/**
* Calculates signature only for model which implements OrderInterface.
* Signature for order is string with multiple variables described in SIGNATURE_FORMAT.
* It uses SignatureCalculatorInterface to calculate one of the parameters.
*
* @param OrderInterface $order
* @param CredentialsInterface $credentials
* @param AlgorithmInterface $algorithm
*
* @return string
* @throws SignatureCalculatorException
*/
public function calculate(OrderInterface $order, CredentialsInterface $credentials, AlgorithmInterface $algorithm)
{
$signature = $this->signatureCalculator->calculate($this->getSortedParameters($order), $credentials, $algorithm);
$signature = sprintf(self::SIGNATURE_FORMAT, $signature, $algorithm->getName(), $credentials->getMerchantPosId());
$this->logCalculatedSignature($order, $signature);
return $signature;
}
/**
* @param string $data
* @param string $signatureHeader
* @param CredentialsInterface $credentials
*
* @return bool
* @throws SignatureCalculatorException
*/
public function isSignatureValid($data, $signatureHeader, CredentialsInterface $credentials)
{
$calculatedSignature = $this->signatureCalculator->calculate(json_decode($data, true), $credentials, $this->extractAlgorithm($signatureHeader));
return $this->compareSignatureStrings($calculatedSignature, $this->extractSignature($signatureHeader));
}