Regenerate bulk order downloads by WP CLI in WooCommerce

OrderCommand.php

<?php
/**
 * Order Command
 */
class OrderCommand
{

    /**
     * Regenerate order downloads.
     *
     * ## OPTIONS
     *
     * <id>...
     * : One or more IDs of orders to re generate.
     */
    function regenerate_downloads($args, $assoc_args)
    {
        foreach ($args as $orderId) {
            $order = wc_get_order($orderId);

            if ($order instanceof \Automattic\WooCommerce\Admin\Overrides\OrderRefund) {
                WP_CLI::error("Order #{$order->get_id()} is refunded!", false);
                continue;
            }

            if (!$order->is_download_permitted()) {
                WP_CLI::error("Order #{$order->get_id()} is not permitted!", false);
                continue;
            }

            // Remove all existing download permissions for this order.
            // This uses the same code as the "regenerate download permissions" action in the WP admin (https://github.com/woocommerce/woocommerce/blob/3.5.2/includes/admin/meta-boxes/class-wc-meta-box-order-actions.php#L129-L131)
            // An instance of the download's Data Store (WC_Customer_Download_Data_Store) is created and
            // uses its method to delete a download permission from the database by order ID.
            $data_store = \WC_Data_Store::load('customer-download');
            $data_store->delete_by_order_id($order->get_id());

            // Run WooCommerce's built in function to create the permissions for an order (https://docs.woocommerce.com/wc-apidocs/function-wc_downloadable_product_permissions.html)
            // Setting the second "force" argument to true makes sure that this ignores the fact that permissions
            // have already been generated on the order.
            wc_downloadable_product_permissions($order->get_id(), true);

            WP_CLI::success("Order #{$order->get_id()}: Download generated successfully!");
        }
    }
}

\WP_CLI::add_command('wc_custom', '\License\OrderCommand');

Commands

wp wc_custom regenerate_downloads {orderId}
wp wc_custom regenerate_downloads $(wp post list --post_type=shop_order --format=ids --posts_per_page=10000)