public function DirectLinkPaymentIsSuccessful($alias)
{
$passphrase = new Passphrase(PASSPHRASE_SHA_IN);
$shaComposer = new AllParametersShaComposer($passphrase);
$directLinkRequest = new DirectLinkPaymentRequest($shaComposer);
$orderId = uniqid('order_');
// create a unique order id
$directLinkRequest->setOrderid($orderId);
$alias = new Alias($alias);
$directLinkRequest->setPspid(PSPID);
$directLinkRequest->setUserId(USERID);
$directLinkRequest->setPassword(PASSWORD);
$directLinkRequest->setAlias($alias);
$directLinkRequest->setAmount(100);
$directLinkRequest->setCurrency('EUR');
$directLinkRequest->setEci(new Eci(Eci::ECOMMERCE_RECURRING));
$directLinkRequest->validate();
$body = array();
foreach ($directLinkRequest->toArray() as $key => $value) {
$body[strtoupper($key)] = $value;
}
$body['SHASIGN'] = $directLinkRequest->getShaSign();
$client = new Client($directLinkRequest->getOgoneUri());
$request = $client->post(null, null, $body);
$response = $request->send();
$directLinkResponse = new DirectLinkPaymentResponse($response->getBody(true));
$this->assertTrue($directLinkResponse->isSuccessful());
return $alias;
}