<?php

namespace App\Service\Cron;

use Doctrine\DBAL\Exception;
use Doctrine\ORM\EntityManagerInterface;
use Psr\Log\LoggerInterface;

class FlushLogsService
{
    public function __construct(
        private readonly EntityManagerInterface $entityManager,
        private readonly LoggerInterface $logger,
    ) {
    }

    public function flush(): array
    {
        // Deletes all log entries older than 30 days
        $dueDate = (new \DateTimeImmutable())->modify('-30 days');

        try {
            $result = $this
                ->entityManager
                ->getConnection()
                ->executeQuery('DELETE FROM log WHERE log.timestamp < ?', [$dueDate->format('Y-m-d H:i:s')]);
            $message = 'Deleted '.$result->rowCount().' log entries';
            $success = true;
            $this->logger->info($message);
        } catch (Exception $e) {
            $message = 'Unable to delete log entries: '.$e->getMessage();
            $success = false;
            $this->logger->error($message);
        }

        return [$success, $message];
    }
}