<?php
require_once __DIR__ . "/../../config/bootstrap.php";
require_once __DIR__ . '/../../src/AdminAuth.php';
require_once APP_ROOT . '/src/Database.php';
require_once APP_ROOT . '/src/SystemCache.php';
AdminAuth::requireLogin();

$pageTitle = "Système";

// Bootstrap cache (uses the same SQLite DB as the app)
$_db    = new Database();
$_cache = new SystemCache($_db->getPDO());

// ?refresh=1 force-busts all cached sections
$forceRefresh = isset($_GET['refresh']) && $_GET['refresh'] === '1';
if ($forceRefresh) {
    $_cache->invalidate('system_status');
    $_cache->invalidate('disk_info');
    $_cache->invalidate('php_info');
}

// ═══════════════════════════════════════════════════════════════════════════════
// SECTION 1 — STATUS DATA
// ═══════════════════════════════════════════════════════════════════════════════

function safeExec(string $cmd): ?string {
    if (!function_exists('exec')) return null;
    $output = [];
    $rc = 0;
    exec($cmd . ' 2>/dev/null', $output, $rc);
    return $rc === 0 ? trim(implode("\n", $output)) : null;
}

function systemdStatus(string $unit): ?string {
    $raw = safeExec("systemctl is-active " . escapeshellarg($unit));
    if ($raw === null) return null;
    return in_array($raw, ['active', 'inactive', 'failed', 'activating', 'deactivating'], true)
        ? $raw : 'unknown';
}

function localHttpCheck(string $url): ?array {
    if (!function_exists('curl_init')) return null;
    $ch = curl_init($url);
    curl_setopt_array($ch, [
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_NOBODY         => true,
        CURLOPT_TIMEOUT        => 5,
        CURLOPT_CONNECTTIMEOUT => 3,
        CURLOPT_SSL_VERIFYPEER => false,
        CURLOPT_SSL_VERIFYHOST => 0,
        CURLOPT_FOLLOWLOCATION => true,
        CURLOPT_MAXREDIRS      => 3,
    ]);
    $start = microtime(true);
    curl_exec($ch);
    $ms   = (int) round((microtime(true) - $start) * 1000);
    $code = (int) curl_getinfo($ch, CURLINFO_HTTP_CODE);
    unset($ch);
    return $code > 0 ? [$code, $ms] : null;
}

function humanBytes(int $bytes): string {
    if ($bytes > 1073741824) return number_format($bytes / 1073741824, 1) . ' GB';
    if ($bytes > 1048576)    return number_format($bytes / 1048576, 1)    . ' MB';
    return number_format($bytes / 1024, 1) . ' KB';
}

function statusLabel(string $status): string {
    return match($status) {
        'active'   => '● En ligne',
        'inactive' => '○ Inactif',
        'failed'   => '✕ Erreur',
        'warn'     => '⚠ Attention',
        default    => '? Inconnu',
    };
}

function statusClass(string $status): string {
    return match($status) {
        'active'   => 'status-ok',
        'inactive' => 'status-warn',
        'warn'     => 'status-warn',
        'failed'   => 'status-err',
        default    => 'status-unknown',
    };
}

// ── system_status cache (2-minute TTL: systemctl + curl checks) ─────────────
$statusCacheAge = $_cache->ageSeconds('system_status');
$checksFromCache = $_cache->get('system_status', 120);

if ($checksFromCache !== null) {
    $checks = $checksFromCache;
    $statusCached = true;
} else {
    $statusCached = false;
    $checks = [];

    // nginx
    $nginxStatus  = systemdStatus('nginx');
    $nginxVersion = safeExec('nginx -v 2>&1 | head -1');
    $checks['nginx'] = [
        'label'  => 'nginx',
        'status' => $nginxStatus,
        'detail' => $nginxVersion,
    ];

