Bump version to 0.9.6.20

WebDAV migration now routes per connection, preserves exact legacy fallbacks, supports API or connection-scoped fallback auth, and passes the final PHP 8.2-8.5 plus script syntax matrix.

.github/workflows/lint.yml

@@ -5,8 +5,12 @@ on:
   pull_request:
 
 jobs:
-  syntax:
+  php-syntax:
     runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        php-version: ['8.2', '8.3', '8.4', '8.5']
     steps:
       - name: Repository auschecken
         uses: actions/checkout@v4
@@ -14,7 +18,7 @@ jobs:
       - name: PHP installieren
         uses: shivammathur/setup-php@v2
         with:
-          php-version: '8.2'
+          php-version: ${{ matrix.php-version }}
           coverage: none
 
       - name: PHP Syntax pruefen
@@ -25,6 +29,32 @@ jobs:
             php -l "$file"
           done < <(find . -type f -name '*.php' -print0)
 
+      - name: Doppelte Bratonien-Funktionen pruefen
+        shell: bash
+        run: |
+          set -euo pipefail
+          duplicates="$(grep -RhoE 'function[[:space:]]+bratonien_tools_[A-Za-z0-9_]+' --include='*.php' . | awk '{print $2}' | sort | uniq -d || true)"
+          if [[ -n "$duplicates" ]]; then
+            echo "Doppelte globale Bratonien-Funktionen gefunden:" >&2
+            printf '%s\n' "$duplicates" >&2
+            exit 1
+          fi
+
+  script-syntax:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Repository auschecken
+        uses: actions/checkout@v4
+
+      - name: Admin JavaScript Syntax pruefen
+        shell: bash
+        run: |
+          set -euo pipefail
+          sed -n '/<script>/,/<\/script>/p' template/admin_tabs.tpl | sed '1d;$d' > /tmp/bratonien-admin-tabs.js
+          node --check /tmp/bratonien-admin-tabs.js
+          node --check js/nc_connector_edit_v2.js
+          node --check js/nc_connector_source_ui.js
+
       - name: Python Syntax pruefen
         shell: bash
         run: |

include/nc_connector_create_api.inc.php

@@ -5,6 +5,11 @@ if (!defined('PHPWG_ROOT_PATH'))
 }
 
 function bratonien_tools_nc_connector_create_local_api_first()
+{
+  throw new RuntimeException('Neue Verbindungen über die alte lokale PostgreSQL-/Storage-Struktur sind ab 0.9.6.2 gesperrt. Bestehende lokale Verbindungen bleiben für die schrittweise Migration weiterhin aktiv. Neue Verbindungen müssen über den WebDAV-Assistenten angelegt werden.');
+}
+
+function bratonien_tools_nc_connector_create_local_api_first_legacy()
 {
   $required = array(
     'nc_name' => 'Name',

include/nc_connector_edit.inc.php

@@ -0,0 +1,348 @@
+<?php
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die('Hacking attempt!');
+}
+
+function bratonien_tools_nc_connector_migration_state(array $connection)
+{
+  $config = isset($connection['config']) && is_array($connection['config']) ? $connection['config'] : array();
+  $credentials = bratonien_tools_nc_connector_scoped_secret($connection);
+  $missing = array();
+
+  if (trim((string)($config['nextcloud_url'] ?? '')) === '') $missing[] = 'Nextcloud-Adresse';
+  if (trim((string)($credentials['nextcloud_user'] ?? '')) === '') $missing[] = 'Nextcloud-Benutzer';
+  if ((string)($credentials['nextcloud_password'] ?? '') === '') $missing[] = 'Nextcloud-Passwort';
+
+  $api_id = trim((string)($credentials['api_key_id'] ?? ''));
+  $api_secret = trim((string)($credentials['api_key_secret'] ?? ''));
+  $fallback_user = trim((string)($credentials['piwigo_user'] ?? ''));
+  $fallback_password = (string)($credentials['piwigo_password'] ?? '');
+  $api_complete = $api_id !== '' && $api_secret !== '';
+  $fallback_complete = $fallback_user !== '' && $fallback_password !== '';
+
+  if (($api_id === '') !== ($api_secret === '')) $missing[] = 'vollstaendiger Piwigo-API-Zugang';
+  if (!$api_complete && !$fallback_complete) $missing[] = 'Piwigo-API oder Benutzer/Passwort-Fallback';
+
+  return array(
+    'ready'=>!$missing,
+    'missing'=>$missing,
+    'api_available'=>$api_complete,
+    'fallback_available'=>$fallback_complete,
+  );
+}
+
+function bratonien_tools_nc_connector_validate_nextcloud_access($base_url, $username, $password)
+{
+  $base_url = bratonien_tools_nc_wizard_normalize_url($base_url);
+  $username = trim((string)$username);
+  $password = (string)$password;
+  if ($username === '' || $password === '') throw new RuntimeException('Nextcloud-Benutzer und Passwort werden benoetigt.');
+
+  $status_response = bratonien_tools_nc_wizard_http($base_url.'/status.php');
+  if ($status_response['status'] < 200 || $status_response['status'] >= 300)
+  {
+    throw new RuntimeException('Die Nextcloud-Adresse konnte nicht bestaetigt werden.');
+  }
+  $status = json_decode((string)$status_response['body'], true);
+  if (!is_array($status) || empty($status['installed']))
+  {
+    throw new RuntimeException('Unter dieser Adresse wurde keine installierte Nextcloud erkannt.');
+  }
+
+  $user_response = bratonien_tools_nc_wizard_http(
+    $base_url.'/ocs/v2.php/cloud/user?format=json',
+    $username,
+    $password,
+    array('OCS-APIRequest: true')
+  );
+  if ($user_response['status'] === 401 || $user_response['status'] === 403)
+  {
+    throw new RuntimeException('Nextcloud hat Benutzername oder Passwort abgelehnt.');
+  }
+  if ($user_response['status'] < 200 || $user_response['status'] >= 300)
+  {
+    throw new RuntimeException('Nextcloud ist erreichbar, aber der Benutzerzugang konnte nicht geprueft werden.');
+  }
+  $user_data = bratonien_tools_nc_wizard_ocs_data($user_response['body']);
+  $resolved = trim((string)($user_data['id'] ?? $username));
+
+  return array(
+    'base_url'=>$base_url,
+    'username'=>$resolved !== '' ? $resolved : $username,
+  );
+}
+
+function bratonien_tools_nc_connector_validate_scoped_api($api_key_id, $api_key_secret)
+{
+  $api_key_id = trim((string)$api_key_id);
+  $api_key_secret = trim((string)$api_key_secret);
+  if ($api_key_id === '' || $api_key_secret === '')
+  {
+    throw new RuntimeException('Piwigo-API-Schluessel-ID und API-Geheimnis werden benoetigt.');
+  }
+
+  $status = bratonien_tools_nc_connector_piwigo_api_request($api_key_id, $api_key_secret, 'pwg.session.getStatus');
+  if (!is_array($status)) throw new RuntimeException('Piwigo hat keinen auswertbaren API-Benutzerstatus geliefert.');
+  $role = strtolower(trim((string)($status['status'] ?? '')));
+  if (!in_array($role, array('admin','webmaster'), true))
+  {
+    throw new RuntimeException('Der API-Key funktioniert, gehoert aber keinem Piwigo-Administrator/Webmaster.');
+  }
+
+  $method_result = bratonien_tools_nc_connector_piwigo_api_request($api_key_id, $api_key_secret, 'reflection.getMethodList');
+  $method_map = array();
+  bratonien_tools_nc_connector_collect_method_names($method_result, $method_map);
+  $required = array('bratonien.nc.syncProductive', 'bratonien.nc.syncOrphans');
+  $missing = array_values(array_diff($required, array_keys($method_map)));
+  if ($missing)
+  {
+    throw new RuntimeException('Der API-Key ist gueltig, aber benoetigte Bratonien-Sync-Methoden fehlen: '.implode(', ', $missing).'.');
+  }
+}
+
+function bratonien_tools_nc_connector_prepare_webdav_wizard_from_connection(array $connection, $mode)
+{
+  $id = (int)$connection['id'];
+  $config = isset($connection['config']) && is_array($connection['config']) ? $connection['config'] : array();
+  $credentials = bratonien_tools_nc_connector_scoped_secret($connection);
+
+  $base_url = trim((string)($config['nextcloud_url'] ?? ''));
+  $username = trim((string)($credentials['nextcloud_user'] ?? ''));
+  if ($username === '')
+  {
+    $username = trim((string)($config['nextcloud_access_user'] ?? $config['access_user'] ?? ''));
+  }
+  $password = (string)($credentials['nextcloud_password'] ?? '');
+
+  $roots = isset($config['roots']) && is_array($config['roots']) ? array_values($config['roots']) : array();
+  $selected = array();
+  $selected_ids = array();
+  foreach ($roots as $root)
+  {
+    $path = trim((string)($root['webdav_path'] ?? ''), '/');
+    $fileid = (int)($root['fileid'] ?? 0);
+    if ($fileid < 1) continue;
+    $selected[] = $path;
+    $selected_ids[$path] = $fileid;
+  }
+
+  $state = bratonien_tools_nc_wizard_state();
+  $state = array_merge($state, array(
+    'editing_connection_id'=>$id,
+    'editing_adapter'=>(string)$connection['adapter'],
+    'editing_mode'=>(string)$mode,
+    'connection_name'=>(string)$connection['name'],
+    'host_input'=>$base_url,
+    'base_url'=>$base_url,
+    'username'=>$username,
+    '_password'=>$password,
+    '_fallback_user'=>(string)($credentials['piwigo_user'] ?? ''),
+    '_fallback_password'=>(string)($credentials['piwigo_password'] ?? ''),
+    '_api_key_id'=>(string)($credentials['api_key_id'] ?? ''),
+    '_api_key_secret'=>(string)($credentials['api_key_secret'] ?? ''),
+    'api_status'=>trim((string)($credentials['api_key_id'] ?? '')) !== '' && trim((string)($credentials['api_key_secret'] ?? '')) !== '' ? 'ok' : 'pending',
+    'roots'=>$roots,
+    'directory_selected'=>$selected,
+    'directory_selected_fileids'=>$selected_ids,
+    'source_mode'=>'webdav-placeholder',
+    'transport'=>'webdav',
+  ));
+
+  if ($base_url !== '' && $username !== '' && $password !== '')
+  {
+    $state['step'] = 2;
+    $state['scan_ok'] = true;
+    $state['technical_stage'] = 'mounts';
+    $state['technical_source'] = 'WebDAV';
+    $state['technical_error'] = '';
+    $state['technical_complete'] = false;
+    $state['directory_selection_ready'] = true;
+    $state['directory_path'] = '';
+    $state['directory_parent'] = '';
+    $state['directory_children'] = array();
+    $state['directory_current_fileid'] = 0;
+
+    try
+    {
+      bratonien_tools_nc_wizard_refresh_directory_state($state, '');
+    }
+    catch (Throwable $e)
+    {
+      $state['step'] = 1;
+      $state['scan_ok'] = false;
+      $state['technical_error'] = $e->getMessage();
+    }
+  }
+  else
+  {
+    $state['step'] = 1;
+    $state['scan_ok'] = false;
+  }
+
+  bratonien_tools_nc_wizard_store($state);
+}
+
+function bratonien_tools_nc_connector_edit_start()
+{
+  $id = (int)($_POST['connection_id'] ?? 0);
+  $connection = bratonien_tools_nc_connector_connection($id, true);
+  if (!$connection) throw new RuntimeException('Connector-Verbindung wurde nicht gefunden.');
+
+  $config = isset($connection['config']) && is_array($connection['config']) ? $connection['config'] : array();
+  $is_webdav = (string)$connection['adapter'] === 'remote'
+    && (string)($config['source_mode'] ?? '') === 'webdav-placeholder';
+  if (!$is_webdav)
+  {
+    throw new RuntimeException('Diese Legacy-Verbindung wird direkt bearbeitet. Eine WebDAV-Migration ist eine separate Aktion.');
+  }
+
+  bratonien_tools_nc_connector_prepare_webdav_wizard_from_connection($connection, 'update');
+  return array('message'=>'Verbindung #'.$id.' wurde zum Bearbeiten geoeffnet.');
+}
+
+function bratonien_tools_nc_connector_migrate_start()
+{
+  $id = (int)($_POST['connection_id'] ?? 0);
+  $connection = bratonien_tools_nc_connector_connection($id, true);
+  if (!$connection) throw new RuntimeException('Connector-Verbindung wurde nicht gefunden.');
+  if ((string)$connection['adapter'] !== 'local')
+  {
+    throw new RuntimeException('Nur eine Legacy-Verbindung kann auf WebDAV migriert werden.');
+  }
+
+  $migration = bratonien_tools_nc_connector_migration_state($connection);
+  if (empty($migration['ready']))
+  {
+    throw new RuntimeException('Die WebDAV-Migration ist noch nicht bereit. Unter Bearbeiten fehlen: '.implode(', ', $migration['missing']).'.');
+  }
+
+  bratonien_tools_nc_connector_prepare_webdav_wizard_from_connection($connection, 'migrate');
+  return array('message'=>'Die WebDAV-Migration fuer Verbindung #'.$id.' wurde geoeffnet. Die bestehende Legacy-Verbindung bleibt bis zum erfolgreichen Umstieg unveraendert.');
+}
+
+function bratonien_tools_nc_connector_update_local_friendly()
+{
+  $id = (int)($_POST['connection_id'] ?? 0);
+  $connection = bratonien_tools_nc_connector_connection($id, true);
+  if (!$connection) throw new RuntimeException('Connector-Verbindung wurde nicht gefunden.');
+  if ((string)$connection['adapter'] !== 'local') throw new RuntimeException('Diese Bearbeitung ist nur fuer Legacy-Verbindungen vorgesehen.');
+
+  $name = trim((string)($_POST['connection_name'] ?? ''));
+  if ($name === '') throw new RuntimeException('Bitte einen Namen fuer die Verbindung angeben.');
+
+  $config = isset($connection['config']) && is_array($connection['config']) ? $connection['config'] : array();
+  $host = trim((string)($_POST['nc_host'] ?? ''));
+  $port = (int)($_POST['nc_port'] ?? 5432);
+  $database = trim((string)($_POST['nc_database'] ?? ''));
+  $user = trim((string)($_POST['nc_user'] ?? ''));
+  $gallery_root = rtrim(trim((string)($_POST['nc_gallery_root'] ?? '')), '/');
+  $source_view = trim((string)($_POST['nc_source_view'] ?? ''));
+  $activity_view = trim((string)($_POST['nc_activity_view'] ?? ''));
+
+  if ($host === '') throw new RuntimeException('Datenbank-Server fehlt.');
+  if ($port < 1 || $port > 65535) throw new RuntimeException('Der Datenbank-Port ist ungueltig.');
+  if ($database === '') throw new RuntimeException('Datenbankname fehlt.');
+  if ($user === '') throw new RuntimeException('Reader-Benutzer fehlt.');
+  if ($gallery_root === '' || $gallery_root[0] !== '/') throw new RuntimeException('Der Piwigo-Galerieordner muss ein absoluter Pfad sein.');
+  if ($source_view === '' || $activity_view === '') throw new RuntimeException('Die gespeicherten Datenbankansichten duerfen nicht leer sein.');
+  bratonien_tools_nc_connector_view_name($source_view);
+  bratonien_tools_nc_connector_view_name($activity_view);
+
+  $storage_ids = isset($_POST['nc_storage_id']) && is_array($_POST['nc_storage_id']) ? $_POST['nc_storage_id'] : array();
+  $storage_prefixes = isset($_POST['nc_source_prefix']) && is_array($_POST['nc_source_prefix']) ? $_POST['nc_source_prefix'] : array();
+  $storage_mounts = isset($_POST['nc_local_mount']) && is_array($_POST['nc_local_mount']) ? $_POST['nc_local_mount'] : array();
+  $storages = array();
+  $count = max(count($storage_ids), count($storage_prefixes), count($storage_mounts));
+  for ($index = 0; $index < $count; $index++)
+  {
+    $storage_id = trim((string)($storage_ids[$index] ?? ''));
+    $prefix = trim((string)($storage_prefixes[$index] ?? ''), '/');
+    $mount = rtrim(trim((string)($storage_mounts[$index] ?? '')), '/');
+    if ($storage_id === '' && $prefix === '' && $mount === '') continue;
+    if ($storage_id === '') throw new RuntimeException('Bei einem Speicherort fehlt die Storage-ID.');
+    if ($mount === '' || $mount[0] !== '/') throw new RuntimeException('Bei einem Speicherort fehlt ein gueltiger lokaler Pfad.');
+    $storages[] = array('storage_id'=>$storage_id, 'source_prefix'=>$prefix, 'local_mount'=>$mount);
+  }
+  if (!$storages) throw new RuntimeException('Mindestens ein Speicherort muss vorhanden sein.');
+
+  $credentials = bratonien_tools_nc_connector_scoped_secret($connection);
+  $new_db_password = (string)($_POST['nc_db_password'] ?? '');
+  if ($new_db_password !== '') $credentials['db_password'] = $new_db_password;
+  if (trim((string)($credentials['db_password'] ?? '')) === '') throw new RuntimeException('Fuer die Legacy-Verbindung ist kein Datenbankpasswort gespeichert.');
+
+  $nextcloud_url = trim((string)($_POST['nc_nextcloud_url'] ?? ($config['nextcloud_url'] ?? '')));
+  $nextcloud_user = trim((string)($_POST['nc_nextcloud_user'] ?? ($credentials['nextcloud_user'] ?? '')));
+  $new_nextcloud_password = (string)($_POST['nc_nextcloud_password'] ?? '');
+  if ($new_nextcloud_password !== '') $credentials['nextcloud_password'] = $new_nextcloud_password;
+  $nextcloud_password = (string)($credentials['nextcloud_password'] ?? '');
+
+  $api_key_id = trim((string)($_POST['nc_connection_api_key_id'] ?? ($credentials['api_key_id'] ?? '')));
+  $new_api_secret = trim((string)($_POST['nc_connection_api_key_secret'] ?? ''));
+  $old_api_id = trim((string)($credentials['api_key_id'] ?? ''));
+  if ($api_key_id !== $old_api_id && $new_api_secret === '')
+  {
+    throw new RuntimeException('Wenn die API-Schluessel-ID geaendert wird, muss auch das API-Geheimnis neu eingegeben werden.');
+  }
+  if ($new_api_secret !== '') $credentials['api_key_secret'] = $new_api_secret;
+  $api_key_secret = trim((string)($credentials['api_key_secret'] ?? ''));
+
+  if (($nextcloud_url === '' || $nextcloud_user === '' || $nextcloud_password === '') && ($nextcloud_url !== '' || $nextcloud_user !== '' || $nextcloud_password !== ''))
+  {
+    throw new RuntimeException('Nextcloud-Adresse, Nextcloud-Benutzer und Nextcloud-Passwort muessen fuer WebDAV gemeinsam vollstaendig sein.');
+  }
+  if (($api_key_id === '') !== ($api_key_secret === ''))
+  {
+    throw new RuntimeException('Piwigo-API-Schluessel-ID und API-Geheimnis muessen gemeinsam vollstaendig sein.');
+  }
+
+  if ($nextcloud_url !== '')
+  {
+    $validated_nc = bratonien_tools_nc_connector_validate_nextcloud_access($nextcloud_url, $nextcloud_user, $nextcloud_password);
+    $nextcloud_url = $validated_nc['base_url'];
+    $nextcloud_user = $validated_nc['username'];
+    $credentials['nextcloud_user'] = $nextcloud_user;
+  }
+  if ($api_key_id !== '')
+  {
+    bratonien_tools_nc_connector_validate_scoped_api($api_key_id, $api_key_secret);
+    $credentials['api_key_id'] = $api_key_id;
+  }
+
+  $config['host'] = $host;
+  $config['port'] = (string)$port;
+  $config['database'] = $database;
+  $config['user'] = $user;
+  $config['source_view'] = $source_view;
+  $config['activity_view'] = $activity_view;
+  $config['gallery_root'] = $gallery_root;
+  $config['quiet_seconds'] = max(0, (int)($_POST['nc_quiet_seconds'] ?? ($config['quiet_seconds'] ?? 120)));
+  $config['max_wait_seconds'] = max(60, (int)($_POST['nc_max_wait_seconds'] ?? ($config['max_wait_seconds'] ?? 900)));
+  $config['full_sync_seconds'] = max(300, (int)($_POST['nc_full_sync_seconds'] ?? ($config['full_sync_seconds'] ?? 86400)));
+  $config['storages'] = $storages;
+  if ($nextcloud_url !== '')
+  {
+    $config['nextcloud_url'] = $nextcloud_url;
+    $config['access_user'] = $nextcloud_user;
+    $config['nextcloud_access_user'] = $nextcloud_user;
+  }
+  $config['piwigo_auth'] = 'connection-scoped';
+  $config['api_enabled'] = $api_key_id !== '' && $api_key_secret !== '';
+  unset($config['verification']);
+
+  $config_json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($config_json)) throw new RuntimeException('Connector-Konfiguration konnte nicht serialisiert werden.');
+  $secret_payload = json_encode($credentials, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($secret_payload)) throw new RuntimeException('Connector-Zugangsdaten konnten nicht serialisiert werden.');
+  $secret_blob = bratonien_tools_nc_connector_encrypt_secret($secret_payload);
+
+  $table = bratonien_tools_nc_connector_table();
+  $now = date('Y-m-d H:i:s');
+  pwg_query("UPDATE `$table` SET name='".pwg_db_real_escape_string($name)."', config_json='".pwg_db_real_escape_string($config_json)."', secret_blob='".pwg_db_real_escape_string($secret_blob)."', updated='".pwg_db_real_escape_string($now)."' WHERE id=".$id." LIMIT 1");
+
+  $updated = bratonien_tools_nc_connector_connection($id, true);
+  $migration = $updated ? bratonien_tools_nc_connector_migration_state($updated) : array('ready'=>false);
+  return array(
+    'message'=>'Verbindung #'.$id.' wurde gespeichert. '.(!empty($migration['ready']) ? 'Die WebDAV-Migration ist jetzt bereit.' : 'Die WebDAV-Migration ist noch nicht vollstaendig vorbereitet.'),
+  );
+}

