<?php
require_once __DIR__ . '/../config.php';
require_once __DIR__ . '/../includes/functions.php';
require_once __DIR__ . '/../includes/manage.php';

// Check admin login
if (!isset($_SESSION['admin_logged_in']) || !$_SESSION['admin_logged_in']) {
    header('Location: login.php');
    exit;
}

$pageTitle = 'Einstellungen';

// This page rolls out updates and hands out backup archives, so every form on
// it carries a CSRF token - including the admin forms, which are otherwise
// identical to what admins.php did before.
function settingsCsrfToken() {
    if (empty($_SESSION['settings_csrf_token'])) {
        $_SESSION['settings_csrf_token'] = bin2hex(random_bytes(32));
    }

    return $_SESSION['settings_csrf_token'];
}

function settingsCsrfValid($token) {
    return !empty($_SESSION['settings_csrf_token']) &&
        is_string($token) &&
        hash_equals($_SESSION['settings_csrf_token'], $token);
}

function isValidAdminPasswordInput($password) {
    return is_string($password) && strlen($password) >= 8;
}

// Every message on this page, rendered as .alert blocks in source order.
// A single action can produce several: an update reports deployment, migrations
// and hook failure separately.
$notices = [];

$adminAccounts = getAdminAccounts();

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    if (!settingsCsrfValid($_POST['csrf_token'] ?? '')) {
        $notices[] = ['type' => 'error', 'text' => 'Ungültiges Sicherheitstoken. Bitte die Seite neu laden.'];
    } elseif (isset($_POST['create_backup'])) {
        try {
            $record = manageBackupCreate('manual');
            $notices[] = ['type' => 'success', 'text' => sprintf(
                'Backup erstellt: %s (%d Dateien, %s).',
                $record['filename'],
                $record['file_count'],
                manageFormatBytes((int) $record['size'])
            )];

            // A failed upload is a warning, never an error: the local archive
            // is complete and valid either way.
            foreach ($record['remote_uploads'] as $upload) {
                if (empty($upload['success'])) {
                    $notices[] = ['type' => 'warning', 'text' => 'Upload an ' . $upload['target'] .
                        ' fehlgeschlagen: ' . ($upload['error'] ?? 'unbekannter Fehler')];
                }
            }
            manageHeartbeatSendQuietly();
        } catch (Throwable $exception) {
            $notices[] = ['type' => 'error', 'text' => 'Backup fehlgeschlagen: ' . $exception->getMessage()];
        }
    } elseif (isset($_POST['download_backup'])) {
        try {
            $path = manageBackupPath($_POST['filename'] ?? '');
            $handle = fopen($path, 'rb');
            $size = filesize($path);
            if ($handle === false || $size === false) {
                throw new RuntimeException('Das Backup konnte nicht geöffnet werden.');
            }

            header('Content-Type: application/zip');
            header('Content-Disposition: attachment; filename="' . addcslashes(basename($path), '"\\') . '"');
            header('Content-Length: ' . $size);
            header('Cache-Control: private, no-store');
            header('X-Content-Type-Options: nosniff');
            fpassthru($handle);
            fclose($handle);
            exit;
        } catch (Throwable $exception) {
            $notices[] = ['type' => 'error', 'text' => 'Download fehlgeschlagen: ' . $exception->getMessage()];
        }
    } elseif (isset($_POST['apply_update'])) {
        try {
            $result = manageUpdateApply(['force' => !empty($_POST['force'])]);
            $notices[] = ['type' => 'success', 'text' => sprintf(
                'Update ausgerollt: %s → %s. %d Dateien kopiert, %d gesichert, %d übersprungen.',
                $result['from_version'] !== '' ? $result['from_version'] : 'unbekannt',
                $result['to_version'],
                $result['copied'],
                $result['backed_up'],
                $result['skipped']
            )];
            $notices[] = ['type' => 'info', 'text' => 'Die überschriebenen Dateien liegen unter ' .
                $result['backup_dir'] . ' - nur für eine manuelle Wiederherstellung, es gibt kein Rollback.'];