    // php-fpm
    $phpFpmStatus = null;
    $phpFpmUnit   = null;
    foreach (['php8.3-fpm', 'php8.2-fpm', 'php8.1-fpm', 'php-fpm'] as $unit) {
        $s = systemdStatus($unit);
        if ($s !== null && $s !== 'unknown') {
            $phpFpmStatus = $s;
            $phpFpmUnit   = $unit;
            break;
        }
    }
    $checks['php_fpm'] = [
        'label'  => 'php-fpm' . ($phpFpmUnit ? " ($phpFpmUnit)" : ''),
        'status' => $phpFpmStatus,
        'detail' => null,
    ];

    // Site HTTP ping
    $siteUrl    = (isset($_SERVER['HTTPS']) ? 'https' : 'http') . '://' . ($_SERVER['HTTP_HOST'] ?? 'localhost') . '/';
    $httpResult = localHttpCheck($siteUrl);
    $checks['site_http'] = [
        'label'  => 'Site HTTP',
        'status' => $httpResult !== null ? ($httpResult[0] < 500 ? 'active' : 'failed') : null,
        'detail' => $httpResult !== null ? "HTTP {$httpResult[0]} — {$httpResult[1]} ms" : 'curl indisponible',
    ];

    // Database (DB object already created above, reuse it)
    $dbPath      = $_db->getDatabasePath();
    $dbExists    = file_exists($dbPath);
    $dbWritable  = $dbExists && is_writable($dbPath);
    $dbSizeBytes = $dbExists ? filesize($dbPath) : null;
    $dbSizeHuman = $dbSizeBytes !== null
        ? ($dbSizeBytes > 1048576
            ? number_format($dbSizeBytes / 1048576, 1) . ' MB'
            : number_format($dbSizeBytes / 1024, 1) . ' KB')
        : 'N/A';
    $dbRowCount = null;
    if ($dbExists) {
        try {
            $dbRowCount = $_db->getThesisCount();
        } catch (Throwable $e) {
            $dbRowCount = null;
        }
    }
    $checks['database'] = [
        'label'  => 'Base de données SQLite',
        'status' => $dbExists ? ($dbWritable ? 'active' : 'inactive') : 'failed',
        'detail' => $dbExists
            ? ($dbRowCount !== null ? "$dbRowCount thèses — $dbSizeHuman" : "Lecture impossible — $dbSizeHuman")
            : 'Fichier introuvable',
    ];

    // Storage directory
    $storageDir      = APP_ROOT . '/storage';
    $storageWritable = is_dir($storageDir) && is_writable($storageDir);
    $bannersDir = $storageDir . '/banners';
    $coversDir  = $storageDir . '/covers';
    $checks['storage'] = [
        'label'  => 'Répertoire storage',
        'status' => $storageWritable ? 'active' : ($storageDir ? 'inactive' : 'failed'),
        'detail' => $storageWritable
            ? implode('  ·  ', array_filter([
                is_dir($bannersDir) ? ('banners/ ' . count(array_diff(scandir($bannersDir), ['.','..'])) . ' fichiers') : null,
                is_dir($coversDir)  ? ('covers/ '  . count(array_diff(scandir($coversDir),  ['.','..'])) . ' fichiers') : null,
              ]))
            : 'Non accessible en écriture',
    ];

    // Maintenance mode
    $maintenanceOn = file_exists(APP_ROOT . '/storage/maintenance.flag');
    $checks['maintenance'] = [
        'label'  => 'Mode maintenance',
        'status' => $maintenanceOn ? 'warn' : 'active',
        'detail' => $maintenanceOn ? 'Activé — site public inaccessible' : 'Désactivé',
    ];

    $_cache->set('system_status', $checks);
    $statusCacheAge = 0;
}

// ── php_info cache (1-hour TTL: PHP ini values don't change at runtime) ───────
$phpInfoFromCache = $_cache->get('php_info', 3600);
if ($phpInfoFromCache !== null) {
    $phpInfo = $phpInfoFromCache;
} else {
    $phpInfo = [
        'version'      => PHP_VERSION,
        'sapi'         => PHP_SAPI,
        'memory_limit' => ini_get('memory_limit'),
        'upload_max'   => ini_get('upload_max_filesize'),
        'post_max'     => ini_get('post_max_size'),
        'max_exec'     => ini_get('max_execution_time') . 's',
    ];
    $_cache->set('php_info', $phpInfo);
}

