<main id="main-content" class="admin-main--toc">
    <?php include APP_ROOT . '/templates/admin/partials/admin-toc.php'; ?>

    <article>
    <h1>Paramètres</h1>

    <!-- ══════════════════════════════════════════════════════════════
         MAINTENANCE
    ══════════════════════════════════════════════════════════════ -->
    <section aria-labelledby="settings-maintenance-title">
        <h2 id="settings-maintenance-title">Maintenance</h2>

        <div class="param-maintenance-row">
            <?php if ($maintenanceOn): ?>
                <p>
                    <strong>⚠ Mode maintenance activé</strong> — le site public est inaccessible.
                </p>
                <form method="post" action="actions/maintenance.php">
                    <input type="hidden" name="csrf_token" value="<?= htmlspecialchars($_SESSION['csrf_token']) ?>">
                    <input type="hidden" name="action" value="disable_maintenance">
                    <input type="hidden" name="redirect" value="/admin/parametres.php">
                    <button type="submit" class="btn btn--secondary">Désactiver la maintenance</button>
                </form>
            <?php else: ?>
                <p>Site public : <strong>en ligne</strong></p>
                <form method="post" action="actions/maintenance.php" id="enable-maintenance-form">
                    <input type="hidden" name="csrf_token" value="<?= htmlspecialchars($_SESSION['csrf_token']) ?>">
                    <input type="hidden" name="action" value="enable_maintenance">
                    <input type="hidden" name="redirect" value="/admin/parametres.php">
                    <button type="button" class="btn btn--warning"
                            onclick="document.getElementById('enable-maintenance-dialog').showModal()">
                        Activer la maintenance
                    </button>
                </form>
            <?php endif; ?>
        </div>
    </section>

    <!-- ══════════════════════════════════════════════════════════════
         RELAY SMTP
    ══════════════════════════════════════════════════════════════ -->
    <section aria-labelledby="settings-smtp-title">
        <h2 id="settings-smtp-title">Relay SMTP</h2>
        <p>
            Identifiants du serveur SMTP utilisé pour l'envoi d'e-mails
            (notifications, partage de TFE, etc.).
        </p>
        <div class="param-smtp-status">
            <?php if ($smtpConfigured): ?>
                <span class="param-badge-ok">✓ Configuré</span>
                <span><?= htmlspecialchars($smtpSettings['host']) ?>:<?= (int)$smtpSettings['port'] ?> (<?= htmlspecialchars($smtpSettings['encryption']) ?>)</span>
            <?php else: ?>
                <span class="param-badge-warn">✗ Non configuré</span>
            <?php endif; ?>
        </div>

        <?php
        // Inline helper: emit aria-invalid + error <small> when this field is the culprit
        $smtpFieldErr = function(string $id) use ($smtpErrorField): string {
            return $smtpErrorField === $id ? ' aria-invalid="true"' : '';
        };
        $smtpFieldMsg = function(string $id, string $msg) use ($smtpErrorField): string {
            return $smtpErrorField === $id
                ? '<small class="param-field-error" id="' . $id . '-error">' . htmlspecialchars($msg) . '</small>'
                : '';
        };
        // Human-readable hints per field (brief — the full message is in the toast)
        $smtpHints = [
            'smtp_host'       => 'Vérifiez l’adresse du serveur SMTP.',
            'smtp_port'       => 'Vérifiez le numéro de port.',
            'smtp_encryption' => 'Vérifiez le mode de chiffrement.',
            'smtp_username'   => 'Vérifiez le nom d’utilisateur.',
            'smtp_password'   => 'Mot de passe incorrect.',
        ];
        ?>
        <form method="post" action="actions/settings.php" class="param-form"
              <?= $smtpErrorField ? 'data-smtp-error-field="' . htmlspecialchars($smtpErrorField) . '"' : '' ?>>
            <input type="hidden" name="csrf_token" value="<?= htmlspecialchars($_SESSION['csrf_token']) ?>">
            <input type="hidden" name="section" value="smtp">

