<?php
/**
* Mirasvit
*
* This source file is subject to the Mirasvit Software License, which is available at https://mirasvit.com/license/.
* Do not edit or add to this file if you wish to upgrade the to newer versions in the future.
* If you wish to customize this module for your needs.
* Please refer to http://www.magentocommerce.com for more information.
*
* @category Mirasvit
* @package mirasvit/module-search-ultimate
* @version 2.0.25
* @copyright Copyright (C) 2021 Mirasvit (https://mirasvit.com/)
*/



namespace Mirasvit\SearchMysql\Model\ResourceModel;

use Magento\CatalogSearch\Model\ResourceModel\EngineInterface;

class Engine implements EngineInterface
{
/**
* @deprecated
* @see EngineInterface::FIELD_PREFIX
*/
const ATTRIBUTE_PREFIX = 'attr_';

/**
* Scope identifier
* @deprecated
* @see EngineInterface::SCOPE_IDENTIFIER
*/
const SCOPE_FIELD_NAME = 'scope';

/**
* Catalog product visibility
* @var \Magento\Catalog\Model\Product\Visibility
*/
protected $catalogProductVisibility;

/**
* @var \Magento\Framework\Indexer\ScopeResolver\IndexScopeResolver
*/
private $indexScopeResolver;

/**
* Is attribute filterable as term cache
* @var array
*/
private $termFilterableAttributeAttributeCache = [];

/**
* Engine constructor.
*
* @param \Magento\Catalog\Model\Product\Visibility $catalogProductVisibility
* @param \Magento\Framework\Indexer\ScopeResolver\IndexScopeResolver $indexScopeResolver
*/
public function __construct(
\Magento\Catalog\Model\Product\Visibility $catalogProductVisibility,
\Magento\Framework\Indexer\ScopeResolver\IndexScopeResolver $indexScopeResolver
) {
$this->catalogProductVisibility = $catalogProductVisibility;
$this->indexScopeResolver = $indexScopeResolver;
}

/**
* Retrieve allowed visibility values for current engine
* @return int[]
*/
public function getAllowedVisibility()
{
return $this->catalogProductVisibility->getVisibleInSiteIds();
}

/**
* Define if current search engine supports advanced index
* @return bool
*/
public function allowAdvancedIndex()
{
return true;
}

/**
* @inheritdoc
*/
public function processAttributeValue($attribute, $value)
{
if ($attribute->getIsSearchable()
&& in_array($attribute->getFrontendInput(), ['text', 'textarea'])
) {
return $value;
} elseif ($this->isTermFilterableAttribute($attribute)
|| in_array($attribute->getAttributeCode(), ['visibility', 'status'])
) {
if ($attribute->getFrontendInput() == 'multiselect') {
$value = explode(',', (string)$value);
}
if (!is_array($value)) {
$value = [$value];
}
$valueMapper = function ($value) use ($attribute) {
return Engine::ATTRIBUTE_PREFIX . $attribute->getAttributeCode() . '_' . $value;
};

return implode(' ', array_map($valueMapper, $value));
}
}

/**
* Is Attribute Filterable as Term
*
* @param \Magento\Catalog\Model\Entity\Attribute|\Magento\Eav\Model\Entity\Attribute $attribute
*
* @return bool
*/
private function isTermFilterableAttribute($attribute)
{
$attributeId = $attribute->getAttributeId();
if (!isset($this->termFilterableAttributeAttributeCache[$attributeId])) {
$this->termFilterableAttributeAttributeCache[$attributeId]
= in_array($attribute->getFrontendInput(), ['select', 'multiselect'], true)
&& ($attribute->getIsVisibleInAdvancedSearch()
|| $attribute->getIsFilterable()
|| $attribute->getIsFilterableInSearch());
}

return $this->termFilterableAttributeAttributeCache[$attributeId];
}

/**
* Prepare index array as a string glued by separator
* Support 2 level array gluing
*
* @param array $index
* @param string $separator
*
* @return array
*/
public function prepareEntityIndex($index, $separator = ' ')
{
$indexData = [];
foreach ($index as $attributeId => $value) {
$indexData[$attributeId] = is_array($value) ? implode($separator, $value) : $value;
}

return $indexData;
}

/**
* @inheritdoc
*/
public function isAvailable()
{
return true;
}
}