leaky-paywall-one-time-stripe-card.php

<?php

add_action('leaky_paywall_before_create_stripe_subscription', 'endo_handle_product_for_recurring_checkout', 20, 2);

function endo_handle_product_for_recurring_checkout($customer, $fields) {

    $stripe = leaky_paywall_initialize_stripe_api();

    try {
        $invoice_item = $stripe->invoiceItems->create([
            'customer' => $customer->id,
            'amount' => 5000, // Amount in cents ($50.00 in this case)
            'currency' => 'usd',
            'description' => 'One-time fee for summer issue',
        ]);

    } catch (\Throwable $th) {
        leaky_paywall_log($user_id, 'leaky paywall - error creating invoice');
        wp_send_json(array(
            'error'  => $th->jsonBody
        ));
    }
}