<?php

declare (strict_types=1);
namespace GraphQLByPoP\GraphQLServer\FieldResolvers\ObjectType;

use PoP\ComponentModel\Feedback\ObjectTypeFieldResolutionFeedbackStore;
use PoP\ComponentModel\FieldResolvers\ObjectType\AbstractGlobalObjectTypeFieldResolver;
use PoP\ComponentModel\QueryResolution\FieldDataAccessorInterface;
use PoP\ComponentModel\Schema\SchemaTypeModifiers;
use PoP\ComponentModel\TypeResolvers\ConcreteTypeResolverInterface;
use PoP\ComponentModel\TypeResolvers\ObjectType\ObjectTypeResolverInterface;
use PoP\ComponentModel\TypeResolvers\ScalarType\StringScalarTypeResolver;
use PoP\GraphQLParser\Spec\Parser\Ast\FieldInterface;
/** @internal */
class GlobalObjectTypeFieldResolver extends AbstractGlobalObjectTypeFieldResolver
{
    private ?StringScalarTypeResolver $stringScalarTypeResolver = null;
    protected final function getStringScalarTypeResolver() : StringScalarTypeResolver
    {
        if ($this->stringScalarTypeResolver === null) {
            /** @var StringScalarTypeResolver */
            $stringScalarTypeResolver = $this->instanceManager->getInstance(StringScalarTypeResolver::class);
            $this->stringScalarTypeResolver = $stringScalarTypeResolver;
        }
        return $this->stringScalarTypeResolver;
    }
    /**
     * @return string[]
     */
    public function getFieldNamesToResolve() : array
    {
        return ['__typename'];
    }
    public function getFieldTypeResolver(ObjectTypeResolverInterface $objectTypeResolver, string $fieldName) : ConcreteTypeResolverInterface
    {
        return match ($fieldName) {
            '__typename' => $this->getStringScalarTypeResolver(),
            default => parent::getFieldTypeResolver($objectTypeResolver, $fieldName),
        };
    }
    public function getFieldTypeModifiers(ObjectTypeResolverInterface $objectTypeResolver, string $fieldName) : int
    {
        return match ($fieldName) {
            '__typename' => SchemaTypeModifiers::NON_NULLABLE,
            default => parent::getFieldTypeModifiers($objectTypeResolver, $fieldName),
        };
    }
    public function getFieldDescription(ObjectTypeResolverInterface $objectTypeResolver, string $fieldName) : ?string
    {
        return match ($fieldName) {
            '__typename' => $this->__('The object\'s type', 'graphql-server'),
            default => parent::getFieldDescription($objectTypeResolver, $fieldName),
        };
    }
    public function resolveValue(ObjectTypeResolverInterface $objectTypeResolver, object $object, FieldDataAccessorInterface $fieldDataAccessor, ObjectTypeFieldResolutionFeedbackStore $objectTypeFieldResolutionFeedbackStore) : mixed
    {
        switch ($fieldDataAccessor->getFieldName()) {
            case '__typename':
                return $objectTypeResolver->getMaybeNamespacedTypeName();
        }
        return parent::resolveValue($objectTypeResolver, $object, $fieldDataAccessor, $objectTypeFieldResolutionFeedbackStore);
    }
    /**
     * Since the return type is known for all the fields in this
     * FieldResolver, there's no need to validate them
     */
    public function validateResolvedFieldType(ObjectTypeResolverInterface $objectTypeResolver, FieldInterface $field) : bool
    {
        return \false;
    }
}