// ── disk_info cache (5-minute TTL) ────────────────────────────────────────────
$diskFromCache = $_cache->get('disk_info', 300);
if ($diskFromCache !== null) {
    $diskTotal = $diskFromCache['total'];
    $diskFree  = $diskFromCache['free'];
    $diskUsed  = $diskFromCache['used'];
    $diskPct   = $diskFromCache['pct'];
} else {
    $diskTotal = disk_total_space(APP_ROOT);
    $diskFree  = disk_free_space(APP_ROOT);
    $diskUsed  = $diskTotal - $diskFree;
    $diskPct   = $diskTotal > 0 ? (int) round($diskUsed / $diskTotal * 100) : 0;
    $_cache->set('disk_info', [
        'total' => $diskTotal,
        'free'  => $diskFree,
        'used'  => $diskUsed,
        'pct'   => $diskPct,
    ]);
}

// ═══════════════════════════════════════════════════════════════════════════════
// SECTION 2 — LOGS DATA
// ═══════════════════════════════════════════════════════════════════════════════

const LOG_FILES = [
    'nginx_access' => ['label' => 'nginx — accès',     'path' => '/var/log/nginx/posterg_access.log'],
    'nginx_error'  => ['label' => 'nginx — erreurs',   'path' => '/var/log/nginx/posterg_error.log'],
    'php_error'    => ['label' => 'PHP-FPM — erreurs', 'path' => '/var/log/php8.4-fpm.log'],
];

const ALLOWED_LINES = [50, 100, 200, 500];

// Nginx config paths (live deployed, then local reference fallback)
const NGINX_CONFIG_LIVE  = '/etc/nginx/sites-available/posterg';
const NGINX_CONFIG_LOCAL = APP_ROOT . '/nginx/posterg.conf';

// Active tab: 'nginx_config', or a log key (status is now always shown above tabs)
$activeTab = $_GET['tab'] ?? 'nginx_access';
if ($activeTab === 'status') {
    // legacy URL — redirect to default log tab, status is always visible
    $activeTab = 'nginx_access';
} elseif ($activeTab !== 'nginx_config' && !array_key_exists($activeTab, LOG_FILES)) {
    $activeTab = 'nginx_access';
}

$selectedN = isset($_GET['n']) ? (int) $_GET['n'] : 100;
if (!in_array($selectedN, ALLOWED_LINES, true)) {
    $selectedN = 100;
}

/**
 * Read the tail of a log file. Returns null on error, [] if empty, or string[].
 * $errorMsg is set on failure.
 */
function readLogTail(string $logPath, int $n, ?string &$errorMsg): ?array {
    $errorMsg = null;
    if (!function_exists('exec')) {
        $errorMsg = "exec() est désactivé sur ce serveur.";
        return null;
    }
    if (!file_exists($logPath)) {
        $errorMsg = "Fichier introuvable : " . htmlspecialchars($logPath);
        return null;
    }
    if (!is_readable($logPath)) {
        $errorMsg = "Fichier non lisible (permissions insuffisantes) : " . htmlspecialchars($logPath);
        return null;
    }
    $output = [];
    $rc     = 0;
    exec('tail -n ' . intval($n) . ' ' . escapeshellarg($logPath) . ' 2>/dev/null', $output, $rc);
    if ($rc !== 0) {
        $errorMsg = "Erreur lors de la lecture du fichier journal.";
        return null;
    }
    return array_reverse($output); // newest first
}

function logLineClass(string $line): string {
    if (preg_match('/\[(crit|emerg|alert)\]/', $line)) return 'log-crit';
    if (preg_match('/\[error\]/', $line))               return 'log-error';
    if (preg_match('/\[warn\]/', $line))                return 'log-warn';
    if (preg_match('/\[notice\]/', $line))              return 'log-notice';
    if (preg_match('/" [45]\d\d /', $line))             return 'log-error';
    if (preg_match('/" 3\d\d /', $line))                return 'log-notice';
    return '';
}

