One-click

<?php

$logins = [
    'login' => $credentials['private']['login'],
    'password' => $credentials['private']['password'],
];

$data = [
    'orderid' => 'POC_ONE_CLICK_' . rand(),
    'operation' => 'Sale',
    'eci' => 7,
    'accept_url' => $FRONDEND_URL . '/?type=accept',
    'decline_url' => $FRONDEND_URL . '/?type=error',
    'cancel_url' => $FRONDEND_URL . '/?type=error',
    'language' => 'fr_FR',
    'email' => '[email protected]',
    'custom_data' => '{"item 1":"Large Mocha Latte", "item 2":"Banana Nut Muffin"}',
    'time_limit_to_pay' => 90,
    'authentication_indicator' => 1,
    // ...
];

try {
    //Get JSON data from front-end
    $receivedData = json_decode(file_get_contents('php://input'), true);

    //Set reponse code  at 200
    http_response_code(200);

    $config = new \HiPay\Fullservice\HTTP\Configuration\Configuration([
        'apiUsername' => $logins['login'],
        'apiPassword' => $logins['password']
    ]);
    $clientProvider = new \HiPay\Fullservice\HTTP\SimpleHTTPClient($config);
    $gatewayClient = new \HiPay\Fullservice\Gateway\Client\GatewayClient($clientProvider);

    //Instantiate order request
    $orderRequest = new \HiPay\Fullservice\Gateway\Request\Order\OrderRequest();
    $orderRequest->orderid = $data['orderid'];
    $orderRequest->operation = $data['operation'];
    $orderRequest->description = $data['description'];
    $orderRequest->long_description = $data['long_description'];
    $orderRequest->accept_url = $data['accept_url'];
    $orderRequest->decline_url = $data['decline_url'];
    $orderRequest->pending_url = $data['pending_url'];
    $orderRequest->exception_url = $data['exception_url'];
    $orderRequest->cancel_url = $data['cancel_url'];
    $orderRequest->notify_url = $data['notify_url'];
    $orderRequest->language = $data['language'];
    $orderRequest->custom_data = $data['custom_data'];
    $orderRequest->payment_product = $receivedData['payment_product'];
    // Set one_click parameter to true value if the transaction is realized with an existing tokenized card
    $orderRequest->one_click = $receivedData['one_click'];

    $paymentMethod = new \HiPay\Fullservice\Gateway\Request\PaymentMethod\CardTokenPaymentMethod();
    $paymentMethod->eci = $data['eci'];
    $paymentMethod->authentication_indicator = $data['authentication_indicator'];
    $paymentMethod->cardtoken = $receivedData['token'];
    $orderRequest->paymentMethod = $paymentMethod;

    $customerBillingInfo = new \HiPay\Fullservice\Gateway\Request\Info\CustomerBillingInfoRequest();
    $customerBillingInfo->email = $data['email'];
    $customerBillingInfo->phone = $data['phone'];
    $customerBillingInfo->birthdate = $data['birthdate'];
    $customerBillingInfo->gender = $data['gender'];
    $customerBillingInfo->firstname = $data['firstname'];
    $customerBillingInfo->lastname = $data['lastname'];
    $customerBillingInfo->country = $data['country'];
    $customerBillingInfo->recipientinfo = $data['recipientinfo'];
    $customerBillingInfo->streetaddress = $data['streetaddress'];
    $customerBillingInfo->streetaddress2 = $data['streetaddress2'];
    $customerBillingInfo->city = $data['city'];
    $customerBillingInfo->state = $data['state'];
    $customerBillingInfo->zipcode = $data['zipcode'];
    $orderRequest->customerBillingInfo = $customerBillingInfo;

    //Send the request order
    $transaction = $gatewayClient->requestNewOrder($orderRequest);

    $response = [
        'transaction_number' => $transaction->getTransactionReference(),
        'order_id' => $transaction->getOrder()->getId(),
        'forward_url' => (!$transaction->getReason() ? $data['accept_url'] : $data['cancel_url']),
    ];

    // This response is send to the front-end at the success of AJAX call
    echo json_encode($response);

} catch (\Exception $e) {
    $response = [
        'error_message' => $e->getMessage(),
    ];

    // This response is send to the front-end at the failure of AJAX call
    echo json_encode($response);
}