            <div class="param-grid">
                <div>
                    <label for="smtp_host">Hôte SMTP</label>
                    <input type="text" id="smtp_host" name="smtp_host"
                           value="<?= htmlspecialchars($smtpSettings['host']) ?>"
                           placeholder="smtp.example.com"
                           <?= $smtpFieldErr('smtp_host') ?>
                           <?= $smtpErrorField === 'smtp_host' ? 'aria-describedby="smtp_host-error"' : '' ?>>
                    <?= $smtpFieldMsg('smtp_host', $smtpHints['smtp_host']) ?>
                </div>

                <div>
                    <label for="smtp_port">Port</label>
                    <input type="number" id="smtp_port" name="smtp_port"
                           value="<?= (int)$smtpSettings['port'] ?>"
                           min="1" max="65535"
                           <?= $smtpFieldErr('smtp_port') ?>
                           <?= $smtpErrorField === 'smtp_port' ? 'aria-describedby="smtp_port-error"' : '' ?>>
                    <?= $smtpFieldMsg('smtp_port', $smtpHints['smtp_port']) ?>
                </div>

                <div>
                    <label for="smtp_encryption">Chiffrement</label>
                    <select id="smtp_encryption" name="smtp_encryption"
                            <?= $smtpFieldErr('smtp_encryption') ?>
                            <?= $smtpErrorField === 'smtp_encryption' ? 'aria-describedby="smtp_encryption-error"' : '' ?>>
                        <option value="tls" <?= $smtpSettings['encryption'] === 'tls' ? 'selected' : '' ?>>TLS (STARTTLS)</option>
                        <option value="ssl" <?= $smtpSettings['encryption'] === 'ssl' ? 'selected' : '' ?>>SSL (SMTPS)</option>
                        <option value="none" <?= $smtpSettings['encryption'] === 'none' ? 'selected' : '' ?>>Aucun</option>
                    </select>
                    <?= $smtpFieldMsg('smtp_encryption', $smtpHints['smtp_encryption']) ?>
                </div>

                <div>
                    <label for="smtp_username">Nom d'utilisateur</label>
                    <input type="text" id="smtp_username" name="smtp_username"
                           value="<?= htmlspecialchars($smtpSettings['username']) ?>"
                           <?= $smtpFieldErr('smtp_username') ?>
                           <?= $smtpErrorField === 'smtp_username' ? 'aria-describedby="smtp_username-error"' : '' ?>>
                    <?= $smtpFieldMsg('smtp_username', $smtpHints['smtp_username']) ?>
                </div>

                <div>
                    <label for="smtp_password">Mot de passe</label>
                    <input type="password" id="smtp_password" name="smtp_password"
                           value=""
                           autocomplete="new-password"
                           placeholder="Laissez vide pour ne pas modifier"
                           <?= $smtpFieldErr('smtp_password') ?>
                           <?= $smtpErrorField === 'smtp_password' ? 'aria-describedby="smtp_password-error"' : '' ?>>
                    <?= $smtpFieldMsg('smtp_password', $smtpHints['smtp_password']) ?>
                </div>
            </div>

            <fieldset>
                <legend>Expéditeur par défaut</legend>
                <div class="param-grid">
                    <div>
                        <label for="smtp_from_email">Adresse e-mail d'expédition</label>
                        <input type="email" id="smtp_from_email" name="smtp_from_email"
                               value="<?= htmlspecialchars($smtpSettings['from_email']) ?>"
                               placeholder="noreply@example.com">
                        <small>Adresse utilisée comme expéditeur (champ From:).</small>
                    </div>
                    <div>
                        <label for="smtp_from_name">Nom d'expéditeur</label>
                        <input type="text" id="smtp_from_name" name="smtp_from_name"
                               value="<?= htmlspecialchars($smtpSettings['from_name']) ?>">
                    </div>
                    <div>
                        <label for="smtp_notify_email">Adresse de notification admin</label>
                        <input type="email" id="smtp_notify_email" name="smtp_notify_email"
                               value="<?= htmlspecialchars($smtpSettings['notify_email'] ?? '') ?>"
                               placeholder="admin@example.com">
                        <small>Reçoit les notifications (demandes d’accès, etc.). Si vide, utilise l’adresse d’expédition.</small>
                    </div>
                </div>
            </fieldset>

