carousel code for google assistant

'use strict';

const express = require('express');
const bodyParser = require('body-parser');
const NodeCache = require("node-cache");
var HashMap = require('hashmap');
//var courses = require('./index');
var chromeCast = require('./test.js');
const opn = require('opn');
let ActionsSdkApp = require('actions-on-google').ActionsSdkApp;


process.env.DEBUG = 'actions-on-google:*';
const App = require('actions-on-google').DialogflowApp;
const {
    WebhookClient,
    Payload
} = require('dialogflow-fulfillment');

var ytc = require('./testy2');
var search = require('./search');

const restService = express();
restService.use(bodyParser.json());
const {
    BasicCard
} = require('actions-on-google') //use v2 alpha

const DialogflowApp = require('actions-on-google').DialogflowApp; // Google Assistant helper library

const googleAssistantRequest = 'google'; // Constant to identify Google Assistant requests

restService.post('/look', function(request, response) {
    console.log('look request');
    start(request, response);
});

restService.listen((process.env.PORT || 4000), function() {
    console.log("Server listening 4000");
});


// Construct rich response for Google Assistant
const app = new DialogflowApp();

function start(request, response) {
    // An action is a string used to identify what needs to be done in fulfillment
    let action = request.body.result.action; // https://dialogflow.com/docs/actions-and-parameters

    const agent = new WebhookClient({
        request,
        response
    });


    const userQuery = request.body.result.resolvedQuery;
    console.log(userQuery);
    // Parameters are any entites that Dialogflow has extracted from the request.
    const parameters = request.body.result.parameters; // https://dialogflow.com/docs/actions-and-parameters
    var params = parameters;
    var sessionID = request.body.sessionId;

    // getting meta data of the response
    const metadata = request.body.result.metadata;
    const curentIntentName = metadata.intentName;

    // Contexts are objects used to track and store conversation state
    const inputContexts = request.body.result.contexts; // https://dialogflow.com/docs/contexts

    // Get the request source (Google Assistant, Slack, API, etc) and initialize DialogflowApp
    const requestSource = (request.body.originalRequest) ? request.body.originalRequest.source : undefined;
    const app = new DialogflowApp({
        request: request,
        response: response
    });

    // Create handlers for Dialogflow actions as well as a 'default' handler
    const actionHandlers = {
        // The default welcome intent has been matched, welcome the user (https://dialogflow.com/docs/events#default_welcome_intent)
        'input.welcome': () => {
            sendResponse('Hello, Welcome to enterprise tiger BOT!'); // Send simple response to user
        },
        // The default fallback intent has been matched, try to recover (https://dialogflow.com/docs/intents#fallback_intents)
        'input.unknown': () => {
            let responseToUser = {
                googleRichResponse: multiRichResponse, // Optional, uncomment to enable
                //googleOutputContexts: ['weather', 2, { ['city']: 'rome' }], // Optional, uncomment to enable
                speech: 'This message is from Dialogflow\'s Cloud Functions for Firebase editor!', // spoken response
                text: 'This is from Dialogflow\'s Cloud Functions for Firebase editor! :-)' // displayed response
            };
            sendGoogleResponse(responseToUser);
        },
        // Default handler for unknown or undefined actions
        'default': () => {
            // Use the Actions on Google lib to respond to Google requests; for other requests use JSON
            let responseToUser = {
                googleRichResponse: multiRichResponse, // Optional, uncomment to enable
                //googleOutputContexts: ['weather', 2, { ['city']: 'rome' }], // Optional, uncomment to enable
                speech: 'This message is from Dialogflow\'s Cloud Functions for Firebase editor!', // spoken response
                text: 'This is from Dialogflow\'s Cloud Functions for Firebase editor! :-)' // displayed response
            };
            sendGoogleResponse(responseToUser);
        },
        'question': () => {
            // search.findVideoAndTime(userQuery, function(err, videoId , starttime){
            //   console.log("videoId is " + videoId + " starttime is "+ starttime);
            //   if(startime-5 > 0){
            //     startime = startime -5;
            //   }
            //   ytc.youtubecast(videoId,startime);
            // });
            search.findVideoAndTime(userQuery, function(err, top3VideosDetails) {
                //var reply = videoResult(top3VideosDetails)

              //  console.log("top3 videoa details : \n\n"+ JSON.stringify(top3VideosDetails[0]) + " type \n "+ JSON.parse(top3VideosDetails[0]).title);
              //  var topvideoResult =  getGoogleRichRespo(top3VideosDetails);
              //  console.log("top : "+ topvideoResult);
              // const app = new ActionsSdkApp({request, response});
              // // carousel(app);
              //   let responseToUser = {
              //       googleRichResponse: cor, // Optional, uncomment to enable
              //       //googleOutputContexts: ['weather', 2, { ['city']: 'rome' }], // Optional, uncomment to enable
              //       speech: 'This message is from Dialogflow\'s Cloud Functions for Firebase editor!', // spoken response
              //       text: 'This is from Dialogflow\'s Cloud Functions for Firebase editor! :-)' // displayed response
              //   };


                //sendGoogleResponse(responseToUser);