include/nc_connector_webdav.inc.php

@@ -5,10 +5,57 @@ if (!defined('PHPWG_ROOT_PATH'))
 }
 
 /**
- * Create a disabled WebDAV-backed connector beside the existing local modes.
+ * Link a WebDAV successor with the exact legacy connection selected for migration.
+ * The caller must execute this inside the same transaction that creates the successor.
+ */
+function bratonien_tools_nc_connector_pair_migration_fallback($legacy_id, $webdav_id, array &$webdav_config, $now)
+{
+  $legacy_id = (int)$legacy_id;
+  $webdav_id = (int)$webdav_id;
+  if ($legacy_id < 1 || $webdav_id < 1 || $legacy_id === $webdav_id)
+  {
+    throw new RuntimeException('Die Migrationszuordnung ist ungueltig.');
+  }
+
+  $legacy = bratonien_tools_nc_connector_connection($legacy_id, false);
+  if (!$legacy || (string)$legacy['adapter'] !== 'local')
+  {
+    throw new RuntimeException('Die ausgewaehlte Legacy-Verbindung fuer die Migration ist nicht mehr verfuegbar.');
+  }
+
+  $legacy_config = isset($legacy['config']) && is_array($legacy['config']) ? $legacy['config'] : array();
+  $webdav_config['migration'] = array(
+    'role'=>'webdav-primary-candidate',
+    'legacy_fallback_connection_id'=>$legacy_id,
+    'fallback_policy'=>'keep-running',
+    'paired_at'=>(string)$now,
+    'cutover_state'=>'parallel',
+  );
+  $legacy_config['migration'] = array(
+    'role'=>'legacy-fallback',
+    'webdav_successor_connection_id'=>$webdav_id,
+    'fallback_policy'=>'keep-running',
+    'paired_at'=>(string)$now,
+    'cutover_state'=>'parallel',
+  );
+
+  $legacy_json = json_encode($legacy_config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($legacy_json))
+  {
+    throw new RuntimeException('Die bestehende Verbindung konnte nicht als Migrations-Fallback markiert werden.');
+  }
+
+  $table = bratonien_tools_nc_connector_table();
+  pwg_query("UPDATE `$table` SET config_json='".pwg_db_real_escape_string($legacy_json)."', updated='".pwg_db_real_escape_string((string)$now)."' WHERE id=".$legacy_id." AND adapter='local' LIMIT 1");
+
+  return $legacy_id;
+}
+
+/**
+ * Create or update a WebDAV-backed connector from the user-facing wizard.
  *
- * This deliberately does not activate, migrate or modify any existing
+ * Remote connections are updated in place. A legacy connection is paired only
- * connection. It only persists the data required for the parallel WebDAV path.
+ * when the wizard was explicitly opened in migration mode for that connection.
  */
 function bratonien_tools_nc_connector_create_webdav_placeholder_from_wizard()
 {
@@ -16,7 +63,7 @@ function bratonien_tools_nc_connector_create_webdav_placeholder_from_wizard()
 
   if (empty($state['scan_ok']) || empty($state['technical_complete']))
   {
-    throw new RuntimeException('Die WebDAV-Verbindung wurde im Assistenten noch nicht vollständig vorbereitet.');
+    throw new RuntimeException('Die WebDAV-Verbindung wurde im Assistenten noch nicht vollstaendig vorbereitet.');
   }
 
   $base_url = rtrim(trim((string)($state['base_url'] ?? '')), '/');
@@ -24,7 +71,7 @@ function bratonien_tools_nc_connector_create_webdav_placeholder_from_wizard()
   $password = (string)($state['_password'] ?? '');
   if ($base_url === '' || $username === '' || $password === '')
   {
-    throw new RuntimeException('Für den WebDAV-Testpfad fehlen Nextcloud-Adresse oder Zugangsdaten.');
+    throw new RuntimeException('Fuer den WebDAV-Zugang fehlen Nextcloud-Adresse oder Zugangsdaten.');
   }
 
   $selected = isset($state['directory_selected']) && is_array($state['directory_selected'])
@@ -33,17 +80,19 @@ function bratonien_tools_nc_connector_create_webdav_placeholder_from_wizard()
   $selected_ids = isset($state['directory_selected_fileids']) && is_array($state['directory_selected_fileids'])
     ? $state['directory_selected_fileids']
     : array();
-  $selected = array_values(array_filter($selected, function($path) { return $path !== ''; }));
+  if (!$selected) throw new RuntimeException('Bitte mindestens ein Nextcloud-Verzeichnis auswaehlen.');
-  if (!$selected) throw new RuntimeException('Bitte mindestens ein Nextcloud-Verzeichnis für den WebDAV-Testpfad auswählen.');
 
   $roots = array();
   foreach ($selected as $path)
   {
     $fileid = isset($selected_ids[$path]) ? (int)$selected_ids[$path] : 0;
-    if ($fileid < 1) throw new RuntimeException('Für ein ausgewähltes Nextcloud-Verzeichnis fehlt die eindeutige Datei-ID.');
+    if ($fileid < 1) throw new RuntimeException('Fuer ein ausgewaehltes Nextcloud-Verzeichnis fehlt die eindeutige Datei-ID.');
+    $display_name = $path === ''
+      ? (trim((string)($state['display_name'] ?? '')) !== '' ? trim((string)$state['display_name']) : $username)
+      : basename($path);
     $roots[] = array(
       'fileid'=>$fileid,
-      'display_name'=>basename($path),
+      'display_name'=>$display_name,
       'webdav_path'=>$path,
     );
   }
@@ -59,6 +108,22 @@ function bratonien_tools_nc_connector_create_webdav_placeholder_from_wizard()
   $fallback_password = (string)($state['_fallback_password'] ?? '');
   $api_enabled = $api_key_id !== '' && $api_key_secret !== '';
 
+  $editing_id = (int)($state['editing_connection_id'] ?? 0);
+  $editing_mode = (string)($state['editing_mode'] ?? '');
+  $editing_connection = $editing_id > 0 ? bratonien_tools_nc_connector_connection($editing_id, false) : null;
+  $editing_remote = $editing_connection
+    && (string)$editing_connection['adapter'] === 'remote'
+    && (string)($editing_connection['config']['source_mode'] ?? '') === 'webdav-placeholder'
+    && $editing_mode === 'update';
+  $migrating_legacy = $editing_connection
+    && (string)$editing_connection['adapter'] === 'local'
+    && $editing_mode === 'migrate';
+
+  if ($editing_mode === 'migrate' && !$migrating_legacy)
+  {
+    throw new RuntimeException('Die fuer die Migration ausgewaehlte Legacy-Verbindung ist nicht mehr verfuegbar.');
+  }
+
   $config = array(
     'origin'=>'native',
     'source_mode'=>'webdav-placeholder',
@@ -78,6 +143,19 @@ function bratonien_tools_nc_connector_create_webdav_placeholder_from_wizard()
     'api_enabled'=>$api_enabled,
   );
 
+  if ($editing_remote)
+  {
+    $old_config = is_array($editing_connection['config'] ?? null) ? $editing_connection['config'] : array();
+    foreach (array('state_dir','status_file','parallel_gallery_root','source_fingerprint','runtime','migration') as $preserve)
+    {
+      if (array_key_exists($preserve, $old_config)) $config[$preserve] = $old_config[$preserve];
+    }
+    foreach (array('quiet_seconds','max_wait_seconds','full_sync_seconds') as $preserve)
+    {
+      if (isset($old_config[$preserve])) $config[$preserve] = (int)$old_config[$preserve];
+    }
+  }
+
   foreach (array('product'=>'nextcloud_product', 'version'=>'nextcloud_version') as $state_key=>$config_key)
   {
     $value = trim((string)($state[$state_key] ?? ''));
@@ -96,38 +174,82 @@ function bratonien_tools_nc_connector_create_webdav_placeholder_from_wizard()
   ), JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
   if (!is_string($secret_payload)) throw new RuntimeException('WebDAV-Zugangsdaten konnten nicht serialisiert werden.');
 
-  $config_json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
-  if (!is_string($config_json)) throw new RuntimeException('WebDAV-Konfiguration konnte nicht serialisiert werden.');
-
   bratonien_tools_nc_connector_ensure_table();
   $table = bratonien_tools_nc_connector_table();
   $now = date('Y-m-d H:i:s');
-  $connection_key = 'webdav-'.bin2hex(random_bytes(12));
   $secret_blob = bratonien_tools_nc_connector_encrypt_secret($secret_payload);
 
-  pwg_query("INSERT INTO `$table` (connection_key,name,adapter,enabled,takeover_state,config_json,secret_blob,created,updated) VALUES ('"
+  if ($editing_remote)
-    .pwg_db_real_escape_string($connection_key)."','"
-    .pwg_db_real_escape_string($name)."','remote',0,'disabled','"
-    .pwg_db_real_escape_string($config_json)."','"
-    .pwg_db_real_escape_string($secret_blob)."','"
-    .pwg_db_real_escape_string($now)."','"
-    .pwg_db_real_escape_string($now)."')");
-
-  $id = (int)pwg_db_insert_id();
-  if ($id < 1) throw new RuntimeException('Die WebDAV-Testverbindung konnte nicht eindeutig angelegt werden.');
-
-  $config['state_dir'] = '/var/lib/bratonien-tools/nc-connector/connection-'.$id;
-  $config['status_file'] = $config['state_dir'].'/connector-status.json';
-  $config_json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
-  if (!is_string($config_json))
   {
-    pwg_query("DELETE FROM `$table` WHERE id=".$id." LIMIT 1");
+    $config['state_dir'] = trim((string)($config['state_dir'] ?? '')) !== '' ? $config['state_dir'] : '/var/lib/bratonien-tools/nc-connector/connection-'.$editing_id;
-    throw new RuntimeException('Die WebDAV-Testverbindung konnte nach dem Anlegen nicht serialisiert werden.');
+    $config['status_file'] = trim((string)($config['status_file'] ?? '')) !== '' ? $config['status_file'] : $config['state_dir'].'/connector-status.json';
+    $config_json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+    if (!is_string($config_json)) throw new RuntimeException('WebDAV-Konfiguration konnte nicht serialisiert werden.');
+
+    pwg_query("UPDATE `$table` SET name='".pwg_db_real_escape_string($name)."', config_json='".pwg_db_real_escape_string($config_json)."', secret_blob='".pwg_db_real_escape_string($secret_blob)."', updated='".pwg_db_real_escape_string($now)."' WHERE id=".$editing_id." AND adapter='remote' LIMIT 1");
+    unset($_SESSION['bratonien_nc_wizard']);
+
+    return array(
+      'connection_id'=>$editing_id,
+      'message'=>'WebDAV-Verbindung #'.$editing_id.' wurde gespeichert. Der naechste Connector-Lauf verwendet die neuen Einstellungen.',
+    );
+  }
+
+  $config_json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($config_json)) throw new RuntimeException('WebDAV-Konfiguration konnte nicht serialisiert werden.');
+
+  $connection_key = 'webdav-'.bin2hex(random_bytes(12));
+  $legacy_fallback_id = null;
+  $id = 0;
+
+  pwg_query('START TRANSACTION');
+  try
+  {
+    pwg_query("INSERT INTO `$table` (connection_key,name,adapter,enabled,takeover_state,config_json,secret_blob,created,updated) VALUES ('"
+      .pwg_db_real_escape_string($connection_key)."','"
+      .pwg_db_real_escape_string($name)."','remote',0,'disabled','"
+      .pwg_db_real_escape_string($config_json)."','"
+      .pwg_db_real_escape_string($secret_blob)."','"
+      .pwg_db_real_escape_string($now)."','"
+      .pwg_db_real_escape_string($now)."')");
+
+    $id = (int)pwg_db_insert_id();
+    if ($id < 1) throw new RuntimeException('Die WebDAV-Verbindung konnte nicht eindeutig angelegt werden.');
+
+    $config['state_dir'] = '/var/lib/bratonien-tools/nc-connector/connection-'.$id;
+    $config['status_file'] = $config['state_dir'].'/connector-status.json';
+    if ($migrating_legacy)
+    {
+      $legacy_fallback_id = bratonien_tools_nc_connector_pair_migration_fallback($editing_id, $id, $config, $now);
+    }
+
+    $config_json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+    if (!is_string($config_json))
+    {
+      throw new RuntimeException('Die WebDAV-Verbindung konnte nach dem Anlegen nicht serialisiert werden.');
+    }
+    pwg_query("UPDATE `$table` SET config_json='".pwg_db_real_escape_string($config_json)."' WHERE id=".$id." AND adapter='remote' LIMIT 1");
+    pwg_query('COMMIT');
+  }
+  catch (Throwable $e)
+  {
+    pwg_query('ROLLBACK');
+    throw $e;
+  }
+
+  unset($_SESSION['bratonien_nc_wizard']);
+
+  if ($legacy_fallback_id !== null)
+  {
+    return array(
+      'connection_id'=>$id,
+      'legacy_fallback_connection_id'=>$legacy_fallback_id,
+      'message'=>'WebDAV-Nachfolger wurde angelegt. Die bestehende lokale Verbindung #'.$legacy_fallback_id.' bleibt als Fallback erhalten.',
+    );
   }
-  pwg_query("UPDATE `$table` SET config_json='".pwg_db_real_escape_string($config_json)."' WHERE id=".$id." LIMIT 1");
 