            <button type="submit" class="btn btn--primary">Enregistrer</button>
        </form>

        <!-- Test d'envoi -->
        <fieldset class="param-smtp-test">
            <legend>Tester l'envoi d'un e-mail</legend>
            <p>Envoie un e-mail de test via le relay SMTP configuré ci-dessus.</p>
            <?php if (!$smtpConfigured): ?>
                <p class="param-note">⚠ Configurez le relay SMTP avant de pouvoir tester l'envoi.</p>
            <?php else: ?>
                <form method="post" action="actions/smtp-test.php" class="param-form">
                    <input type="hidden" name="csrf_token" value="<?= htmlspecialchars($_SESSION['csrf_token']) ?>">
                    <div class="param-smtp-test-row">
                        <div>
                            <label for="smtp_test_email">Adresse de destination</label>
                            <input type="email" id="smtp_test_email" name="test_email"
                                   placeholder="test@example.com" required>
                        </div>
                        <button type="submit" class="btn btn--primary">Envoyer le test</button>
                    </div>
                </form>
            <?php endif; ?>
        </fieldset>
    </section>

    <!-- ══════════════════════════════════════════════════════════════
         PEERTUBE
    ══════════════════════════════════════════════════════════════ -->
    <section aria-labelledby="settings-peertube-title">
        <h2 id="settings-peertube-title">PeerTube</h2>
        <p>
            Intégration avec une instance PeerTube pour l'hébergement des vidéos et fichiers audio.
            Les fichiers sont uploadés via l'API PeerTube et intégrés comme lecteurs embarqués sur la page du TFE.
        </p>
        <p class="param-note">
            ⚠ L'activation nécessite un quota d'upload suffisant sur l'instance PeerTube.
            Laissez désactivé jusqu'à obtention du quota.
        </p>

        <div class="param-smtp-status">
            <?php if ($peerTubeConfigured): ?>
                <span class="param-badge-ok">✓ Configuré</span>
                <span><?= htmlspecialchars($peerTubeSettings['instance_url']) ?></span>
            <?php else: ?>
                <span class="param-badge-warn">✗ Non configuré</span>
            <?php endif; ?>
        </div>

        <form method="post" action="actions/settings.php" class="param-form">
            <input type="hidden" name="csrf_token" value="<?= htmlspecialchars($_SESSION['csrf_token']) ?>">
            <input type="hidden" name="section" value="peertube">

            <fieldset>
                <legend>Activation</legend>
                <label class="param-checkbox">
                    <input type="checkbox" name="peertube_upload_enabled" value="1"
                           <?= $peerTubeEnabled ? 'checked' : '' ?>>
                    <span>
                        <strong>Activer l'upload PeerTube</strong><br>
                        <small>Lorsqu'activé, les fichiers vidéo et audio soumis via le formulaire sont uploadés
                        sur l'instance PeerTube plutôt que stockés localement sur le serveur.</small>
                    </span>
                </label>
            </fieldset>

            <div class="param-grid">
                <div>
                    <label for="peertube_instance_url">URL de l'instance PeerTube</label>
                    <input type="url" id="peertube_instance_url" name="peertube_instance_url"
                           value="<?= htmlspecialchars($peerTubeSettings['instance_url']) ?>"
                           placeholder="https://peertube.example.com">
                    <small>Sans slash final. Ex : <code>https://peertube.erg.be</code></small>
                </div>

                <div>
                    <label for="peertube_username">Nom d'utilisateur</label>
                    <input type="text" id="peertube_username" name="peertube_username"
                           value="<?= htmlspecialchars($peerTubeSettings['username']) ?>"
                           autocomplete="username">
                </div>

