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44 changes: 22 additions & 22 deletions lib/Shift4/Shift4Gateway.php
Original file line number Diff line number Diff line change
Expand Up @@ -29,7 +29,7 @@ class Shift4Gateway

private $userAgent;

public function __construct($privateKey = null, Connection $connection = null)
public function __construct($privateKey = null, ?Connection $connection = null)
{
$this->objectSerializer = new ObjectSerializer();

Expand All @@ -41,7 +41,7 @@ public function __construct($privateKey = null, Connection $connection = null)
* @param \Shift4\Request\ChargeRequest $request
* @return \Shift4\Response\Charge
*/
public function createCharge($request, RequestOptions $requestOptions = null)
public function createCharge($request, ?RequestOptions $requestOptions = null)
{
return $this->post('/charges', $request, '\Shift4\Response\Charge', $requestOptions);
}
Expand All @@ -50,7 +50,7 @@ public function createCharge($request, RequestOptions $requestOptions = null)
* @param \Shift4\Request\CaptureRequest $request
* @return \Shift4\Response\Charge
*/
public function captureCharge($request, RequestOptions $requestOptions = null)
public function captureCharge($request, ?RequestOptions $requestOptions = null)
{
return $this->post('/charges/{chargeId}/capture', $request, '\Shift4\Response\Charge', $requestOptions);
}
Expand All @@ -68,7 +68,7 @@ public function retrieveCharge($chargeId)
* @param \Shift4\Request\ChargeUpdateRequest $request
* @return \Shift4\Response\Charge
*/
public function updateCharge($request, RequestOptions $requestOptions = null)
public function updateCharge($request, ?RequestOptions $requestOptions = null)
{
return $this->post('/charges/{chargeId}', $request, '\Shift4\Response\Charge', $requestOptions);
}
Expand All @@ -79,7 +79,7 @@ public function updateCharge($request, RequestOptions $requestOptions = null)
*
* @deprecated For backward compatibility only. Use "createRefund($request)".
*/
public function refundCharge($request, RequestOptions $requestOptions = null)
public function refundCharge($request, ?RequestOptions $requestOptions = null)
{
return $this->createRefund($request, $requestOptions);
}
Expand All @@ -97,7 +97,7 @@ public function listCharges($request = null)
* @param \Shift4\Request\CustomerRequest $request
* @return \Shift4\Response\Customer
*/
public function createCustomer($request, RequestOptions $requestOptions = null)
public function createCustomer($request, ?RequestOptions $requestOptions = null)
{
return $this->post('/customers', $request, '\Shift4\Response\Customer', $requestOptions);
}
Expand All @@ -115,7 +115,7 @@ public function retrieveCustomer($customerId)
* @param \Shift4\Request\CustomerUpdateRequest $request
* @return \Shift4\Response\Customer
*/
public function updateCustomer($request, RequestOptions $requestOptions = null)
public function updateCustomer($request, ?RequestOptions $requestOptions = null)
{
return $this->post('/customers/{customerId}', $request, '\Shift4\Response\Customer', $requestOptions);
}
Expand All @@ -142,7 +142,7 @@ public function listCustomers($request = null)
* @param \Shift4\Request\CardRequest $request
* @return \Shift4\Response\Card
*/
public function createCard($request, RequestOptions $requestOptions = null)
public function createCard($request, ?RequestOptions $requestOptions = null)
{
return $this->post('/customers/{customerId}/cards', $request, '\Shift4\Response\Card', $requestOptions);
}
Expand All @@ -161,7 +161,7 @@ public function retrieveCard($customerId, $cardId)
* @param \Shift4\Request\CardUpdateRequest $request
* @return \Shift4\Response\Card
*/
public function updateCard($request, RequestOptions $requestOptions = null)
public function updateCard($request, ?RequestOptions $requestOptions = null)
{
return $this->post('/customers/{customerId}/cards/{cardId}', $request, '\Shift4\Response\Card', $requestOptions);
}
Expand Down Expand Up @@ -198,7 +198,7 @@ public function retrievePaymentMethod($paymentMethodId)
* @param \Shift4\Request\PaymentMethodRequest $request
* @return \Shift4\Response\PaymentMethod
*/
public function createPaymentMethod($request, RequestOptions $requestOptions = null)
public function createPaymentMethod($request, ?RequestOptions $requestOptions = null)
{
return $this->post("/payment-methods", $request, '\Shift4\Response\PaymentMethod', $requestOptions);
}
Expand All @@ -225,7 +225,7 @@ public function listPaymentMethods($request)
* @param \Shift4\Request\SubscriptionRequest $request
* @return \Shift4\Response\Subscription
*/
public function createSubscription($request, RequestOptions $requestOptions = null)
public function createSubscription($request, ?RequestOptions $requestOptions = null)
{
return $this->post('/customers/{customerId}/subscriptions', $request, '\Shift4\Response\Subscription', $requestOptions);
