index-with-intents.js

/**
 * This sample demonstrates a simple skill built with the Amazon Alexa Skills Kit.
 * For additional samples, visit the Alexa Skills Kit developer documentation at
 * https://developer.amazon.com/appsandservices/solutions/alexa/alexa-skills-kit/getting-started-guide
 */

// Route the incoming request based on type (LaunchRequest, IntentRequest,
// etc.) The JSON body of the request is provided in the event parameter.

var Twit = require('twit');

var T = new Twit({
   consumer_key:         'IzTZJYD2anR6DCNwEAdTBBEba',
   consumer_secret:      'CpzKgQwZsNC6Rw6CmzxdfSDdJeMAB0Bx4fyzB0G9wggK5pSyYL',
   access_token:         '22908127-xJFfjfBkSR6hDCwGpfcXmouUIxJrqjLGOmOUbbasq',
   access_token_secret:  '4E8wyO55TGEVgAf7VL49mVQSUjAavDfmgKn0DUkHhBe2W'
});

var urlExpression = /[-a-zA-Z0-9@:%_\+.~#?&//=]{2,256}\.[a-z]{2,4}\b(\/[-a-zA-Z0-9@:%_\+.~#?&//=]*)?/gi;

exports.handler = function (event, context) {
    try {
        console.log("event.session.application.applicationId=" + event.session.application.applicationId);

        /**
         * Uncomment this if statement and populate with your skill's application ID to
         * prevent someone else from configuring a skill that sends requests to this function.
         */
        /*
        if (event.session.application.applicationId !== "amzn1.echo-sdk-ams.app.[unique-value-here]") {
             context.fail("Invalid Application ID");
         }
        */

        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;
    
    // Dispatch to your skill's intent handlers
    if ("MyColorIsIntent" === intentName) {
        
             T.get('statuses/home_timeline', {  count:5 }, function(err, data, response) {
                var twfeed="";
                for(var i = 0; i < data.length; i++) {
                    twfeed+=data[i].user.screen_name+" says "+data[i].text+".  ";
                }
                twfeed=twfeed.replace(urlExpression,'weburl')
                setColorInSession(intent, session, callback,twfeed);
            });
          
    } else if ("WhatsMyColorIntent" === intentName) {
        getColorFromSession(intent, session, callback);
    } else if ("HelpIntent" === intentName) {
        getWelcomeResponse(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
}

// --------------- Functions that control the skill's behavior -----------------------

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));
}

/**
 * Sets the color in the session and prepares the speech to reply to the user.
 */
function setColorInSession(intent, session, callback,twfeed) {
    var cardTitle = intent.name;
    var favoriteColorSlot = intent.slots.Color;
    var repromptText = "";
    var sessionAttributes = {};
    var shouldEndSession = false;
    var speechOutput = "";

    if (favoriteColorSlot) {
        favoriteColor = favoriteColorSlot.value;
        sessionAttributes = createFavoriteColorAttributes(favoriteColor);
        //speechOutput = "I now know your favorite color is " + favoriteColor + ". You can ask me "
        //        + "your favorite color by saying, what's my favorite color?";
        
        speechOutput=twfeed;
        speechOutput+="Modi government releases socio-economic caste census for better policy-making";
        repromptText = "You can ask me your favorite color by saying, what's my favorite color?";
    } else {
        speechOutput = "I'm not sure what your favorite color is, please try again";
        repromptText = "I'm not sure what your favorite color is, you can tell me your "
                + "favorite color by saying, my favorite color is red";
    }

    callback(sessionAttributes,
             buildSpeechletResponse(cardTitle, speechOutput, repromptText, shouldEndSession));
}

function createFavoriteColorAttributes(favoriteColor) {
    return {
        favoriteColor: favoriteColor
    };
}

function getColorFromSession(intent, session, callback) {
    var cardTitle = intent.name;
    var favoriteColor;
    var repromptText = null;
    var sessionAttributes = {};
    var shouldEndSession = false;
    var speechOutput = "";

    if(session.attributes) {
        favoriteColor = session.attributes.favoriteColor;
    }

    if(favoriteColor) {
        speechOutput = "Your favorite color is " + favoriteColor + ", goodbye";
        shouldEndSession = true;
    }
    else {
        speechOutput = "I'm not sure what your favorite color is, you can say, my favorite color "
                + " is red";
    }

    // Setting repromptText to null signifies that we do not want to reprompt the user.
    // If the user does not respond or says something that is not understood, the session
    // will end.
    callback(sessionAttributes,
             buildSpeechletResponse(intent.name, speechOutput, repromptText, shouldEndSession));
}

// --------------- Helpers that build all of the responses -----------------------

function buildSpeechletResponse(title, output, repromptText, shouldEndSession) {
    return {
        outputSpeech: {
            type: "PlainText",
            text: output
        },
        card: {
            type: "Simple",
            title: "SessionSpeechlet - " + title,
            content: "SessionSpeechlet - " + output
        },
        reprompt: {
            outputSpeech: {
                type: "PlainText",
                text: repromptText
            }
        },
        shouldEndSession: shouldEndSession
    }
}

function buildResponse(sessionAttributes, speechletResponse) {
    return {
        version: "1.0",
        sessionAttributes: sessionAttributes,
        response: speechletResponse
    }
}