<?php


namespace Symfony\Component\Cache\Adapter;

use Psr\SimpleCache\CacheInterface;
use Symfony\Component\Cache\PruneableInterface;
use Symfony\Component\Cache\ResettableInterface;
use Symfony\Component\Cache\Traits\ProxyTrait;


class Psr16Adapter extends AbstractAdapter implements PruneableInterface, ResettableInterface
{
    use ProxyTrait;

    
    protected const NS_SEPARATOR = '_';

    private object $miss;

    public function __construct(CacheInterface $pool, string $namespace = '', int $defaultLifetime = 0)
    {
        parent::__construct($namespace, $defaultLifetime);

        $this->pool = $pool;
        $this->miss = new \stdClass();
    }

    protected function doFetch(array $ids): iterable
    {
        foreach ($this->pool->getMultiple($ids, $this->miss) as $key => $value) {
            if ($this->miss !== $value) {
                yield $key => $value;
            }
        }
    }

    protected function doHave(string $id): bool
    {
        return $this->pool->has($id);
    }

    protected function doClear(string $namespace): bool
    {
        return $this->pool->clear();
    }

    protected function doDelete(array $ids): bool
    {
        return $this->pool->deleteMultiple($ids);
    }

    protected function doSave(array $values, int $lifetime): array|bool
    {
        return $this->pool->setMultiple($values, 0 === $lifetime ? null : $lifetime);
    }
}