   return array(
     'connection_id'=>$id,
-    'message'=>'Parallele WebDAV-Testverbindung wurde deaktiviert angelegt. Bestehende Verbindungen blieben unverändert.',
+    'message'=>'WebDAV-Verbindung wurde angelegt.',
   );
 }

include/nc_connector_wizard_webdav_flow.inc.php

@@ -126,7 +126,6 @@ function bratonien_tools_nc_wizard_save_sources_dispatch()
   $selected = isset($state['directory_selected']) && is_array($state['directory_selected'])
     ? array_values(array_unique(array_map(function($path) { return trim((string)$path, '/'); }, $state['directory_selected'])))
     : array();
-  $selected = array_values(array_filter($selected, function($path) { return $path !== ''; }));
   if (!$selected)
   {
     throw new RuntimeException('Bitte mindestens ein Nextcloud-Verzeichnis auswählen.');
@@ -143,9 +142,12 @@ function bratonien_tools_nc_wizard_save_sources_dispatch()
     {
       throw new RuntimeException('Für eine Auswahl fehlt die eindeutige Nextcloud-Datei-ID. Bitte das Verzeichnis erneut auswählen.');
     }
+    $display_name = $path === ''
+      ? (trim((string)($state['display_name'] ?? '')) !== '' ? trim((string)$state['display_name']) : (string)$state['username'])
+      : basename($path);
     $roots[] = array(
       'fileid'=>$fileid,
-      'display_name'=>basename($path),
+      'display_name'=>$display_name,
       'webdav_path'=>$path,
     );
   }
@@ -156,9 +158,35 @@ function bratonien_tools_nc_wizard_save_sources_dispatch()
   $state['technical_source'] = 'WebDAV-Verzeichnisse ausgewählt';
   $state['technical_error'] = '';
   $state['directory_selection_ready'] = false;
-  bratonien_tools_nc_wizard_store($state);
 
-  return array('message'=>'WebDAV-Verzeichnisse wurden übernommen. Die Verbindung ist für den parallelen Testweg vorbereitet.');
+  if ((string)($state['editing_mode'] ?? '') === 'migrate')
+  {
+    $editing_id = (int)($state['editing_connection_id'] ?? 0);
+    $connection = $editing_id > 0 ? bratonien_tools_nc_connector_connection($editing_id, true) : null;
+    if (!$connection || (string)$connection['adapter'] !== 'local')
+    {
+      throw new RuntimeException('Die zu migrierende Legacy-Verbindung ist nicht mehr verfügbar.');
+    }
+
+    $migration = bratonien_tools_nc_connector_migration_state($connection);
+    if (empty($migration['ready']))
+    {
+      throw new RuntimeException('Die WebDAV-Migration kann noch nicht abgeschlossen werden. Es fehlen: '.implode(', ', $migration['missing']).'.');
+    }
+
+    $credentials = bratonien_tools_nc_connector_scoped_secret($connection);
+    $state['_api_key_id'] = (string)($credentials['api_key_id'] ?? '');
+    $state['_api_key_secret'] = (string)($credentials['api_key_secret'] ?? '');
+    $state['api_status'] = !empty($migration['api_available']) ? 'ok' : 'skipped';
+    $state['api_error'] = '';
+    $state['step'] = 4;
+    bratonien_tools_nc_wizard_store($state);
+
+    return array('message'=>'WebDAV-Quelle wurde übernommen. Mit „Migration starten“ wird jetzt der WebDAV-Nachfolger angelegt; die Legacy-Verbindung bleibt als Fallback erhalten.');
+  }
+
+  bratonien_tools_nc_wizard_store($state);
+  return array('message'=>'WebDAV-Verzeichnisse wurden übernommen. Die Verbindung ist für den nächsten Einrichtungsschritt vorbereitet.');
 }
 
 function bratonien_tools_nc_wizard_finish_dispatch()

include/tool_registry.inc.php

@@ -4,6 +4,23 @@ if (!defined('PHPWG_ROOT_PATH'))
   die('Hacking attempt!');
 }
 
+if (isset($GLOBALS['template']) && is_object($GLOBALS['template']) && method_exists($GLOBALS['template'], 'func_combine_script'))
+{
+  $script_version = function_exists('bratonien_tools_current_version') ? bratonien_tools_current_version() : '0.9.6.15';
+  $GLOBALS['template']->func_combine_script(array(
+    'id'=>'bratonien_nc_connector_edit_v2',
+    'path'=>BRATONIEN_TOOLS_PATH.'js/nc_connector_edit_v2.js',
+    'load'=>'footer',
+    'version'=>$script_version,
+  ));
+  $GLOBALS['template']->func_combine_script(array(
+    'id'=>'bratonien_nc_connector_source_ui',
+    'path'=>BRATONIEN_TOOLS_PATH.'js/nc_connector_source_ui.js',
+    'load'=>'footer',
+    'version'=>$script_version,
+  ));
+}
+
 require_once(BRATONIEN_TOOLS_PATH . 'tools/image_cache.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'tools/watermark.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'tools/watermark_profiles.inc.php');
@@ -30,6 +47,7 @@ require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_generic_scope.inc.php'
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_delete_safe.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_webdav.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_wizard_webdav_flow.inc.php');
+require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_edit.inc.php');
 
 function bratonien_tools_get_tools()
 {
@@ -56,6 +74,9 @@ function bratonien_tools_get_tools()
     'album_share_revoke' => array('handler' => 'bratonien_tools_revoke_album_share'),
     'nc_connector_create_local' => array('handler' => 'bratonien_tools_nc_connector_create_local_api_first'),
     'nc_connector_create_webdav_parallel' => array('handler' => 'bratonien_tools_nc_connector_create_webdav_placeholder_from_wizard'),
+    'nc_connector_edit_start' => array('handler' => 'bratonien_tools_nc_connector_edit_start'),
+    'nc_connector_migrate_start' => array('handler' => 'bratonien_tools_nc_connector_migrate_start'),
+    'nc_connector_update_local' => array('handler' => 'bratonien_tools_nc_connector_update_local_friendly'),
     'nc_connector_delete' => array('handler' => 'bratonien_tools_nc_connector_delete_safe'),
     'nc_connector_update_name' => array('handler' => 'bratonien_tools_nc_connector_update_name'),
     'nc_connector_update_technical' => array('handler' => 'bratonien_tools_nc_connector_update_technical'),

js/admin_tabs.js

@@ -1,6 +1,94 @@
 (function () {
   'use strict';
 
+  function initNcRouteStatus() {
+    var section = document.getElementById('nc-connector');
+    if (!section) return;
+
+    var statusCard = section.querySelector('.bratonien-grid .bratonien-card');
+    if (!statusCard) return;
+
+    var grid = statusCard.querySelector('.bratonien-form-grid');
+    if (!grid) return;
+
+    var routeLabel = document.createElement('span');
+    routeLabel.className = 'bratonien-label';
+    routeLabel.textContent = 'Aktiver Datenweg';
+
+    var routeValue = document.createElement('strong');
+    routeValue.setAttribute('data-nc-route-status', '');
+    routeValue.textContent = 'Noch kein Lauf erfasst';
+
+    var routeTimeLabel = document.createElement('span');
+    routeTimeLabel.className = 'bratonien-label';
+    routeTimeLabel.textContent = 'Datenweg zuletzt';
+
+    var routeTimeValue = document.createElement('strong');
+    routeTimeValue.setAttribute('data-nc-route-time', '');
+    routeTimeValue.textContent = 'Nicht verfügbar';
+
+    grid.appendChild(routeLabel);
+    grid.appendChild(routeValue);
+    grid.appendChild(routeTimeLabel);
+    grid.appendChild(routeTimeValue);
+
+    var detail = document.createElement('p');
+    detail.className = 'bratonien-base-note';
+    detail.setAttribute('data-nc-route-detail', '');
+    detail.textContent = 'Der Datenweg wird nach dem nächsten Connector-Lauf angezeigt.';
+    statusCard.appendChild(detail);
+
+    var basePath = window.location.pathname.replace(/admin\.php.*$/, '');
+    var statusUrl = basePath + '_data/bratonien-tools/nc-connector-status/route-status.json';
+
+    function formatTime(timestamp) {
+      if (!timestamp) return 'Nicht verfügbar';
+      var date = new Date(Number(timestamp) * 1000);
+      if (Number.isNaN(date.getTime())) return 'Nicht verfügbar';
+      return date.toLocaleString('de-DE');
+    }
+
+    function render(data) {
+      var label = data && data.label ? String(data.label) : 'Unbekannt';
+      var route = data && data.route ? String(data.route) : '';
+      routeValue.textContent = label;
+      routeTimeValue.textContent = formatTime(data && data.timestamp);
+
+      if (route === 'webdav') {
+        routeValue.textContent = 'WEBDAV PRIMÄR';
+        detail.textContent = 'Portierung läuft über WebDAV. Legacy wurde in diesem Lauf nicht benutzt.';
+      } else if (route === 'legacy_fallback') {
+        routeValue.textContent = 'LEGACY-FALLBACK AKTIV';
+        detail.textContent = 'WebDAV war nicht erfolgreich. Dieser Lauf wurde über die alte Struktur abgefangen.';
+      } else if (route === 'failed') {
+        routeValue.textContent = 'FEHLER - KEIN ERFOLGREICHER DATENWEG';
+        detail.textContent = data && data.detail ? String(data.detail) : 'WebDAV und Fallback sind fehlgeschlagen.';
+      } else {
+        detail.textContent = data && data.detail ? String(data.detail) : 'Unbekannter Datenweg.';
+      }
+    }
+
+    function refresh() {
+      fetch(statusUrl + '?t=' + Date.now(), {
+        cache: 'no-store',
+        credentials: 'same-origin'
+      })
+        .then(function (response) {
+          if (!response.ok) throw new Error('status unavailable');
+          return response.json();
+        })
+        .then(render)
+        .catch(function () {
+          routeValue.textContent = 'Noch kein Lauf erfasst';
+          routeTimeValue.textContent = 'Nicht verfügbar';
+          detail.textContent = 'Nach dem nächsten Connector-Lauf wird hier WebDAV oder Legacy-Fallback angezeigt.';
+        });
+    }
+
+    refresh();
+    window.setInterval(refresh, 10000);
+  }
+
   function initBratonienTabs() {
     var admin = document.querySelector('.bratonien-admin');
     if (!admin) return;
@@ -113,9 +201,14 @@
     activate(initial, false);
   }
 
-  if (document.readyState === 'loading') {
+  function init() {
-    document.addEventListener('DOMContentLoaded', initBratonienTabs);
-  } else {
     initBratonienTabs();
+    initNcRouteStatus();
+  }
+
+  if (document.readyState === 'loading') {
+    document.addEventListener('DOMContentLoaded', init);
+  } else {
+    init();
   }
 })();