            // The files are live at this point. A failing post-update step is
            // therefore reported on its own, not as "update failed".
            $hook = $result['hook'];
            if (is_array($hook)) {
                $applied = $hook['migrations']['applied'] ?? [];
                if ($applied !== []) {
                    $notices[] = ['type' => 'success', 'text' => 'Migrationen ausgeführt: ' . implode(', ', $applied)];
                }
                if (empty($hook['success'])) {
                    if (!empty($hook['failed_migration'])) {
                        $notices[] = ['type' => 'error', 'text' => 'Die Dateien wurden ausgerollt, aber die Migration "' .
                            $hook['failed_migration'] . '" ist fehlgeschlagen: ' . ($hook['error'] ?? '')];
                        $notices[] = ['type' => 'error', 'text' => 'Die restlichen Migrationen wurden nicht ausgeführt. ' .
                            'Nach Behebung der Ursache unten "Migrationen ausführen" verwenden.'];
                    } else {
                        $notices[] = ['type' => 'error', 'text' => 'Die Dateien wurden ausgerollt, aber der ' .
                            'Post-Update-Hook ist fehlgeschlagen: ' . ($hook['error'] ?? '')];
                    }
                }
            }
            manageHeartbeatSendQuietly();
        } catch (Throwable $exception) {
            $notices[] = ['type' => 'error', 'text' => 'Update fehlgeschlagen: ' . $exception->getMessage()];
        }
    } elseif (isset($_POST['run_migrations'])) {
        $report = manageUpdateRunMigrations();
        if ($report['applied'] !== []) {
            $notices[] = ['type' => 'success', 'text' => 'Migrationen ausgeführt: ' . implode(', ', $report['applied'])];
        }
        if (!$report['success']) {
            $notices[] = ['type' => 'error', 'text' => 'Migration "' . $report['failed'] . '" ist fehlgeschlagen: ' .
                $report['error']];
        } elseif ($report['applied'] === []) {
            $notices[] = ['type' => 'info', 'text' => 'Es gibt keine offenen Migrationen.'];
        }
    } elseif (isset($_POST['send_heartbeat'])) {
        try {
            $result = manageHeartbeatSend();
            $notices[] = ['type' => 'success', 'text' => 'Status an den Manage-Server gemeldet. Aktuelles Release: ' .
                ($result['latest'] !== '' ? $result['latest'] : 'keines') . '.'];
        } catch (Throwable $exception) {
            $notices[] = ['type' => 'error', 'text' => 'Statusmeldung fehlgeschlagen: ' . $exception->getMessage()];
        }
    } elseif (isset($_POST['add_admin'])) {
        $username = normalizeAdminUsername($_POST['username'] ?? '');
        $description = normalizeAdminDescription($_POST['description'] ?? '');
        $email = normalizeAdminEmail($_POST['email'] ?? '');
        $password = $_POST['password'] ?? '';
        $passwordConfirm = $_POST['password_confirm'] ?? '';

