WPGens Points and Rewards - manual refund points per order

functions.php

<?php

// Add meta box to order page
add_action('add_meta_boxes', 'add_points_refund_box');
function add_points_refund_box() {
	if (class_exists('Automattic\WooCommerce\Internal\DataStores\Orders\CustomOrdersTableController')) {
        $controller = wc_get_container()->get('Automattic\WooCommerce\Internal\DataStores\Orders\CustomOrdersTableController');
        $screen = $controller->custom_orders_table_usage_is_enabled()
            ? wc_get_page_screen_id('shop-order')
            : 'shop_order';
    } else {
        $screen = 'shop_order';
    }
    add_meta_box(
        'points_refund_box',
        'Refund Points',
        'render_points_refund_box',
        $screen,
        'side',
        'default'
    );
}

function render_points_refund_box($post) {
    $order = wc_get_order($post->ID);
    ?>
    <div class="points-refund-box">
        <p>
            <label>Points to Refund:</label>
            <input type="number" id="points_refund_amount" step="1" min="1" />
        </p>
        <p>
            <button type="button" class="button button-primary" id="refund_points_button">
                Refund Points
            </button>
        </p>
    </div>

    <script>
    jQuery(document).ready(function($) {
        $('#refund_points_button').on('click', function() {
            if (!confirm('Are you sure you want to refund these points?')) {
                return;
            }

            $.ajax({
                url: ajaxurl,
                type: 'POST',
                data: {
                    action: 'manual_points_refund',
                    order_id: '<?php echo esc_js($post->ID); ?>',
                    points: $('#points_refund_amount').val(),
                    nonce: '<?php echo wp_create_nonce('wc-admin-nonce'); ?>'
                },
                success: function(response) {
                    if (response.success) {
                        alert('Points refunded successfully');
                        window.location.reload();
                    } else {
                        alert(response.data.message);
                    }
                }
            });
        });
    });
    </script>
    <?php
}

// AJAX handler
add_action('wp_ajax_manual_points_refund', 'handle_manual_points_refund');
function handle_manual_points_refund() {
    check_ajax_referer('wc-admin-nonce', 'nonce');
    
    if (!current_user_can('edit_shop_orders')) {
        wp_send_json_error(['message' => 'Insufficient permissions']);
    }

    $order_id = isset($_POST['order_id']) ? absint($_POST['order_id']) : 0;
    $points = isset($_POST['points']) ? absint($_POST['points']) : 0;
    
    $order = wc_get_order($order_id);
    if (!$order || !$points) {
        wp_send_json_error(['message' => 'Invalid order or points amount']);
    }

    $user_id = $order->get_user_id();
    if (!$user_id) {
        wp_send_json_error(['message' => 'Order has no associated user']);
    }

    do_action(
        'wpgens_loyalty_update_points',
        $user_id,
        $points,
        WPGL_Points_Activity_Type::EARN,
        WPGL_Points_Source_Type::ORDER_REFUNDED,
        $order_id,
        'Manual points refund'
    );

    wp_send_json_success();
}