kodedphp / cache-extended

<?php

namespace Koded\Caching;

use Psr\Cache\CacheItemInterface;

abstract class CacheItem implements CacheItemInterface

{

    protected bool $isHit = false;

    private string $key;

    private mixed $value = null;

    private ?int $expiresAt;

    public function __construct($key, ?int $ttl)

    {

        $this->key = $key;

        $this->expiresAt = $ttl;

    }

    public function getKey(): string

    {

        return $this->key;

    }

    public function get()

    {

        return $this->value;

    }

    public function isHit(): bool

    {

        return $this->isHit;

    }

    public function set($value)

    {

        $this->value = $value;

        return $this;

    }

    public function expiresAfter($time): static

    {

        // The TTL is calculated in the cache client instance

        return $this->expiresAt($time);

    }

    public function expiresAt($expiration): static

    {

        $this->expiresAt = normalize_ttl($expiration ?? $this->expiresAt);

        if ($this->expiresAt < 1) {

            $this->isHit = false;

        }

        return $this;

    }

    /**

     * Returns expiration seconds for the cache item.

     * NULL is reserved for clients who do not support expiry

     * to implement some custom logic around the TTL.

     *

     * This method is not part of the PSR-6.

     *

     * @return int|null

     */

    public function getExpiresAt(): ?int

    {

        return $this->expiresAt;

    }

}