        if (!isValidAdminUsername($username)) {
            $notices[] = ['type' => 'error', 'text' => 'Ungültiger Benutzername. Erlaubt: 3-50 Zeichen (Buchstaben, Zahlen, Punkt, Unterstrich, Bindestrich).'];
        } elseif (isset($adminAccounts[$username])) {
            $notices[] = ['type' => 'error', 'text' => 'Dieser Benutzername existiert bereits.'];
        } elseif (!isValidAdminDescription($description)) {
            $notices[] = ['type' => 'error', 'text' => 'Beschreibung ist erforderlich (max. 120 Zeichen).'];
        } elseif (!isValidAdminEmail($email)) {
            $notices[] = ['type' => 'error', 'text' => 'Gültige E-Mail ist erforderlich.'];
        } elseif (!isValidAdminPasswordInput($password)) {
            $notices[] = ['type' => 'error', 'text' => 'Passwort muss mindestens 8 Zeichen lang sein.'];
        } elseif ($password !== $passwordConfirm) {
            $notices[] = ['type' => 'error', 'text' => 'Passwort und Bestätigung stimmen nicht überein.'];
        } else {
            $adminAccounts[$username] = [
                'password_hash' => password_hash($password, PASSWORD_BCRYPT),
                'description' => $description,
                'email' => $email
            ];
            saveAdminAccounts($adminAccounts);
            $notices[] = ['type' => 'success', 'text' => 'Admin wurde erfolgreich angelegt.'];
        }
    } elseif (isset($_POST['update_description'])) {
        $targetUsername = normalizeAdminUsername($_POST['target_username'] ?? '');
        $description = normalizeAdminDescription($_POST['description'] ?? '');
        $email = normalizeAdminEmail($_POST['email'] ?? '');

        if (!isset($adminAccounts[$targetUsername])) {
            $notices[] = ['type' => 'error', 'text' => 'Admin nicht gefunden.'];
        } elseif (!isValidAdminDescription($description)) {
            $notices[] = ['type' => 'error', 'text' => 'Beschreibung ist erforderlich (max. 120 Zeichen).'];
        } elseif (!isValidAdminEmail($email)) {
            $notices[] = ['type' => 'error', 'text' => 'Gültige E-Mail ist erforderlich.'];
        } else {
            $adminAccounts[$targetUsername]['description'] = $description;
            $adminAccounts[$targetUsername]['email'] = $email;
            saveAdminAccounts($adminAccounts);
            $notices[] = ['type' => 'success', 'text' => 'Beschreibung und E-Mail wurden aktualisiert.'];
        }
    } elseif (isset($_POST['change_password'])) {
        $targetUsername = normalizeAdminUsername($_POST['target_username'] ?? '');
        $newPassword = $_POST['new_password'] ?? '';
        $newPasswordConfirm = $_POST['new_password_confirm'] ?? '';

        if (!isset($adminAccounts[$targetUsername])) {
            $notices[] = ['type' => 'error', 'text' => 'Admin nicht gefunden.'];
        } elseif (!isValidAdminPasswordInput($newPassword)) {
            $notices[] = ['type' => 'error', 'text' => 'Passwort muss mindestens 8 Zeichen lang sein.'];
        } elseif ($newPassword !== $newPasswordConfirm) {
            $notices[] = ['type' => 'error', 'text' => 'Passwort und Bestätigung stimmen nicht überein.'];
        } else {
            $adminAccounts[$targetUsername]['password_hash'] = password_hash($newPassword, PASSWORD_BCRYPT);
            saveAdminAccounts($adminAccounts);
            $notices[] = ['type' => 'success', 'text' => 'Passwort wurde aktualisiert.'];
        }
    } elseif (isset($_POST['delete_admin'])) {
        $targetUsername = normalizeAdminUsername($_POST['target_username'] ?? '');

        if (!isset($adminAccounts[$targetUsername])) {
            $notices[] = ['type' => 'error', 'text' => 'Admin nicht gefunden.'];
        } else {
            unset($adminAccounts[$targetUsername]);
            saveAdminAccounts($adminAccounts);

            if (isset($_SESSION['admin_username']) && $_SESSION['admin_username'] === $targetUsername) {
                $_SESSION['admin_logged_in'] = false;
                unset($_SESSION['admin_username']);
                session_destroy();
                header('Location: login.php');
                exit;
            }

            $notices[] = ['type' => 'success', 'text' => 'Admin wurde gelöscht.'];
        }
    }

    $adminAccounts = getAdminAccounts();
}

// Collected after the actions, so the page shows the state they produced.
// Never throws: remote failures come back inside the array.
$status = manageClientStatus();

// No cron on this host, so the report to the Manage server rides along with
// this page load - at most once an hour.
manageHeartbeatSendIfDue();

