core/src/Providers/PaymentServiceProvider.php

<?php

namespace Modules\Core\Providers;

use Illuminate\Support\ServiceProvider;
use Lunar\Pipelines\Cart\ApplyShipping;

class PaymentServiceProvider extends ServiceProvider
{
    public function register(): void
    {
        $this->mergeConfigFrom(__DIR__ . '/../../config/payment.php', 'payment');
    }

    public function boot(): void
    {
        config([
            'lunar.payments.types' => array_merge(
                config('lunar.payments.types', []),
                config('payment.types', [])
            ),
        ]);

        $cartPipeline = config('lunar.cart.pipelines.cart', []);
        $insertAfter = array_search(ApplyShipping::class, $cartPipeline, true);

        foreach (config('payment.cart_pipeline', []) as $pipe) {
            if (in_array($pipe, $cartPipeline, true)) {
                continue;
            }

            if ($insertAfter === false) {
                $cartPipeline[] = $pipe;
            } else {
                array_splice($cartPipeline, $insertAfter + 1, 0, [$pipe]);
                $insertAfter++;
            }
        }

        config(['lunar.cart.pipelines.cart' => $cartPipeline]);

        $this->loadRoutesFrom(__DIR__ . '/../Payment/routes/webhooks.php');
    }
}