}
Expand All @@ -244,7 +244,7 @@ public function retrieveSubscription($customerId, $subscriptionId)
* @param \Shift4\Request\SubscriptionUpdateRequest $request
* @return \Shift4\Response\Subscription
*/
public function updateSubscription($request, RequestOptions $requestOptions = null)
public function updateSubscription($request, ?RequestOptions $requestOptions = null)
{
return $this->post('/customers/{customerId}/subscriptions/{subscriptionId}', $request, '\Shift4\Response\Subscription', $requestOptions);
}
Expand All @@ -271,7 +271,7 @@ public function listSubscriptions($request)
* @param \Shift4\Request\PlanRequest $request
* @return \Shift4\Response\Plan
*/
public function createPlan($request, RequestOptions $requestOptions = null)
public function createPlan($request, ?RequestOptions $requestOptions = null)
{
return $this->post('/plans', $request, '\Shift4\Response\Plan', $requestOptions);
}
Expand All @@ -289,7 +289,7 @@ public function retrievePlan($planId)
* @param \Shift4\Request\PlanUpdateRequest $request
* @return \Shift4\Response\Plan
*/
public function updatePlan($request, RequestOptions $requestOptions = null)
public function updatePlan($request, ?RequestOptions $requestOptions = null)
{
return $this->post('/plans/{planId}', $request, '\Shift4\Response\Plan', $requestOptions);
}
Expand Down Expand Up @@ -352,7 +352,7 @@ public function retrieveToken($tokenId)
* @param \Shift4\Request\BlacklistRuleRequest $request
* @return \Shift4\Response\BlacklistRule
*/
public function createBlacklistRule($request, RequestOptions $requestOptions = null)
public function createBlacklistRule($request, ?RequestOptions $requestOptions = null)
{
return $this->post('/blacklist', $request, '\Shift4\Response\BlacklistRule', $requestOptions);
}
Expand Down Expand Up @@ -388,7 +388,7 @@ public function listBlacklistRules($request = null)
* @param \Shift4\Request\CreditRequest $request
* @return \Shift4\Response\Credit
*/
public function createCredit($request, RequestOptions $requestOptions = null)
public function createCredit($request, ?RequestOptions $requestOptions = null)
{
return $this->post('/credits', $request, '\Shift4\Response\Credit', $requestOptions);
}
Expand All @@ -406,7 +406,7 @@ public function retrieveCredit($creditId)
* @param \Shift4\Request\CreditUpdateRequest $request
* @return \Shift4\Response\Credit
*/
public function updateCredit($request, RequestOptions $requestOptions = null)
public function updateCredit($request, ?RequestOptions $requestOptions = null)
{
return $this->post('/credits/{creditId}', $request, '\Shift4\Response\Credit', $requestOptions);
}
Expand Down Expand Up @@ -464,7 +464,7 @@ public function retrieveDispute($disputeId)
* @param \Shift4\Request\DisputeUpdateRequest $request
* @return \Shift4\Response\Dispute
*/
public function updateDispute($request, RequestOptions $requestOptions = null)
public function updateDispute($request, ?RequestOptions $requestOptions = null)
{
return $this->post('/disputes/{disputeId}', $request, '\Shift4\Response\Dispute', $requestOptions);
}
Expand All @@ -473,7 +473,7 @@ public function updateDispute($request, RequestOptions $requestOptions = null)
* @param string $disputeId
* @return \Shift4\Response\Dispute
*/
public function closeDispute($disputeId, RequestOptions $requestOptions = null)
public function closeDispute($disputeId, ?RequestOptions $requestOptions = null)
{
return $this->post("/disputes/{$disputeId}/close", null, '\Shift4\Response\Dispute', $requestOptions);
}
Expand Down Expand Up @@ -518,7 +518,7 @@ public function retrieveRefund($refundId)
* @param \Shift4\Request\RefundRequest $request
* @return \Shift4\Response\Refund
*/
public function createRefund($request, RequestOptions $requestOptions = null)
public function createRefund($request, ?RequestOptions $requestOptions = null)
{
return $this->post('/refunds', $request, '\Shift4\Response\Refund', $requestOptions);
}
Expand Down Expand Up @@ -593,7 +593,7 @@ private function getFromEndpoint($endpoint, $path, $responseClass)
return $this->objectSerializer->deserialize($response['body'], $responseClass);
}

private function post($path, $request, $responseClass, RequestOptions $requestOptions = null)
private function post($path, $request, $responseClass, ?RequestOptions $requestOptions = null)
{
$requestBody = $this->objectSerializer->serialize($request, $path);
$response = $this->connection->post($this->endpoint . $path, $requestBody, $this->buildHeaders($requestOptions));
Expand Down Expand Up @@ -648,7 +648,7 @@ private function buildQueryString($path, $request)
return $path . $queryString;
}

private function buildHeaders(RequestOptions $requestOptions = null)
private function buildHeaders(?RequestOptions $requestOptions = null)
{
$headers = [
'Authorization' => 'Basic ' . base64_encode($this->privateKey . ':'),
Expand Down