$updateAvailable = $status['update'] !== null && !empty($status['update']['available']);
$latestVersion = $status['update']['latest'] ?? '';

$currentAdmin = isset($_SESSION['admin_username']) ? normalizeAdminUsername($_SESSION['admin_username']) : '';
$changeUsername = normalizeAdminUsername($_GET['change'] ?? '');
$selectedChangeUser = null;
$editDescriptionUsername = normalizeAdminUsername($_GET['edit_description'] ?? '');
$selectedDescriptionUser = null;

if ($changeUsername !== '') {
    if (!isset($adminAccounts[$changeUsername])) {
        $notices[] = ['type' => 'error', 'text' => 'Ausgewählter Admin wurde nicht gefunden.'];
    } else {
        $selectedChangeUser = $changeUsername;
    }
}

if ($editDescriptionUsername !== '') {
    if (!isset($adminAccounts[$editDescriptionUsername])) {
        $notices[] = ['type' => 'error', 'text' => 'Ausgewählter Admin wurde nicht gefunden.'];
    } else {
        $selectedDescriptionUser = $editDescriptionUsername;
    }
}

ksort($adminAccounts);

$csrfToken = settingsCsrfToken();

$bodyClass = 'admin-page';
include __DIR__ . '/../includes/header.php';
?>

<div class="admin-header">
    <h2>Einstellungen</h2>
    <div>
        <a href="index.php" class="btn btn-secondary">Zurück zum Dashboard</a>
    </div>
</div>

<?php foreach ($notices as $notice): ?>
    <div class="alert alert-<?php echo htmlspecialchars($notice['type']); ?>">
        <?php echo htmlspecialchars($notice['text']); ?>
    </div>
<?php endforeach; ?>

<?php if (!$status['configured']): ?>
    <div class="alert alert-warning">
        Der Manage-Client ist nicht konfiguriert. Ohne <code>MANAGE_SERVER_URL</code>, <code>MANAGE_INSTANCE</code>
        und <code>MANAGE_TOKEN</code> in <code>config.php</code> funktionieren Update-Prüfung und Backup-Upload nicht.
        Lokale Backups lassen sich trotzdem erstellen.
    </div>
<?php endif; ?>

<div class="admin-stats">
    <div class="stat-card">
        <h3>Installierte Version</h3>
        <div class="stat-value"><?php echo htmlspecialchars($status['version'] !== '' ? $status['version'] : 'unbekannt'); ?></div>
    </div>

    <div class="stat-card">
        <h3>Aktuelles Release</h3>
        <div class="stat-value"><?php echo htmlspecialchars($latestVersion !== '' ? $latestVersion : '–'); ?></div>
    </div>

    <div class="stat-card">
        <h3>Lokale Backups</h3>
        <div class="stat-value"><?php echo count($status['backups']); ?></div>
    </div>

    <div class="stat-card">
        <h3>Letztes Backup</h3>
        <div class="stat-value" style="font-size: 1.2rem;">
            <?php echo $status['last_backup_at'] !== null ? htmlspecialchars(formatDate($status['last_backup_at'])) : 'nie'; ?>
        </div>
    </div>
</div>

<div class="panel">
    <h3>System</h3>

    <?php if ($status['update_error'] !== null): ?>
        <div class="alert alert-warning">
            Die Update-Prüfung ist fehlgeschlagen: <?php echo htmlspecialchars($status['update_error']); ?>
        </div>
    <?php elseif ($updateAvailable): ?>
        <div class="alert alert-warning">
            Version <?php echo htmlspecialchars($latestVersion); ?> steht bereit. Vor dem Ausrollen sollte ein
            aktuelles Backup vorliegen – ein Update lässt sich nicht zurücknehmen.
        </div>
    <?php elseif ($status['configured']): ?>
        <div class="alert alert-success">Der Shop ist auf dem aktuellen Stand.</div>
    <?php endif; ?>

