<?php

namespace App\EventListener;

use ApiPlatform\Core\Util\RequestAttributesExtractor;
use ApiPlatform\Core\Validator\ValidatorInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpKernel\Event\RequestEvent;
use ApiPlatform\Core\EventListener\DeserializeListener as DecoratedListener;
use Symfony\Component\Serializer\Normalizer\DenormalizerInterface;
use ApiPlatform\Core\Serializer\SerializerContextBuilderInterface;

/**
 * We need this to be able to accept application/x-www-form-urlencoded type data
 */
final class DeserializeListener
{
	private $decorated;
	private $denormalizer;
	private $serializerContextBuilder;

	public function __construct(
		DenormalizerInterface $denormalizer,
		SerializerContextBuilderInterface $serializerContextBuilder,
		DecoratedListener $decorated,
		ValidatorInterface $validator
	)
	{
		$this->denormalizer = $denormalizer;
		$this->serializerContextBuilder = $serializerContextBuilder;
		$this->decorated = $decorated;
	}

	public function onKernelRequest(RequestEvent $event): void
	{
		$request = $event->getRequest();
		if ($request->isMethodCacheable() || $request->isMethod(Request::METHOD_DELETE))
		{
			return;
		}

		if ('form' === $request->getContentType())
		{
			$this->denormalizeFormRequest($request);
		}
		else
		{
			$this->decorated->onKernelRequest($event);
		}
	}

	private function denormalizeFormRequest(Request $request): void
	{
		if (!$attributes = RequestAttributesExtractor::extractAttributes($request))
		{
			return;
		}
		$context = $this->serializerContextBuilder->createFromRequest($request, false, $attributes);
		$populated = $request->attributes->get('data');

		if (null !== $populated)
		{
			$context['object_to_populate'] = $populated;
		}

		$data = $request->request->all();
		$object = $this->denormalizer->denormalize($data, $attributes['resource_class'], null, $context);
		$request->attributes->set('data', $object);
	}
}