js/nc_connector_edit_v2.js

@@ -0,0 +1,324 @@
+(function () {
+  'use strict';
+
+  function ready(callback) {
+    if (document.readyState === 'loading') {
+      document.addEventListener('DOMContentLoaded', function () { window.setTimeout(callback, 0); });
+    } else {
+      window.setTimeout(callback, 0);
+    }
+  }
+
+  ready(function () {
+    var section = document.getElementById('nc-connector');
+    if (!section) return;
+
+    var pwgTokenInput = section.querySelector('input[name="pwg_token"]');
+    var pwgToken = pwgTokenInput ? pwgTokenInput.value : '';
+    var modeKey = 'bratonienNcWizardMode';
+
+    function escapeHtml(value) {
+      return String(value == null ? '' : value).replace(/[&<>"']/g, function (c) {
+        return {'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot',"'":'&#039;'}[c];
+      });
+    }
+
+    function setMode(value) {
+      try { sessionStorage.setItem(modeKey, value); } catch (e) {}
+    }
+
+    function postForm(label, tool, id, mode) {
+      var form = document.createElement('form');
+      form.method = 'post';
+      form.style.display = 'inline';
+      form.dataset.ncV2Action = tool;
+      form.innerHTML = '<input type="hidden" name="pwg_token" value="'+escapeHtml(pwgToken)+'">'
+        + '<input type="hidden" name="connection_id" value="'+escapeHtml(id)+'">'
+        + '<button class="buttonLike" type="submit" name="bratonien_tool" value="'+escapeHtml(tool)+'">'+escapeHtml(label)+'</button>';
+      if (mode) form.addEventListener('submit', function () { setMode(mode); }, true);
+      return form;
+    }
+
+    function loadConnection(id) {
+      return fetch('plugins/bratonien_tools/nc-connector-edit-data.php?connection_id='+encodeURIComponent(id)+'&_='+Date.now(), {
+        credentials:'same-origin',
+        cache:'no-store',
+        headers:{'Accept':'application/json'}
+      }).then(function (response) {
+        return response.json().then(function (data) {
+          if (!response.ok) throw new Error(data.error || ('HTTP '+response.status));
+          return data;
+        });
+      });
+    }
+
+    function dialog() {
+      var node = document.getElementById('bratonien-nc-connection-edit-v2');
+      if (node) return node;
+      node = document.createElement('dialog');
+      node.id = 'bratonien-nc-connection-edit-v2';
+      node.className = 'bratonien-edit-dialog';
+      node.innerHTML = '<div class="bratonien-edit-dialog__body">'
+        + '<div style="display:flex;align-items:flex-start;justify-content:space-between;gap:1rem">'
+        + '<div><h4 style="margin:0">Verbindung bearbeiten</h4><p class="bratonien-base-note" style="margin:.35rem 0 0">Alle Daten dieser Verbindung werden hier gepflegt. Eine Migration ist ein eigener Vorgang.</p></div>'
+        + '<button type="button" class="buttonLike" data-edit-v2-close>Schließen</button></div>'
+        + '<div data-edit-v2-content style="margin-top:1rem"></div></div>';
+      document.body.appendChild(node);
+      node.querySelector('[data-edit-v2-close]').addEventListener('click', function () { node.close(); });
+      node.addEventListener('click', function (event) { if (event.target === node) node.close(); });
+      return node;
+    }
+
+    function storageRow(storage) {
+      storage = storage || {};
+      return '<div class="bratonien-storage-row" data-storage-row>'
+        + '<label>Storage-ID<input name="nc_storage_id[]" value="'+escapeHtml(storage.storage_id || '')+'" required></label>'
+        + '<label>Quellordner<input name="nc_source_prefix[]" value="'+escapeHtml(storage.source_prefix || '')+'" placeholder="optional"></label>'
+        + '<label>Lokaler Speicherpfad<input name="nc_local_mount[]" value="'+escapeHtml(storage.local_mount || '')+'" required></label>'
+        + '<button type="button" class="buttonLike" data-remove-storage>Entfernen</button></div>';
+    }
+
+    function clearValidation(form) {
+      [].slice.call(form.querySelectorAll('[aria-invalid="true"]')).forEach(function (field) {
+        field.removeAttribute('aria-invalid');
+        field.style.borderColor = '';
+        field.style.boxShadow = '';
+      });
+      [].slice.call(form.querySelectorAll('[data-edit-v2-field-error]')).forEach(function (node) { node.remove(); });
+      var box = form.querySelector('[data-edit-v2-error-summary]');
+      if (box) box.remove();
+    }
+
+    function fieldNodes(form, fieldName) {
+      return [].slice.call(form.querySelectorAll('[name="'+fieldName.replace(/"/g, '\\"')+'"]'));
+    }
+
+    function showValidation(form, data) {
+      clearValidation(form);
+      var message = (data && data.message) ? data.message : 'Die Verbindung konnte nicht gespeichert werden.';
+      var summary = document.createElement('div');
+      summary.dataset.editV2ErrorSummary = '1';
+      summary.className = 'bratonien-main-cache__warning';
+      summary.style.margin = '0 0 1rem';
+      summary.style.padding = '.75rem';
+      summary.style.border = '1px solid currentColor';
+      summary.innerHTML = '<strong>Speichern fehlgeschlagen:</strong> '+escapeHtml(message);
+      form.insertBefore(summary, form.firstChild);
+
+      var first = null;
+      var fields = data && Array.isArray(data.fields) ? data.fields : [];
+      fields.forEach(function (fieldName) {
+        fieldNodes(form, fieldName).forEach(function (field) {
+          field.setAttribute('aria-invalid', 'true');
+          field.style.borderColor = '#d65a5a';
+          field.style.boxShadow = '0 0 0 1px #d65a5a';
+          if (!first) first = field;
+          var note = document.createElement('span');
+          note.dataset.editV2FieldError = '1';
+          note.className = 'bratonien-main-cache__warning';
+          note.style.display = 'block';
+          note.style.marginTop = '.25rem';
+          note.textContent = message;
+          field.insertAdjacentElement('afterend', note);
+        });
+      });
+
+      if (first) {
+        first.scrollIntoView({block:'center', behavior:'smooth'});
+        window.setTimeout(function () { first.focus(); }, 150);
+      } else {
+        summary.scrollIntoView({block:'center', behavior:'smooth'});
+      }
+    }
+
+    function submitEditor(form, editDialog) {
+      clearValidation(form);
+      if (!form.reportValidity()) return;
+
+      var submit = form.querySelector('button[type="submit"]');
+      if (submit) submit.disabled = true;
+
+      var body = new FormData(form);
+      fetch('plugins/bratonien_tools/nc-connector-edit-save.php', {
+        method:'POST',
+        credentials:'same-origin',
+        cache:'no-store',
+        headers:{'Accept':'application/json'},
+        body:body
+      }).then(function (response) {
+        return response.json().then(function (data) {
+          if (!response.ok || !data.ok) {
+            showValidation(form, data);
+            return;
+          }
+          editDialog.close();
+          window.location.reload();
+        });
+      }).catch(function (error) {
+        showValidation(form, {message:error.message || String(error), fields:[]});
+      }).finally(function () {
+        if (submit) submit.disabled = false;
+      });
+    }
+
+    function openEditor(id) {
+      var editDialog = dialog();
+      var content = editDialog.querySelector('[data-edit-v2-content]');
+      content.innerHTML = '<p class="bratonien-base-note">Verbindung wird geladen …</p>';
+      if (typeof editDialog.showModal === 'function') editDialog.showModal();
+      else editDialog.setAttribute('open', 'open');
+
+      loadConnection(id).then(function (data) {
+        if (data.adapter !== 'local') throw new Error('Diese Ansicht ist nur für die bestehende Legacy-Verbindung vorgesehen.');
+        var legacy = data.legacy || {};
+        var webdav = data.webdav || {};
+        var storages = Array.isArray(legacy.storages) ? legacy.storages : [];
+        var rows = storages.map(storageRow).join('') || storageRow({});
+        var migrationText = webdav.migration_ready
+          ? '<strong>Bereit.</strong> Nextcloud-Zugang und verbindungseigener Piwigo-API-Key sind vollständig gespeichert.'
+          : '<strong>Noch nicht bereit.</strong> Es fehlen: '+escapeHtml((webdav.migration_missing || []).join(', ') || 'WebDAV-Zugangsdaten')+'.';
+
+        content.innerHTML = '<form method="post" data-edit-v2-form>'
+          + '<input type="hidden" name="pwg_token" value="'+escapeHtml(pwgToken)+'">'
+          + '<input type="hidden" name="connection_id" value="'+escapeHtml(data.id)+'">'
+          + '<h5>Verbindung</h5><div class="bratonien-form-grid">'
+          + '<label class="bratonien-label">Name</label><input name="connection_name" value="'+escapeHtml(data.name)+'" required>'
+          + '</div>'
+          + '<h5 style="margin-top:1.2rem">Nextcloud / WebDAV</h5>'
+          + '<p class="bratonien-base-note">Diese Angaben werden für den neuen WebDAV-Weg benötigt und gehören zu genau dieser Verbindung.</p>'
+          + '<div class="bratonien-form-grid">'
+          + '<label class="bratonien-label">Nextcloud-Adresse</label><input name="nc_nextcloud_url" value="'+escapeHtml(webdav.nextcloud_url || '')+'" placeholder="https://cloud.example.de">'
+          + '<label class="bratonien-label">Nextcloud-Benutzer</label><input name="nc_nextcloud_user" value="'+escapeHtml(webdav.nextcloud_user || '')+'" autocomplete="username">'
+          + '<label class="bratonien-label">Nextcloud-Passwort</label><input name="nc_nextcloud_password" type="password" autocomplete="current-password" placeholder="'+(webdav.has_nextcloud_password ? 'gespeichert – leer = unverändert' : 'noch nicht gespeichert')+'">'
+          + '</div>'
+          + '<h5 style="margin-top:1.2rem">Piwigo API dieser Verbindung</h5>'
+          + '<p class="bratonien-base-note">Der API-Key wird verbindungseigen gespeichert und beim Speichern geprüft.</p>'
+          + '<div class="bratonien-form-grid">'
+          + '<label class="bratonien-label">API-Schlüssel-ID</label><input name="nc_connection_api_key_id" value="'+escapeHtml(webdav.api_key_id || '')+'" autocomplete="off">'
+          + '<label class="bratonien-label">API-Geheimnis</label><input name="nc_connection_api_key_secret" type="password" autocomplete="new-password" placeholder="'+(webdav.has_api_key_secret ? 'gespeichert – leer = unverändert' : 'noch nicht gespeichert')+'">'
+          + '</div>'
+          + '<p class="bratonien-base-note"><strong>WebDAV-Migration:</strong> '+migrationText+'</p>'
+          + '<h5 style="margin-top:1.2rem">Bestehender Legacy-Weg</h5><div class="bratonien-form-grid">'
+          + '<label class="bratonien-label">Datenbank-Server</label><input name="nc_host" value="'+escapeHtml(legacy.host)+'" required>'
+          + '<label class="bratonien-label">Port</label><input name="nc_port" type="number" min="1" max="65535" value="'+escapeHtml(legacy.port || 5432)+'" required>'
+          + '<label class="bratonien-label">Datenbank</label><input name="nc_database" value="'+escapeHtml(legacy.database)+'" required>'
+          + '<label class="bratonien-label">Reader-Benutzer</label><input name="nc_user" value="'+escapeHtml(legacy.user)+'" required>'
+          + '<label class="bratonien-label">Reader-Passwort</label><input name="nc_db_password" type="password" autocomplete="new-password" placeholder="'+(legacy.has_db_password ? 'gespeichert – leer = unverändert' : 'noch nicht gespeichert')+'">'
+          + '</div>'
+          + '<h5 style="margin-top:1.2rem">Speicherorte</h5><div data-storage-list>'+rows+'</div>'
+          + '<button type="button" class="buttonLike" data-add-storage>Speicherort hinzufügen</button>'
+          + '<details style="margin-top:1rem"><summary>Erweiterte Legacy-Einstellungen</summary><div class="bratonien-form-grid" style="margin-top:.75rem">'
+          + '<label class="bratonien-label">Source-View</label><input name="nc_source_view" value="'+escapeHtml(legacy.source_view)+'" required>'
+          + '<label class="bratonien-label">Activity-View</label><input name="nc_activity_view" value="'+escapeHtml(legacy.activity_view)+'" required>'
+          + '<label class="bratonien-label">Piwigo-Galerieordner</label><input name="nc_gallery_root" value="'+escapeHtml(legacy.gallery_root)+'" required>'
+          + '<label class="bratonien-label">Ruhezeit (Sek.)</label><input name="nc_quiet_seconds" type="number" min="0" value="'+escapeHtml(legacy.quiet_seconds)+'">'
+          + '<label class="bratonien-label">Maximale Wartezeit (Sek.)</label><input name="nc_max_wait_seconds" type="number" min="60" value="'+escapeHtml(legacy.max_wait_seconds)+'">'
+          + '<label class="bratonien-label">Vollprüfung nach (Sek.)</label><input name="nc_full_sync_seconds" type="number" min="300" value="'+escapeHtml(legacy.full_sync_seconds)+'">'
+          + '</div></details>'
+          + '<div class="bratonien-actions" style="margin-top:1rem"><button class="buttonLike" type="submit">Änderungen prüfen und speichern</button><button class="buttonLike" type="button" data-edit-v2-cancel>Abbrechen</button></div>'
+          + '</form>';
+
+        var form = content.querySelector('[data-edit-v2-form]');
+        form.querySelector('[data-edit-v2-cancel]').addEventListener('click', function () { editDialog.close(); });
+        form.querySelector('[data-add-storage]').addEventListener('click', function () {
+          form.querySelector('[data-storage-list]').insertAdjacentHTML('beforeend', storageRow({}));
+        });
+        form.addEventListener('click', function (event) {
+          var remove = event.target.closest('[data-remove-storage]');
+          if (!remove) return;
+          var row = remove.closest('[data-storage-row]');
+          if (row) row.remove();
+        });
+        form.addEventListener('submit', function (event) {
+          event.preventDefault();
+          event.stopPropagation();
+          submitEditor(form, editDialog);
+        });
+      }).catch(function (error) {
+        content.innerHTML = '<p class="bratonien-main-cache__warning"><strong>Bearbeiten nicht möglich:</strong> '+escapeHtml(error.message || String(error))+'</p>';
+      });
+    }
+
+    function rebuildLocalActions(deleteForm, id, connectionData) {
+      var actions = deleteForm.parentElement;
+      if (!actions) return;
+
+      [].slice.call(actions.querySelectorAll('form')).forEach(function (form) {
+        var migrate = form.querySelector('button[value="nc_connector_migrate_start"]');
+        var editStart = form.querySelector('button[value="nc_connector_edit_start"]');
+        if (migrate || editStart) form.remove();
+      });
+      [].slice.call(actions.children).forEach(function (child) {
+        if (child.tagName === 'BUTTON' && (child.textContent || '').trim() === 'Bearbeiten') child.remove();
+        if (child.dataset && child.dataset.ncMigrationInfo) child.remove();
+      });
+
+      var edit = document.createElement('button');
+      edit.type = 'button';
+      edit.className = 'buttonLike';
+      edit.textContent = 'Bearbeiten';
+      edit.addEventListener('click', function () { openEditor(id); });
+      actions.insertBefore(edit, deleteForm);
+
+      var info = document.createElement('span');
+      info.dataset.ncMigrationInfo = '1';
+      info.className = 'bratonien-base-note';
+      info.textContent = 'WebDAV-Migration wird geprüft …';
+      actions.insertBefore(info, deleteForm);
+
+      var dataPromise = connectionData ? Promise.resolve(connectionData) : loadConnection(id);
+      dataPromise.then(function (data) {
+        var webdav = data.webdav || {};
+        if (webdav.migration_ready) {
+          info.remove();
+          actions.insertBefore(postForm('Auf WebDAV migrieren', 'nc_connector_migrate_start', id, 'migrate'), deleteForm);
+        } else {
+          var missing = (webdav.migration_missing || []).join(', ');
+          info.textContent = 'WebDAV-Migration noch nicht bereit: '+(missing || 'Zugangsdaten fehlen')+'. Zuerst „Bearbeiten“.';
+        }
+      }).catch(function (error) {
+        info.textContent = 'WebDAV-Migration kann nicht geprüft werden: '+(error.message || String(error));
+      });
+    }
+
+    function rebuildRemoteActions(deleteForm, id) {
+      var actions = deleteForm.parentElement;
+      if (!actions) return;
+      [].slice.call(actions.querySelectorAll('form')).forEach(function (form) {
+        var oldEdit = form.querySelector('button[value="nc_connector_edit_start"]');
+        var oldMigrate = form.querySelector('button[value="nc_connector_migrate_start"]');
+        if (oldEdit || oldMigrate) form.remove();
+      });
+      [].slice.call(actions.children).forEach(function (child) {
+        if (child.tagName === 'BUTTON' && (child.textContent || '').trim() === 'Bearbeiten') child.remove();
+        if (child.dataset && child.dataset.ncMigrationInfo) child.remove();
+      });
+      actions.insertBefore(postForm('Bearbeiten', 'nc_connector_edit_start', id, 'edit'), deleteForm);
+    }
+
+    [].slice.call(section.querySelectorAll('button[value="nc_connector_edit_start"]')).forEach(function (button) {
+      var form = button.closest('form');
+      if (form) form.remove();
+    });
+
+    [].slice.call(section.querySelectorAll('button[value="nc_connector_delete"]')).forEach(function (deleteButton) {
+      var deleteForm = deleteButton.closest('form');
+      if (!deleteForm) return;
+      var idInput = deleteForm.querySelector('input[name="connection_id"]');
+      if (!idInput) return;
+      var id = idInput.value;
+
+      loadConnection(id).then(function (data) {
+        if (data.adapter === 'local') rebuildLocalActions(deleteForm, id, data);
+        else rebuildRemoteActions(deleteForm, id);
+      }).catch(function (error) {
+        var actions = deleteForm.parentElement;
+        if (!actions) return;
+        var info = document.createElement('span');
+        info.className = 'bratonien-main-cache__warning';
+        info.textContent = 'Verbindungstyp konnte nicht geladen werden: '+(error.message || String(error));
+        actions.insertBefore(info, deleteForm);
+      });
+    });
+  });
+})();

