DocuSign NODE SDK Auth Code example for eSignature REST API

getAuthCode.js

const express = require('express');
const passport = require('passport');
const util = require('util')
var session = require('express-session');
var docusign = require('./src/index');

const app = express();
const port = process.env.PORT || 3000;
const host = process.env.HOST || 'localhost';

app.use(session({
  secret: 'secret token',
  resave: true,
  saveUninitialized: true
}));

app.use(passport.initialize());
app.use(passport.session());

var hostUrl = 'http://' + host + ':' + port;

// Configure Passport
passport.use(new docusign.OAuthClient({
  sandbox: true,
  clientID: '{CLIENT_ID}',
  clientSecret: '{CLIENT_SECRET}',
  callbackURL: hostUrl + '/auth/callback'
},
  function (accessToken, refreshToken, user, done) {
    // Here we're just assigning the tokens to the user profile object but we
    // could be using session storage or any other form of transient-ish storage
    user.accessToken = accessToken;
    user.refreshToken = refreshToken;
    return done(null, user);
  }
));

app.get('/auth', function (req, res) {
  passport.authenticate('docusign'/*, {state: 'optional state'}*/)(req, res);
});

app.get('/auth/callback', function (req, res) {

  // successfully retrieved an authorization code
  console.log("Got a new authorization code!\n");

});

app.listen(port, host, function (err) {
  if (err) {
    throw err;
  }
  console.log('server is running on http://' + host + ':' + port + '. Open following link to begin the authorization process: \n');
  console.log('http://' + host + ':' + port + '/auth');
});