    <div class="table-responsive">
        <table class="responsive-table">
            <tbody>
                <tr>
                    <td data-label="Instanz"><strong>Instanz</strong></td>
                    <td><?php echo htmlspecialchars($status['instance'] !== '' ? $status['instance'] : '–'); ?></td>
                </tr>
                <tr>
                    <td data-label="Manage-Server"><strong>Manage-Server</strong></td>
                    <td><?php echo htmlspecialchars($status['server_url'] !== '' ? $status['server_url'] : '–'); ?></td>
                </tr>
                <tr>
                    <td data-label="PHP-Version"><strong>PHP-Version</strong></td>
                    <td><?php echo htmlspecialchars($status['php_version']); ?></td>
                </tr>
                <tr>
                    <td data-label="Offene Migrationen"><strong>Offene Migrationen</strong></td>
                    <td><?php echo count($status['pending_migrations']); ?></td>
                </tr>
            </tbody>
        </table>
    </div>

    <form method="POST" style="margin-top: 1rem;" onsubmit="return confirm('Update jetzt ausrollen? Dateien werden überschrieben und es gibt kein Rollback.');">
        <input type="hidden" name="csrf_token" value="<?php echo htmlspecialchars($csrfToken); ?>">
        <div class="form-group">
            <label>
                <input type="checkbox" name="force" value="1">
                Erneut ausrollen, auch wenn keine neuere Version vorliegt
            </label>
        </div>
        <button type="submit" name="apply_update" class="btn">Update ausrollen</button>
        <button type="submit" name="send_heartbeat" class="btn btn-secondary">Status melden</button>
    </form>
</div>

<div class="panel">
    <h3>Backup</h3>
    <p>
        Gesichert werden die Daten unter <code>data/</code> und die Produktbilder unter
        <code>assets/images/</code>. Lokal bleiben die letzten
        <?php echo (int) MANAGE_BACKUP_LOCAL_RETENTION; ?> Archive erhalten, jedes wird zusätzlich an den
        Manage-Server übertragen.
        <?php if ((int) MANAGE_BACKUP_AUTO_INTERVAL_SECONDS > 0): ?>
            Zusätzlich erstellt das Dashboard automatisch alle
            <?php echo (int) round(MANAGE_BACKUP_AUTO_INTERVAL_SECONDS / 86400); ?> Tage ein Backup.
        <?php endif; ?>
    </p>

    <form method="POST">
        <input type="hidden" name="csrf_token" value="<?php echo htmlspecialchars($csrfToken); ?>">
        <button type="submit" name="create_backup" class="btn">Backup jetzt erstellen</button>
    </form>

