public function Show()
{
if (isset($_GET['action'])) {
$content = $_GET['action'];
} elseif (isset($_GET['merchant_return_link']) && $_GET['merchant_return_link']) {
// PayPal sends it's own query string when the return after payment link is clicked,
// set our 'checkedout' state if found
$content = 'checkedout';
} else {
$content = '';
}
if (Config::GetInstance()->UsePayments() || empty($content)) {
// session is needed for payments and most submits that have '?action' set
Config::GetInstance()->InitSession();
// clear any old sessions when showing a fresh form to clear payment stuff
if (empty($content)) {
Config::GetInstance()->ClearSession();
}
}
// check what content to show
switch ($content) {
case 'confirmation':
case 'checkout':
$this->_PageFromSession();
break;
case 'cancel':
$this->SetErrors(array(array('field' => 'Form', 'err' => _T('Payment transaction cancelled.'))));
// fall through
// fall through
case 'back':
// show the original page after canceling a payment transaction
$this->RestorePostFromSession();
$this->HandleErrors();
echo $this->source;
$this->_UpdateCartState('cancelled');
break;
case 'checkedout':
$this->_UpdateCartState('checked-out');
$this->RestorePostFromSession();
$ctl = new FormController();
$ctl->checkedout = true;
$ctl->ShowUserConfirmation();
break;
case 'submitpayment':
// sent by Javascript when user pushed on a 'Pay' button
$this->RestorePostFromSession(false);
// don't clear session, it is needed upon 'checkedout'
// ensure the merger has access to cart details
$payment = new CheckoutController();
MessagePostMerger::GetInstance()->cart = $payment->getCartInstance();
// send the emails
$this->SendEmails();
// prepare feedback
if (count($this->errors) == 0) {
echo 'ok';
} else {
echo json_encode($this->errors);
}
break;
default:
if ($this->source === false) {
$this->ReadSource();
}
if ($this->source !== false) {
echo $this->source;
} else {
trigger_error('Read the template BEFORE trying to send it to a user.', E_USER_WARNING);
}
break;
}
}
