<?php

declare (strict_types=1);
namespace HelpGent\DI\Invoker;

use HelpGent\Invoker\ParameterResolver\ParameterResolver;
use HelpGent\Psr\Container\ContainerInterface;
use ReflectionFunctionAbstract;
use ReflectionNamedType;
/**
 * Inject the container, the definition or any other service using type-hints.
 *
 * {@internal This class is similar to TypeHintingResolver and TypeHintingContainerResolver,
 *            we use this instead for performance reasons}
 *
 * @author Quim Calpe <quim@kalpe.com>
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class FactoryParameterResolver implements ParameterResolver
{
    /**
     * @var ContainerInterface
     */
    private $container;
    public function __construct(ContainerInterface $container)
    {
        $this->container = $container;
    }
    public function getParameters(ReflectionFunctionAbstract $reflection, array $providedParameters, array $resolvedParameters) : array
    {
        $parameters = $reflection->getParameters();
        // Skip parameters already resolved
        if (!empty($resolvedParameters)) {
            $parameters = \array_diff_key($parameters, $resolvedParameters);
        }
        foreach ($parameters as $index => $parameter) {
            $parameterType = $parameter->getType();
            if (!$parameterType) {
                // No type
                continue;
            }
            if (!$parameterType instanceof ReflectionNamedType) {
                // Union types are not supported
                continue;
            }
            if ($parameterType->isBuiltin()) {
                // Primitive types are not supported
                continue;
            }
            $parameterClass = $parameterType->getName();
            if ($parameterClass === 'Psr\\Container\\ContainerInterface') {
                $resolvedParameters[$index] = $this->container;
            } elseif ($parameterClass === 'DI\\Factory\\RequestedEntry') {
                // By convention the second parameter is the definition
                $resolvedParameters[$index] = $providedParameters[1];
            } elseif ($this->container->has($parameterClass)) {
                $resolvedParameters[$index] = $this->container->get($parameterClass);
            }
        }
        return $resolvedParameters;
    }
}