js/nc_connector_source_ui.js

@@ -0,0 +1,219 @@
+(function () {
+  'use strict';
+
+  function escapeHtml(value) {
+    return String(value == null ? '' : value).replace(/[&<>"']/g, function (c) {
+      return {'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#039;'}[c];
+    });
+  }
+
+  function fieldNodes(form, fieldName) {
+    return [].slice.call(form.querySelectorAll('[name="'+fieldName.replace(/"/g, '\\"')+'"]'));
+  }
+
+  function clearPickerErrors(form) {
+    [].slice.call(form.querySelectorAll('[data-source-picker-error]')).forEach(function (node) { node.remove(); });
+    [].slice.call(form.querySelectorAll('[data-source-picker-invalid="1"]')).forEach(function (field) {
+      field.removeAttribute('data-source-picker-invalid');
+      if (field.getAttribute('aria-invalid') === 'true') field.removeAttribute('aria-invalid');
+      field.style.borderColor = '';
+      field.style.boxShadow = '';
+    });
+  }
+
+  function showPickerError(form, data) {
+    clearPickerErrors(form);
+    var message = data && data.message ? data.message : 'Die Nextcloud-Ordnerauswahl konnte nicht gestartet werden.';
+    var fields = data && Array.isArray(data.fields) ? data.fields : [];
+
+    var summary = document.createElement('div');
+    summary.dataset.sourcePickerError = '1';
+    summary.className = 'bratonien-main-cache__warning';
+    summary.style.margin = '0 0 1rem';
+    summary.style.padding = '.75rem';
+    summary.style.border = '1px solid currentColor';
+    summary.innerHTML = '<strong>Ordnerauswahl nicht möglich:</strong> '+escapeHtml(message);
+    form.insertBefore(summary, form.firstChild);
+
+    var first = null;
+    fields.forEach(function (fieldName) {
+      fieldNodes(form, fieldName).forEach(function (field) {
+        field.dataset.sourcePickerInvalid = '1';
+        field.setAttribute('aria-invalid', 'true');
+        field.style.borderColor = '#d65a5a';
+        field.style.boxShadow = '0 0 0 1px #d65a5a';
+        if (!first) first = field;
+      });
+    });
+
+    if (first) {
+      first.scrollIntoView({block:'center', behavior:'smooth'});
+      window.setTimeout(function () { first.focus(); }, 150);
+    } else {
+      summary.scrollIntoView({block:'center', behavior:'smooth'});
+    }
+  }
+
+  function jsonResponse(response) {
+    return response.json().then(function (data) {
+      if (!response.ok || !data.ok) throw data;
+      return data;
+    });
+  }
+
+  function startSourcePicker(form, button) {
+    clearPickerErrors(form);
+    if (!form.reportValidity()) return;
+
+    button.disabled = true;
+    var originalText = button.textContent;
+    button.textContent = 'Verbindung prüfen …';
+
+    var saveBody = new FormData(form);
+    fetch('plugins/bratonien_tools/nc-connector-edit-save.php', {
+      method:'POST',
+      credentials:'same-origin',
+      cache:'no-store',
+      headers:{'Accept':'application/json'},
+      body:saveBody
+    })
+      .then(jsonResponse)
+      .then(function () {
+        button.textContent = 'Nextcloud-Ordner laden …';
+        var pickerBody = new FormData();
+        var token = form.querySelector('input[name="pwg_token"]');
+        var id = form.querySelector('input[name="connection_id"]');
+        pickerBody.append('pwg_token', token ? token.value : '');
+        pickerBody.append('connection_id', id ? id.value : '');
+        return fetch('plugins/bratonien_tools/nc-connector-source-picker-start.php', {
+          method:'POST',
+          credentials:'same-origin',
+          cache:'no-store',
+          headers:{'Accept':'application/json'},
+          body:pickerBody
+        }).then(jsonResponse);
+      })
+      .then(function () {
+        try {
+          sessionStorage.setItem('bratonienNcWizardMode', 'migrate');
+          sessionStorage.setItem('bratonienNcWizardOpen', '1');
+        } catch (e) {}
+        window.location.reload();
+      })
+      .catch(function (error) {
+        showPickerError(form, error && typeof error === 'object' ? error : {message:String(error), fields:[]});
+        button.disabled = false;
+        button.textContent = originalText;
+      });
+  }
+
+  function enhanceMigrationButtons(root) {
+    var label = 'Nextcloud-Ordner auswählen & migrieren';
+    var title = 'Die WebDAV-Quelle wird im Nextcloud-Ordnerbrowser ausgewählt. Der bestehende SMB-/Legacy-Speicher wird nicht als WebDAV-Quelle übernommen.';
+    [].slice.call(root.querySelectorAll('button[value="nc_connector_migrate_start"]')).forEach(function (button) {
+      if (button.textContent !== label) button.textContent = label;
+      if (button.title !== title) button.title = title;
+    });
+  }
+
+  function enhanceEditor(root) {
+    var form = root.querySelector('[data-edit-v2-form]');
+    if (!form || form.dataset.sourceUiEnhanced === '1') return;
+    form.dataset.sourceUiEnhanced = '1';
+
+    var headings = [].slice.call(form.querySelectorAll('h5'));
+    var webdavHeading = headings.find(function (node) {
+      return (node.textContent || '').trim() === 'Nextcloud / WebDAV';
+    });
+    var legacyHeading = headings.find(function (node) {
+      return (node.textContent || '').trim() === 'Bestehender Legacy-Weg';
+    });
+    var storageHeading = headings.find(function (node) {
+      return (node.textContent || '').trim() === 'Speicherorte';
+    });
+    var storageList = form.querySelector('[data-storage-list]');
+    var addStorage = form.querySelector('[data-add-storage]');
+
+    if (webdavHeading && !form.querySelector('[data-webdav-source-picker]')) {
+      var webdavGrid = webdavHeading.nextElementSibling;
+      while (webdavGrid && !webdavGrid.classList.contains('bratonien-form-grid')) webdavGrid = webdavGrid.nextElementSibling;
+      if (webdavGrid) {
+        var picker = document.createElement('div');
+        picker.dataset.webdavSourcePicker = '1';
+        picker.style.margin = '.8rem 0 1rem';
+        picker.innerHTML = '<p class="bratonien-base-note" style="margin:.25rem 0 .5rem"><strong>WebDAV-Quelle:</strong> Du musst keinen Pfad kennen. Die Ordner des oben eingetragenen Nextcloud-Benutzers werden automatisch geladen und können anschließend ausgewählt werden.</p>';
+        var button = document.createElement('button');
+        button.type = 'button';
+        button.className = 'buttonLike';
+        button.textContent = 'Nextcloud-Ordner automatisch auswählen';
+        button.addEventListener('click', function () { startSourcePicker(form, button); });
+        picker.appendChild(button);
+        webdavGrid.insertAdjacentElement('afterend', picker);
+      }
+    }
+
+    if (legacyHeading && !form.querySelector('[data-webdav-source-note]')) {
+      var note = document.createElement('p');
+      note.dataset.webdavSourceNote = '1';
+      note.className = 'bratonien-main-cache__warning';
+      note.innerHTML = '<strong>Wichtig:</strong> Der folgende SMB-/lokale Speicher gehört ausschließlich zum bisherigen Legacy-Fallback. Er wird <strong>nicht</strong> als WebDAV-Quelle übernommen.';
+      legacyHeading.insertAdjacentElement('beforebegin', note);
+    }
+
+    if (storageHeading && storageList && addStorage) {
+      storageHeading.textContent = 'Legacy-Speicher (nur Fallback)';
+
+      var details = document.createElement('details');
+      details.dataset.legacyStorageTechnical = '1';
+      details.style.marginTop = '.75rem';
+      var summary = document.createElement('summary');
+      summary.textContent = 'Technische Legacy-Speicherzuordnung bearbeiten';
+      details.appendChild(summary);
+
+      var info = document.createElement('p');
+      info.className = 'bratonien-base-note';
+      info.textContent = 'Diese Felder betreffen nur den alten Fallback-Weg. Für WebDAV werden keine SMB-Adressen oder lokalen Mount-Pfade eingegeben.';
+      details.appendChild(info);
+
+      storageHeading.insertAdjacentElement('beforebegin', details);
+      details.appendChild(storageHeading);
+      details.appendChild(storageList);
+      details.appendChild(addStorage);
+
+      addStorage.textContent = 'Legacy-Speicher manuell hinzufügen';
+      addStorage.title = 'Nur für den alten Legacy-Fallback. WebDAV-Ordner werden im Nextcloud-Ordnerbrowser ausgewählt.';
+    }
+  }
+
+  function enhance(root) {
+    if (!root || root.nodeType !== 1) return;
+    enhanceMigrationButtons(root);
+    if (root.matches && root.matches('#bratonien-nc-connection-edit-v2')) enhanceEditor(root);
+    var dialog = root.querySelector ? root.querySelector('#bratonien-nc-connection-edit-v2') : null;
+    if (dialog) enhanceEditor(dialog);
+  }
+
+  function start() {
+    var section = document.getElementById('nc-connector');
+    if (!section) return;
+
+    enhance(section);
+    enhanceMigrationButtons(document);
+
+    var observer = new MutationObserver(function (mutations) {
+      mutations.forEach(function (mutation) {
+        [].slice.call(mutation.addedNodes || []).forEach(function (node) {
+          if (node && node.nodeType === 1) enhance(node);
+        });
+      });
+      var dialog = document.getElementById('bratonien-nc-connection-edit-v2');
+      if (dialog) enhanceEditor(dialog);
+      enhanceMigrationButtons(document);
+    });
+
+    observer.observe(document.body, {childList:true, subtree:true});
+  }
+
+  if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', start);
+  else start();
+})();

main.inc.php

@@ -1,7 +1,7 @@
 <?php
 /*
 Plugin Name: Bratonien Tools
-Version: 0.9.6.1
+Version: 0.9.6.20
 Description: Erweiterbare Administrationswerkzeuge fuer die Bratonien-Piwigo-Installation.
 Plugin URI: https://github.com/Terranom674/Piwigo_Bratonien_Tools
 Author: Bratonien

nc-connector-edit-data.php

@@ -0,0 +1,100 @@
+<?php
+$piwigo_root = realpath(dirname(__DIR__, 2));
+if ($piwigo_root === false)
+{
+  http_response_code(500);
+  exit;
+}
+define('PHPWG_ROOT_PATH', rtrim($piwigo_root, DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR);
+include_once(PHPWG_ROOT_PATH.'include/common.inc.php');
+
+header('Content-Type: application/json; charset=utf-8');
+header('Cache-Control: no-store, max-age=0');
+
+if (!defined('BRATONIEN_TOOLS_PATH'))
+{
+  http_response_code(404);
+  echo json_encode(array('error'=>'Bratonien Tools ist nicht aktiv.'));
+  exit;
+}
+if (!function_exists('is_admin') || !is_admin())
+{
+  http_response_code(403);
+  echo json_encode(array('error'=>'Administratorrechte erforderlich.'));
+  exit;
+}
+
+require_once(BRATONIEN_TOOLS_PATH.'include/nc_connector.inc.php');
+require_once(BRATONIEN_TOOLS_PATH.'include/nc_connector_manage.inc.php');
+require_once(BRATONIEN_TOOLS_PATH.'include/nc_connector_connection_scope.inc.php');
+require_once(BRATONIEN_TOOLS_PATH.'include/nc_connector_edit.inc.php');
+
+$id = (int)($_GET['connection_id'] ?? 0);
+$connection = bratonien_tools_nc_connector_connection($id, true);
+if (!$connection)
+{
+  http_response_code(404);
+  echo json_encode(array('error'=>'Connector-Verbindung wurde nicht gefunden.'));
+  exit;
+}
+
+$config = isset($connection['config']) && is_array($connection['config']) ? $connection['config'] : array();
+$credentials = array();
+$migration = array('ready'=>false, 'missing'=>array());
+try
+{
+  $credentials = bratonien_tools_nc_connector_scoped_secret($connection);
+  if ((string)$connection['adapter'] === 'local')
+  {
+    $migration = bratonien_tools_nc_connector_migration_state($connection);
+  }
+}
+catch (Throwable $e)
+{
+  $credentials = array();
+  $migration = array('ready'=>false, 'missing'=>array('gespeicherte Zugangsdaten konnten nicht gelesen werden'));
+}
+
+$storages = array();
+foreach ((array)($config['storages'] ?? array()) as $storage)
+{
+  $storages[] = array(
+    'storage_id'=>(string)($storage['storage_id'] ?? ''),
+    'source_prefix'=>(string)($storage['source_prefix'] ?? ''),
+    'local_mount'=>(string)($storage['local_mount'] ?? ''),
+  );
+}
+
+$payload = array(
+  'id'=>(int)$connection['id'],
+  'name'=>(string)$connection['name'],
+  'adapter'=>(string)$connection['adapter'],
+  'enabled'=>(bool)$connection['enabled'],
+  'takeover_state'=>(string)$connection['takeover_state'],
+  'source_mode'=>(string)($config['source_mode'] ?? ''),
+  'legacy'=>array(
+    'host'=>(string)($config['host'] ?? ''),
+    'port'=>(string)($config['port'] ?? '5432'),
+    'database'=>(string)($config['database'] ?? ''),
+    'user'=>(string)($config['user'] ?? ''),
+    'has_db_password'=>trim((string)($credentials['db_password'] ?? '')) !== '',
+    'source_view'=>(string)($config['source_view'] ?? ''),
+    'activity_view'=>(string)($config['activity_view'] ?? ''),
+    'gallery_root'=>(string)($config['gallery_root'] ?? ''),
+    'quiet_seconds'=>(int)($config['quiet_seconds'] ?? 120),
+    'max_wait_seconds'=>(int)($config['max_wait_seconds'] ?? 900),
+    'full_sync_seconds'=>(int)($config['full_sync_seconds'] ?? 86400),
+    'storages'=>$storages,
+  ),
+  'webdav'=>array(
+    'nextcloud_url'=>(string)($config['nextcloud_url'] ?? ''),
+    'nextcloud_user'=>(string)($credentials['nextcloud_user'] ?? $config['nextcloud_access_user'] ?? $config['access_user'] ?? ''),
+    'has_nextcloud_password'=>(string)($credentials['nextcloud_password'] ?? '') !== '',
+    'api_key_id'=>(string)($credentials['api_key_id'] ?? ''),
+    'has_api_key_secret'=>trim((string)($credentials['api_key_secret'] ?? '')) !== '',
+    'migration_ready'=>!empty($migration['ready']),
+    'migration_missing'=>array_values((array)($migration['missing'] ?? array())),
+  ),
+);
+
+echo json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);