                <div>
                    <label for="peertube_password">Mot de passe</label>
                    <input type="password" id="peertube_password" name="peertube_password"
                           value=""
                           autocomplete="new-password"
                           placeholder="Laissez vide pour ne pas modifier">
                </div>

                <div>
                    <label for="peertube_channel_id">ID de la chaîne</label>
                    <input type="number" id="peertube_channel_id" name="peertube_channel_id"
                           value="<?= (int)$peerTubeSettings['channel_id'] ?>"
                           min="1">
                    <small>Identifiant numérique de la chaîne PeerTube cible.</small>
                </div>

                <div>
                    <label for="peertube_privacy">Visibilité des vidéos</label>
                    <select id="peertube_privacy" name="peertube_privacy">
                        <option value="1" <?= (int)$peerTubeSettings['privacy'] === 1 ? 'selected' : '' ?>>Publique</option>
                        <option value="2" <?= (int)$peerTubeSettings['privacy'] === 2 ? 'selected' : '' ?>>Non listée</option>
                        <option value="3" <?= (int)$peerTubeSettings['privacy'] === 3 ? 'selected' : '' ?>>Privée</option>
                    </select>
                </div>
            </div>

            <button type="submit" class="btn btn--primary">Enregistrer</button>
        </form>
    </section>

    <!-- ══════════════════════════════════════════════════════════════
         COMPTE ADMINISTRATEUR
    ══════════════════════════════════════════════════════════════ -->
    <section aria-labelledby="settings-account-title">
        <h2 id="settings-account-title">Compte administrateur</h2>

        <dl class="param-account-status">
            <div>
                <dt>Authentification PHP</dt>
                <dd><?php $badgeType = 'ok'; $badgeValue = $hasPassword; $badgeOkLabel = 'Active'; $badgeWarnLabel = 'Non configurée'; include APP_ROOT . '/templates/partials/status-badge.php'; ?></dd>
            </div>
            <div>
                <dt>Stockage du hash</dt>
                <dd>
                    <code>site_settings (DB)</code>
                    <?php $badgeType = 'ok'; $badgeValue = $hasPassword; $badgeOkLabel = 'Présent'; $badgeWarnLabel = 'Absent'; include APP_ROOT . '/templates/partials/status-badge.php'; ?>
                </dd>
            </div>
        </dl>

        <?php if (!$hasPassword): ?>
        <p class="param-note">
            Aucun mot de passe PHP configuré. Le formulaire ci-dessous stockera
            un hash bcrypt dans la base de données.
        </p>
        <?php endif; ?>

        <form method="post" action="/admin/actions/account.php" class="param-form" autocomplete="off">
            <input type="hidden" name="csrf_token" value="<?= htmlspecialchars($_SESSION['csrf_token']) ?>">
            <input type="hidden" name="redirect" value="/admin/parametres.php">

            <?php if ($hasPassword): ?>
            <div>
                <label for="current_password">Mot de passe actuel</label>
                <input type="password" id="current_password"
                       name="current_password" required autocomplete="current-password">
            </div>
            <?php endif; ?>

            <div>
                <label for="new_password">Nouveau mot de passe</label>
                <input type="password" id="new_password"
                       name="new_password" required autocomplete="new-password"
                       minlength="12">
                <small>Minimum 12 caractères.</small>
            </div>

            <div>
                <label for="confirm_password">Confirmer le mot de passe</label>
                <input type="password" id="confirm_password"
                       name="confirm_password" required autocomplete="new-password">
            </div>

            <button type="submit" class="btn btn--primary">
                <?= $hasPassword ? 'Mettre à jour le mot de passe' : 'Définir le mot de passe' ?>
            </button>
        </form>