    <?php if ($status['backups'] === []): ?>
        <p style="margin-top: 1rem;">Es wurde noch kein Backup erstellt.</p>
    <?php else: ?>
        <div class="table-responsive" style="margin-top: 1rem;">
            <table class="responsive-table">
                <thead>
                    <tr>
                        <th>Datei</th>
                        <th>Erstellt</th>
                        <th>Auslöser</th>
                        <th>Dateien</th>
                        <th>Größe</th>
                        <th>Upload</th>
                        <th>Aktionen</th>
                    </tr>
                </thead>
                <tbody>
                <?php foreach ($status['backups'] as $backup): ?>
                    <tr>
                        <td data-label="Datei"><strong><?php echo htmlspecialchars($backup['filename']); ?></strong></td>
                        <td data-label="Erstellt"><?php echo htmlspecialchars(formatDate($backup['created_at'])); ?></td>
                        <td data-label="Auslöser"><?php echo htmlspecialchars($backup['trigger'] ?? ''); ?></td>
                        <td data-label="Dateien"><?php echo (int) ($backup['file_count'] ?? 0); ?></td>
                        <td data-label="Größe"><?php echo htmlspecialchars(manageFormatBytes((int) ($backup['size'] ?? 0))); ?></td>
                        <td data-label="Upload">
                            <?php
                            $uploads = is_array($backup['remote_uploads'] ?? null) ? $backup['remote_uploads'] : [];
                            if ($uploads === []) {
                                echo '<span class="status status-expired">nicht übertragen</span>';
                            } else {
                                foreach ($uploads as $upload) {
                                    if (!empty($upload['success'])) {
                                        echo '<span class="status status-picked">' . htmlspecialchars($upload['target']) . ': OK</span>';
                                    } else {
                                        echo '<span class="status status-expired" title="' .
                                            htmlspecialchars($upload['error'] ?? '') . '">' .
                                            htmlspecialchars($upload['target']) . ': Fehler</span>';
                                    }
                                }
                            }
                            ?>
                        </td>
                        <td data-label="Aktionen">
                            <form method="POST" style="display: inline;">
                                <input type="hidden" name="csrf_token" value="<?php echo htmlspecialchars($csrfToken); ?>">
                                <input type="hidden" name="filename" value="<?php echo htmlspecialchars($backup['filename']); ?>">
                                <button type="submit" name="download_backup" class="btn btn-small btn-secondary">Herunterladen</button>
                            </form>
                        </td>
                    </tr>
                <?php endforeach; ?>
                </tbody>
            </table>
        </div>
    <?php endif; ?>
</div>

<?php if ($status['pending_migrations'] !== []): ?>
    <div class="panel">
        <h3>Offene Migrationen</h3>
        <p>Diese Migrationen wurden noch nicht ausgeführt:</p>
        <ul>
            <?php foreach ($status['pending_migrations'] as $migration): ?>
                <li><code><?php echo htmlspecialchars($migration['id']); ?></code></li>
            <?php endforeach; ?>
        </ul>
        <form method="POST">
            <input type="hidden" name="csrf_token" value="<?php echo htmlspecialchars($csrfToken); ?>">
            <button type="submit" name="run_migrations" class="btn">Migrationen ausführen</button>
        </form>
    </div>
<?php endif; ?>

<?php foreach ($status['errors'] as $error): ?>
    <div class="alert alert-warning"><?php echo htmlspecialchars($error); ?></div>
<?php endforeach; ?>

<div class="panel">
    <p><strong>Eingeloggt als:</strong> <?php echo htmlspecialchars($currentAdmin !== '' ? $currentAdmin : 'Unbekannt'); ?></p>
</div>

<div class="panel">
    <h3>Neuen Admin anlegen</h3>
    <form method="POST">
        <input type="hidden" name="csrf_token" value="<?php echo htmlspecialchars($csrfToken); ?>">
        <div class="form-group">
            <label for="username">Benutzername *</label>
            <input type="text" id="username" name="username" required maxlength="50" pattern="[A-Za-z0-9][A-Za-z0-9._-]{2,49}" placeholder="z.B. max.mustermann">
        </div>
        <div class="form-group">
            <label for="description">Beschreibung *</label>
            <input type="text" id="description" name="description" required maxlength="120" placeholder="z.B. Kassierer, Shop-Team">
        </div>
        <div class="form-group">
            <label for="email">E-Mail *</label>
            <input type="email" id="email" name="email" required maxlength="190" placeholder="z.B. max.mustermann@example.org">
        </div>
        <div class="form-group">
            <label for="password">Passwort (mind. 8 Zeichen) *</label>
            <input type="password" id="password" name="password" required minlength="8">
        </div>
        <div class="form-group">
            <label for="password_confirm">Passwort bestätigen *</label>
            <input type="password" id="password_confirm" name="password_confirm" required minlength="8">
        </div>
        <button type="submit" name="add_admin" class="btn">Admin anlegen</button>
    </form>
</div>

