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                'use strict';
const functions = require('firebase-functions');
const {WebhookClient} = require('dialogflow-fulfillment');
const {Card, Suggestion} = require('dialogflow-fulfillment');
const nodemailer = require("nodemailer");

const transporter = nodemailer.createTransport({
  host: '',
  port: 465,
  secure: true,
    auth: {
        user: 'YOUR-EMAIL-ADDRESS',
        pass: 'EMAIL-APP-PASSWORD'

process.env.DEBUG = 'dialogflow:debug'; // enables lib debugging statements
exports.dialogflowFirebaseFulfillment = functions.https.onRequest((request, response) => {
  const agent = new WebhookClient({ request, response });
  console.log('Dialogflow Request headers: ' + JSON.stringify(request.headers));
  console.log('Dialogflow Request body: ' + JSON.stringify(request.body));
  function welcome(agent) {
    agent.add(`Hi! Would you like to give us your personal/private information? :)`);
    agent.add(`I'm sorry, can you try again?`);
  function fallback(agent) {
   agent.add(`I didn't understand`);
   agent.add(`I'm sorry, can you try again?`);
 function sendEmail(agent) {
   const { name, email, phone, color, country } = agent.parameters;
    const mailOptions = {
           from: "YOUR-EMAIL-ADDRESS", // sender address
           to: email, // list of receivers
           subject: "Email from Chatbot", // Subject line
           html: "<p><b>" + name + "</b> lives in <b>" + country + "</b> and their favorite color is <b>" + color + "</b>. You can reach them <b>" + phone + "</b> or by email at <b>" + email + "</b>.</p><br></br><p>Thank you for choosing this bot!</p> "
    transporter.sendMail(mailOptions, function (err, info) {
   agent.add(`Thanks! Now I'll toootally delete this information.`);

  // Run the proper function handler based on the matched Dialogflow intent name
  let intentMap = new Map();
  intentMap.set('Default Welcome Intent', welcome);
  intentMap.set('Default Fallback Intent', fallback);
  intentMap.set('Send Email', sendEmail);
  // intentMap.set('your intent name here', googleAssistantHandler);