ImageSearch.js

'use strict';
require('dotenv').config()
let https = require('https');
let subscriptionKey = process.env.BING_SEARCH;

let host = 'api.cognitive.microsoft.com';
let path = '/bing/v7.0/images/search';

let totalImages = 10;

let bing_image_search = function (search, callback) {
  let request_params = {
        method : 'GET',
        hostname : host,
        path : path + '?q=' + encodeURIComponent(search) + "&count=" + totalImages,
        headers : {
            'Ocp-Apim-Subscription-Key' : subscriptionKey,
        }
    };

  let req = https.request(request_params, function (response) {
    let body = '';
    response.on('data', function (d) {
        body += d;
    });
    response.on('end', function () {
        body = JSON.parse(body);
        callback(body);
    });
    response.on('error', function (e) {
        console.log('Error: ' + e.message);
    });
  });

  req.end();
}

function getRandomInt(max) {
  return Math.floor(Math.random() * Math.floor(max));
}

function searchLyrics(lyrics, callback) {
  var count = 0;
  lyrics.documents.forEach (line => {
    line["urls"] = {};
    line.keyPhrases.forEach (word => {
      var random = getRandomInt(totalImages);
      bing_image_search(word, (result) => {
        let url = result.value[random].thumbnailUrl;
        line.urls[word] =  url;
      });
    });
    count++;
  });

  setTimeout(() => {
    callback(lyrics)
  }, count*1000);
}

/*searchLyrics(ex, (finalLyrics) => {
  console.log(JSON.stringify(finalLyrics, null, 2));
}); */

module.exports = {
	getImages: searchlyrics
};