quickbooks controller

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class Quickbooks extends CI_Controller {

  public function oauth(){
    $this->load->helper('quickbooks');
    $this->load->library('sq_library');
    $this->config->load('quickbooks');

    $qb_other = $this->config->item('qb_other');
    $qb_application = $this->config->item('qb_application');

    $dsn = $qb_other['dsn'];
    $encryption_key = $qb_other['encryption_key'];
    $oauth_consumer_key = $qb_application['development']['oauth_key'];
    $oauth_consumer_secret = $qb_application['development']['oauth_secret'];
    $the_username = $qb_other['the_username'];
    $the_tenant = $qb_other['the_tenant'];

    $this->sq_library->config();
    if(count($_GET) == 0){
      $this->sq_library->authenticate();
    }else{
      //var_dump($_GET);
      $oauth_token = $_GET['oauth_token'];
      $oauth_verifier = $_GET['oauth_verifier']
      $realmId = $_GET['realmId'];
      $dataSource = $_GET['dataSource']

      $IPP = new QuickBooks_IPP($dsn);

      $IntuitAnywhere = new QuickBooks_IPP_IntuitAnywhere($dsn, $encryption_key, $oauth_consumer_key, $oauth_consumer_secret);
      $creds = $IntuitAnywhere->load($the_username, $the_tenant);

      /*
      $Service = new QuickBooks_IPP_Service_SalesReceipt();

      $SalesReceipt = new QuickBooks_IPP_Object_SalesReceipt();

      $Header = new QuickBooks_IPP_Object_Header();
      $Header->setDocNumber('TESTabcd');
      $Header->setTxnDate(date('Y-m-d'));
      $Header->setCustomerName('ConsoliBYTE, LLC');
      $SalesReceipt->addHeader($Header);

      $Line = new QuickBooks_IPP_Object_Line();
      $Line->setAmount(525);
      $Line->setItemName('Test Item 1');
      $Line->setQty(5);
      $SalesReceipt->addLine($Line);

      $ID = $Service->add($Context, $realmID, $SalesReceipt);
      */

    }

  }

}