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

<?php

declare(strict_types=1);

namespace Evomedien\Vitec\Widgets;

use TYPO3\CMS\Backend\Routing\UriBuilder;
use TYPO3\CMS\Core\Database\ConnectionPool;
use TYPO3\CMS\Core\Utility\GeneralUtility;

/**
 * Shared markup for the three SSR dashboard tiles, in the look of the
 * "VITEC SSR" cockpit module (dark VITEC navy, orange accents).
 * The dashboard inserts widget HTML without running scripts, so rings
 * and bars are drawn here as plain SVG/HTML. Styles:
 * Resources/Public/Css/dashboard-ssr.css (scoped to .vc-widget).
 */
final class CockpitHtml
{
    public const CSS = 'EXT:vitec/Resources/Public/Css/dashboard-ssr.css';

    public static function e(string $value): string
    {
        return htmlspecialchars($value, ENT_QUOTES);
    }

    public static function wrap(string $inner): string
    {
        return '<div class="vc-widget">' . $inner . '</div>';
    }

    public static function pill(string $tone, string $text, string $title = ''): string
    {
        return '<span class="vcw-pill is-' . self::e($tone) . '"'
            . ($title !== '' ? ' title="' . self::e($title) . '"' : '') . '>' . self::e($text) . '</span>';
    }

    /**
     * Ring gauge, 0..1, with a short text in the middle.
     */
    public static function ring(float $fraction, string $tone, string $center, int $size = 76): string
    {
        $c = 2 * M_PI * 40;
        $offset = $c * (1 - max(0.0, min(1.0, $fraction)));
        return '<div class="vcw-ring" style="width:' . $size . 'px;height:' . $size . 'px">'
            . '<svg viewBox="0 0 96 96" width="' . $size . '" height="' . $size . '" aria-hidden="true">'
            . '<circle class="vcw-track" cx="48" cy="48" r="40"/>'
            . '<circle class="vcw-val is-' . self::e($tone) . '" cx="48" cy="48" r="40" stroke-dasharray="'
            . round($c, 2) . '" stroke-dashoffset="' . round($offset, 2) . '"/></svg>'
            . '<span class="vcw-ring-c">' . self::e($center) . '</span></div>';
    }

    /**
     * Same labels and tones as the purge timeline in the module.
     *
     * @return array{0: string, 1: string, 2: string} [label, tone, user]
     */
    public static function trigger(string $source): array
    {
        $who = '';
        if (str_contains($source, ':')) {
            [$source, $who] = explode(':', $source, 2);
        }
        return match ($source) {
            'module' => ['manual', 'orange', $who],
            'contextmenu' => ['context menu', 'navy', $who],
            'editor-save', 'editor-command' => ['auto-purge', 'ok', $who],
            'switch-on' => ['switch-on', 'warn', $who],
            default => [$source, 'sky', $who],
        };
    }

    /**
     * Availability strip of the last 24 hours, 96 windows of 15 minutes,
     * from the health log (cron vitec:ssr-health every 5 minutes).
     *
     * @return array{html: string, uptime: ?float, slow: int, down: int, samples: int}
     */
    public static function strip(ConnectionPool $pool): array
    {
        $slot = 900;
        $end = intdiv(time(), $slot) * $slot + $slot;
        $windows = array_fill(0, 96, null);
        $ok = 0;
        $n = 0;
        try {
            $rows = $pool->getConnectionForTable('tx_vitec_ssrhealthlog')->executeQuery(
                'SELECT crdate, ok, response_ms FROM tx_vitec_ssrhealthlog WHERE crdate > ?',
                [$end - 96 * $slot]
            )->fetchAllAssociative();
        } catch (\Throwable) {
            $rows = [];
        }
        foreach ($rows as $r) {
            $i = 95 - intdiv($end - 1 - (int)$r['crdate'], $slot);
            if ($i < 0 || $i > 95) {
                continue;
            }
            $n++;
            $isOk = (int)$r['ok'] === 1;
            $ok += $isOk ? 1 : 0;
            $state = !$isOk ? 2 : ((int)$r['response_ms'] > 400 ? 1 : 0);
            if ($windows[$i] === null || $state > $windows[$i]['s']) {
                $windows[$i] = ['s' => $state, 'ms' => (int)$r['response_ms']];
            }
        }
        $slow = 0;
        $down = 0;
        $html = '<div class="vcw-bars" role="img" aria-label="Availability of the SSR node over the last 24 hours">';
        foreach ($windows as $i => $w) {
            $from = $end - (96 - $i) * $slot;
            $label = date('H:i', $from) . '–' . date('H:i', $from + $slot) . ' · ';
            if ($w === null) {
                $html .= '<i class="is-none" title="' . self::e($label . 'no sample') . '"></i>';
                continue;
            }
            $cls = ['', 'is-slow', 'is-down'][$w['s']];
            $slow += $w['s'] === 1 ? 1 : 0;
            $down += $w['s'] === 2 ? 1 : 0;
            $text = $w['s'] === 2 ? 'down' : ($w['s'] === 1 ? 'slow, ' : 'ok, ') . ($w['s'] === 2 ? '' : $w['ms'] . ' ms');
            $html .= '<i class="' . $cls . '" title="' . self::e($label . $text) . '"></i>';
        }
        $html .= '</div><div class="vcw-axis"><span>' . date('H:i', $end - 96 * $slot) . '</span><span>'
            . date('H:i', $end - 48 * $slot) . '</span><span>now</span></div>';
        return [
            'html' => $html,
            'uptime' => $n > 0 ? round($ok / $n * 100, 1) : null,
            'slow' => $slow,
            'down' => $down,
            'samples' => $n,
        ];
    }

    public static function moduleLink(string $label = 'Open the SSR cockpit'): string
    {
        try {
            $uri = (string)GeneralUtility::makeInstance(UriBuilder::class)->buildUriFromRoute('web_vitecssr');
        } catch (\Throwable) {
            return '';
        }
        return '<a class="vcw-link" href="' . self::e($uri) . '">' . self::e($label) . ' &rarr;</a>';
    }
}