Fulfilment for musixmatch chatbot

index.js

// See https://github.com/dialogflow/dialogflow-fulfillment-nodejs
// for Dialogflow fulfillment library docs, samples, and to report issues
'use strict';
 
const functions = require('firebase-functions');
const { WebhookClient } = require('dialogflow-fulfillment');
const axios = require('axios');
 
process.env.DEBUG = 'dialogflow:debug'; // enables lib debugging statements
 
exports.dialogflowFirebaseFulfillment = functions.https.onRequest((request, response) => {
    const agent = new WebhookClient({ request, response });
        
    function callApi(url, body) {
        return axios({
            method: 'post',
            url: url,
            data: body,
        });
    }

    function fetchLyric(agent) {
        const apiUrl = 'url-de-tu-endpoint';
        const song = agent.parameters.song;
        const artist = agent.parameters.artist;
    
        return callApi(apiUrl, { song: song, artist: artist })
            .then(res => agent.add('La letra de la canción es: ' + String(res.data['lyrics_body'])));
    }

    
    let intentMap = new Map();
    intentMap.set('get-lyric', fetchLyric);
    agent.handleRequest(intentMap);
});