Checkout.php

<?php

namespace App\Domain;

class Checkout
{
    private $orderValidation;
    private $orderRepo;
    private $featureToggle;
    
    public function __construct(
        OrderValidation $orderValidation, 
        OrderRepository $orderRepo, 
        FeatureToggle $featureToggle
    ) {
        $this->orderValidation = $orderValidation;
        $this->orderRepo = $orderRepo;
        $this->featureToggle = $featureToggle;
    }
    
    public function saveOrder(Order $order): Order
    {
        $this->orderValidation->validate($order);
      
        $this->callFraudDetection($order);
        
        return $this->orderRepo->save($order);
    }
    
    public function callFraudDetection(Order $order): void
    {
        // se o feature toggle estiver desabilitado, retorna sem fazer nada
        if (!$this->featureToggle->isFraudDetectionEnabled()) {
            return;
        }
        $this->isFraud();
    }
}