<?php

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

use GraphQLByPoP\GraphQLServer\ObjectModels\NamedTypeExtensions;
use GraphQLByPoP\GraphQLServer\TypeResolvers\ObjectType\NamedTypeExtensionsObjectTypeResolver;
use PoP\ComponentModel\Feedback\ObjectTypeFieldResolutionFeedbackStore;
use PoP\ComponentModel\FieldResolvers\ObjectType\AbstractObjectTypeFieldResolver;
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\BooleanScalarTypeResolver;
use PoP\ComponentModel\TypeResolvers\ScalarType\StringScalarTypeResolver;
use PoP\GraphQLParser\Spec\Parser\Ast\FieldInterface;
/** @internal */
class NamedTypeExtensionsObjectTypeFieldResolver extends AbstractObjectTypeFieldResolver
{
    private ?StringScalarTypeResolver $stringScalarTypeResolver = null;
    private ?BooleanScalarTypeResolver $booleanScalarTypeResolver = null;
    protected final function getStringScalarTypeResolver() : StringScalarTypeResolver
    {
        if ($this->stringScalarTypeResolver === null) {
            /** @var StringScalarTypeResolver */
            $stringScalarTypeResolver = $this->instanceManager->getInstance(StringScalarTypeResolver::class);
            $this->stringScalarTypeResolver = $stringScalarTypeResolver;
        }
        return $this->stringScalarTypeResolver;
    }
    protected final function getBooleanScalarTypeResolver() : BooleanScalarTypeResolver
    {
        if ($this->booleanScalarTypeResolver === null) {
            /** @var BooleanScalarTypeResolver */
            $booleanScalarTypeResolver = $this->instanceManager->getInstance(BooleanScalarTypeResolver::class);
            $this->booleanScalarTypeResolver = $booleanScalarTypeResolver;
        }
        return $this->booleanScalarTypeResolver;
    }
    /**
     * @return array<class-string<ObjectTypeResolverInterface>>
     */
    public function getObjectTypeResolverClassesToAttachTo() : array
    {
        return [NamedTypeExtensionsObjectTypeResolver::class];
    }
    /**
     * @return string[]
     */
    public function getFieldNamesToResolve() : array
    {
        return ['elementName', 'namespacedName', 'possibleValues'];
    }
    public function getFieldTypeModifiers(ObjectTypeResolverInterface $objectTypeResolver, string $fieldName) : int
    {
        return match ($fieldName) {
            'elementName', 'namespacedName' => SchemaTypeModifiers::NON_NULLABLE,
            'possibleValues' => SchemaTypeModifiers::IS_ARRAY | SchemaTypeModifiers::IS_NON_NULLABLE_ITEMS_IN_ARRAY,
            default => parent::getFieldTypeModifiers($objectTypeResolver, $fieldName),
        };
    }
    public function getFieldDescription(ObjectTypeResolverInterface $objectTypeResolver, string $fieldName) : ?string
    {
        return match ($fieldName) {
            'elementName' => $this->__('The type\'s non-namespaced name', 'graphql-server'),
            'namespacedName' => $this->__('The type\'s namespaced name', 'graphql-server'),
            'possibleValues' => $this->__('Enum-like "possible values" for EnumString type resolvers, `null` otherwise', 'graphql-server'),
            default => parent::getFieldDescription($objectTypeResolver, $fieldName),
        };
    }
    public function resolveValue(ObjectTypeResolverInterface $objectTypeResolver, object $object, FieldDataAccessorInterface $fieldDataAccessor, ObjectTypeFieldResolutionFeedbackStore $objectTypeFieldResolutionFeedbackStore) : mixed
    {
        /** @var NamedTypeExtensions */
        $namedTypeExtensions = $object;
        return match ($fieldDataAccessor->getFieldName()) {
            'elementName' => $namedTypeExtensions->getTypeElementName(),
            'namespacedName' => $namedTypeExtensions->getTypeNamespacedName(),
            'possibleValues' => $namedTypeExtensions->getTypePossibleValues(),
            default => parent::resolveValue($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;
    }
    public function getFieldTypeResolver(ObjectTypeResolverInterface $objectTypeResolver, string $fieldName) : ConcreteTypeResolverInterface
    {
        return match ($fieldName) {
            'elementName', 'namespacedName', 'possibleValues' => $this->getStringScalarTypeResolver(),
            default => parent::getFieldTypeResolver($objectTypeResolver, $fieldName),
        };
    }
}
