var Promise = require('bluebird');
var Client = require('instagram-private-api').V1;
var device = new Client.Device('someuser');
var storage = new Client.CookieFileStorage('someuser.json');

var username = "";
var password = "";
var mailUser = "";
var mailPW = "";

var proxyURL = ""

function challengeMe(error) {
    return Client.Web.Challenge.resolve(error)
        .then(function(challenge) {
                  console.log("Hey There!")
                   return challenge.email()
        })
        .then(function(challenge) {
            return challenge.code(123456) //The error is here
   })
 }

   function loginAndFollow(device, storage, user, password) {
   	return Client.Session.create(device, storage, user, password)
   		.then(function(session) {
   			// Now you have a session, we can follow / unfollow, anything...
   			// And we want to follow Instagram official profile
   			return [session, Client.Account.searchForUser(session, 'instagram')]
   		})
   		.spread(function(session, account) {
   			return Client.Relationship.create(session, account.id);
   		})
   };

   loginAndFollow(device, storage, username, password)
	.catch(Client.Exceptions.CheckpointError, function(error){
		// Ok now we know that Instagram is asking us to
		// prove that we are real users
		return challengeMe(error);
	})
  .then(function(relationship) {
		console.log(relationship.params)
		// {followedBy: ... , following: ... }
		// Yey, you just followed an account
	});