# woo-postnl/trunk/src/Rest_API/Router.php

PostNL for WooCommerce, version trunk. 67 lines.

- Page: https://pluginprobe.com/plugins/woo-postnl/trunk/code/src/Rest_API/Router.php
- Raw: https://pluginprobe.com/plugins/woo-postnl/trunk/raw/src/Rest_API/Router.php
- Modified: 2026-06-24T06:23:00+00:00

Line numbers below start at 1. Link to a line or a range by appending a fragment to the
page URL, for example `https://pluginprobe.com/plugins/woo-postnl/trunk/code/src/Rest_API/Router.php#L10-L20`.

```php
<?php
/**
 * Class Rest_API/Router file.
 *
 * @package PostNLWooCommerce\Rest_API
 */

declare( strict_types = 1 );

namespace PostNLWooCommerce\Rest_API;

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Class Router
 *
 * Decides per-flow whether the new PostNL SDK is wired up. Every supported
 * flow is gated behind its own filter so flows can be toggled independently
 * during the v4 migration.
 *
 * @package PostNLWooCommerce\Rest_API
 * @since   5.9.6
 */
class Router {

	/**
	 * Flows that may be enabled for the PostNL SDK.
	 *
	 * postcode_check is intentionally absent — it stays on the legacy REST path.
	 *
	 * @since 5.9.6
	 * @var string[]
	 */
	const SUPPORTED_FLOWS = array(
		'barcode',
		'timeframe',
		'pickup_location',
		'checkout',
		'label',
		'return_label',
		'letterbox',
		'shipment_and_return',
		'smart_returns',
	);

	/**
	 * Return whether the SDK is enabled for a given flow.
	 *
	 * Flows not in SUPPORTED_FLOWS always return false without invoking any filter.
	 * Every flow defaults to false; site owners opt in via the filter.
	 *
	 * @since 5.9.6
	 *
	 * @param string $flow Flow identifier.
	 * @return bool
	 */
	public static function sdk_enabled_for( string $flow ): bool {
		if ( ! in_array( $flow, self::SUPPORTED_FLOWS, true ) ) {
			return false;
		}

		return (bool) apply_filters( "postnl_sdk_enable_{$flow}", false );
	}
}

```