/**
* Refund the amount
* Need to decode Last 4 digits for request.
*
* @param Varien_Object $payment
* @param decimal $amount
* @return Mage_Authorizenet_Model_Directpost
* @throws Mage_Core_Exception
*/
public function refund(Varien_Object $payment, $amount)
{
$last4 = $payment->getCcLast4();
$payment->setCcLast4($payment->decrypt($last4));
try {
$this->_refund($payment, $amount);
} catch (Exception $e) {
$payment->setCcLast4($last4);
throw $e;
}
$payment->setCcLast4($last4);
return $this;
}
