Module for showing ordered products

[vik*]

I am writing a module, let's call it base, which will show a button after vistor has clicked on buy+confirmed. That is the page uou usually the price you pay and eMail will be delivered.

 

On that page, I would like to add my module with the button, which on-click sends product details to another web service. Now I have several questions:

 

#1 Which hook can I use to place that button.

 

#2 When I click this button, products.php is called, which refers base.php. But base.php exists, because _PS_VERSION is not defined. If I remove comment out the _PS_VERSION_ check, Module and Cart are not found.

 

#3 what do you think in general of the code. Would getProducts() be the right method, just copied from another standard module.

 

base.php (only important part of it)

<?php
if ( !defined( '_PS_VERSION_' ) )
 exit;

class Base extends Module
{

 public function install() {
return parent::install() && $this->registerHook('payment') && $this->registerHook('invoice') && $this->registerHook('leftColumn');
 }

 public function uninstall() {
parent::uninstall();
 }

 public function getContent() {
return '<h2>'.$this->displayName.'</h2> <div>nothing to configure</div>';
 }

 public function hookPayment($params) {
if (!$this->active)
  return;

global $smarty;
$smarty->assign('buttonText', $this->l('Send to my base'));
return $this->display(__FILE__, 'base.tpl');
}


 public function ajaxCall($params) {
if (Configuration::get('PS_CATALOG_MODE'))
  return "return;";

$products = $params['cart']->getProducts(true);

global $smarty;
$this->smartyAssigns($smarty, $params);
return $this->display(__FILE__, 'products.tpl');
 }
}

 

 

products.php

 

global $cookie;

include(dirname(__FILE__).'/base.php');

$cart = new Cart((int)($cookie->id_cart));
$cart->id_lang = (int)($cookie->id_lang);

$itembase = new Itembase();
echo $base->hookAjaxCall(array('cookie' => $cookie, 'cart' => $cart));

 

 

Help is appreciated, thank you very much,

vik