nc-connector-edit-save.php

@@ -0,0 +1,312 @@
+<?php
+$piwigo_root = realpath(dirname(__DIR__, 2));
+if ($piwigo_root === false)
+{
+  http_response_code(500);
+  exit;
+}
+define('PHPWG_ROOT_PATH', rtrim($piwigo_root, DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR);
+include_once(PHPWG_ROOT_PATH.'include/common.inc.php');
+
+header('Content-Type: application/json; charset=utf-8');
+header('Cache-Control: no-store, max-age=0');
+
+function bratonien_tools_nc_edit_json($status, array $payload)
+{
+  http_response_code((int)$status);
+  echo json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  exit;
+}
+
+function bratonien_tools_nc_edit_fail($message, array $fields = array(), $stage = '', $detail = '')
+{
+  $visible = trim((string)$message);
+  if ($stage !== '') $visible = 'Bereich: '.$stage.' — '.$visible;
+  if ($detail !== '') $visible .= ' Technische Ursache: '.$detail;
+
+  bratonien_tools_nc_edit_json(422, array(
+    'ok'=>false,
+    'message'=>$visible,
+    'stage'=>(string)$stage,
+    'detail'=>(string)$detail,
+    'fields'=>array_values(array_unique($fields)),
+  ));
+}
+
+function bratonien_tools_nc_edit_probe($url, $username = '', $password = '', array $headers = array())
+{
+  if (!function_exists('curl_init'))
+  {
+    return array('ok'=>false, 'http'=>0, 'errno'=>-1, 'error'=>'cURL ist in PHP nicht verfügbar.', 'body'=>'');
+  }
+
+  $ch = curl_init($url);
+  $options = array(
+    CURLOPT_RETURNTRANSFER=>true,
+    CURLOPT_FOLLOWLOCATION=>true,
+    CURLOPT_MAXREDIRS=>3,
+    CURLOPT_CONNECTTIMEOUT=>8,
+    CURLOPT_TIMEOUT=>15,
+    CURLOPT_HTTPHEADER=>array_merge(array('Accept: application/json'), $headers),
+    CURLOPT_USERAGENT=>'Bratonien-Tools-NC-Editor/'.(function_exists('bratonien_tools_current_version') ? bratonien_tools_current_version() : 'dev'),
+  );
+  if ($username !== '')
+  {
+    $options[CURLOPT_HTTPAUTH] = CURLAUTH_BASIC;
+    $options[CURLOPT_USERPWD] = $username.':'.$password;
+  }
+  curl_setopt_array($ch, $options);
+  $body = curl_exec($ch);
+  $errno = curl_errno($ch);
+  $error = curl_error($ch);
+  $http = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
+  curl_close($ch);
+
+  return array(
+    'ok'=>$body !== false && $errno === 0,
+    'http'=>$http,
+    'errno'=>$errno,
+    'error'=>$error,
+    'body'=>$body === false ? '' : (string)$body,
+  );
+}
+
+if (!defined('BRATONIEN_TOOLS_PATH'))
+{
+  bratonien_tools_nc_edit_json(404, array('ok'=>false, 'message'=>'Bratonien Tools ist nicht aktiv.', 'fields'=>array()));
+}
+if (!function_exists('is_admin') || !is_admin())
+{
+  bratonien_tools_nc_edit_json(403, array('ok'=>false, 'message'=>'Administratorrechte erforderlich.', 'fields'=>array()));
+}
+if (($_SERVER['REQUEST_METHOD'] ?? '') !== 'POST')
+{
+  bratonien_tools_nc_edit_json(405, array('ok'=>false, 'message'=>'Nur POST ist erlaubt.', 'fields'=>array()));
+}
+
+try
+{
+  check_pwg_token();
+  require_once(BRATONIEN_TOOLS_PATH.'include/tool_registry.inc.php');
+
+  $id = (int)($_POST['connection_id'] ?? 0);
+  $connection = bratonien_tools_nc_connector_connection($id, true);
+  if (!$connection)
+  {
+    bratonien_tools_nc_edit_fail('Die zu bearbeitende Verbindung wurde nicht gefunden.', array(), 'Verbindung');
+  }
+
+  $config = isset($connection['config']) && is_array($connection['config']) ? $connection['config'] : array();
+  $credentials = bratonien_tools_nc_connector_scoped_secret($connection);
+
+  $nextcloud_input = trim((string)($_POST['nc_nextcloud_url'] ?? ($config['nextcloud_url'] ?? '')));
+  $nextcloud_user = trim((string)($_POST['nc_nextcloud_user'] ?? ($credentials['nextcloud_user'] ?? '')));
+  $submitted_nc_password = (string)($_POST['nc_nextcloud_password'] ?? '');
+  $nextcloud_password = $submitted_nc_password !== '' ? $submitted_nc_password : (string)($credentials['nextcloud_password'] ?? '');
+
+  $has_any_nextcloud = $nextcloud_input !== '' || $nextcloud_user !== '' || $nextcloud_password !== '';
+  if ($has_any_nextcloud)
+  {
+    $missing = array();
+    if ($nextcloud_input === '') $missing[] = 'nc_nextcloud_url';
+    if ($nextcloud_user === '') $missing[] = 'nc_nextcloud_user';
+    if ($nextcloud_password === '') $missing[] = 'nc_nextcloud_password';
+    if ($missing)
+    {
+      bratonien_tools_nc_edit_fail(
+        'Die WebDAV-Daten sind unvollständig. Adresse, Benutzer und Passwort werden gemeinsam benötigt.',
+        $missing,
+        'Nextcloud / WebDAV'
+      );
+    }
+
+    try
+    {
+      $candidate_urls = bratonien_tools_nc_wizard_candidate_urls($nextcloud_input);
+    }
+    catch (Throwable $e)
+    {
+      bratonien_tools_nc_edit_fail($e->getMessage(), array('nc_nextcloud_url'), 'Nextcloud / WebDAV');
+    }
+
+    $nextcloud_url = '';
+    $last_probe = null;
+    $last_status_url = '';
+    foreach ($candidate_urls as $candidate_url)
+    {
+      $status_url = $candidate_url.'/status.php';
+      $probe = bratonien_tools_nc_edit_probe($status_url);
+      $last_probe = $probe;
+      $last_status_url = $status_url;
+
+      if (!$probe['ok'] || $probe['http'] < 200 || $probe['http'] >= 300)
+      {
+        continue;
+      }
+
+      $status = json_decode($probe['body'], true);
+      if (!is_array($status) || empty($status['installed']))
+      {
+        continue;
+      }
+
+      $nextcloud_url = $candidate_url;
+      break;
+    }
+
+    if ($nextcloud_url === '')
+    {
+      $attempts = array();
+      foreach ($candidate_urls as $candidate_url)
+      {
+        $attempts[] = $candidate_url.'/status.php';
+      }
+      if (is_array($last_probe) && !$last_probe['ok'])
+      {
+        $technical = $last_probe['errno'] >= 0
+          ? 'cURL '.$last_probe['errno'].($last_probe['error'] !== '' ? ': '.$last_probe['error'] : '')
+          : $last_probe['error'];
+        bratonien_tools_nc_edit_fail(
+          'Die Nextcloud-Adresse ist vom Piwigo-Server aus nicht erreichbar. Ohne angegebenes Protokoll wurden HTTPS und HTTP geprüft.',
+          array('nc_nextcloud_url'),
+          'Nextcloud / WebDAV – Erreichbarkeit',
+          $technical.' · Geprüft: '.implode(' ; ', $attempts)
+        );
+      }
+
+      bratonien_tools_nc_edit_fail(
+        'Unter der angegebenen Adresse wurde keine erreichbare installierte Nextcloud gefunden. Ohne angegebenes Protokoll wurden HTTPS und HTTP geprüft.',
+        array('nc_nextcloud_url'),
+        'Nextcloud / WebDAV – Erkennung',
+        'Geprüft: '.implode(' ; ', $attempts).($last_probe ? ' · Letzter HTTP-Status: '.$last_probe['http'] : '')
+      );
+    }
+
+    $_POST['nc_nextcloud_url'] = $nextcloud_url;
+
+    $user_url = $nextcloud_url.'/ocs/v2.php/cloud/user?format=json';
+    $user_probe = bratonien_tools_nc_edit_probe($user_url, $nextcloud_user, $nextcloud_password, array('OCS-APIRequest: true'));
+    if (!$user_probe['ok'])
+    {
+      $technical = $user_probe['errno'] >= 0
+        ? 'cURL '.$user_probe['errno'].($user_probe['error'] !== '' ? ': '.$user_probe['error'] : '')
+        : $user_probe['error'];
+      bratonien_tools_nc_edit_fail(
+        'Die Nextcloud-Anmeldung konnte technisch nicht geprüft werden.',
+        array('nc_nextcloud_url','nc_nextcloud_user','nc_nextcloud_password'),
+        'Nextcloud / WebDAV – Anmeldung',
+        $technical.' · Ziel: '.$user_url
+      );
+    }
+    if ($user_probe['http'] === 401 || $user_probe['http'] === 403)
+    {
+      bratonien_tools_nc_edit_fail(
+        'Nextcloud hat Benutzername oder Passwort abgelehnt.',
+        array('nc_nextcloud_user','nc_nextcloud_password'),
+        'Nextcloud / WebDAV – Anmeldung',
+        'HTTP '.$user_probe['http']
+      );
+    }
+    if ($user_probe['http'] < 200 || $user_probe['http'] >= 300)
+    {
+      bratonien_tools_nc_edit_fail(
+        'Nextcloud ist erreichbar, aber die Benutzerprüfung wurde vom Server abgelehnt.',
+        array('nc_nextcloud_user','nc_nextcloud_password'),
+        'Nextcloud / WebDAV – Anmeldung',
+        'HTTP '.$user_probe['http'].' · Ziel: '.$user_url
+      );
+    }
+    try
+    {
+      bratonien_tools_nc_wizard_ocs_data($user_probe['body']);
+    }
+    catch (Throwable $e)
+    {
+      bratonien_tools_nc_edit_fail(
+        'Nextcloud antwortet auf die Benutzerprüfung, die Antwort ist aber nicht gültig: '.$e->getMessage(),
+        array('nc_nextcloud_user','nc_nextcloud_password'),
+        'Nextcloud / WebDAV – Anmeldung'
+      );
+    }
+  }
+
+  $api_key_id = trim((string)($_POST['nc_connection_api_key_id'] ?? ($credentials['api_key_id'] ?? '')));
+  $submitted_api_secret = trim((string)($_POST['nc_connection_api_key_secret'] ?? ''));
+  $api_key_secret = $submitted_api_secret !== '' ? $submitted_api_secret : trim((string)($credentials['api_key_secret'] ?? ''));
+  if (($api_key_id === '') !== ($api_key_secret === ''))
+  {
+    $missing = $api_key_id === '' ? array('nc_connection_api_key_id') : array('nc_connection_api_key_secret');
+    bratonien_tools_nc_edit_fail(
+      'API-Schlüssel-ID und API-Geheimnis müssen gemeinsam vollständig sein.',
+      $missing,
+      'Piwigo API'
+    );
+  }
+  if ($api_key_id !== '')
+  {
+    try
+    {
+      bratonien_tools_nc_connector_validate_scoped_api($api_key_id, $api_key_secret);
+    }
+    catch (Throwable $e)
+    {
+      bratonien_tools_nc_edit_fail(
+        'Der Piwigo-API-Zugang konnte nicht bestätigt werden: '.$e->getMessage(),
+        array('nc_connection_api_key_id','nc_connection_api_key_secret'),
+        'Piwigo API'
+      );
+    }
+  }
+
+  $result = bratonien_tools_nc_connector_update_local_friendly();
+  bratonien_tools_nc_edit_json(200, array(
+    'ok'=>true,
+    'message'=>(string)($result['message'] ?? 'Verbindung wurde gespeichert.'),
+    'fields'=>array(),
+  ));
+}
+catch (Throwable $e)
+{
+  $message = trim($e->getMessage());
+  if ($message === '') $message = 'Die Verbindung konnte nicht gespeichert werden.';
+
+  $fields = array();
+  $stage = 'Verbindung';
+  $add = function($name) use (&$fields)
+  {
+    if (!in_array($name, $fields, true)) $fields[] = $name;
+  };
+
+  if (stripos($message, 'Name') !== false && stripos($message, 'Datenbankname') === false) $add('connection_name');
+  if (stripos($message, 'Datenbank-Server') !== false) { $add('nc_host'); $stage = 'Legacy-Datenbank'; }
+  if (stripos($message, 'Datenbank-Port') !== false) { $add('nc_port'); $stage = 'Legacy-Datenbank'; }
+  if (stripos($message, 'Datenbankname') !== false) { $add('nc_database'); $stage = 'Legacy-Datenbank'; }
+  if (stripos($message, 'Reader-Benutzer') !== false) { $add('nc_user'); $stage = 'Legacy-Datenbank'; }
+  if (stripos($message, 'Datenbankpasswort') !== false) { $add('nc_db_password'); $stage = 'Legacy-Datenbank'; }
+  if (stripos($message, 'Storage-ID') !== false) { $add('nc_storage_id[]'); $stage = 'Speicherorte'; }
+  if (stripos($message, 'lokaler Pfad') !== false || stripos($message, 'Speicherort') !== false) { $add('nc_local_mount[]'); $stage = 'Speicherorte'; }
+  if (stripos($message, 'Galerieordner') !== false) { $add('nc_gallery_root'); $stage = 'Erweiterte Legacy-Einstellungen'; }
+  if (stripos($message, 'Datenbankansichten') !== false || stripos($message, 'Source-View') !== false) { $add('nc_source_view'); $stage = 'Erweiterte Legacy-Einstellungen'; }
+  if (stripos($message, 'Datenbankansichten') !== false || stripos($message, 'Activity-View') !== false) { $add('nc_activity_view'); $stage = 'Erweiterte Legacy-Einstellungen'; }
+
+  if (stripos($message, 'Nextcloud') !== false)
+  {
+    $stage = 'Nextcloud / WebDAV';
+    if (stripos($message, 'Adresse') !== false) $add('nc_nextcloud_url');
+    if (stripos($message, 'Benutzer') !== false) $add('nc_nextcloud_user');
+    if (stripos($message, 'Passwort') !== false) $add('nc_nextcloud_password');
+  }
+  if (stripos($message, 'API') !== false)
+  {
+    $stage = 'Piwigo API';
+    $add('nc_connection_api_key_id');
+    $add('nc_connection_api_key_secret');
+  }
+
+  bratonien_tools_nc_edit_fail(
+    $message,
+    $fields,
+    $stage,
+    'Interne Prüfung: '.get_class($e)
+  );
+}

nc-connector-source-picker-start.php

@@ -0,0 +1,104 @@
+<?php
+$piwigo_root = realpath(dirname(__DIR__, 2));
+if ($piwigo_root === false)
+{
+  http_response_code(500);
+  exit;
+}
+define('PHPWG_ROOT_PATH', rtrim($piwigo_root, DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR);
+include_once(PHPWG_ROOT_PATH.'include/common.inc.php');
+
+header('Content-Type: application/json; charset=utf-8');
+header('Cache-Control: no-store, max-age=0');
+
+function bratonien_tools_nc_source_picker_json($status, array $payload)
+{
+  http_response_code((int)$status);
+  echo json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  exit;
+}
+
+function bratonien_tools_nc_source_picker_fail($message, array $fields = array())
+{
+  bratonien_tools_nc_source_picker_json(422, array(
+    'ok'=>false,
+    'message'=>(string)$message,
+    'fields'=>array_values(array_unique($fields)),
+  ));
+}
+
+if (!defined('BRATONIEN_TOOLS_PATH'))
+{
+  bratonien_tools_nc_source_picker_json(404, array('ok'=>false, 'message'=>'Bratonien Tools ist nicht aktiv.', 'fields'=>array()));
+}
+if (!function_exists('is_admin') || !is_admin())
+{
+  bratonien_tools_nc_source_picker_json(403, array('ok'=>false, 'message'=>'Administratorrechte erforderlich.', 'fields'=>array()));
+}
+if (($_SERVER['REQUEST_METHOD'] ?? '') !== 'POST')
+{
+  bratonien_tools_nc_source_picker_json(405, array('ok'=>false, 'message'=>'Nur POST ist erlaubt.', 'fields'=>array()));
+}
+
+try
+{
+  check_pwg_token();
+  require_once(BRATONIEN_TOOLS_PATH.'include/tool_registry.inc.php');
+
+  $id = (int)($_POST['connection_id'] ?? 0);
+  $connection = bratonien_tools_nc_connector_connection($id, true);
+  if (!$connection)
+  {
+    bratonien_tools_nc_source_picker_fail('Die zu bearbeitende Verbindung wurde nicht gefunden.');
+  }
+  if ((string)$connection['adapter'] !== 'local')
+  {
+    bratonien_tools_nc_source_picker_fail('Die automatische Migrationsauswahl ist nur für die bestehende Legacy-Verbindung vorgesehen.');
+  }
+
+  $config = isset($connection['config']) && is_array($connection['config']) ? $connection['config'] : array();
+  $credentials = bratonien_tools_nc_connector_scoped_secret($connection);
+
+  $base_url = trim((string)($config['nextcloud_url'] ?? ''));
+  $username = trim((string)($credentials['nextcloud_user'] ?? ''));
+  $password = (string)($credentials['nextcloud_password'] ?? '');
+
+  $missing = array();
+  if ($base_url === '') $missing[] = 'nc_nextcloud_url';
+  if ($username === '') $missing[] = 'nc_nextcloud_user';
+  if ($password === '') $missing[] = 'nc_nextcloud_password';
+  if ($missing)
+  {
+    bratonien_tools_nc_source_picker_fail(
+      'Für die automatische Ordnerauswahl müssen Nextcloud-Adresse, Benutzer und Passwort gespeichert sein.',
+      $missing
+    );
+  }
+
+  bratonien_tools_nc_connector_prepare_webdav_wizard_from_connection($connection, 'migrate');
+
+  $state = bratonien_tools_nc_wizard_state();
+  if ((int)($state['step'] ?? 0) !== 2 || empty($state['scan_ok']) || empty($state['directory_selection_ready']))
+  {
+    $detail = trim((string)($state['technical_error'] ?? ''));
+    bratonien_tools_nc_source_picker_fail(
+      $detail !== '' ? 'Die Nextcloud-Ordner konnten nicht geladen werden: '.$detail : 'Die Nextcloud-Ordner konnten nicht geladen werden.',
+      array('nc_nextcloud_url','nc_nextcloud_user','nc_nextcloud_password')
+    );
+  }
+
+  bratonien_tools_nc_source_picker_json(200, array(
+    'ok'=>true,
+    'message'=>'Nextcloud-Ordner wurden geladen. Die Auswahl wird geöffnet.',
+    'fields'=>array(),
+  ));
+}
+catch (Throwable $e)
+{
+  $message = trim($e->getMessage());
+  if ($message === '') $message = 'Die Nextcloud-Ordnerauswahl konnte nicht vorbereitet werden.';
+  bratonien_tools_nc_source_picker_fail(
+    $message,
+    array('nc_nextcloud_url','nc_nextcloud_user','nc_nextcloud_password')
+  );
+}

nc-connector-status.php

@@ -36,6 +36,11 @@ $latest = array(
   'api'=>array('state'=>'not_run','message'=>''),
   'fallback'=>array('state'=>'not_run','message'=>''),
   'error_detail'=>'',
+  'route'=>'',
+  'route_label'=>'Noch kein Datenweg erfasst',
+  'route_timestamp'=>0,
+  'route_time_label'=>'Nicht verfügbar',
+  'route_detail'=>'',
 );
 
 if (is_dir($dir))
@@ -57,6 +62,54 @@ if (is_dir($dir))
       $latest['connection_file'] = basename($file);
     }
   }
+
+  $route_file = $dir.'/route-status.json';
+  if (is_readable($route_file))
+  {
+    $route = json_decode((string)@file_get_contents($route_file), true);
+    if (is_array($route))
+    {
+      $route_name = (string)($route['route'] ?? '');
+      $route_timestamp = (int)($route['timestamp'] ?? 0);
+      $route_label = (string)($route['label'] ?? '');
+
+      if ($route_name === 'webdav')
+      {
+        $route_label = 'WEBDAV PRIMÄR';
+      }
+      elseif ($route_name === 'legacy_fallback')
+      {
+        $route_label = 'LEGACY-FALLBACK AKTIV';
+      }
+      elseif ($route_name === 'failed')
+      {
+        $route_label = 'FEHLER - KEIN ERFOLGREICHER DATENWEG';
+      }
+      elseif ($route_label === '')
+      {
+        $route_label = 'UNBEKANNTER DATENWEG';
+      }
+
+      $route_detail = trim((string)($route['detail'] ?? ''));
+      $latest['route'] = $route_name;
+      $latest['route_label'] = $route_label;
+      $latest['route_timestamp'] = $route_timestamp;
+      $latest['route_time_label'] = $route_timestamp > 0 ? date('d.m.Y H:i:s', $route_timestamp) : 'Nicht verfügbar';
+      $latest['route_detail'] = $route_detail;
+
+      $base_message = trim((string)($latest['message'] ?? ''));
+      $message_parts = array($route_label);
+      if ($route_name !== 'webdav' && $route_detail !== '')
+      {
+        $message_parts[] = $route_detail;
+      }
+      if ($base_message !== '')
+      {
+        $message_parts[] = $base_message;
+      }
+      $latest['message'] = implode(' · ', $message_parts);
+    }
+  }
 }
 
 if ((int)$latest['timestamp'] > 0)

runtime/reconcile-webdav.php

@@ -134,6 +134,17 @@ try
       if ($baseUrl === '') fail_webdav_reconcile('Nextcloud-Adresse fehlt.');
       if (!$roots) fail_webdav_reconcile('Keine WebDAV-Wurzeln gespeichert.');
 