// Pre-load the active log tab if it's a log key
$logLines    = null;
$logError    = null;
$logFileMeta = null;

if ($activeTab !== 'nginx_config') {
    $logPath  = LOG_FILES[$activeTab]['path'];
    $logLines = readLogTail($logPath, $selectedN, $logError);
    if (file_exists($logPath)) {
        $sz = filesize($logPath);
        $logFileMeta = [
            'size'  => $sz > 1048576
                ? number_format($sz / 1048576, 2) . ' MB'
                : number_format($sz / 1024, 1) . ' KB',
            'mtime' => date('d/m/Y H:i:s', filemtime($logPath)),
        ];
    }
}

// Pre-load nginx config tab
$nginxConfigLines  = null;
$nginxConfigSource = null;
$nginxConfigError  = null;
$nginxConfigMeta   = null;

if ($activeTab === 'nginx_config') {
    // Try live deployed config first, fall back to local reference copy
    $livePath  = NGINX_CONFIG_LIVE;
    $localPath = NGINX_CONFIG_LOCAL;

    if (file_exists($livePath) && is_readable($livePath)) {
        $raw = file($livePath, FILE_IGNORE_NEW_LINES);
        if ($raw !== false) {
            $nginxConfigLines  = $raw;
            $nginxConfigSource = 'live';
            $sz = filesize($livePath);
            $nginxConfigMeta = [
                'path'  => $livePath,
                'size'  => $sz > 1048576
                    ? number_format($sz / 1048576, 2) . ' MB'
                    : number_format($sz / 1024, 1) . ' KB',
                'mtime' => date('d/m/Y H:i:s', filemtime($livePath)),
            ];
        }
    }

    if ($nginxConfigLines === null && file_exists($localPath) && is_readable($localPath)) {
        $raw = file($localPath, FILE_IGNORE_NEW_LINES);
        if ($raw !== false) {
            $nginxConfigLines  = $raw;
            $nginxConfigSource = 'local';
            $sz = filesize($localPath);
            $nginxConfigMeta = [
                'path'  => $localPath,
                'size'  => $sz > 1048576
                    ? number_format($sz / 1048576, 2) . ' MB'
                    : number_format($sz / 1024, 1) . ' KB',
                'mtime' => date('d/m/Y H:i:s', filemtime($localPath)),
            ];
        }
    }

    if ($nginxConfigLines === null) {
        $nginxConfigError = file_exists($livePath)
            ? "Fichier non lisible (permissions insuffisantes) : " . htmlspecialchars($livePath)
            : "Config live introuvable (" . htmlspecialchars($livePath) . ") et config locale introuvable (" . htmlspecialchars($localPath) . ").";
    }
}

$isAdmin = true; $bodyClass = 'admin-body';
$extraCss = ['/assets/css/system.css'];
$extraJsInline = <<<'JS'
(function () {
    // ── Status section toggle ──────────────────────────────────────────
    var toggleBtn = document.getElementById('sys-status-toggle');
    var statusBody = document.getElementById('sys-status-body');
    if (toggleBtn && statusBody) {
        toggleBtn.addEventListener('click', function () {
            var collapsed = statusBody.hidden;
            statusBody.hidden = !collapsed;
            toggleBtn.setAttribute('aria-expanded', collapsed ? 'true' : 'false');
            toggleBtn.textContent = collapsed ? '▲ Réduire' : '▼ Développer';
            try { localStorage.setItem('sys_status_collapsed', collapsed ? '0' : '1'); } catch(e) {}
        });
        // Restore collapsed state
        try {
            if (localStorage.getItem('sys_status_collapsed') === '1') {
                statusBody.hidden = true;
                toggleBtn.setAttribute('aria-expanded', 'false');
                toggleBtn.textContent = '▼ Développer';
            }
        } catch(e) {}
    }

