Create WP order

<?php
/**
 * Plugin Name: Stripe Sync Order
 * Description: REST API endpoint for creating and completing WooCommerce orders via Stripe webhook or other external service.
 * Version: 1.0
 * Author: T+GM Consulting
 */

// Register custom REST endpoint
add_action('rest_api_init', function () {
    register_rest_route('stripe-sync/v1', '/create-order', [
        'methods'  => 'POST',
        'callback' => 'stripe_sync_create_order',
        'permission_callback' => '__return_true', // Biztonság: majd érdemes lehet hitelesítést tenni rá
    ]);
});

function stripe_sync_create_order(WP_REST_Request $request) {
    $product_id = 123; // ← IDE írd be a termék ID-ját
    $user_id = 0; // 0 ha guest user
    $quantity = 1;

    // Dummy billing address
    $address = [
        'first_name' => 'Stripe',
        'last_name'  => 'User',
        'email'      => '[email protected]',
        'phone'      => '06301234567',
        'address_1'  => 'Stripe Street 1',
        'city'       => 'Budapest',
        'postcode'   => '1111',
        'country'    => 'HU',
    ];

    try {
        $order = wc_create_order(['customer_id' => $user_id]);
        $product = wc_get_product($product_id);
        if (!$product) {
            return new WP_Error('invalid_product', 'A megadott termék nem létezik', ['status' => 400]);
        }

        $order->add_product($product, $quantity);
        $order->set_address($address, 'billing');
        $order->calculate_totals();
        $order->update_status('completed', 'Rendelés automatikusan lezárva Stripe-ból.');

        return [
            'success' => true,
            'order_id' => $order->get_id(),
            'status' => $order->get_status(),
        ];

    } catch (Exception $e) {
        return new WP_Error('order_creation_failed', $e->getMessage(), ['status' => 500]);
    }
}