VITEC-website/packages/vitec/Classes/Widgets/SsrStatusWidget.php

<?php

declare(strict_types=1);

namespace Evomedien\Vitec\Widgets;

use Evomedien\Vitec\Service\SsrPurgeService;
use TYPO3\CMS\Core\Core\Environment;
use TYPO3\CMS\Core\Database\ConnectionPool;
use TYPO3\CMS\Core\Http\RequestFactory;
use TYPO3\CMS\Dashboard\Widgets\WidgetConfigurationInterface;
use TYPO3\CMS\Dashboard\Widgets\WidgetInterface;

/**
 * Dashboard tile: live state of the SSR node on the Solr VPS plus the
 * delivery switch - green/red at a glance after backend login.
 */
final class SsrStatusWidget implements WidgetInterface
{
    public function __construct(
        private readonly WidgetConfigurationInterface $configuration,
        private readonly SsrPurgeService $purgeService,
        private readonly RequestFactory $requestFactory,
        private readonly ConnectionPool $connectionPool,
    ) {}

    public function renderWidgetContent(): string
    {
        $flagOn = file_exists(Environment::getVarPath() . '/vitec-ssr-on.flag');
        $health = $this->fetchHealth();
        $lastPurge = $this->lastPurgeRow();

        $badge = static function (bool $ok, string $yes, string $no): string {
            return $ok
                ? '<span class="badge badge-success">' . htmlspecialchars($yes) . '</span>'
                : '<span class="badge badge-danger">' . htmlspecialchars($no) . '</span>';
        };

        $rows = [];
        $rows[] = ['SSR delivery', $badge($flagOn, 'ON - pages served from the VPS', 'OFF - SPA as before')];
        if ($health === null) {
            $rows[] = ['SSR server', '<span class="badge badge-danger">NOT REACHABLE</span>'];
        } else {
            $rows[] = ['SSR server', $badge((bool)($health['ok'] ?? false), 'running (' . (int)$health['responseMs'] . ' ms)', 'reports errors')];
            $rows[] = ['Release', htmlspecialchars((string)($health['release']['release'] ?? '?'))
                . ' <small>(commit ' . htmlspecialchars((string)($health['release']['commit'] ?? '?'))
                . ', built ' . htmlspecialchars($this->fmtDate((string)($health['release']['builtAt'] ?? ''))) . ')</small>'];
            $rows[] = ['Page cache', (int)($health['cachedPages'] ?? 0) . ' pages / ' . (int)($health['cacheMB'] ?? 0) . ' MB'];
        }
        if ($lastPurge !== null) {
            $rows[] = ['Last purge', htmlspecialchars(date('m-d H:i', (int)$lastPurge['crdate']))
                . ' <small>(' . htmlspecialchars((string)$lastPurge['trigger_source']) . ', '
                . ($lastPurge['success'] ? 'ok' : 'FAILED') . ', '
                . htmlspecialchars(mb_strimwidth((string)$lastPurge['paths'], 0, 60, '…')) . ')</small>'];
        }
        if (!$this->purgeService->isConfigured()) {
            $rows[] = ['Auto purge', '<span class="badge badge-warning">not configured (var/vitec-ssr-purge.env missing)</span>'];
        }

        $html = '<table class="table table-striped table-sm"><tbody>';
        foreach ($rows as [$label, $value]) {
            $html .= '<tr><th style="width:38%">' . htmlspecialchars($label) . '</th><td>' . $value . '</td></tr>';
        }
        $html .= '</tbody></table>';
        $html .= '<p class="text-muted" style="font-size:11px">Switch: Site Management &rsaquo; Settings &rsaquo; VITEC. Module "VITEC SSR" for purge &amp; protocol.</p>';
        return $html;
    }

    public function getOptions(): array
    {
        return [];
    }

    private function fetchHealth(): ?array
    {
        $endpoint = $this->purgeService->getHealthEndpoint();
        if ($endpoint === '') {
            return null;
        }
        $start = microtime(true);
        try {
            $response = $this->requestFactory->request($endpoint, 'GET', [
                'timeout' => 3, 'connect_timeout' => 2, 'http_errors' => false,
            ]);
            if ($response->getStatusCode() !== 200) {
                return null;
            }
            $data = json_decode((string)$response->getBody(), true);
            if (!is_array($data)) {
                return null;
            }
            $data['responseMs'] = (int)round((microtime(true) - $start) * 1000);
            return $data;
        } catch (\Throwable) {
            return null;
        }
    }

    private function lastPurgeRow(): ?array
    {
        try {
            $qb = $this->connectionPool->getQueryBuilderForTable('tx_vitec_ssrpurgelog');
            $row = $qb->select('*')->from('tx_vitec_ssrpurgelog')
                ->orderBy('uid', 'DESC')->setMaxResults(1)
                ->executeQuery()->fetchAssociative();
            return $row ?: null;
        } catch (\Throwable) {
            return null;
        }
    }

    private function fmtDate(string $iso): string
    {
        $ts = strtotime($iso);
        return $ts ? date('Y-m-d H:i', $ts) : '?';
    }
}