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This is the code for the Amazon Echo app for APIstrat Austin conference. Using the app you can ask for the schedule of the conference.
'use strict';
/**
* Author: Nicolas Grenié, @pisoung
* Date: November 2015
* This is the code for the Amazon Echo app for APIstrat Austin conference. Using the app you can ask for the schedule of the conference.
* It uses APIstrat API developed by Kin Lane
*/
require('jaws-core-js/env');
var request = require('request');
var _ = require('underscore');
var Q = require('q');
var moment = require('moment');
module.exports.handler = function (event, context) {
try {
console.log("event.session.application.applicationId=" + event.session.application.applicationId);
if (event.session.new) {
onSessionStarted({requestId: event.request.requestId}, event.session);
}
if (event.request.type === "LaunchRequest") {
onLaunch(event.request,
event.session,
function callback(sessionAttributes, speechletResponse) {
context.succeed(buildResponse(sessionAttributes, speechletResponse));
});
} else if (event.request.type === "IntentRequest") {
onIntent(event.request,
event.session,
function callback(sessionAttributes, speechletResponse) {
context.succeed(buildResponse(sessionAttributes, speechletResponse));
});
} else if (event.request.type === "SessionEndedRequest") {
onSessionEnded(event.request, event.session);
context.succeed();
}
} catch (e) {
context.fail("Exception: " + e);
}
};
/**
* Called when the session starts.
*/
function onSessionStarted(sessionStartedRequest, session) {
console.log("onSessionStarted requestId=" + sessionStartedRequest.requestId +
", sessionId=" + session.sessionId);
}
/**
* Called when the user launches the skill without specifying what they want.
*/
function onLaunch(launchRequest, session, callback) {
console.log("onLaunch requestId=" + launchRequest.requestId +
", sessionId=" + session.sessionId);
// Dispatch to your skill's launch.
getWelcomeResponse(callback);
}
/**
* Called when the user specifies an intent for this skill.
*/
function onIntent(intentRequest, session, callback) {
console.log("onIntent requestId=" + intentRequest.requestId +
", sessionId=" + session.sessionId);
var intent = intentRequest.intent,
intentName = intentRequest.intent.name;
console.log("INTENT",intentName);
// Dispatch to your skill's intent handlers
if ("WhenIsSpeakerTalkingIntent" === intentName) {
getSpeakerTalkingSession(intent,callback);
} else if("WhatsNowIntent"===intentName){
getWhatsNowProgram(callback)
}else if("WhenIsSessionIntent"===intentName){
getWhenIsSession(intent,callback)
} else {
throw "Invalid intent";
}
}
/**
* Called when the user ends the session.
* Is not called when the skill returns shouldEndSession=true.
*/
function onSessionEnded(sessionEndedRequest, session) {
console.log("onSessionEnded requestId=" + sessionEndedRequest.requestId +
", sessionId=" + session.sessionId);
// Add cleanup logic here
}
// --------------- Function to get when is a specific session-----------------------
function getWhenIsSession(intent,callback){
console.log(intent);
var sessionName = intent.slots.SessionName.value;
var cardTitle = "Info about session "+sessionName;
var repromptText = "";
var cardContent = "";
var speechOutput = "";
var sessionAttributes = {};
var shouldEndSession = true;
var URL = "http://api.austin2015.apistrat.com/schedule/search/";
URL +="?query="+sessionName;
console.log(URL);
request.get(URL,function(err,resp,body){
if(err && err.code == 'ETIMEDOUT'){
speechOutput += "<s>Oh no, looks like the APIstrat API is down.</s>"
speechOutput += "<s>You can now find Kin Lane and complain about it</s>"
speechOutput += "</speak>"
callback(sessionAttributes,
buildSpeechletResponse(cardTitle, speechOutput, cardContent, repromptText, shouldEndSession));
}
if(resp){
var body = JSON.parse(body)
console.log(body);
speechOutput = "<speak>"
if(body.length ==0){ //no result
speechOutput += "<s>I am sorry I could not find info about this session in the program</s>"
speechOutput += "</speak>"
cardContent = "Could not find any information regarding this session in the program"
callback(sessionAttributes,
buildSpeechletResponse(cardTitle, speechOutput, cardContent, repromptText, shouldEndSession));
}else{ //speaker found
var sessions = body;
speechOutput += "<s>I've found "+sessions.length+" sessions for the criteria: "+sessionName+"</s>";
cardContent = sessions.length+" sessions found for the criteria: "+sessionName
_.each(sessions,function(s){
speechOutput += "<s>"+s.title+" in "+s.location + " on "+moment(s.start_time).calendar()+"</s>"
speechOutput += "<s>With ";
var nbSpeakers = s.speakers.length;
_.each(s.speakers, function(speaker,index){
speechOutput += speaker.name +" from "+speaker.company;
if(index < nbSpeakers -1)
speechOutput += " and ";
}) //end each on speakers
speechOutput +="</s>"
}) //end each on sessions
speechOutput += "</speak>"
console.log(speechOutput);
callback(sessionAttributes,
buildSpeechletResponse(cardTitle, speechOutput, cardContent, repromptText, shouldEndSession));
} //end of if