+      $migration = isset($config['migration']) && is_array($config['migration']) ? $config['migration'] : array();
+      $legacyFallbackId = 0;
+      if ((string)($migration['role'] ?? '') === 'webdav-primary-candidate')
+      {
+        $legacyFallbackId = (int)($migration['legacy_fallback_connection_id'] ?? 0);
+        if ($legacyFallbackId < 1 || $legacyFallbackId === $id)
+        {
+          fail_webdav_reconcile('Die gespeicherte Migrationszuordnung zur Legacy-Verbindung ist ungueltig.');
+        }
+      }
+
       $credentials = decrypt_webdav_credentials((string)$row['secret_blob'], $hexKey);
       $user = trim($credentials['nextcloud_user']);
       $password = $credentials['nextcloud_password'];
@@ -165,7 +176,6 @@ try
       if (!is_dir($galleryRoot) && !mkdir($galleryRoot, 0755, true)) fail_webdav_reconcile('WebDAV-Galeriebereich konnte nicht angelegt werden.');
       @chmod($galleryRoot, 0755);
 
-      // Alte technische Wrapper unter ./galleries duerfen nicht als Piwigo-Alben auftauchen.
       webdav_remove_generated_tree($legacyDefault, $legacyGalleryRoot);
 
       $sourceDir = $publicSourceRoot.'/connection-'.$id;
@@ -189,8 +199,9 @@ try
       {
         $path = trim((string)($root['webdav_path'] ?? ''), '/');
         $display = trim((string)($root['display_name'] ?? ''));
-        if ($path === '' || $display === '' || preg_match('/[\t\r\n]/', $path.$display)) fail_webdav_reconcile('Eine gespeicherte WebDAV-Wurzel ist ungueltig.');
+        $runtimePath = $path === '' ? '/' : $path;
-        $rootLines[] = $path."\t".$display;
+        if ($display === '' || preg_match('/[\t\r\n]/', $runtimePath.$display)) fail_webdav_reconcile('Eine gespeicherte WebDAV-Wurzel ist ungueltig.');
+        $rootLines[] = $runtimePath."\t".$display;
       }
       file_put_contents($rootsPath, implode("\n", $rootLines)."\n", LOCK_EX);
       @chmod($rootsPath, 0600);
@@ -198,6 +209,7 @@ try
       $lines = array(
         'PIWIGO_ROOT='.webdav_shell_value($piwigoRoot),
         'CONNECTION_ID='.$id,
+        'MIGRATION_LEGACY_CONNECTION_ID='.$legacyFallbackId,
         'SOURCE_MODE=webdav-placeholder',
         'WEBDAV_BASE_URL='.webdav_shell_value($baseUrl),
         'WEBDAV_USER='.webdav_shell_value($user),
@@ -223,13 +235,15 @@ try
         'mode'=>'parallel-webdav',
         'config'=>$configPath,
         'piwigo_sync_enabled'=>true,
+        'legacy_fallback_connection_id'=>$legacyFallbackId,
         'reconciled_at'=>date('Y-m-d H:i:s'),
       );
       $json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
-      if (is_string($json))
+      if (!is_string($json)) fail_webdav_reconcile('WebDAV-Runtime-Konfiguration konnte nicht serialisiert werden.');
+      $escaped = $db->real_escape_string($json);
+      if (!$db->query("UPDATE `{$table}` SET config_json='{$escaped}' WHERE id={$id} AND adapter='remote' LIMIT 1"))
       {
-        $escaped = $db->real_escape_string($json);
+        fail_webdav_reconcile('WebDAV-Runtime-Status konnte nicht gespeichert werden: '.$db->error);
-        $db->query("UPDATE `{$table}` SET config_json='{$escaped}' WHERE id={$id} LIMIT 1");
       }
     }
     catch (Throwable $e)

runtime/run-all.sh

@@ -5,20 +5,120 @@ CONFIG_DIR="/etc/bratonien-tools/nc-connector"
 SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
 shopt -s nullglob
 
+declare -A webdav_success_for_legacy=()
+declare -A webdav_failure_for_legacy=()
+declare -A legacy_seen=()
+
+read_config_value() {
+    local key="$1"
+    local file="$2"
+    local value
+    value="$(sed -n "s/^${key}=//p" "$file" | tail -n 1)"
+    value="${value%\"}"
+    value="${value#\"}"
+    value="${value%\'}"
+    value="${value#\'}"
+    printf '%s' "$value"
+}
+
+numeric_connection_id() {
+    local value="${1:-}"
+    if [[ "$value" =~ ^[0-9]+$ ]]; then
+        printf '%s' "$value"
+    else
+        printf '0'
+    fi
+}
+
+compact_text() {
+    printf '%s\n' "$1" | tail -n 20 | tr '\n' ' ' | sed 's/[[:space:]]\+/ /g; s/^[[:space:]]//; s/[[:space:]]$//'
+}
+
+read_webdav_failure_detail() {
+    local config="$1"
+    local captured_output="${2:-}"
+    local connection_id piwigo_root status_file status_detail
+
+    connection_id="$(read_config_value CONNECTION_ID "$config")"
+    piwigo_root="$(read_config_value PIWIGO_ROOT "$config")"
+    [[ -n "$piwigo_root" ]] || piwigo_root="/var/www/piwigo"
+
+    status_detail=""
+    if [[ -n "$connection_id" ]]; then
+        status_file="${piwigo_root%/}/_data/bratonien-tools/nc-connector-status/connection-${connection_id}.json"
+        if [[ -r "$status_file" ]]; then
+            status_detail="$(php -r '
+              $file = $argv[1];
+              $data = json_decode((string)@file_get_contents($file), true);
+              if (!is_array($data)) exit(0);
+              $message = trim((string)($data["message"] ?? ""));
+              $detail = trim((string)($data["error_detail"] ?? ""));
+              $parts = array();
+              if ($message !== "") $parts[] = $message;
+              if ($detail !== "") $parts[] = $detail;
+              if ($parts) {
+                $text = preg_replace("/\\s+/u", " ", implode(" - ", $parts));
+                echo trim((string)$text);
+              }
+            ' "$status_file")"
+        fi
+    fi
+
+    if [[ -n "$captured_output" ]]; then
+        captured_output="$(compact_text "$captured_output")"
+    fi
+
+    if [[ -n "$status_detail" && -n "$captured_output" ]]; then
+        printf '%s' "$status_detail | Prozessausgabe: $captured_output"
+    elif [[ -n "$status_detail" ]]; then
+        printf '%s' "$status_detail"
+    elif [[ -n "$captured_output" ]]; then
+        printf '%s' "$captured_output"
+    elif [[ -z "$connection_id" ]]; then
+        printf '%s' 'WebDAV-Prozess wurde gestartet, aber die Verbindungs-ID fehlt in der Runtime-Konfiguration.'
+    else
+        printf '%s' "WebDAV-Prozess fuer Verbindung ${connection_id} endete mit Fehler, lieferte aber weder Statusdatei noch Prozessausgabe."
+    fi
+}
+
+write_route_status() {
+    local route="$1"
+    local label="$2"
+    local detail="$3"
+    local fallback_used="$4"
+    local success="$5"
+
+    [[ -n "${ROUTE_STATUS_FILE:-}" ]] || return 0
+    mkdir -p -- "$(dirname -- "$ROUTE_STATUS_FILE")"
+
+    php -r '
+      $payload = array(
+        "timestamp" => time(),
+        "route" => (string)$argv[2],
+        "label" => (string)$argv[3],
+        "detail" => (string)$argv[4],
+        "fallback_used" => $argv[5] === "1",
+        "success" => $argv[6] === "1"
+      );
+      $json = json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT);
+      if (!is_string($json) || file_put_contents($argv[1], $json.PHP_EOL, LOCK_EX) === false) {
+        fwrite(STDERR, "Route-Status konnte nicht geschrieben werden.\n");
+        exit(1);
+      }
+      @chmod($argv[1], 0644);
+    ' "$ROUTE_STATUS_FILE" "$route" "$label" "$detail" "$fallback_used" "$success"
+}
+
 if ! php "$SCRIPT_DIR/reconcile.php"; then
     echo "NC Connector: gespeicherte lokale Verbindungen konnten nicht mit der Runtime abgeglichen werden." >&2
     exit 1
 fi
 
 if ! php "$SCRIPT_DIR/reconcile-webdav.php"; then
-    echo "NC Connector: WebDAV-Testverbindungen konnten nicht mit der parallelen Runtime abgeglichen werden." >&2
+    echo "NC Connector: WebDAV-Verbindungen konnten nicht mit der Runtime abgeglichen werden." >&2
     exit 1
 fi
 
-# Nach dem Reconcile kennt Piwigo alle noch aktiven WebDAV-Verbindungen. Jetzt
-# werden Sites, Alben, Bilddatensaetze und Derivate geloeschter Verbindungen
-# entfernt. Das erfasst auch Verbindungen, die bereits vor diesem Update
-# geloescht wurden.
 if ! php "$SCRIPT_DIR/cleanup-webdav-piwigo.php"; then
     echo "NC Connector: Piwigo-Inhalte geloeschter WebDAV-Verbindungen konnten nicht bereinigt werden." >&2
     exit 1
@@ -37,37 +137,85 @@ if [[ ${#configs[@]} -eq 0 && ${#webdav_configs[@]} -eq 0 ]]; then
     exit 0
 fi
 
-result=0
+route_piwigo_root=""
+for candidate in "${webdav_configs[@]}" "${configs[@]}"; do
+    [[ -f "$candidate" ]] || continue
+    route_piwigo_root="$(read_config_value PIWIGO_ROOT "$candidate")"
+    [[ -n "$route_piwigo_root" ]] && break
+done
+[[ -n "$route_piwigo_root" ]] || route_piwigo_root="/var/www/piwigo"
+ROUTE_STATUS_FILE="${route_piwigo_root%/}/_data/bratonien-tools/nc-connector-status/route-status.json"
+
+webdav_success_count=0
+webdav_failure_count=0
+legacy_run_count=0
+legacy_failure_count=0
+fallback_used=0
+unpaired_webdav_failure=0
+summary_parts=()
 
-# WebDAV zuerst: Der parallele Shadow Tree muss bereits vollständig stehen,
-# bevor der weiterhin produktive lokale Weg seine normale Piwigo-
-# Dateisynchronisierung ausführt. So wird der neue Baum im selben Minutenlauf
-# sichtbar, ohne dass der WebDAV-Zweig selbst eine zweite globale Piwigo-
-# Synchronisierung startet.
 for config in "${webdav_configs[@]}"; do
     name="$(basename "$config")"
-    echo "NC Connector WebDAV parallel: $name"
+    connection_id="$(numeric_connection_id "$(read_config_value CONNECTION_ID "$config")")"
-    if ! env PIWIGO_CONFIG="$config" bash "$SCRIPT_DIR/sync-webdav.sh"; then
+    legacy_id="$(numeric_connection_id "$(read_config_value MIGRATION_LEGACY_CONNECTION_ID "$config")")"
-        result=1
+
+    if [[ "$connection_id" -lt 1 ]]; then
+        echo "NC Connector: $name besitzt keine gueltige WebDAV-Verbindungs-ID." >&2
+        webdav_failure_count=$((webdav_failure_count + 1))
+        unpaired_webdav_failure=1
+        summary_parts+=("$name: ungueltige Verbindungs-ID")
+        continue
+    fi
+
+    echo "NC Connector WebDAV #$connection_id: $name"
+    webdav_output=""
+    if webdav_output="$(env PIWIGO_CONFIG="$config" bash "$SCRIPT_DIR/sync-webdav.sh" 2>&1)"; then
+        webdav_success_count=$((webdav_success_count + 1))
+        [[ -z "$webdav_output" ]] || printf '%s\n' "$webdav_output"
+        if [[ "$legacy_id" -gt 0 ]]; then
+            webdav_success_for_legacy["$legacy_id"]="$connection_id"
+            summary_parts+=("WebDAV #$connection_id erfolgreich; Legacy #$legacy_id uebersprungen")
+        else
+            summary_parts+=("WebDAV #$connection_id erfolgreich")
+        fi
+    else
+        webdav_exit=$?
+        webdav_failure_count=$((webdav_failure_count + 1))
+        [[ -z "$webdav_output" ]] || printf '%s\n' "$webdav_output" >&2
+        webdav_failure_detail="$(read_webdav_failure_detail "$config" "$webdav_output")"
+        webdav_failure_detail="Exit-Code ${webdav_exit}: ${webdav_failure_detail}"
+        echo "NC Connector: WebDAV #$connection_id fehlgeschlagen: $webdav_failure_detail" >&2
+
+        if [[ "$legacy_id" -gt 0 ]]; then
+            webdav_failure_for_legacy["$legacy_id"]="$webdav_failure_detail"
+            echo "NC Connector: Nur Legacy-Verbindung #$legacy_id ist fuer diesen WebDAV-Lauf als Fallback vorgesehen." >&2
+        else
+            unpaired_webdav_failure=1
+            summary_parts+=("WebDAV #$connection_id fehlgeschlagen ohne Legacy-Fallback")
+        fi
     fi
 done
 
 for config in "${configs[@]}"; do
     name="$(basename "$config")"
-    connection_id=""
+    connection_id="0"
     if [[ "$name" =~ ^connection-([0-9]+)\.conf$ ]]; then
         connection_id="${BASH_REMATCH[1]}"
     fi
 
-    piwigo_root="$(sed -n 's/^PIWIGO_ROOT=//p' "$config" | tail -n 1)"
+    if [[ "$connection_id" -lt 1 ]]; then
-    piwigo_root="${piwigo_root%\"}"
+        echo "NC Connector: $name besitzt keine gueltige Legacy-Verbindungs-ID." >&2
-    piwigo_root="${piwigo_root#\"}"
+        legacy_failure_count=$((legacy_failure_count + 1))
-    piwigo_root="${piwigo_root%\'}"
+        summary_parts+=("$name: ungueltige Legacy-Verbindungs-ID")
-    piwigo_root="${piwigo_root#\'}"
+        continue
+    fi
+    legacy_seen["$connection_id"]=1
+
+    piwigo_root="$(read_config_value PIWIGO_ROOT "$config")"
     [[ -n "$piwigo_root" ]] || piwigo_root="/var/www/piwigo"
     tombstone_dir="${piwigo_root%/}/_data/bratonien-tools/nc-connector-status"
 
-    if [[ -n "$connection_id" && -f "$tombstone_dir/deleted-$connection_id" ]]; then
+    if [[ -f "$tombstone_dir/deleted-$connection_id" ]]; then
         echo "NC Connector: Verbindung $connection_id wurde geloescht; Laufzeitdateien werden entfernt."
         rm -f -- "$CONFIG_DIR/connection-$connection_id.conf" \
             "$CONFIG_DIR/connection-$connection_id.db-password" \
@@ -78,10 +226,68 @@ for config in "${configs[@]}"; do
         continue
     fi
 
-    echo "NC Connector lokal: $name"
+    if [[ -n "${webdav_success_for_legacy[$connection_id]:-}" ]]; then
-    if ! env PIWIGO_CONFIG="$config" bash "$SCRIPT_DIR/sync.sh"; then
+        echo "NC Connector: Legacy #$connection_id wird nicht ausgefuehrt, weil der zugeordnete WebDAV-Nachfolger #${webdav_success_for_legacy[$connection_id]} erfolgreich war."
-        result=1
+        continue
+    fi
+
+    legacy_run_count=$((legacy_run_count + 1))
+    if [[ -n "${webdav_failure_for_legacy[$connection_id]:-}" ]]; then
+        echo "NC Connector Legacy-Fallback #$connection_id nach WebDAV-Fehler: $name"
+        fallback_used=1
+    else
+        echo "NC Connector Legacy #$connection_id: $name"
+    fi
+
+    if env PIWIGO_CONFIG="$config" bash "$SCRIPT_DIR/sync.sh"; then
+        if [[ -n "${webdav_failure_for_legacy[$connection_id]:-}" ]]; then
+            summary_parts+=("WebDAV fuer Legacy #$connection_id fehlgeschlagen; Legacy-Fallback erfolgreich")
+        else
+            summary_parts+=("Legacy #$connection_id erfolgreich")
+        fi
+    else
+        legacy_failure_count=$((legacy_failure_count + 1))
+        summary_parts+=("Legacy #$connection_id fehlgeschlagen")
     fi
 done
 
