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Normalizer.php
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Normalizer.php
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<?php
namespace Vox\Serializer;
use Metadata\MetadataFactoryInterface;
use RuntimeException;
use Symfony\Component\Serializer\Normalizer\NormalizerAwareInterface;
use Symfony\Component\Serializer\Normalizer\NormalizerInterface;
use Vox\Data\Mapping\Bindings;
use Vox\Data\Mapping\Exclude;
use Vox\Metadata\ClassMetadata;
use Vox\Metadata\PropertyMetadata;
/**
* A data normalized aimed to be used with symfony serializer component
*
* @author Jhonatan Teixeira <jhonatan.teixeira@gmail.com>
*/
class Normalizer implements NormalizerInterface, NormalizerAwareInterface
{
/**
* @var MetadataFactoryInterface
*/
private $metadataFactory;
/**
* @var NormalizerInterface
*/
private $normalizer;
/**
* @var \SplObjectStorage
*/
private $storage;
public function __construct(MetadataFactoryInterface $metadataFactory)
{
$this->metadataFactory = $metadataFactory;
$this->clear();
}
public function normalize($object, $format = null, array $context = [])
{
if ($this->storage->offsetExists($object)) {
return $this->storage[$object];
}
$data = $this->extractData($object, $format, $context);
return $data;
}
private function extractData($object, string $format = null, array $context = []): array
{
$objectMetadata = $this->metadataFactory->getMetadataForClass(get_class($object));
if (!$objectMetadata instanceof ClassMetadata) {
throw new RuntimeException('invalid metadata class');
}
$data = [];
if ($objectMetadata->reflection->getParentClass() && ($context['exposeTypes'] ?? true)) {
$data['type'] = get_class($object);
}
/* @var $propertyMetadata PropertyMetadata */
foreach ($objectMetadata->propertyMetadata as $propertyMetadata) {
$binding = $propertyMetadata->getAnnotation(Bindings::class);
$value = $propertyMetadata->getValue($object);
if ($propertyMetadata->hasAnnotation(Exclude::class)
&& $propertyMetadata->getAnnotation(Exclude::class)->output) {
continue;
}
if (!empty($value) && $propertyMetadata->isDateType() && $propertyMetadata->isDecoratedType()) {
$value = $this->convertDateTimeValue($value, $propertyMetadata);
}
if ((is_array($value) || $value instanceof \Traversable)
&& (preg_match('/\[\]$/', $propertyMetadata->type) || $propertyMetadata->type == 'array')) {
$items = [];
foreach ($value as $index => $item) {
$items[$index] = $this->normalizeIfSupported($item, $format, $context);
}
$value = $items;
}
if (is_object($value)) {
$value = $this->normalizeIfSupported($value, $format, $context);
}
$target = $binding
? ($binding->target ?? $binding->source ?? $propertyMetadata->name)
: $propertyMetadata->name;
if (preg_match('/\./', $target)) {
$path = implode("']['", explode('.', sprintf("['%s']", $target)));
eval("\$data$path = \$value;");
} else {
$data[$target] = $value;
}
}
$this->storage[$object] = $data;
return $data;
}
private function convertDateTimeValue(\DateTime $date, PropertyMetadata $propertyMetadata): string
{
return $date->format($propertyMetadata->typeInfo['decoration'] ?? 'Y-m-d H:i:s');
}
private function normalizeIfSupported($value, string $format = null, array $context = [])
{
if (isset($this->normalizer)) {
return $this->normalizer->normalize($value, $format, $context);
}
if ($this->supportsNormalization($value)) {
return $this->normalize($value, $format, $context);
}
return $value;
}
public function supportsNormalization($data, $format = null): bool
{
return is_object($data) && !$data instanceof \DateTime;
}
public function setNormalizer(NormalizerInterface $normalizer)
{
$this->normalizer = $normalizer;
}
public function clear()
{
$this->storage = new \SplObjectStorage();
}
}