        <!-- Danger zone: remove credentials -->
        <?php if ($hasPassword): ?>
        <fieldset class="param-danger-zone">
            <legend>Supprimer la configuration du mot de passe PHP</legend>
            <p>
                Supprime le hash de la base de données. L'accès admin
                dépendra uniquement de l'authentification nginx Basic Auth si elle est configurée.
            </p>
            <?php /* TODO: replace this browser confirm() with a proper <dialog> modal like the other confirmations */ ?>
            <form method="post" action="/admin/actions/account.php"
                  onsubmit="return confirm('Supprimer le mot de passe PHP ? L\'accès admin ne sera protégé que par nginx Basic Auth.')">
                <input type="hidden" name="csrf_token" value="<?= htmlspecialchars($_SESSION['csrf_token']) ?>">
                <input type="hidden" name="action" value="remove_credentials">
                <input type="hidden" name="redirect" value="/admin/parametres.php">
                <input type="hidden" name="current_password_remove" value="">
                <button type="submit" class="btn btn--danger">Supprimer le mot de passe</button>
            </form>
        </fieldset>
        <?php endif; ?>
    </section>

    <!-- ══════════════════════════════════════════════════════════════
         SYSTÈME
    ══════════════════════════════════════════════════════════════ -->
    <section aria-labelledby="settings-system-title">
        <h2 id="settings-system-title">Système</h2>

        <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>

        <div class="sys-status-header">
            <h3 class="srv-section-title srv-section-title--compact">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; ?>
            </h3>
            <button id="sys-status-toggle" class="sys-status-toggle"
                    aria-expanded="<?= $statusInitiallyCollapsed ? 'false' : 'true' ?>" aria-controls="sys-status-body"
                    type="button"
                    onclick="var b=document.getElementById('sys-status-body');var c=b.hidden;b.hidden=!c;this.setAttribute('aria-expanded',c);this.textContent=c?'▲ Réduire':'▼ Développer';document.cookie='sys_collapsed='+(!c)+';path=/;max-age=31536000';return false">
              <?= $statusInitiallyCollapsed ? '▼ Développer' : '▲ Réduire' ?>
            </button>
        </div>

        <div id="sys-status-body"<?= $statusInitiallyCollapsed ? ' hidden' : '' ?>>
            <div class="srv-grid">
                <?php foreach ($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="<?= SystemController::statusClass($st) ?>"><?= SystemController::statusLabel($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>
                    <h4 class="srv-section-title srv-section-title--sub">Environnement PHP</h4>
                    <div class="php-grid php-grid--flush">
                        <?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>
                    <h4 class="srv-section-title srv-section-title--sub">Espace disque</h4>
                    <div class="disk-bar-wrap">
                        <div class="disk-bar" style="--disk-pct:<?= $diskPct ?>%;--disk-color:<?= $diskColor ?>"></div>
                    </div>
                    <div class="disk-stats">
                        <span><?= SystemController::humanBytes($diskUsed) ?> utilisé (<?= $diskPct ?>%)</span>
                        <span><?= SystemController::humanBytes($diskFree) ?> libre / <?= SystemController::humanBytes($diskTotal) ?></span>
                    </div>
                </div>
            </div>
        </div>
    </section>

    <!-- ══════════════════════════════════════════════════════════════
         JOURNAUX
    ══════════════════════════════════════════════════════════════ -->
    <section aria-labelledby="settings-logs-title">
        <h2 id="settings-logs-title">Journaux</h2>

