ProofKeyRefresh.php

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<?php
 
declare(strict_types=1);
 
namespace ILIAS\WOPI\Discovery;
 
final class ProofKeyRefresh
{
    public const MIN_INTERVAL = 5 * 60;
    private const LAST_REFRESH = 'wopi_proof_refreshed_at';
 
    private \Closure $clock;
 
    public function __construct(
        private ProofKeyRepository $repository,
        private \ilSetting $settings,
        private \Closure $fetch,
        ?\Closure $clock = null
    ) {
        $this->clock = $clock ?? static fn(): int => time();
    }
 
    public function __invoke(): ?ProofKeys
    {
        $now = ($this->clock)();
        if ($now - (int) $this->settings->get(self::LAST_REFRESH, '0') < self::MIN_INTERVAL) {
            return null;
        }
        $this->settings->set(self::LAST_REFRESH, (string) $now);
 
        try {
            $keys = ($this->fetch)();
        } catch (\Throwable) {
            return null;
        }
        if ($keys === null) {
            return null;
        }
        $this->repository->store($keys);
 
        return $keys;
    }
}