    // ── Instant tab switch on lines-select change ──────────────────────
    var sel = document.getElementById('lines-select');
    if (sel) {
        sel.addEventListener('change', function () {
            var url = new URL(window.location.href);
            url.searchParams.set('n', this.value);
            window.location.href = url.toString();
        });
    }

    // ── Copy-to-clipboard ─────────────────────────────────────────────
    var copyBtn = document.getElementById('log-copy-btn');
    var logOut  = document.getElementById('log-output');
    if (copyBtn && logOut) {
        copyBtn.addEventListener('click', function () {
            // Collect text from all .log-line spans (strip the gutter number
            // rendered via CSS ::before — it's not in the DOM text content).
            var lines = Array.from(logOut.querySelectorAll('.log-line'))
                .map(function (el) { return el.textContent; })
                .join('\n');

            if (navigator.clipboard && navigator.clipboard.writeText) {
                navigator.clipboard.writeText(lines).then(function () {
                    copyBtn.textContent = '✓ Copié';
                    copyBtn.classList.add('copied');
                    setTimeout(function () {
                        copyBtn.textContent = 'Copier';
                        copyBtn.classList.remove('copied');
                    }, 2000);
                }).catch(function () {
                    fallbackCopy(lines);
                });
            } else {
                fallbackCopy(lines);
            }
        });
    }

    function fallbackCopy(text) {
        var ta = document.createElement('textarea');
        ta.value = text;
        ta.style.cssText = 'position:fixed;opacity:0;top:0;left:0';
        document.body.appendChild(ta);
        ta.select();
        try { document.execCommand('copy'); } catch (e) {}
        document.body.removeChild(ta);
    }
})();
JS;
require_once APP_ROOT . '/templates/head.php';
?>
    <?php include APP_ROOT . '/templates/header.php'; ?>


<main id="main-content">
    <h1>Système</h1>

    <p class="sys-refresh-note">
        Affiché le <?= date('d/m/Y à H:i:s') ?> —
        <a href="?tab=<?= htmlspecialchars($activeTab) ?>&amp;n=<?= $selectedN ?>">Rafraîchir</a> —
        <a href="?tab=<?= htmlspecialchars($activeTab) ?>&amp;n=<?= $selectedN ?>&amp;refresh=1">Forcer actualisation</a>
    </p>

    <!-- ════════════════════════════════════════════════════════════════════
         STATUS SECTION — always visible above tabs
    ════════════════════════════════════════════════════════════════════ -->
    <section class="sys-status-section" aria-label="Statut du système">
        <div class="sys-status-header">
            <h2 class="srv-section-title" style="margin:0;border:none;padding:0;">Statut
                <?php if ($statusCached && $statusCacheAge !== null): ?>
                <span class="sys-cache-badge sys-cache-badge--hit" title="Données en cache">
                    ⚡ Cache — il y a <?= $statusCacheAge ?>s
                </span>
                <?php else: ?>
                <span class="sys-cache-badge sys-cache-badge--miss" title="Données fraîches">
                    ⟳ Actualisé
                </span>
                <?php endif; ?>
            </h2>
            <button id="sys-status-toggle" class="sys-status-toggle"
                    aria-expanded="true" aria-controls="sys-status-body"
                    type="button">▲ Réduire</button>
        </div>

        <div id="sys-status-body">
            <div class="srv-grid">
                <?php foreach ($checks as $check): ?>
                <?php $st = $check['status'] ?? 'unknown'; ?>
                <div class="srv-card">
                    <div class="srv-card__header">
                        <span class="srv-card__name"><?= htmlspecialchars($check['label']) ?></span>
                        <span class="<?= statusClass($st) ?>"><?= statusLabel($st) ?></span>
                    </div>
                    <?php if (!empty($check['detail'])): ?>
                    <div class="srv-card__detail"><?= htmlspecialchars($check['detail']) ?></div>
                    <?php endif; ?>
                </div>
                <?php endforeach; ?>
            </div>

