chill-bundles/src/Bundle/ChillMainBundle/Serializer/Normalizer/DiscriminatedObjectDenormalizer.php

<?php

namespace Chill\MainBundle\Serializer\Normalizer;

use Symfony\Component\Serializer\Normalizer\ContextAwareDenormalizerInterface;
use Symfony\Component\Serializer\Mapping\Factory\ClassMetadataFactoryInterface;
use Symfony\Component\Serializer\Normalizer\DenormalizerAwareInterface;
use Symfony\Component\Serializer\Normalizer\DenormalizerAwareTrait;
use Symfony\Component\Serializer\Exception\RuntimeException;


/**
 * Denormalize an object given a list of supported class
 */
class DiscriminatedObjectDenormalizer implements ContextAwareDenormalizerInterface, DenormalizerAwareInterface
{
    use DenormalizerAwareTrait;

    /**
     * The type to set for enabling this type
     */
    public const TYPE = '@multi';

    /**
     * Should be present in context and contains an array of
     * allowed types. 
     */
    public const ALLOWED_TYPES = 'denormalize_multi.allowed_types';

    /**
     * {@inheritDoc}
     */
    public function denormalize($data, string $type, string $format = null, array $context = [])
    {
        foreach ($context[self::ALLOWED_TYPES] as $localType) {
            if ($this->denormalizer->supportsDenormalization($data, $localType, $format)) {
                try {
                    return $this->denormalizer->denormalize($data, $localType, $format, $context);               } catch (RuntimeException $e) {
                    $lastException = $e;
                }
            }
        }

        throw new RuntimeException(sprintf("Could not find any denormalizer for those ".
            "ALLOWED_TYPES: %s", \implode(", ", $context[self::ALLOWED_TYPES])));
    }

    /**
     * {@inheritDoc}
     */
    public function supportsDenormalization($data, string $type, string $format = null, array $context = [])
    {
        if (self::TYPE !== $type) {
            return false;
        }

        if (0 === count($context[self::ALLOWED_TYPES] ?? [])) {
            throw new \LogicException("The context should contains a list of 
                allowed types");
        }

        foreach ($context[self::ALLOWED_TYPES] as $localType) {
            if ($this->denormalizer->supportsDenormalization($data, $localType, $format)) {
                return true;
            }
        }

        return false;
    }
    
}