var Onfido = require('onfido');

var defaultClient = Onfido.ApiClient.instance;

// Configure API key authorization: Token
var Token = defaultClient.authentications['Token'];
Token.apiKey = 'token=' + 'YOUR API KEY';
Token.apiKeyPrefix = 'Token';

var api = new Onfido.DefaultApi();

// setting applicant details
var applicant = new Onfido.Applicant();
applicant.first_name = 'John';
applicant.last_name = 'Smith';
applicant.dob = new Date('1980-01-22');
applicant.country = 'GBR';

var address = new Onfido.Address();
address.building_number = '100';
address.street = 'Main Street';
address.town = 'London';
address.postcode = 'SW4 6EH';
address.country = 'GBR';

applicant.addresses = [address];

// setting check request details
var check = new Onfido.CheckCreationRequest();
check.type = 'express';

var report = new Onfido.Report();
report.name = 'identity';

check.reports = [report];

var createApplicantCallback = function(error, data, response) {
  if (error) {
    console.error(error.response.body);
  } else {
    var applicantId = data.id;
    api.createCheck(applicantId, {'data': check}, createCheckCallback);
  }
};

var createCheckCallback = function(error, data, response) {
  if (error) {
    console.error(error.response.body);
  } else {
    console.log(data);
  }
};

api.createApplicant({'data': applicant}, createApplicantCallback);