<?php
declare(strict_types=1);

namespace MageSail\Magesail\Cron;

use Magento\Framework\App\Config\ScopeConfigInterface;
use Psr\Log\LoggerInterface;
use MageSail\Magesail\Model\MagesailLog;
use MageSail\Magesail\Model\TunnelManager;
use MageSail\Magesail\Model\TunnelProcessPaths;
use MageSail\Magesail\Model\TunnelRegistry;
use MageSail\Magesail\Model\TunnelStatus;

class DailyMonitor
{
    private const XML_AUTO_RESTART = 'magesail/settings/auto_restart';

    public function __construct(
        private readonly LoggerInterface $logger,
        private readonly TunnelStatus $tunnelStatus,
        private readonly TunnelManager $tunnelManager,
        private readonly ScopeConfigInterface $scopeConfig,
        private readonly MagesailLog $magesailLog,
        private readonly TunnelRegistry $tunnelRegistry,
        private readonly TunnelProcessPaths $tunnelProcessPaths
    ) {
    }

    public function execute(): void
    {
        $autoRestart = (bool) $this->scopeConfig->getValue(self::XML_AUTO_RESTART);

        foreach ($this->tunnelRegistry->listTunnels() as $tunnel) {
            $tunnelId = (string) ($tunnel['id'] ?? '');
            if ($tunnelId === '') {
                continue;
            }
            $pidFile = $this->tunnelProcessPaths->getPidFilePath($tunnelId);
            if (!\is_file($pidFile)) {
                continue;
            }
            $pid = (int) trim((string) file_get_contents($pidFile));
            $wasRunning = $pid > 0 && $this->tunnelStatus->isProcessAlive($pid);
            if ($wasRunning) {
                continue;
            }

            $this->tunnelStatus->cleanupStaleStateForTunnel($tunnelId);
            $this->magesailLog->add(sprintf('Cron: tunnel %s process gone; cleaned PID/key files', $tunnelId));
            $this->logger->warning(sprintf('MageSail tunnel %s crashed; cleaned up PID files.', $tunnelId));

            if ($autoRestart) {
                $result = $this->tunnelManager->start($tunnelId);
                if ($result['ok'] ?? false) {
                    $this->magesailLog->add(sprintf('Cron auto-restart OK tunnel %s PID %s', $tunnelId, $result['pid'] ?? ''));
                    $this->logger->info(sprintf('MageSail tunnel %s auto-restarted by cron.', $tunnelId));
                } else {
                    $this->magesailLog->add(sprintf(
                        'Cron auto-restart failed tunnel %s: %s',
                        $tunnelId,
                        $result['error'] ?? 'unknown'
                    ));
                    $this->logger->warning(sprintf(
                        'MageSail auto-restart failed for %s: %s',
                        $tunnelId,
                        $result['error'] ?? ''
                    ));
                }
            }
        }

        $this->logger->info('MageSail cron monitor executed.');
    }
}