<?php

namespace BuddyBossPlatform\Doctrine\Common\Cache;

use Traversable;
use function array_values;
use function count;
use function iterator_to_array;
/**
 * Cache provider that allows to easily chain multiple cache providers
 *
 * @deprecated Deprecated without replacement in doctrine/cache 1.11. This class will be dropped in 2.0
 */
class ChainCache extends CacheProvider
{
    /** @var CacheProvider[] */
    private $cacheProviders = [];
    /** @var int */
    private $defaultLifeTimeForDownstreamCacheProviders = 0;
    /**
     * @param CacheProvider[] $cacheProviders
     */
    public function __construct($cacheProviders = [])
    {
        $this->cacheProviders = $cacheProviders instanceof Traversable ? iterator_to_array($cacheProviders, \false) : array_values($cacheProviders);
    }
    public function setDefaultLifeTimeForDownstreamCacheProviders(int $defaultLifeTimeForDownstreamCacheProviders) : void
    {
        $this->defaultLifeTimeForDownstreamCacheProviders = $defaultLifeTimeForDownstreamCacheProviders;
    }
    /**
     * {@inheritDoc}
     */
    public function setNamespace($namespace)
    {
        parent::setNamespace($namespace);
        foreach ($this->cacheProviders as $cacheProvider) {
            $cacheProvider->setNamespace($namespace);
        }
    }
    /**
     * {@inheritDoc}
     */
    protected function doFetch($id)
    {
        foreach ($this->cacheProviders as $key => $cacheProvider) {
            if ($cacheProvider->doContains($id)) {
                $value = $cacheProvider->doFetch($id);
                // We populate all the previous cache layers (that are assumed to be faster)
                for ($subKey = $key - 1; $subKey >= 0; $subKey--) {
                    $this->cacheProviders[$subKey]->doSave($id, $value, $this->defaultLifeTimeForDownstreamCacheProviders);
                }
                return $value;
            }
        }
        return \false;
    }
    /**
     * {@inheritdoc}
     */
    protected function doFetchMultiple(array $keys)
    {
        /** @var CacheProvider[] $traversedProviders */
        $traversedProviders = [];
        $keysCount = count($keys);
        $fetchedValues = [];
        foreach ($this->cacheProviders as $key => $cacheProvider) {
            $fetchedValues = $cacheProvider->doFetchMultiple($keys);
            // We populate all the previous cache layers (that are assumed to be faster)
            if (count($fetchedValues) === $keysCount) {
                foreach ($traversedProviders as $previousCacheProvider) {
                    $previousCacheProvider->doSaveMultiple($fetchedValues, $this->defaultLifeTimeForDownstreamCacheProviders);
                }
                return $fetchedValues;
            }
            $traversedProviders[] = $cacheProvider;
        }
        return $fetchedValues;
    }
    /**
     * {@inheritDoc}
     */
    protected function doContains($id)
    {
        foreach ($this->cacheProviders as $cacheProvider) {
            if ($cacheProvider->doContains($id)) {
                return \true;
            }
        }
        return \false;
    }
    /**
     * {@inheritDoc}
     */
    protected function doSave($id, $data, $lifeTime = 0)
    {
        $stored = \true;
        foreach ($this->cacheProviders as $cacheProvider) {
            $stored = $cacheProvider->doSave($id, $data, $lifeTime) && $stored;
        }
        return $stored;
    }
    /**
     * {@inheritdoc}
     */
    protected function doSaveMultiple(array $keysAndValues, $lifetime = 0)
    {
        $stored = \true;
        foreach ($this->cacheProviders as $cacheProvider) {
            $stored = $cacheProvider->doSaveMultiple($keysAndValues, $lifetime) && $stored;
        }
        return $stored;
    }
    /**
     * {@inheritDoc}
     */
    protected function doDelete($id)
    {
        $deleted = \true;
        foreach ($this->cacheProviders as $cacheProvider) {
            $deleted = $cacheProvider->doDelete($id) && $deleted;
        }
        return $deleted;
    }
    /**
     * {@inheritdoc}
     */
    protected function doDeleteMultiple(array $keys)
    {
        $deleted = \true;
        foreach ($this->cacheProviders as $cacheProvider) {
            $deleted = $cacheProvider->doDeleteMultiple($keys) && $deleted;
        }
        return $deleted;
    }
    /**
     * {@inheritDoc}
     */
    protected function doFlush()
    {
        $flushed = \true;
        foreach ($this->cacheProviders as $cacheProvider) {
            $flushed = $cacheProvider->doFlush() && $flushed;
        }
        return $flushed;
    }
    /**
     * {@inheritDoc}
     */
    protected function doGetStats()
    {
        // We return all the stats from all adapters
        $stats = [];
        foreach ($this->cacheProviders as $cacheProvider) {
            $stats[] = $cacheProvider->doGetStats();
        }
        return $stats;
    }
}