-exit "$result"
+for legacy_id in "${!webdav_failure_for_legacy[@]}"; do
+    if [[ -z "${legacy_seen[$legacy_id]:-}" ]]; then
+        echo "NC Connector: WebDAV fuer Legacy #$legacy_id ist fehlgeschlagen, aber die zugeordnete Legacy-Runtime fehlt." >&2
+        legacy_failure_count=$((legacy_failure_count + 1))
+        summary_parts+=("Fallback #$legacy_id fehlt")
+    fi
+done
+
+summary_detail="$(IFS='; '; printf '%s' "${summary_parts[*]}")"
+[[ -n "$summary_detail" ]] || summary_detail="Keine Connector-Route wurde ausgefuehrt."
+
+if [[ "$unpaired_webdav_failure" -eq 0 && "$legacy_failure_count" -eq 0 ]]; then
+    if [[ "$fallback_used" -eq 1 ]]; then
+        route="mixed_fallback"
+        label="MIGRATION - FALLBACK AKTIV"
+    elif [[ "$webdav_success_count" -gt 0 && "$legacy_run_count" -gt 0 ]]; then
+        route="mixed"
+        label="WebDAV + Legacy"
+    elif [[ "$webdav_success_count" -gt 0 ]]; then
+        route="webdav"
+        label="WebDAV"
+    else
+        route="legacy"
+        label="Legacy"
+    fi
+
+    write_route_status "$route" "$label" "$summary_detail" "$fallback_used" "1"
+    echo "NC Connector: alle erforderlichen Verbindungen wurden erfolgreich verarbeitet."
+    exit 0
+fi
+
+write_route_status \
+    "failed" \
+    "FEHLER - mindestens eine Verbindung" \
+    "$summary_detail" \
+    "$fallback_used" \
+    "0"
+
+echo "NC Connector: mindestens eine erforderliche Verbindung ist fehlgeschlagen." >&2
+exit 1

template/admin_tabs.tpl

@@ -9,7 +9,13 @@
 .bratonien-tab-panel { width:100%; max-width:none; margin-left:0 !important; margin-right:0 !important; }
 .bratonien-tab-panel[hidden] { display:none !important; }
 .bratonien-card { margin-left:0; margin-right:0; }
-@media (max-width:760px) { .bratonien-tabs{gap:5px}.bratonien-tab{border-bottom:1px solid rgba(255,255,255,.16);border-radius:4px;margin-bottom:0;padding:9px 11px} }
+.bratonien-edit-dialog { width:min(920px,calc(100vw - 3rem)); max-height:88vh; overflow:auto; background:#444; color:inherit; border:1px solid #777; border-radius:4px; padding:0; box-shadow:0 18px 60px rgba(0,0,0,.55); }
+.bratonien-edit-dialog::backdrop { background:rgba(0,0,0,.55); }
+.bratonien-edit-dialog__body { padding:1.25rem 1.5rem; }
+.bratonien-storage-row { display:grid; grid-template-columns:minmax(120px,.7fr) minmax(150px,1fr) minmax(240px,1.5fr) auto; gap:.5rem; align-items:end; margin:.5rem 0; }
+.bratonien-storage-row label { display:flex; flex-direction:column; gap:.25rem; }
+.bratonien-storage-row input { width:100%; box-sizing:border-box; }
+@media (max-width:760px) { .bratonien-tabs{gap:5px}.bratonien-tab{border-bottom:1px solid rgba(255,255,255,.16);border-radius:4px;margin-bottom:0;padding:9px 11px}.bratonien-storage-row{grid-template-columns:1fr} }
 </style>
 <div id="bratonien-tabs-anchor"></div>
 <script>
@@ -48,12 +54,31 @@
     var openButton=document.getElementById('bratonien-nc-wizard-open');
     var closeButton=document.getElementById('bratonien-nc-wizard-close');
     var storageKey='bratonienNcWizardOpen';
+    var modeKey='bratonienNcWizardMode';
     var resetBusy=false;
 
     function token(){var input=section.querySelector('input[name="pwg_token"]');return input?input.value:'';}
     function setOpen(value){try{if(value)sessionStorage.setItem(storageKey,'1');else sessionStorage.removeItem(storageKey);}catch(e){}}
+    function mode(){try{return sessionStorage.getItem(modeKey)||'';}catch(e){return '';}}
+    function clearMode(){try{sessionStorage.removeItem(modeKey);}catch(e){}}
+    function applyMode(){
+      if(!dialog)return;
+      var current=mode();
+      var heading=dialog.querySelector('h4');
+      var finish=dialog.querySelector('button[value="nc_connector_wizard_finish"]');
+      if(current==='edit'){
+        if(heading)heading.textContent='Verbindung bearbeiten';
+        if(finish)finish.textContent='Änderungen speichern';
+      }else if(current==='migrate'){
+        if(heading)heading.textContent='Auf WebDAV migrieren';
+        if(finish)finish.textContent='Migration starten';
+      }else{
+        if(heading)heading.textContent='Neue Verbindung';
+        if(finish)finish.textContent='Verbindung anlegen';
+      }
+    }
     function showWizard(){
-      setOpen(true);
+      setOpen(true);applyMode();
       if(!dialog)return;
       if(typeof dialog.showModal==='function'&&!dialog.open)dialog.showModal();
       else dialog.setAttribute('open','open');
@@ -65,13 +90,13 @@
       return fetch(window.location.href,{method:'POST',credentials:'same-origin',cache:'no-store',headers:{'Content-Type':'application/x-www-form-urlencoded;charset=UTF-8'},body:body.toString()});
     }
     function closeAfterReset(){
-      if(resetBusy)return;resetBusy=true;setOpen(false);
+      if(resetBusy)return;resetBusy=true;setOpen(false);clearMode();
       resetServer().catch(function(){}).finally(function(){resetBusy=false;if(dialog){if(typeof dialog.close==='function'&&dialog.open)dialog.close();else dialog.removeAttribute('open');}});
     }
 
     if(openButton){
       openButton.addEventListener('click',function(event){
-        event.preventDefault();event.stopImmediatePropagation();showWizard();
+        event.preventDefault();event.stopImmediatePropagation();clearMode();showWizard();
       },true);
     }
     if(closeButton){
@@ -80,18 +105,111 @@
     if(dialog){
       dialog.addEventListener('cancel',function(event){event.preventDefault();event.stopImmediatePropagation();closeAfterReset();},true);
       dialog.addEventListener('click',function(event){if(event.target===dialog){event.preventDefault();event.stopImmediatePropagation();closeAfterReset();}},true);
-
-      // Every wizard POST explicitly preserves the open state before the
-      // browser leaves the page. Validation errors therefore return to the
-      // same wizard step instead of closing/resetting the dialog.
       [].slice.call(dialog.querySelectorAll('form[data-bratonien-wizard-form]')).forEach(function(form){
-        form.addEventListener('submit',function(){setOpen(true);},true);
+        form.addEventListener('submit',function(event){
+          var submitter=event.submitter;
+          setOpen(true);
+          if(submitter&&submitter.hasAttribute('data-bratonien-wizard-end')){
+            setOpen(false);
+            if(submitter.value==='nc_connector_wizard_reset')clearMode();
+          }
+        },true);
       });
-
       try{if(sessionStorage.getItem(storageKey)==='1')showWizard();}catch(e){}
+      applyMode();
     }
   }
 
+  function initNCConnectionEditing(){
+    var section=document.getElementById('nc-connector');if(!section)return;
+    var modeKey='bratonienNcWizardMode';
+    var pwgTokenInput=section.querySelector('input[name="pwg_token"]');
+    var pwgToken=pwgTokenInput?pwgTokenInput.value:'';
+
+    function setMode(value){try{sessionStorage.setItem(modeKey,value);}catch(e){}}
+    function makePostButton(label,tool,id,modeValue){
+      var form=document.createElement('form');form.method='post';form.style.display='inline';
+      var token=document.createElement('input');token.type='hidden';token.name='pwg_token';token.value=pwgToken;form.appendChild(token);
+      var connection=document.createElement('input');connection.type='hidden';connection.name='connection_id';connection.value=String(id);form.appendChild(connection);
+      var button=document.createElement('button');button.type='submit';button.className='buttonLike';button.name='bratonien_tool';button.value=tool;button.textContent=label;
+      if(modeValue)form.addEventListener('submit',function(){setMode(modeValue);});
+      form.appendChild(button);return form;
+    }
+    function escapeHtml(value){return String(value==null?'':value).replace(/[&<>"']/g,function(c){return {'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#039;'}[c];});}
+    function localEditorDialog(){
+      var dialog=document.getElementById('bratonien-nc-local-edit-dialog');
+      if(dialog)return dialog;
+      dialog=document.createElement('dialog');dialog.id='bratonien-nc-local-edit-dialog';dialog.className='bratonien-edit-dialog';
+      dialog.innerHTML='<div class="bratonien-edit-dialog__body"><div style="display:flex;align-items:center;justify-content:space-between;gap:1rem"><div><h4 style="margin:0">Verbindung bearbeiten</h4><p class="bratonien-base-note" style="margin:.35rem 0 0">Bestehende Legacy-Verbindung. Änderungen werden in derselben Verbindung gespeichert.</p></div><button type="button" class="buttonLike" data-local-edit-close>Schließen</button></div><div data-local-edit-content style="margin-top:1rem"></div></div>';
+      document.body.appendChild(dialog);
+      dialog.querySelector('[data-local-edit-close]').addEventListener('click',function(){dialog.close();});
+      dialog.addEventListener('click',function(event){if(event.target===dialog)dialog.close();});
+      return dialog;
+    }
+    function storageRow(storage){
+      return '<div class="bratonien-storage-row" data-storage-row>'+
+        '<label>Storage-ID<input name="nc_storage_id[]" value="'+escapeHtml(storage.storage_id||'')+'" required></label>'+
+        '<label>Quellordner<input name="nc_source_prefix[]" value="'+escapeHtml(storage.source_prefix||'')+'" placeholder="optional"></label>'+
+        '<label>Lokaler Speicherpfad<input name="nc_local_mount[]" value="'+escapeHtml(storage.local_mount||'')+'" required></label>'+
+        '<button type="button" class="buttonLike" data-remove-storage>Entfernen</button></div>';
+    }
+    function openLocalEditor(id){
+      var dialog=localEditorDialog();
+      var content=dialog.querySelector('[data-local-edit-content]');
+      content.innerHTML='<p class="bratonien-base-note">Verbindung wird geladen …</p>';
+      if(typeof dialog.showModal==='function')dialog.showModal();else dialog.setAttribute('open','open');
+      fetch('plugins/bratonien_tools/nc-connector-edit-data.php?connection_id='+encodeURIComponent(id)+'&_='+Date.now(),{credentials:'same-origin',cache:'no-store',headers:{'Accept':'application/json'}})
+        .then(function(response){return response.json().then(function(data){if(!response.ok)throw new Error(data.error||('HTTP '+response.status));return data;});})
+        .then(function(data){
+          if(data.adapter!=='local')throw new Error('Diese Verbindung ist keine Legacy-Verbindung.');
+          var legacy=data.legacy||{};var storages=Array.isArray(legacy.storages)?legacy.storages:[];
+          var rows=storages.map(storageRow).join('');
+          if(!rows)rows=storageRow({});
+          content.innerHTML='<form method="post" data-local-edit-form>'+
+            '<input type="hidden" name="pwg_token" value="'+escapeHtml(pwgToken)+'">'+
+            '<input type="hidden" name="connection_id" value="'+escapeHtml(data.id)+'">'+
+            '<div class="bratonien-form-grid">'+
+              '<label class="bratonien-label">Name</label><input name="connection_name" value="'+escapeHtml(data.name)+'" required>'+
+              '<label class="bratonien-label">Datenbank-Server</label><input name="nc_host" value="'+escapeHtml(legacy.host)+'" required>'+
+              '<label class="bratonien-label">Port</label><input name="nc_port" type="number" min="1" max="65535" value="'+escapeHtml(legacy.port||5432)+'" required>'+
+              '<label class="bratonien-label">Datenbank</label><input name="nc_database" value="'+escapeHtml(legacy.database)+'" required>'+
+              '<label class="bratonien-label">Reader-Benutzer</label><input name="nc_user" value="'+escapeHtml(legacy.user)+'" required>'+
+              '<label class="bratonien-label">Reader-Passwort</label><input name="nc_db_password" type="password" autocomplete="new-password" placeholder="leer = unverändert">'+
+            '</div>'+
+            '<h5 style="margin-top:1rem">Speicherorte</h5><p class="bratonien-base-note">Jeder Speicherort wird einzeln bearbeitet. Es ist kein Pipe-/Textformat erforderlich.</p><div data-storage-list>'+rows+'</div><button type="button" class="buttonLike" data-add-storage>Speicherort hinzufügen</button>'+
+            '<details style="margin-top:1rem"><summary>Erweiterte Legacy-Einstellungen</summary><div class="bratonien-form-grid" style="margin-top:.75rem">'+
+              '<label class="bratonien-label">Source-View</label><input name="nc_source_view" value="'+escapeHtml(legacy.source_view)+'" required>'+
+              '<label class="bratonien-label">Activity-View</label><input name="nc_activity_view" value="'+escapeHtml(legacy.activity_view)+'" required>'+
+              '<label class="bratonien-label">Piwigo-Galerieordner</label><input name="nc_gallery_root" value="'+escapeHtml(legacy.gallery_root)+'" required>'+
+              '<label class="bratonien-label">Ruhezeit (Sek.)</label><input name="nc_quiet_seconds" type="number" min="0" value="'+escapeHtml(legacy.quiet_seconds)+'">'+
+              '<label class="bratonien-label">Maximale Wartezeit (Sek.)</label><input name="nc_max_wait_seconds" type="number" min="60" value="'+escapeHtml(legacy.max_wait_seconds)+'">'+
+              '<label class="bratonien-label">Vollprüfung nach (Sek.)</label><input name="nc_full_sync_seconds" type="number" min="300" value="'+escapeHtml(legacy.full_sync_seconds)+'">'+
+            '</div></details>'+
+            '<div class="bratonien-actions" style="margin-top:1rem"><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_update_local">Änderungen speichern</button><button class="buttonLike" type="button" data-local-edit-cancel>Abbrechen</button></div></form>';
+          var form=content.querySelector('[data-local-edit-form]');
+          form.querySelector('[data-local-edit-cancel]').addEventListener('click',function(){dialog.close();});
+          form.querySelector('[data-add-storage]').addEventListener('click',function(){form.querySelector('[data-storage-list]').insertAdjacentHTML('beforeend',storageRow({}));});
+          form.addEventListener('click',function(event){var remove=event.target.closest('[data-remove-storage]');if(remove){var row=remove.closest('[data-storage-row]');if(row)row.remove();}});
+        })
+        .catch(function(error){content.innerHTML='<p class="bratonien-main-cache__warning"><strong>Bearbeiten nicht möglich:</strong> '+escapeHtml(error.message||String(error))+'</p>';});
+    }
+
+    [].slice.call(section.querySelectorAll('button[value="nc_connector_edit_start"]')).forEach(function(button){var form=button.closest('form');if(form)form.remove();});
+
+    [].slice.call(section.querySelectorAll('button[value="nc_connector_delete"]')).forEach(function(deleteButton){
+      var deleteForm=deleteButton.closest('form');var card=deleteButton.closest('details');if(!deleteForm||!card)return;
+      var idInput=deleteForm.querySelector('input[name="connection_id"]');if(!idInput)return;var id=idInput.value;
+      var actions=deleteForm.parentElement;if(!actions)return;
+      var text=card.textContent||'';var isLocal=text.indexOf('bestehende Legacy-Konfiguration')!==-1;
+      if(isLocal){
+        var edit=document.createElement('button');edit.type='button';edit.className='buttonLike';edit.textContent='Bearbeiten';edit.addEventListener('click',function(){openLocalEditor(id);});actions.insertBefore(edit,deleteForm);
+        actions.insertBefore(makePostButton('Auf WebDAV migrieren','nc_connector_migrate_start',id,'migrate'),deleteForm);
+      }else{
+        actions.insertBefore(makePostButton('Bearbeiten','nc_connector_edit_start',id,'edit'),deleteForm);
+      }
+    });
+  }
+
   function initNCConnectorPolling(){
     var section=document.getElementById('nc-connector');if(!section)return;
     var endpoint='plugins/bratonien_tools/nc-connector-status.php';
@@ -144,7 +262,7 @@
     poll();schedule();
   }
 
-  function initAll(){initBratonienTabs();initNCWizardLifecycle();initNCConnectorPolling();}
+  function initAll(){initBratonienTabs();initNCWizardLifecycle();initNCConnectionEditing();initNCConnectorPolling();}
   if(document.readyState==='loading')document.addEventListener('DOMContentLoaded',initAll);else initAll();
 })();
 </script>