<?php

declare(strict_types=1);

namespace Domovoy\Services\Discovery;

class PingScanner
{
    /**
     * Check if host is alive via ICMP ping.
     * Requires ping command in container.
     */
    public function ping(string $ip, int $timeoutMs = 500): bool
    {
        // Use ping with timeout (Linux: -W in seconds)
        $timeoutSec = max(1, (int)ceil($timeoutMs / 1000));
        $output = [];
        $exitCode = 0;
        exec(sprintf('ping -c 1 -W %d %s 2>/dev/null', $timeoutSec, escapeshellarg($ip)), $output, $exitCode);
        return $exitCode === 0;
    }
}