<?php
/**
 * WEVAL Services Live Status API V96.20
 * 
 * User WTP admin-v2: Loki affiché ROUGE 18021ms mais alert dit LIVE 3 days
 * Root cause: admin-v2.html SERVICES hardcoded line 102 avec s:'up' statique
 * Many services afficherait `---` sans vraie donnée
 * 
 * This API returns TRUE live status for 23 services by probing each one.
 */
header('Content-Type: application/json; charset=utf-8');
header('Access-Control-Allow-Origin: *');

function probe_port($host, $port, $timeout = 2) {
    $start = microtime(true);
    $conn = @fsockopen($host, $port, $errno, $errstr, $timeout);
    $ms = round((microtime(true) - $start) * 1000);
    if ($conn) { fclose($conn); return ['up' => true, 'ms' => $ms]; }
    return ['up' => false, 'ms' => $ms, 'err' => $errstr];
}

function probe_http($url, $timeout = 3) {
    $start = microtime(true);
    $ch = curl_init($url);
    curl_setopt_array($ch, [
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_TIMEOUT => $timeout,
        CURLOPT_NOBODY => false,
        CURLOPT_SSL_VERIFYPEER => false,
        CURLOPT_SSL_VERIFYHOST => false,
    ]);
    curl_exec($ch);
    $code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    $ms = round((microtime(true) - $start) * 1000);
    curl_close($ch);
    return ['up' => ($code >= 200 && $code < 500), 'ms' => $ms, 'code' => $code];
}

function probe_systemd($unit) {
    exec("systemctl is-active $unit 2>&1", $o);
    $status = trim($o[0] ?? '');
    return ['up' => ($status === 'active'), 'status' => $status];
}

function probe_docker($name) {
    exec("docker ps --filter name=$name --format '{{.Status}}' 2>&1", $o);
    $status = trim(implode(' ', $o));
    $up = (strpos($status, 'Up') !== false);
    return ['up' => $up, 'status' => $status ?: 'not found'];
}

// 23 services from admin-v2 — verify each
$services = [
    // systemd / nginx / FPM
    ['n' => 'Nginx', 'p' => ':80/:443', 't' => 'system', 'probe' => 'http://localhost'],
    ['n' => 'Apache', 'p' => ':5890/:8443', 't' => 'system', 'probe' => 'http://localhost:5890'],
    ['n' => 'PHP-FPM 8.5', 'p' => ':socket', 't' => 'systemd', 'systemd' => 'php8.5-fpm'],
    // LLM + APIs
    ['n' => 'Sovereign API', 'p' => ':4000', 't' => 'systemd', 'probe' => 'http://localhost:4000/v1/models'],
    ['n' => 'Ollama', 'p' => ':11434', 't' => 'systemd', 'probe' => 'http://localhost:11434/api/tags'],
    ['n' => 'Paperclip', 'p' => ':3100', 't' => 'systemd', 'probe' => 'http://localhost:3100'],
    ['n' => 'DeerFlow', 'p' => ':3002/:3003', 't' => 'systemd', 'probe' => 'http://localhost:3002'],
    // Docker containers
    ['n' => 'Loki', 'p' => ':3100 (container)', 't' => 'docker', 'docker' => 'loki'],
    ['n' => 'Gitea', 'p' => ':3300', 't' => 'docker', 'docker' => 'gitea'],
    ['n' => 'Qdrant', 'p' => ':6333', 't' => 'docker', 'docker' => 'qdrant'],
    ['n' => 'Mattermost', 'p' => ':8065', 't' => 'docker', 'docker' => 'mattermost'],
    ['n' => 'Twenty CRM', 'p' => ':3000', 't' => 'docker', 'docker' => 'twenty'],
    ['n' => 'Langfuse', 'p' => ':3333', 't' => 'docker', 'docker' => 'langfuse'],
    ['n' => 'Prometheus', 'p' => ':9090', 't' => 'docker', 'docker' => 'prometheus'],
    ['n' => 'Uptime-Kuma', 'p' => ':3001', 't' => 'docker', 'docker' => 'uptime-kuma'],
    ['n' => 'Vaultwarden', 'p' => ':8222', 't' => 'docker', 'docker' => 'vaultwarden'],
    ['n' => 'Redis-Weval', 'p' => ':6379', 't' => 'docker', 'docker' => 'redis-weval'],
    ['n' => 'SearXNG', 'p' => ':8080', 't' => 'docker', 'docker' => 'searxng'],
    ['n' => 'Plausible', 'p' => ':8000', 't' => 'docker', 'docker' => 'plausible'],
    ['n' => 'n8n', 'p' => ':5678', 't' => 'docker', 'docker' => 'n8n'],
    ['n' => 'Listmonk', 'p' => ':9000', 't' => 'docker', 'docker' => 'listmonk'],
    // PG + Email infra
    ['n' => 'PostgreSQL', 'p' => ':5432', 't' => 'systemd', 'systemd' => 'postgresql'],
    // Security
    ['n' => 'Fail2Ban', 'p' => 'daemon', 't' => 'systemd', 'systemd' => 'fail2ban'],
];

$results = [];
$up_count = 0;
$total_ms = 0;

foreach ($services as $s) {
    $r = null;
    if (!empty($s['probe'])) {
        $r = probe_http($s['probe']);
    } elseif (!empty($s['docker'])) {
        $r = probe_docker($s['docker']);
    } elseif (!empty($s['systemd'])) {
        $r = probe_systemd($s['systemd']);
    }
    
    $entry = [
        'n' => $s['n'],
        'p' => $s['p'],
        't' => $s['t'],
        's' => ($r && !empty($r['up'])) ? 'up' : 'down',
    ];
    if (isset($r['ms'])) { $entry['ms'] = $r['ms']; $total_ms += $r['ms']; }
    if (isset($r['status'])) $entry['detail'] = $r['status'];
    if (isset($r['code'])) $entry['code'] = $r['code'];
    
    if ($entry['s'] === 'up') $up_count++;
    $results[] = $entry;
}

$total = count($results);
$uptime_pct = $total > 0 ? round(($up_count / $total) * 100, 1) : 0;

echo json_encode([
    'v' => 'V96.20-services-live-opus',
    'ts' => date('c'),
    'total' => $total,
    'up' => $up_count,
    'down' => $total - $up_count,
    'uptime_pct' => $uptime_pct,
    'avg_latency_ms' => $total > 0 ? round($total_ms / $total) : 0,
    'services' => $results,
], JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);