<?php

namespace JMS\Serializer\Handler;

use Psr\Container\ContainerInterface as PsrContainerInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;

class LazyHandlerRegistry extends HandlerRegistry
{
    private $container;
    private $initializedHandlers = array();

    public function __construct($container, array $handlers = array())
    {
        if (!$container instanceof PsrContainerInterface && !$container instanceof ContainerInterface) {
            throw new \InvalidArgumentException(sprintf('The container must be an instance of %s or %s (%s given).', PsrContainerInterface::class, ContainerInterface::class, \is_object($container) ? \get_class($container) : \gettype($container)));
        }

        parent::__construct($handlers);
        $this->container = $container;
    }

    public function registerHandler($direction, $typeName, $format, $handler)
    {
        parent::registerHandler($direction, $typeName, $format, $handler);
        unset($this->initializedHandlers[$direction][$typeName][$format]);
    }

    public function getHandler($direction, $typeName, $format)
    {
        if (isset($this->initializedHandlers[$direction][$typeName][$format])) {
            return $this->initializedHandlers[$direction][$typeName][$format];
        }

        if (!isset($this->handlers[$direction][$typeName][$format])) {
            return null;
        }

        $handler = $this->handlers[$direction][$typeName][$format];
        if (\is_array($handler) && \is_string($handler[0]) && $this->container->has($handler[0])) {
            $handler[0] = $this->container->get($handler[0]);
        }

        return $this->initializedHandlers[$direction][$typeName][$format] = $handler;
    }
}