<?php

declare(strict_types=1);

/**
 * CLI worker for running pending scan jobs.
 *
 * Usage:
 *   php bin/run-scan-worker.php          # Run one pending job and exit
 *   php bin/run-scan-worker.php --loop   # Infinite loop, process all pending jobs
 */

require dirname(__DIR__) . '/vendor/autoload.php';

$dotenv = \Dotenv\Dotenv::createImmutable(dirname(__DIR__));
$dotenv->safeLoad();

$pdo = new PDO(
    sprintf(
        'mysql:host=%s;port=%d;dbname=%s;charset=utf8mb4',
        getenv('DB_HOST') ?: 'db',
        (int)(getenv('DB_PORT') ?: 3306),
        getenv('DB_DATABASE') ?: 'domovoy'
    ),
    getenv('DB_USERNAME') ?: 'domovoy',
    getenv('DB_PASSWORD') ?: 'domovoy',
    [
        PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
        PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
        PDO::ATTR_EMULATE_PREPARES => false,
    ]
);

// Build dependencies manually (no DI container in CLI)
$logger = new \Monolog\Logger('domovoy');
$logger->pushHandler(new \Monolog\Handler\StreamHandler(dirname(__DIR__) . '/storage/logs/scan-worker.log', \Monolog\Level::Debug));

$networkRangeRepository = new \Domovoy\Repositories\NetworkRangeRepository($pdo);
$scanJobRepository = new \Domovoy\Repositories\ScanJobRepository($pdo);
$discoveredHostRepository = new \Domovoy\Repositories\DiscoveredHostRepository($pdo);

$pingScanner = new \Domovoy\Services\Discovery\PingScanner();
$tcpPortScanner = new \Domovoy\Services\Discovery\TcpPortScanner();
$arpTableReader = new \Domovoy\Services\Discovery\ArpTableReader();
$fingerprintService = new \Domovoy\Services\Discovery\HostFingerprintService();

$networkScanner = new \Domovoy\Services\Discovery\NetworkScanner(
    $pingScanner,
    $tcpPortScanner,
    $arpTableReader,
    $fingerprintService,
    $discoveredHostRepository
);

$runner = new \Domovoy\Services\Jobs\ScanJobRunner($scanJobRepository, $networkScanner, $networkRangeRepository);

$loopMode = in_array('--loop', $argv, true);

if ($loopMode) {
    echo "Scan worker running in loop mode. Press Ctrl+C to stop.\n";
    $logger->info('Scan worker started in loop mode');

    // Handle SIGTERM for graceful shutdown
    if (function_exists('pcntl_signal')) {
        pcntl_signal(SIGTERM, function () use ($logger) {
            $logger->info('Received SIGTERM, shutting down gracefully');
            exit(0);
        });
    }

    while (true) {
        $job = $runner->runNext();
        if ($job === null) {
            sleep(5);
            continue;
        }
        $logger->info('Scan job completed', ['job_id' => $job->id, 'status' => $job->status]);
        if (function_exists('pcntl_signal_dispatch')) {
            pcntl_signal_dispatch();
        }
    }
} else {
    $job = $runner->runNext();
    if ($job === null) {
        echo "No pending scan jobs found.\n";
    } else {
        echo "Scan job #{$job->id} completed: {$job->status}\n";
        if ($job->errorMessage !== null) {
            echo "Error: {$job->errorMessage}\n";
        }
    }
}