Dialogflow Fulfillment Library

index.js

'use strict';
 
const functions = require('firebase-functions');
const { WebhookClient, Card, Suggestion } = require('dialogflow-fulfillment');
 
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(`Welcome to my agent!`);
  }
 
  function fallback(agent) {
    agent.add(`I didn't understand`);
    agent.add(`I'm sorry, can you try again?`);
  }

  function yourFunctionHandler(agent) {
    agent.add(`Ok. Buying product:`);
    console.log(agent.parameters);
    agent.add(new Card({
        title: agent.parameters.producttype,
        imageUrl: 'https://dummyimage.com/300x200/000/fff',
        text: `This is the body text of a card.  You can even use line\n  breaks and emoji! 💁`,
        buttonText: 'This is a button',
        buttonUrl: 'https://console.dialogflow.com/'
      })
    );
    agent.add(new Suggestion(`Quick Reply`));
    agent.add(new Suggestion(`Suggestion`));
    agent.context.set({ name: 'gamestore-picked', lifespan: 2, parameters: { gameStore: 'DialogflowGameStore' }});
  }

  // 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('Buy product regex', yourFunctionHandler);
  agent.handleRequest(intentMap);
});

package.json

{
  "name": "dialogflowFirebaseFulfillment",
  "description": "This is the default fulfillment for a Dialogflow agents using Cloud Functions for Firebase",
  "version": "0.0.1",
  "private": true,
  "license": "Apache Version 2.0",
  "author": "Lee Boonstra",
  "engines": {
    "node": "8"
  },
  "scripts": {
    "start": "firebase serve --only functions:dialogflowFirebaseFulfillment",
    "deploy": "firebase deploy --only functions:dialogflowFirebaseFulfillment"
  },
  "dependencies": {
    "actions-on-google": "^2.12.0",
    "firebase-admin": "^5.13.1",
    "firebase-functions": "^2.0.2",
    "dialogflow-fulfillment": "^0.6.1"
  }
}