            //    const app = new ActionsSdkApp({request, response});
                // app.ask({
                //   speech: 'Howdy! I can tell you fun facts about ' +
                //   'almost any number, like 42. What do you have in mind?',
                //   displayText: 'Howdy! I can tell you fun facts about almost any ' +
                //   'number. What do you have in mind?'
                // });

            });

            app.askWithCarousel('Alright! Here are a few things you can learn. Which sounds interesting?',
        // Build a carousel
        app.buildCarousel()
        // Add the first item to the carousel
        .addItems(app.buildOptionItem('MATH_AND_PRIME',
          ['math', 'math and prime', 'prime numbers', 'prime'])
          .setTitle('Math & prime numbers')
          .setDescription('42 is an abundant number because the sum of its ' +
            'proper divisors 54 is greater…')
          .setImage('http://example.com/math_and_prime.jpg', 'Math & prime numbers'))
        // Add the second item to the carousel
        .addItems(app.buildOptionItem('EGYPT',
          ['religion', 'egpyt', 'ancient egyptian'])
          .setTitle('Ancient Egyptian religion')
          .setDescription('42 gods who ruled on the fate of the dead in the ' +
            'afterworld. Throughout the under…')
          .setImage('http://example.com/egypt', 'Egypt')
        )
        // Add third item to the carousel
        .addItems(app.buildOptionItem('RECIPES',
          ['recipes', 'recipe', '42 recipes'])
          .setTitle('42 recipes with 42 ingredients')
          .setDescription('Here\'s a beautifully simple recipe that\'s full ' +
            'of flavor! All you need is some ginger and…')
          .setImage('http://example.com/recipe', 'Recipe')
        )
      );

        },
    };

    // If undefined or unknown action use the default handler
    if (!actionHandlers[action]) {
        action = 'default';
    }

    // Run the proper handler function to handle the request from Dialogflow
    actionHandlers[action]();

    // Function to send correctly formatted Google Assistant responses to Dialogflow which are then sent to the user
    function sendGoogleResponse(responseToUser) {
        if (typeof responseToUser === 'string') {
            app.ask(responseToUser); // Google Assistant response
        } else {
            // If speech or displayText is defined use it to respond
            let googleResponse = app.buildRichResponse().addSimpleResponse({
                speech: responseToUser.speech || responseToUser.displayText,
                displayText: responseToUser.displayText || responseToUser.speech
            });
            // Optional: Overwrite previous response with rich response
            if (responseToUser.googleRichResponse) {
                googleResponse = responseToUser.googleRichResponse;
            }
            // Optional: add contexts (https://dialogflow.com/docs/contexts)
            if (responseToUser.googleOutputContexts) {
                app.setContext(...responseToUser.googleOutputContexts);
            }
            console.log('Response to Dialogflow (AoG): ' + JSON.stringify(googleResponse));
            app.ask(googleResponse); // Send response to Dialogflow and Google Assistant
        }
    }

    // Function to send correctly formatted responses to Dialogflow which are then sent to the user
    function sendResponse(responseToUser) {
        // if the response is a string send it as a response to the user
        if (typeof responseToUser === 'string') {
            console.log("inside string if");
            let responseJson = {};
            responseJson.speech = responseToUser; // spoken response
            responseJson.displayText = responseToUser; // displayed response
            response.json(responseJson); // Send response to Dialogflow
        } else {
            console.log("inside non string else");
            // If the response to the user includes rich responses or contexts send them to Dialogflow
            let responseJson = {};

            // If speech or displayText is defined, use it to respond (if one isn't defined use the other's value)
            responseJson.speech = responseToUser.speech || responseToUser.displayText;
            responseJson.displayText = responseToUser.displayText || responseToUser.speech;
            responseJson.followupEvent = responseToUser.followupEvent;

            // Optional: add rich messages for integrations (https://dialogflow.com/docs/rich-messages)
            responseJson.data = responseToUser.richResponses;

            // Optional: add contexts (https://dialogflow.com/docs/contexts)
            responseJson.contextOut = responseToUser.outputContexts;
            console.log("outputjson : " + JSON.stringify(responseJson));
            response.json(responseJson); // Send response to Dialogflow

        }
    }
}

function videoResult(top3VideosDetails) {
    console.log("\n\ntesting REsult : " + top3VideosDetails + "\n\n legnth = " + top3VideosDetails.length);
    var replyText = '';
    for (var i = 0; i < top3VideosDetails.length; i++) {
        var obj = JSON.parse(top3VideosDetails[i]);
        console.log("\n obj is" + obj);
        replyText = replyText + " \n  \n " + (i + 1) + ". Title : " + obj.title + " \n  \n Snippet: " + obj.text + " \n  \n ";
    }
    //replyText =  'asdwdsaawdasdasdsadasdassdadashrtdfdkmrpadwasdasdasdasdasdsasdasdfsdfsdfsddfhuFDSFSLKEWKRMASKMFKDSLFzxzc'
    ytc.youtubecast('MZZPF9rXzes', 130);
    return replyText;
}


function getGoogleRichRespo(top3VideosDetails) {
    var query = ' on ';
      var googleRichResponse = null;
    if (top3VideosDetails.length == 1) {
      console.log("length is one");
         googleRichResponse = app.buildRichResponse()
            .addSimpleResponse('Result of Video Search  ')
            .addSuggestions(
                ['Play 1st', 'Play 2nd', 'Play 3rd'])
            // Create a basic card and add it to the rich response
            .addBasicCard(app.buildBasicCard("Snippet :" + JSON.parse(top3VideosDetails[0]).text)
                .setTitle(JSON.parse(top3VideosDetails[0]).title)
                .addButton('Play in youtube App', 'https://assistant.google.com/'))