            <div class="sys-status-meta">
                <div>
                    <h3 class="srv-section-title" style="margin-bottom:.75rem;">Environnement PHP</h3>
                    <div class="php-grid" style="margin-bottom:0;">
                        <?php foreach ($phpInfo as $key => $val): ?>
                        <div class="php-item">
                            <div class="php-item__key"><?= htmlspecialchars($key) ?></div>
                            <div class="php-item__val"><?= htmlspecialchars($val) ?></div>
                        </div>
                        <?php endforeach; ?>
                    </div>
                </div>
                <div>
                    <h3 class="srv-section-title" style="margin-bottom:.75rem;">Espace disque</h3>
                    <?php $diskColor = $diskPct > 85 ? '#e05555' : ($diskPct > 70 ? '#ffc107' : '#4caf50'); ?>
                    <div class="disk-bar-wrap">
                        <div class="disk-bar" style="--disk-pct:<?= $diskPct ?>%;--disk-color:<?= $diskColor ?>"></div>
                    </div>
                    <div class="disk-stats">
                        <span><?= humanBytes($diskUsed) ?> utilisé (<?= $diskPct ?>%)</span>
                        <span><?= humanBytes($diskFree) ?> libre / <?= humanBytes($diskTotal) ?></span>
                    </div>
                </div>
            </div>
        </div>
    </section>

    <!-- ── Tab bar ─────────────────────────────────────────────────────── -->
    <nav class="sys-tabs" aria-label="Journaux et configuration">
        <?php foreach (LOG_FILES as $key => $def): ?>
        <a href="?tab=<?= htmlspecialchars($key) ?>&amp;n=<?= $selectedN ?>"
           class="sys-tab <?= $activeTab === $key ? 'active' : '' ?>"
           <?= $activeTab === $key ? 'aria-current="page"' : '' ?>>
            <?= htmlspecialchars($def['label']) ?>
        </a>
        <?php endforeach; ?>
        <a href="?tab=nginx_config"
           class="sys-tab <?= $activeTab === 'nginx_config' ? 'active' : '' ?>"
           <?= $activeTab === 'nginx_config' ? 'aria-current="page"' : '' ?>>nginx — config</a>
    </nav>

    <?php if ($activeTab === 'nginx_config'): ?>
    <!-- ════════════════════════════════════════════════════════════════════
         NGINX CONFIG PANEL
    ════════════════════════════════════════════════════════════════════ -->

    <?php if ($nginxConfigMeta): ?>
    <div class="log-meta">
        <span data-label="Fichier"><?= htmlspecialchars($nginxConfigMeta['path']) ?></span>
        <span data-label="Taille"><?= $nginxConfigMeta['size'] ?></span>
        <span data-label="Modifié"><?= $nginxConfigMeta['mtime'] ?></span>
        <?php if ($nginxConfigSource === 'live'): ?>
        <span class="nginx-source-badge nginx-source-badge--live">● Config déployée</span>
        <?php else: ?>
        <span class="nginx-source-badge nginx-source-badge--local">⚠ Référence locale (config live inaccessible)</span>
        <?php endif; ?>
    </div>
    <?php endif; ?>

    <?php if ($nginxConfigError !== null): ?>
        <div class="log-unavailable">
            <strong>Configuration nginx non disponible</strong>
            <div class="log-unavail-path"><?= htmlspecialchars($nginxConfigError) ?></div>
            <?php if (php_sapi_name() === 'cli-server'): ?>
            <div class="log-unavail-dev">
                En développement, <code>/etc/nginx/sites-available/posterg</code> n'existe pas.
                La config de référence se trouve dans <code>nginx/posterg.conf</code>.
            </div>
            <?php endif; ?>
        </div>