        <nav class="sys-tabs" aria-label="Journaux et configuration">
            <?php foreach (SystemController::LOG_FILES as $key => $def): ?>
            <a href="?tab=<?= htmlspecialchars($key) ?>&amp;n=<?= $selectedN ?>"
               class="sys-tab <?= $activeTab === $key ? 'active' : '' ?>"
               hx-get="/admin/system-fragment.php?tab=<?= htmlspecialchars($key) ?>&amp;n=<?= $selectedN ?>"
               hx-target="#sys-tab-panel"
               hx-push-url="?tab=<?= htmlspecialchars($key) ?>&amp;n=<?= $selectedN ?>"
               hx-swap="innerHTML"
               hx-indicator="#sys-tab-panel"
               data-tab="<?= htmlspecialchars($key) ?>"
               <?= $activeTab === $key ? 'aria-current="page"' : '' ?>>
                <?= htmlspecialchars($def['label']) ?>
            </a>
            <?php endforeach; ?>
            <a href="?tab=nginx_config"
               class="sys-tab <?= $activeTab === 'nginx_config' ? 'active' : '' ?>"
               hx-get="/admin/system-fragment.php?tab=nginx_config"
               hx-target="#sys-tab-panel"
               hx-push-url="?tab=nginx_config"
               hx-swap="innerHTML"
               hx-indicator="#sys-tab-panel"
               data-tab="nginx_config"
               <?= $activeTab === 'nginx_config' ? 'aria-current="page"' : '' ?>>nginx — config</a>
        </nav>

        <div id="sys-tab-panel">
            <?php if ($activeTab === 'nginx_config'): ?>
                <?php include APP_ROOT . '/templates/admin/partials/system-nginx-config-panel.php'; ?>
            <?php else: ?>
                <?php include APP_ROOT . '/templates/admin/partials/system-log-panel.php'; ?>
            <?php endif; ?>
        </div>
    </section>
    </article>
</main>

<script>
function copyLogContent(btn) {
    var logOut = document.querySelector('#log-output');
    if (!logOut) return;
    var text = Array.from(logOut.querySelectorAll('.log-line'))
        .map(function(el){ return el.textContent; }).join('\n');
    if (navigator.clipboard && navigator.clipboard.writeText) {
        navigator.clipboard.writeText(text).then(function(){
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// Focus the SMTP field that caused the probe error
(function () {
    var form = document.querySelector('form[data-smtp-error-field]');
    if (!form) return;
    var fieldId = form.getAttribute('data-smtp-error-field');
    var el = fieldId ? document.getElementById(fieldId) : null;
    if (!el) return;
    el.scrollIntoView({ behavior: 'smooth', block: 'center' });
    el.focus();
}());

// Update active tab class after each HTMX swap on #sys-tab-panel
document.body.addEventListener('htmx:afterSwap', function(evt) {
    if (evt.detail.target && evt.detail.target.id === 'sys-tab-panel') {
        var rc = evt.detail.requestConfig;
        var tab = null;
        var qIdx = rc.path.indexOf('?');
        if (qIdx !== -1) {
            tab = new URLSearchParams(rc.path.substring(qIdx + 1)).get('tab');
        }
        if (!tab && rc.parameters && rc.parameters.tab) {
            tab = rc.parameters.tab;
        }
        if (tab) {
            document.querySelectorAll('.sys-tabs .sys-tab').forEach(function(a) {
                var isActive = a.getAttribute('data-tab') === tab;
                a.classList.toggle('active', isActive);
                if (isActive) a.setAttribute('aria-current', 'page');
                else a.removeAttribute('aria-current');
            });
        }
    }
});
</script>

<!-- Enable maintenance confirm -->
<dialog id="enable-maintenance-dialog" class="admin-dialog admin-dialog--sm" aria-labelledby="enable-maint-title">
    <div class="admin-dialog__header">
        <h2 id="enable-maint-title">Activer la maintenance</h2>
        <button type="button" class="admin-dialog__close" aria-label="Fermer"
                onclick="this.closest('dialog').close()">&#x2715;</button>
    </div>
    <div class="admin-dialog__alert">
        <p>Mettre le site en maintenance ? Les visiteurs verront une page 503.</p>
    </div>
    <div class="admin-dialog__footer">
        <button type="button" class="btn btn--warning"
                onclick="this.closest('dialog').close(); document.getElementById('enable-maintenance-form').submit()">
            Activer
        </button>
        <button type="button" class="btn btn--secondary" onclick="this.closest('dialog').close()">Annuler</button>
    </div>
</dialog>