    } else if (top3VideosDetails.length == 2) {
         console.log("length is 2");
       googleRichResponse = app.buildRichResponse()
          .addSimpleResponse('Result of Video Search  ')
          .addSuggestions(
              ['Play 1st', 'Play 2nd', 'Play 3rd'])
          // Create a basic card and add it to the rich response
          .addBasicCard(app.buildBasicCard("Snippet :" + JSON.parse(top3VideosDetails[0]).text)
              .setTitle(JSON.parse(top3VideosDetails[0]).title)
              .addButton('Play in youtube App', 'https://assistant.google.com/'))
          .addBasicCard(app.buildBasicCard("Snippet :" + JSON.parse(top3VideosDetails[1]).text)
              .setTitle(JSON.parse(top3VideosDetails[1].title))
              .addButton('Play in youtube App', 'https://www.youtube.com/'))

    } else if (top3VideosDetails.length == 3) {
      console.log("length is 3");
       googleRichResponse = app.buildRichResponse()
          .addSimpleResponse('Result of Video Search  ')
          .addSuggestions(
              ['Play 1st', 'Play 2nd', 'Play 3rd'])
          // Create a basic card and add it to the rich response
          .addBasicCard(app.buildBasicCard("Snippet :" + JSON.parse(top3VideosDetails[0]).text)
              .setTitle(JSON.parse(top3VideosDetails[0]).title)
              .addButton('Play in youtube App', 'https://assistant.google.com/'))
          .addBasicCard(app.buildBasicCard("Snippet :" + JSON.parse(top3VideosDetails[1]).text)
              .setTitle(JSON.parse(top3VideosDetails[1]).title)
              .addButton('Play in youtube App', 'https://www.youtube.com/'))
          .addBasicCard(app.buildBasicCard("Snippet :" + JSON.parse(top3VideosDetails[2]).text)
              .setTitle(JSON.parse(top3VideosDetails[2]).title)
              .addButton('Play in youtube App', 'https://www.youtube.com/'))

    }
console.log("return response "+ JSON.stringify(googleRichResponse));
    return googleRichResponse;
}

//
// const multiRichResponse = app.buildRichResponse()
//    .addSimpleResponse('Result of test  ')
//    .addBrowseCarousel(app.buildBrowseCarousel)



function carousel (app) {
  app.askWithCarousel('Alright! Here are a few things you can learn. Which sounds interesting?',
    // Build a carousel
    app.buildCarousel()
    // Add the first item to the carousel
    .addItems(app.buildOptionItem('MATH_AND_PRIME',
      ['math', 'math and prime', 'prime numbers', 'prime'])
      .setTitle('Math & prime numbers')
      .setDescription('42 is an abundant number because the sum of its ' +
        'proper divisors 54 is greater…')
      .setImage('http://example.com/math_and_prime.jpg', 'Math & prime numbers'))
    // Add the second item to the carousel
    .addItems(app.buildOptionItem('EGYPT',
      ['religion', 'egpyt', 'ancient egyptian'])
      .setTitle('Ancient Egyptian religion')
      .setDescription('42 gods who ruled on the fate of the dead in the ' +
        'afterworld. Throughout the under…')
      .setImage('http://example.com/egypt', 'Egypt')
    )
    // Add third item to the carousel
    .addItems(app.buildOptionItem('RECIPES',
      ['recipes', 'recipe', '42 recipes'])
      .setTitle('42 recipes with 42 ingredients')
      .setDescription('Here\'s a beautifully simple recipe that\'s full ' +
        'of flavor! All you need is some ginger and…')
      .setImage('http://example.com/recipe', 'Recipe')
    )
  );
}

function basicCard (request , response) {
  const app = new ActionsSdkApp({request, response});
  app.ask(app.buildRichResponse()
    // Create a basic card and add it to the rich response
    .addSimpleResponse('Math and prime numbers it is!')
    .addBasicCard(app.buildBasicCard('42 is an even composite number. It' +
      'is composed of three distinct prime numbers multiplied together. It' +
      'has a total of eight divisors. 42 is an abundant number, because the' +
      'sum of its proper divisors 54 is greater than itself. To count from' +
      '1 to 42 would take you about twenty-one…')
      .setTitle('Math & prime numbers')
      .addButton('Read more', 'https://example.google.com/mathandprimes')
      .setImage('https://example.google.com/42.png', 'Image alternate text')
      .setImageDisplay('CROPPED')
    )
  );
}