Modifying existing payment extension

1. Prepare the checkout

First, perform a server-to-server POST request to prepare the checkout with the required data, including the order type, amount and currency. The response to a successful request is a JSON string with an id, which is required in the second step to create the payment form.

Code: Select all

function request() {
	$url = "https://test.oppwa.com/v1/checkouts";
	$data = "authentication.userId=8a8294174e0078ad014e1a2781e035ab" .
		"&authentication.password=8Dy7awrPX3" .
		"&authentication.entityId=8a8294174e0078ad014e1a2781d035a7" .
		"&amount=92.00" .
		"&currency=EUR" .
		"&paymentType=DB";

	$ch = curl_init();
	curl_setopt($ch, CURLOPT_URL, $url);
	curl_setopt($ch, CURLOPT_POST, 1);
	curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);// this should be set to true in production
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	$responseData = curl_exec($ch);
	if(curl_errno($ch)) {
		return curl_error($ch);
	}
	curl_close($ch);
	return $responseData;
}
$responseData = request();

2. Create the payment form

To create the payment form you just need to add the following lines of HTML/Javascript to your page and populating the following variables

The checkout's id that you got in the response from step 1

Code: Select all

<script src="https://test.oppwa.com/v1/paymentWidgets.js?checkoutId={checkoutId}"></script>

The shopperResultUrl, which is the page on your site where the customer should be redirected to after the payment is processed and the brands that will be available.

Code: Select all

<form action="{shopperResultUrl}" class="paymentWidgets">VISA MASTER AMEX</form>

3. Get the payment status

Once the payment has been processed, the customer is redirected to your shopperResultUrl along with a GET parameter resourcePath.

Important: The baseUrl must end in a "/", e.g. "https://test.oppwa.com/".

Then, to get the status of the payment, you should make a GET request to the baseUrl + resourcePath, including your authentication parameters.

Example of a resourcePath: resourcePath=/v1/checkouts/{checkoutId}/payment

Code: Select all

function request() {
	$url = "https://test.oppwa.com/v1/checkouts/{id}/payment";
	$url .= "?authentication.userId=8a8294174e0078ad014e1a2781e035ab";
	$url .= "&authentication.password=8Dy7awrPX3";
	$url .= "&authentication.entityId=8a8294174e0078ad014e1a2781d035a7";

	$ch = curl_init();
	curl_setopt($ch, CURLOPT_URL, $url);
	curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);// this should be set to true in production
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	$responseData = curl_exec($ch);
	if(curl_errno($ch)) {
		return curl_error($ch);
	}
	curl_close($ch);
	return $responseData;
}
$responseData = request();