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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
declare(strict_types=1);
namespace Magento\Catalog\Model\Product\Attribute;
use Magento\Catalog\Api\Data\ProductInterface;
use Magento\Catalog\Model\Product;
use Magento\Framework\App\Area;
use Magento\Framework\DataObject;
use Magento\Framework\View\Design\Theme\FlyweightFactory;
use Magento\Framework\View\DesignInterface;
use Magento\Framework\View\Model\Layout\Merge as LayoutProcessor;
use Magento\Framework\View\Model\Layout\MergeFactory as LayoutProcessorFactory;
/**
* Manage available layout updates for products.
*/
class LayoutUpdateManager
{
/**
* @var FlyweightFactory
*/
private $themeFactory;
/**
* @var DesignInterface
*/
private $design;
/**
* @var LayoutProcessorFactory
*/
private $layoutProcessorFactory;
/**
* @var LayoutProcessor|null
*/
private $layoutProcessor;
/**
* @param FlyweightFactory $themeFactory
* @param DesignInterface $design
* @param LayoutProcessorFactory $layoutProcessorFactory
*/
public function __construct(
FlyweightFactory $themeFactory,
DesignInterface $design,
LayoutProcessorFactory $layoutProcessorFactory
) {
$this->themeFactory = $themeFactory;
$this->design = $design;
$this->layoutProcessorFactory = $layoutProcessorFactory;
}
/**
* Adopt product's SKU to be used as layout handle.
*
* @param ProductInterface $product
* @return string
*/
private function sanitizeSku(ProductInterface $product): string
{
return rawurlencode($product->getSku());
}
/**
* Get the processor instance.
*
* @return LayoutProcessor
*/
private function getLayoutProcessor(): LayoutProcessor
{
if (!$this->layoutProcessor) {
$this->layoutProcessor = $this->layoutProcessorFactory->create(
[
'theme' => $this->themeFactory->create(
$this->design->getConfigurationDesignTheme(Area::AREA_FRONTEND)
)
]
);
$this->themeFactory = null;
$this->design = null;
}
return $this->layoutProcessor;
}
/**
* Fetch list of available files/handles for the product.
*
* @param ProductInterface $product
* @return string[]
*/
public function fetchAvailableFiles(ProductInterface $product): array
{
if (!$product->getSku()) {
return [];
}
$identifier = $this->sanitizeSku($product);
$handles = $this->getLayoutProcessor()->getAvailableHandles();
return array_filter(
array_map(
function (string $handle) use ($identifier) : ?string {
preg_match(
'/^catalog\_product\_view\_selectable\_' .preg_quote($identifier) .'\_([a-z0-9]+)/i',
$handle,
$selectable
);
if (!empty($selectable[1])) {
return $selectable[1];
}
return null;
},
$handles
)
);
}
/**
* Extract custom layout attribute value.
*
* @param ProductInterface $product
* @return mixed
*/
private function extractAttributeValue(ProductInterface $product)
{
if ($product instanceof Product && !$product->hasData(ProductInterface::CUSTOM_ATTRIBUTES)) {
return $product->getData('custom_layout_update_file');
}
if ($attr = $product->getCustomAttribute('custom_layout_update_file')) {
return $attr->getValue();
}
return null;
}
/**
* Extract selected custom layout settings.
*
* If no update is selected none will apply.
*
* @param ProductInterface $product
* @param DataObject $intoSettings
* @return void
*/
public function extractCustomSettings(ProductInterface $product, DataObject $intoSettings): void
{
if ($product->getSku() && $value = $this->extractAttributeValue($product)) {
$handles = $intoSettings->getPageLayoutHandles() ?? [];
$handles = array_merge_recursive(
$handles,
['selectable' => $this->sanitizeSku($product) . '_' . $value]
);
$intoSettings->setPageLayoutHandles($handles);
}
}
}