<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Framework\View\Asset\PreProcessor;

use Magento\Framework\Code\Minifier\AdapterInterface;
use Magento\Framework\View\Asset\Minification;
use Magento\Framework\View\Asset\PreProcessor;
use Magento\Framework\View\Asset\PreProcessorInterface;

/**
* Assets minification pre-processor
*/
class Minify implements PreProcessorInterface
{
/**
* @var AdapterInterface
*/
protected $adapter;

/**
* @var Minification
*/
protected $minification;

/**
* @var MinificationConfigProvider
*/
private $minificationConfig;

/**
* @param AdapterInterface $adapter
* @param Minification $minification
* @param MinificationConfigProvider $minificationConfig
*/
public function __construct(
AdapterInterface $adapter,
Minification $minification,
MinificationConfigProvider $minificationConfig
) {
$this->adapter = $adapter;
$this->minification = $minification;
$this->minificationConfig = $minificationConfig;
}

/**
* Transform content and/or content type for the specified preprocessing chain object
*
* @param PreProcessor\Chain $chain
* @return void
*/
public function process(PreProcessor\Chain $chain)
{
if ($this->minificationConfig->isMinificationEnabled($chain->getTargetAssetPath()) &&
$this->minification->isMinifiedFilename($chain->getTargetAssetPath()) &&
!$this->minification->isMinifiedFilename($chain->getOrigAssetPath())
) {
$content = $this->adapter->minify($chain->getContent());
$chain->setContent($content);
}
}
}