<div class="panel">
    <h3>Admin-Liste</h3>
    <div class="table-responsive">
        <table class="responsive-table">
            <thead>
                <tr>
                    <th>Benutzername</th>
                    <th>Beschreibung</th>
                    <th>E-Mail</th>
                    <th>Aktionen</th>
                </tr>
            </thead>
            <tbody>
            <?php foreach ($adminAccounts as $username => $account): ?>
                <tr>
                    <td data-label="Benutzername">
                        <strong><?php echo htmlspecialchars($username); ?></strong>
                        <?php if ($username === $currentAdmin): ?>
                            <span class="status status-open" style="margin-left: 0.5rem;">Du</span>
                        <?php endif; ?>
                    </td>
                    <td data-label="Beschreibung">
                        <?php echo htmlspecialchars($account['description']); ?>
                    </td>
                    <td data-label="E-Mail">
                        <?php echo htmlspecialchars($account['email']); ?>
                    </td>
                    <td data-label="Aktionen">
                        <a href="settings.php?edit_description=<?php echo urlencode($username); ?>" class="btn btn-small btn-secondary">Profil ändern</a>
                        <a href="settings.php?change=<?php echo urlencode($username); ?>" class="btn btn-small btn-secondary">Passwort ändern</a>
                        <form method="POST" style="display: inline;" onsubmit="return confirm('Admin wirklich löschen?');">
                            <input type="hidden" name="csrf_token" value="<?php echo htmlspecialchars($csrfToken); ?>">
                            <input type="hidden" name="target_username" value="<?php echo htmlspecialchars($username); ?>">
                            <button type="submit" name="delete_admin" class="btn btn-small">Löschen</button>
                        </form>
                    </td>
                </tr>
            <?php endforeach; ?>
            </tbody>
        </table>
    </div>
</div>

<?php if ($selectedDescriptionUser !== null): ?>
    <div class="panel">
        <h3>Profil ändern: <?php echo htmlspecialchars($selectedDescriptionUser); ?></h3>
        <form method="POST">
            <input type="hidden" name="csrf_token" value="<?php echo htmlspecialchars($csrfToken); ?>">
            <input type="hidden" name="target_username" value="<?php echo htmlspecialchars($selectedDescriptionUser); ?>">
            <div class="form-group">
                <label for="description_edit">Beschreibung *</label>
                <input type="text" id="description_edit" name="description" maxlength="120" required value="<?php echo htmlspecialchars($adminAccounts[$selectedDescriptionUser]['description']); ?>">
            </div>
            <div class="form-group">
                <label for="email_edit">E-Mail *</label>
                <input type="email" id="email_edit" name="email" maxlength="190" required value="<?php echo htmlspecialchars($adminAccounts[$selectedDescriptionUser]['email']); ?>">
            </div>
            <button type="submit" name="update_description" class="btn">Profil speichern</button>
            <a href="settings.php" class="btn btn-secondary">Abbrechen</a>
        </form>
    </div>
<?php endif; ?>

<?php if ($selectedChangeUser !== null): ?>
    <div class="panel">
        <h3>Passwort ändern: <?php echo htmlspecialchars($selectedChangeUser); ?></h3>
        <form method="POST">
            <input type="hidden" name="csrf_token" value="<?php echo htmlspecialchars($csrfToken); ?>">
            <input type="hidden" name="target_username" value="<?php echo htmlspecialchars($selectedChangeUser); ?>">
            <div class="form-group">
                <label for="new_password">Neues Passwort (mind. 8 Zeichen) *</label>
                <input type="password" id="new_password" name="new_password" required minlength="8">
            </div>
            <div class="form-group">
                <label for="new_password_confirm">Neues Passwort bestätigen *</label>
                <input type="password" id="new_password_confirm" name="new_password_confirm" required minlength="8">
            </div>
            <button type="submit" name="change_password" class="btn">Passwort speichern</button>
            <a href="settings.php" class="btn btn-secondary">Abbrechen</a>
        </form>
    </div>
<?php endif; ?>

<?php include __DIR__ . '/../includes/footer.php'; ?>