<?php

namespace App\Request\ParamConverter;

use Sensio\Bundle\FrameworkExtraBundle\Configuration\ParamConverter;
use Sensio\Bundle\FrameworkExtraBundle\Request\ParamConverter\ParamConverterInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Validator\ConstraintViolationListInterface;

final class ConstraintViolationsConverter implements ParamConverterInterface
{
    /**
     * @param Request $request
     * @param ParamConverter $configuration
     *
     * @return bool|void
     */
    public function apply(Request $request, ParamConverter $configuration)
    {
        $violations = $request->attributes->get('_violations');
        $request->attributes->remove('_violations');

        $request->attributes->set($configuration->getName(), $violations);
    }

    /**
     * @param ParamConverter $configuration
     *
     * @return bool
     */
    public function supports(ParamConverter $configuration)
    {
        return ConstraintViolationListInterface::class === $configuration->getClass();
    }
}