{

private static ?Serializer $serializer = null;

private function __construct()

{

}

public static function getSerializer(): Serializer

{

if (self::$serializer === null) {

self::$serializer = self::createSerializer();

}

return self::$serializer;

}

private static function createSerializer(): Serializer

{

// Setup property info extractors for better type handling

$phpDocExtractor = new PhpDocExtractor();

$reflectionExtractor = new ReflectionExtractor();

$propertyInfoExtractor = new PropertyInfoExtractor(

[$reflectionExtractor],

[$phpDocExtractor, $reflectionExtractor],

[$phpDocExtractor],

[$reflectionExtractor],

[$reflectionExtractor]

);

// Configure normalizers

$normalizers = [

new ArrayToObjectNormalizer(),

new DateTimeNormalizer([

DateTimeNormalizer::FORMAT_KEY => \DateTime::RFC3339,

DateTimeNormalizer::TIMEZONE_KEY => 'UTC',

]),

new ArrayDenormalizer(),

new ObjectNormalizer(

null,

new CamelCaseToSnakeCaseNameConverter(),

null,

$propertyInfoExtractor,

null,

null,

[

AbstractNormalizer::CIRCULAR_REFERENCE_HANDLER => function ($object) {

return $object->getId() ?? spl_object_hash($object);

},

AbstractObjectNormalizer::SKIP_NULL_VALUES => true,

AbstractObjectNormalizer::PRESERVE_EMPTY_OBJECTS => true,

]

),

];

// Configure encoders

$encoders = [

new JsonEncoder(defaultContext: [

JsonEncode::OPTIONS => JSON_UNESCAPED_SLASHES | JSON_PRESERVE_ZERO_FRACTION,

]),

];

return new Serializer($normalizers, $encoders);

}

}