/**
  * @param \Ilis\Bundle\PaymentBundle\Entity\Transaction\CreditCard $transaction
  */
 public function capture(CreditCardTransaction $transaction)
 {
     if (!is_numeric($transaction->getAmount()) || $transaction->getAmount() <= 0) {
         throw new Exception("Invalid amount");
     }
     // TODO: Check if the transaction has set the proper payment method
     $request = new WsRequest();
     $request->setOrder($transaction->getId());
     $amount = (double) number_format($transaction->getAmount(), 2, '.', '') * 100;
     $request->setAmount($amount);
     $request->setOrder($transaction->getIdentifier());
     $request->setMerchantCode($this->merchant->getCode());
     $request->setTerminal($this->merchant->getTerminal());
     $request->setCurrency($this->merchant->getCurrency());
     $request->setPan($transaction->creditCard);
     $request->setCvv2($transaction->cvv);
     $request->setExpiryDate(sprintf("%s%s", $transaction->expiryDateYear, $transaction->expiryDateMonth));
     $request->setTransactionType(WsTransaction::TYPE_AUTH);
     $this->merchant->signRequest($request);
     $response = $this->client->makeRequest($request);
     $operation = $response->getOperation();
     $authCode = $operation ? trim((string) $operation->Ds_AuthorisationCode) : null;
     if ($response->isValid() && !empty($authCode)) {
         $transaction->setStatus(Transaction::STATUS_SUCCESS);
         $transaction->setAuthCode((string) $response->getOperation()->Ds_AuthorisationCode);
     } else {
         $transaction->setStatus(Transaction::STATUS_ERROR);
         $transaction->setStatusCode((string) $response->getCode());
     }
     $transaction->setRawData($response->asXml());
 }