<?php
// Live board data: locks, recent errors, partner reachability.
header('Content-Type: application/json');
require_once dirname(__DIR__) . '/include/config.php';

$out = ['ok' => true];

// ── Active locks ──────────────────────────────────────────────────────────
$lockDir = '/tmp/unraid_locks';
$locks   = [];
if (is_dir($lockDir)) {
    foreach (glob($lockDir . '/*.lock') ?: [] as $lf) {
        $name    = basename($lf, '.lock');
        $age     = time() - (int)filemtime($lf);
        $content = trim(file_get_contents($lf) ?: '');
        // content is "PID:scriptname" — extract PID
        $pid = preg_match('/^(\d+)/', $content, $pm) ? $pm[1] : '';
        // Skip if PID is still alive (it's legitimately running)
        if ($pid && file_exists("/proc/$pid")) continue;
        $locks[] = ['name' => $name, 'file' => basename($lf), 'age' => $age];
    }
}
$out['locks'] = $locks;

// ── Recent errors ──────────────────────────────────────────────────────────
$errors = [];
if (is_dir(LOG_DIR)) {
    $cutoff = time() - 7 * 86400; // only logs touched in last 7 days
    foreach (glob(LOG_DIR . '/*.log') ?: [] as $lf) {
        if (filemtime($lf) < $cutoff) continue;
        $script = basename($lf, '.log');
        $lines  = array_slice(@file($lf) ?: [], -200);
        $lastErr = null;
        foreach (array_reverse($lines) as $raw) {
            // Strip ANSI escape codes
            $clean = preg_replace('/\033\[[0-9;]*[mK]/', '', rtrim($raw));
            if (!$clean) continue;
            if (preg_match('/\[(?:ERROR|WARN|CRITICAL|FAILED)\]/i', $clean) ||
                preg_match('/\b(?:ERROR|CRITICAL|FAILED):\s/i', $clean) ||
                str_contains($clean, '✗') ||
                (str_contains($clean, '⚠') && !str_contains($clean, '♥'))) {
                $lastErr = mb_substr($clean, 0, 220);
                break;
            }
        }
        if ($lastErr !== null) {
            $errors[] = ['script' => $script, 'line' => $lastErr, 'ts' => (int)filemtime($lf)];
        }
    }
    usort($errors, fn($a, $b) => $b['ts'] - $a['ts']);
}
$out['errors'] = array_slice($errors, 0, 20);

// ── Partner reachability ───────────────────────────────────────────────────
$cacheFile = '/tmp/vv_partner_cache.json';
$cacheTtl  = 30;
$partnerData = null;

if (file_exists($cacheFile) && (time() - (int)filemtime($cacheFile)) < $cacheTtl) {
    $partnerData = json_decode(file_get_contents($cacheFile), true);
} else {
    $confRaw = vv_read_conf_raw('master.conf');
    preg_match('/^\s*HOST1(?:_NAME)?\s*=\s*["\']?(\S+?)["\']?\s*(?:#.*)?$/m', $confRaw, $m1);
    preg_match('/^\s*HOST2(?:_NAME)?\s*=\s*["\']?(\S+?)["\']?\s*(?:#.*)?$/m', $confRaw, $m2);
    $host1 = $m1[1] ?? '';
    $host2 = $m2[1] ?? '';
    $mine  = vv_get_hostname();
    $partnerHost = null;
    if ($mine && $host1 && strcasecmp($mine, $host1) === 0) $partnerHost = $host2;
    if ($mine && $host2 && strcasecmp($mine, $host2) === 0) $partnerHost = $host1;

    if ($partnerHost) {
        $start   = microtime(true);
        $result  = shell_exec('ping -c1 -W1 ' . escapeshellarg($partnerHost) . ' 2>&1');
        $elapsed = (int)round((microtime(true) - $start) * 1000);
        $reached = str_contains((string)$result, '1 received')
                || str_contains((string)$result, '1 packets received');
        $partnerData = [
            'host'      => $partnerHost,
            'reachable' => $reached,
            'latency'   => $reached ? $elapsed : null,
        ];
        @file_put_contents($cacheFile, json_encode($partnerData));
    }
}
$out['partner'] = $partnerData;

echo json_encode($out);