<?php
namespace Incoviba\Controller;

use Incoviba\Common\Implement\Exception\EmptyRedis;
use Incoviba\Service;

trait withRedis
{
    public function fetchRedis(Service\Redis $redisService, string $redisKey): mixed
    {
        $jsonString = $redisService->get($redisKey);
        if ($jsonString === null) {
            throw new EmptyRedis($redisKey);
        }
        return json_decode($jsonString);
    }
    public function saveRedis(Service\Redis $redisService, string $redisKey, mixed $value, ?int $expiration = null): void
    {
        if (is_array($value) or is_object($value)) {
            $value = json_encode($value);
        }
        if ($expiration !== null) {
            $redisService->set($redisKey, $value, $expiration);
            return;
        }
        $redisService->set($redisKey, $value);
    }
}