<?php


namespace InstagramFeed\Vendor\Invoker\ParameterResolver;

use ReflectionFunctionAbstract;
use ReflectionNamedType;
/**
 * Inject entries using type-hints.
 *
 * Tries to match type-hints with the parameters provided.
 */
class TypeHintResolver implements ParameterResolver
{
    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 === 'self') {
                $parameterClass = $parameter->getDeclaringClass()->getName();
            }
            if (array_key_exists($parameterClass, $providedParameters)) {
                $resolvedParameters[$index] = $providedParameters[$parameterClass];
            }
        }
        return $resolvedParameters;
    }
}
