break;
case "trigger_correctchoice":
// User selected a colour and it had not been previously revealed so prompt for next choice
dialogflowResponse = CreateDialogflowHtmlResponse("Great choice! What colour box should I reveal next?");
break;
case "revealbox":
// Return a HTML response that triggers an action on the canvas + passes in an argument
// Not passing a message to user from here as 'session / game state' handled by HTML page
var updatedState = new UpdatedState()
{
Command = "revealbox", Arguments = new string[] { dialogflowRequest.queryResult.parameters.Color }
};
dialogflowResponse = CreateDialogflowHtmlResponse(null, null, updatedState);
break;
case "trigger_youwon":
// Trigger intent that has been triggered within the Interactive canvas
dialogflowResponse = CreateDialogflowHtmlResponse("you won the game, congratulations!", null, null, false);
break;
}
}
if (dialogflowResponse == null)
{
// If none of the above return the fallback intent
dialogflowResponse = CreateFallbackResponse();
}
return(dialogflowResponse);
}
/// <summary>
/// Create Dialogflow Html Response
/// </summary>
/// <param name="textMessageToUser">The Text Message To User</param>
/// <param name="interactiveCanvasUrl">The Interactive Canvas Url</param>
/// <param name="updatedState">The Updated State</param>
/// <param name="expectUserResponse">If we expect a user response</param>
/// <returns>Dialogflow Response</returns>
private static DialogflowResponse CreateDialogflowHtmlResponse(string textMessageToUser = null, string interactiveCanvasUrl = null, UpdatedState updatedState = null, bool expectUserResponse = true)
{
DialogflowResponse dialogflowResponse = CreateDialogflowBasicResponse(expectUserResponse, textMessageToUser);
// Regardless of whether there is anything in it, always return a HTML object in DF response
// to keep the interactive canvas open
var htmlResponseHolder = new HtmlResponseWrapper();
if (!string.IsNullOrWhiteSpace(interactiveCanvasUrl) || updatedState != null)
{
// Do we have an interactive canavas url? (To kick off interaction)
if (!string.IsNullOrWhiteSpace(interactiveCanvasUrl))
{
// Tag end of URL with a GUID when in Dev to force IFrame reload
htmlResponseHolder.HtmlResponse.Url = $"{interactiveCanvasUrl}?t={Guid.NewGuid().ToString()}";
}
// Is there a state update?
if (updatedState != null)
{
htmlResponseHolder.HtmlResponse.UpdatedState = updatedState;
}
}
dialogflowResponse.Payload.Google.RichResponse.Items.Add(htmlResponseHolder);
return(dialogflowResponse);
}