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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
declare(strict_types=1);
namespace Magento\Csp\Model;
use Magento\Csp\Api\Data\PolicyInterface;
use Magento\Csp\Api\PolicyCollectorInterface;
use Magento\Csp\Model\Collector\MergerInterface;
/**
* Delegates collecting to multiple collectors.
*/
class CompositePolicyCollector implements PolicyCollectorInterface
{
/**
* @var PolicyCollectorInterface[]
*/
private $collectors;
/**
* @var MergerInterface[]
*/
private $mergers;
/**
* @param PolicyCollectorInterface[] $collectors
* @param MergerInterface[] $mergers
*/
public function __construct(array $collectors, array $mergers)
{
$this->collectors = $collectors;
$this->mergers = $mergers;
}
/**
* Merge policies with same IDs and return a list of policies with 1 DTO per policy ID.
*
* @param PolicyInterface[] $collected
* @return PolicyInterface[]
* @throws \RuntimeException When failed to merge.
*/
private function merge(array $collected): array
{
/** @var PolicyInterface[] $merged */
$merged = [];
foreach ($collected as $policy) {
if (array_key_exists($policy->getId(), $merged)) {
foreach ($this->mergers as $merger) {
if ($merger->canMerge($merged[$policy->getId()], $policy)) {
$merged[$policy->getId()] = $merger->merge($merged[$policy->getId()], $policy);
continue 2;
}
}
throw new \RuntimeException(sprintf('Merge for policies #%s was not found', $policy->getId()));
} else {
$merged[$policy->getId()] = $policy;
}
}
return $merged;
}
/**
* @inheritDoc
*/
public function collect(array $defaultPolicies = []): array
{
$collected = $defaultPolicies;
foreach ($this->collectors as $collector) {
$collected = $this->merge($collector->collect($collected));
}
return array_values($collected);
}
}