<?php

use Symfony\Component\PropertyAccess\PropertyAccessor;
use Symfony\Component\Serializer\Encoder\JsonEncoder;
use Symfony\Component\Serializer\Normalizer\ObjectNormalizer;
use Symfony\Component\Serializer\Normalizer\UnwrappingDenormalizer;
use Symfony\Component\Serializer\Serializer;

require __DIR__.'/vendor/autoload.php';

class Animal
{
    private $sound;

    public function __construct($sound)
    {
        $this->sound = $sound;
    }

    public function __toString(): string
    {
        return (string) $this->sound;
    }

    /**
     * Without this method, the "deserialize()" will fail with:
     * > Fatal error: Uncaught Symfony\Component\Serializer\Exception\MissingConstructorArgumentsException:
     * > Cannot create an instance of "Animal" from serialized data because its
     * > constructor requires parameter "sound" to be present.
     */
    public function getSound()
    {
        return $this->sound;
    }
}

class Fox extends Animal
{
    private $color;
    private $name;

    public function getColor()
    {
        return $this->color;
    }

    public function setColor($color): void
    {
        $this->color = $color;
    }

    public function getName()
    {
        return $this->name;
    }

    public function setName($name): void
    {
        $this->name = $name;
    }
}

class Wrapper
{
    private $animal;

    public function __construct(Animal $animal)
    {
        $this->animal = $animal;
    }

    public function getAnimal(): Animal
    {
        return $this->animal;
    }
}

$serializer = new Serializer([new UnwrappingDenormalizer(new PropertyAccessor()), new ObjectNormalizer()], ['json' => new JsonEncoder()]);

$fox = new Fox('???');
$fox->setName('Foobar');
$fox->setColor('Red');

$data = $serializer->serialize(new Wrapper($fox), 'json');
var_dump($data);

$result = $serializer->deserialize($data, Wrapper::class, 'json');
var_dump($result);