<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
namespace Magento\Catalog\Model\Category;

use Magento\Catalog\Api\CategoryAttributeRepositoryInterface;
use Magento\Framework\App\State\ReloadProcessorInterface;

class AttributeRepository implements CategoryAttributeRepositoryInterface, ReloadProcessorInterface
{
    /**
     * @var \Magento\Framework\Api\SearchCriteriaBuilder
     */
    protected $searchCriteriaBuilder;

    /**
     * @var \Magento\Framework\Api\FilterBuilder
     */
    protected $filterBuilder;

    /**
     * @var \Magento\Eav\Api\AttributeRepositoryInterface
     */
    protected $eavAttributeRepository;

    /**
     * @var \Magento\Eav\Model\Config
     */
    private $eavConfig;

    /**
     * @var array|null
     */
    private $metadataCache;

    /**
     * @param \Magento\Framework\Api\SearchCriteriaBuilder $searchCriteriaBuilder
     * @param \Magento\Framework\Api\FilterBuilder $filterBuilder
     * @param \Magento\Eav\Api\AttributeRepositoryInterface $eavAttributeRepository
     * @param \Magento\Eav\Model\Config $eavConfig
     */
    public function __construct(
        \Magento\Framework\Api\SearchCriteriaBuilder $searchCriteriaBuilder,
        \Magento\Framework\Api\FilterBuilder $filterBuilder,
        \Magento\Eav\Api\AttributeRepositoryInterface $eavAttributeRepository,
        \Magento\Eav\Model\Config $eavConfig
    ) {
        $this->searchCriteriaBuilder = $searchCriteriaBuilder;
        $this->filterBuilder = $filterBuilder;
        $this->eavAttributeRepository = $eavAttributeRepository;
        $this->eavConfig = $eavConfig;
    }

    /**
     * @inheritdoc
     */
    public function getList(\Magento\Framework\Api\SearchCriteriaInterface $searchCriteria)
    {
        return $this->eavAttributeRepository->getList(
            \Magento\Catalog\Api\Data\CategoryAttributeInterface::ENTITY_TYPE_CODE,
            $searchCriteria
        );
    }

    /**
     * @inheritdoc
     */
    public function get($attributeCode)
    {
        return $this->eavAttributeRepository->get(
            \Magento\Catalog\Api\Data\CategoryAttributeInterface::ENTITY_TYPE_CODE,
            $attributeCode
        );
    }

    /**
     * @inheritdoc
     *
     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
     */
    public function getCustomAttributesMetadata($dataObjectClassName = null)
    {
        if (!isset($this->metadataCache[$dataObjectClassName])) {
            $defaultAttributeSetId = $this->eavConfig
                ->getEntityType(\Magento\Catalog\Api\Data\CategoryAttributeInterface::ENTITY_TYPE_CODE)
                ->getDefaultAttributeSetId();
            $searchCriteria = $this->searchCriteriaBuilder->addFilters(
                [
                    $this->filterBuilder
                        ->setField('attribute_set_id')
                        ->setValue($defaultAttributeSetId)
                        ->create(),
                ]
            );
            $this->metadataCache[$dataObjectClassName] = $this->getList($searchCriteria->create())
                ->getItems();
        }
        return $this->metadataCache[$dataObjectClassName];
    }

    /**
     * @inheritDoc
     */
    public function reloadState(): void
    {
        $this->filterBuilder->_resetState();
        $this->searchCriteriaBuilder->_resetState();
        $this->metadataCache = null;
    }
}