const {google} = require('googleapis');
const discoveryDoc = '/path/to/your/discovery.json';
const key = require('/path/to/your/key.json');
const jwtClient = new google.auth.JWT(key.client_email, null, key.private_key, ["https://www.googleapis.com/auth/jobs"], null);

var jobServicePromise = google.discoverAPI(discoveryDoc);
jobServicePromise.then(function(jobService){

    jwtClient.authorize(function(err, tokens) {
        if (err) {
            console.log(err);
            return;
        }

        var searchJobsRequest = {
            "filters": {
                "query": "software"
            },
            "offset": 5,
            "pageSize": 5
        }

        jobService.jobs.search({ auth: jwtClient, resource: searchJobsRequest }, function (err, result) {
          if (err) {
            console.error('Failed to search jobs! ' + err);
            throw err;
          }
          console.log("############# POST sample #############");
          console.log('result:', result.data);
        });
    });

    jwtClient.authorize(function(err, tokens) {
        if (err) {
            console.log(err);
            return;
        }

        jobService.companies.list({ auth: jwtClient }, function (err, result) {
            if (err) {
                console.error('Failed to retrieve companies! ' + err);
                throw err;
            }
            console.log("############# GET sample #############");
            console.log('Companies:', result.data);
        });
    });
});