}
})
}
// --------------- Function to find info about speaker -----------------------
function getSpeakerTalkingSession(intent,callback){
var cardTitle = "Info about speaker "+intent.slots.SpeakerName.value;
var repromptText = "";
var cardContent = "";
var speechOutput = "";
var sessionAttributes = {};
var shouldEndSession = true;
var URL = "http://api.austin2015.apistrat.com/speakers/";
URL +="?query="+intent.slots.SpeakerName.value
console.log(URL);
request.get(URL, {timeout: 1500},function(err,resp,body){
console.log("ERR",err);
if(err && err.code == 'ETIMEDOUT'){
speechOutput += "<s>Oh no, looks like the APIstrat API is down.</s>"
speechOutput += "<s>You can now find Kin Lane and complain about it</s>"
speechOutput += "</speak>"
callback(sessionAttributes,
buildSpeechletResponse(cardTitle, speechOutput, cardContent, repromptText, shouldEndSession));
}
if(resp){
var body = JSON.parse(body)
console.log(body);
speechOutput = "<speak>"
if(body.length ==0){ //no result
speechOutput += "<s>I am sorry I could not find info about this speaker</s>"
speechOutput += "</speak>"
cardContent = "Could not find any information regarding this speaker"
callback(sessionAttributes,
buildSpeechletResponse(cardTitle, speechOutput, cardContent, repromptText, shouldEndSession));
}else{ //speaker found
var speaker = body[0];
speechOutput += "<s>I've found "+speaker.sessions.length+" sessions for "+speaker.name+"</s>";
cardContent = speaker.sessions.length+" sessions for "+speaker.name+" "
_.each(speaker.sessions,function(s){
speechOutput += "<s>"+s.title+" in "+s.location + " on "+moment(s.start_time).calendar()+"</s>"
cardContent += s.title+" in "+s.location + " on "+moment(s.start_time).calendar()+" "
});
speechOutput += "</speak>"
callback(sessionAttributes,
buildSpeechletResponse(cardTitle, speechOutput, cardContent, repromptText, shouldEndSession));
}
}
})
}
// --------------- Function to get what's happening now -----------------------
function getWhatsNowProgram(callback){
var cardTitle = "APIstrat";
var repromptText = "";
var cardContent = "";
var speechOutput = "";
var sessionAttributes = {};
var shouldEndSession = true;
var URL = "http://api.austin2015.apistrat.com/schedule/now/";
request.get(URL,function(err,resp,body){
if(err && err.code == 'ETIMEDOUT'){
speechOutput += "<s>Oh no, looks like the APIstrat API is down.</s>"
speechOutput += "<s>You can now find Kin Lane and complain about it</s>"
speechOutput += "</speak>"
callback(sessionAttributes,
buildSpeechletResponse(cardTitle, speechOutput, cardContent, repromptText, shouldEndSession));
}
if(resp){
var body = JSON.parse(body)
speechOutput = "<speak>"
if(body.length ==0){
speechOutput += "<s>Sadly nothing is happening now at APIstrat</s>"
speechOutput += "</speak>"
cardContent = "Nothing happening at the moment"
}else if(body.length == 1){
var event = body[0]
speechOutput += "<s>There is "+event.title+" happening now on "+event.location+" by "+event.speakers[0].name+" from "+event.speakers[0].company+"</s>";
speechOutput += "</speak>"
cardContent = "There is "+event.title+"happening now on "+event.location+" by "+event.speakers[0].name+" from "+event.speakers[0].company
//TODO if multiple speakers
}else{
}
callback(sessionAttributes,
buildSpeechletResponse(cardTitle, speechOutput,cardContent, repromptText, shouldEndSession));
}
}) //end request.get
}
function getWelcomeResponse(callback) {
// If we wanted to initialize the session to have some attributes we could add those here.
var sessionAttributes = {};
var cardTitle = "Welcome";
var speechOutput = "Welcome to the Alexa Skills Kit sample, " +
"Please tell me your favorite color by saying, " +
"my favorite color is red";
// If the user either does not reply to the welcome message or says something that is not
// understood, they will be prompted again with this text.
var repromptText = "Please tell me your favorite color by saying, " +
"my favorite color is red";
var shouldEndSession = false;
callback(sessionAttributes,
buildSpeechletResponse(cardTitle, speechOutput, repromptText, shouldEndSession));
}
// --------------- Helpers that build all of the responses -----------------------
function buildSpeechletResponse(title, speechOutput, cardContent, repromptText, shouldEndSession) {
return {
outputSpeech: {
type: "SSML",
ssml: speechOutput,
},
card: {
type: "Simple",
title: "APIstrat - " + title,
content: "APIstrat - " + cardContent
},
reprompt: {
outputSpeech: {
type: "PlainText",
text: repromptText
}
},
shouldEndSession: shouldEndSession
};
}
function buildResponse(sessionAttributes, speechletResponse) {
return {
version: "1.0",
sessionAttributes: sessionAttributes,
response: speechletResponse
};
}
@rajava

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@rajava rajava commented Aug 26, 2017

How did this code work? isn't there a problem in line 275 shouldEndSession: shouldEndSession

I guess this causes an Alexa custom skill (nodejs) to always timeout and not end at the wish of the user or naturally when session is requested to end.

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