InputFactory.php

<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
declare(strict_types=1);

namespace Magento\Framework\GraphQl\Config\Element;

use Magento\Framework\GraphQl\Config\ConfigElementFactoryInterface;
use Magento\Framework\GraphQl\Config\ConfigElementInterface;
use Magento\Framework\ObjectManagerInterface;

/**
 * Factory for config elements of 'input' type.
 */
class InputFactory implements ConfigElementFactoryInterface
{
    /**
     * @var ObjectManagerInterface
     */
    private $objectManager;

    /**
     * @var FieldsFactory
     */
    private $fieldsFactory;

    /**
     * @param ObjectManagerInterface $objectManager
     * @param FieldsFactory $fieldsFactory
     */
    public function __construct(
        ObjectManagerInterface $objectManager,
        FieldsFactory $fieldsFactory
    ) {
        $this->objectManager = $objectManager;
        $this->fieldsFactory = $fieldsFactory;
    }

    /**
     * Instantiate an object representing 'input' GraphQL config element.
     *
     * @param array $data
     * @return ConfigElementInterface
     */
    public function createFromConfigData(array $data): ConfigElementInterface
    {
        $fields = isset($data['fields']) ? $this->fieldsFactory->createFromConfigData($data['fields']) : [];

        return $this->create(
            $data,
            $fields
        );
    }

    /**
     * Create input type object based off array of configured GraphQL InputType data.
     *
     * Type data must contain name and the type's fields. Optional data includes description.
     *
     * @param array $typeData
     * @param array $fields
     * @return Input
     */
    private function create(
        array $typeData,
        array $fields
    ): Input {
        return $this->objectManager->create(
            Input::class,
            [
                'name' => $typeData['name'],
                'fields' => $fields,
                'description' => isset($typeData['description']) ? $typeData['description'] : ''
            ]
        );
    }
}