    <?php elseif (empty($nginxConfigLines)): ?>
        <div class="log-empty">Le fichier de configuration est vide.</div>

    <?php else: ?>
        <?php
        // Minimal nginx syntax coloring — applied per line
        function nginxLineClass(string $line): string {
            $trimmed = ltrim($line);
            if ($trimmed === '' || str_starts_with($trimmed, '#')) return 'nginx-comment';
            if (preg_match('/^\s*(location|server|upstream|events|http|geo|map|types)\b/', $line)) return 'nginx-block';
            return 'nginx-directive';
        }
        ?>
        <div class="log-output" id="log-output" role="region" aria-label="Configuration nginx">
            <button class="log-copy-btn" id="log-copy-btn" type="button" title="Copier la configuration">
                Copier
            </button>
            <?php foreach ($nginxConfigLines as $i => $line): ?>
            <span class="log-line <?= nginxLineClass($line) ?>"
                  data-n="<?= $i + 1 ?>"><?= htmlspecialchars($line, ENT_QUOTES | ENT_SUBSTITUTE) ?></span>
            <?php endforeach; ?>
        </div>
    <?php endif; ?>

    <?php else: ?>
    <!-- ════════════════════════════════════════════════════════════════════
         LOG PANEL
    ════════════════════════════════════════════════════════════════════ -->

    <!-- Lines selector (submits via JS on change; no button needed) -->
    <div class="log-toolbar">
        <label for="lines-select" style="font-size:.84rem;color:var(--admin-text-muted);">
            Afficher
        </label>
        <select id="lines-select" aria-label="Nombre de lignes">
            <?php foreach (ALLOWED_LINES as $n): ?>
            <option value="<?= $n ?>" <?= $n === $selectedN ? 'selected' : '' ?>>
                <?= $n ?> dernières lignes
            </option>
            <?php endforeach; ?>
        </select>
        <?php if ($logLines !== null && count($logLines) > 0): ?>
            <span class="log-count-badge"><?= count($logLines) ?> ligne(s)</span>
        <?php endif; ?>
    </div>

    <!-- File metadata -->
    <?php if ($logFileMeta): ?>
    <div class="log-meta">
        <span data-label="Fichier"><?= htmlspecialchars(LOG_FILES[$activeTab]['path']) ?></span>
        <span data-label="Taille"><?= $logFileMeta['size'] ?></span>
        <span data-label="Modifié"><?= $logFileMeta['mtime'] ?></span>
    </div>
    <?php endif; ?>

    <!-- Log output -->
    <?php if ($logError !== null): ?>
        <div class="log-unavailable">
            <strong>Journaux non disponibles</strong>
            <div class="log-unavail-path"><?= $logError ?></div>
            <?php if (php_sapi_name() === 'cli-server'): ?>
            <div class="log-unavail-dev">
                En environnement de développement, les logs nginx ne sont pas disponibles.
                Cette page est pleinement fonctionnelle sur le serveur de production.
            </div>
            <?php endif; ?>
        </div>

    <?php elseif (empty($logLines)): ?>
        <div class="log-empty">Le fichier journal est vide.</div>

    <?php else: ?>
        <div class="log-output" id="log-output" role="log" aria-live="off" aria-label="Contenu du journal">
            <button class="log-copy-btn" id="log-copy-btn" type="button" title="Copier le contenu">
                Copier
            </button>
            <?php foreach ($logLines as $i => $line): ?>
            <span class="log-line <?= logLineClass($line) ?>"
                  data-n="<?= count($logLines) - $i ?>"><?= htmlspecialchars($line, ENT_QUOTES | ENT_SUBSTITUTE) ?></span>
            <?php endforeach; ?>
        </div>
    <?php endif; ?>

    <?php endif; ?>

</main>


<?php require_once APP_ROOT . '/templates/admin/footer.php'; ?>