woocommerce-paypal-payments/modules/ppcp-woocommerce-mobile/module.php

<?php
/**
 * WooCommerce Mobile Integration module
 *
 * @package WooCommerce\PayPalCommerce\WooCommerceMobile
 */

declare(strict_types=1);

namespace WooCommerce\PayPalCommerce\WooCommerceMobile;

use Exception;
use WooCommerce\PayPalCommerce\Vendor\Inpsyde\Modularity\Module\ExecutableModule;
use WooCommerce\PayPalCommerce\Vendor\Inpsyde\Modularity\Module\ExtendingModule;
use WooCommerce\PayPalCommerce\Vendor\Inpsyde\Modularity\Module\ModuleClassNameIdTrait;
use WooCommerce\PayPalCommerce\Vendor\Inpsyde\Modularity\Module\ServiceModule;
use WooCommerce\PayPalCommerce\Vendor\Psr\Container\ContainerInterface;

/**
 * Class WooCommerceMobileModule
 */
class WooCommerceMobileModule implements ServiceModule, ExtendingModule, ExecutableModule {

    use ModuleClassNameIdTrait;


    /**
     * {@inheritdoc}
     */
    public function services(): array {
        return require __DIR__ . '/services.php';
    }

    /**
     * {@inheritdoc}
     */
    public function extensions(): array {
        return require __DIR__ . '/extensions.php';
    }

    /**
     * {@inheritdoc}
     */
    public function run( ContainerInterface $container ): bool {

        // Register the REST API endpoints for mobile integration
        add_action(
            'rest_api_init',
            static function () use ( $container ) {
                // Payment capture endpoint
                $capture_endpoint = $container->get( 'woocommerce-mobile.capture-paypal-payment-endpoint' );
                $capture_endpoint->register_routes();

                // Credentials endpoint
                $credentials_endpoint = $container->get( 'woocommerce-mobile.get-plugin-credentials-endpoint' );
                $credentials_endpoint->register_routes();

                // Access token endpoint
                $access_token_endpoint = $container->get( 'woocommerce-mobile.get-access-token-endpoint' );
                $access_token_endpoint->register_routes();

                // Zettle OAuth setup endpoint
                $zettle_oauth_endpoint = $container->get( 'woocommerce-mobile.zettle-oauth-setup-endpoint' );
                $zettle_oauth_endpoint->register_routes();
            }
        );
        
        // Initialize admin settings page
        if ( is_admin() ) {
            $settings_page = $container->get( 'woocommerce-mobile.zettle-settings-page' );
            $settings_page->init();
        }

        return true;
    }
}

return static function (): WooCommerceMobileModule {
    return new WooCommerceMobileModule();
};