added guardian login with views for their assigned childs

lib/view/pages/settings/sections/account_section.dart

@@ -4,15 +4,19 @@ import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 
 import '../../../../api/marianumcloud/cloud_users/cloud_users_actions.dart';
-import '../../../../api/marianumconnect/queries/auth_logout/auth_logout.dart';
-import '../../../../model/account_data.dart';
 import '../../../../push/push_registration.dart';
 import '../../../../routing/app_routes.dart';
+import '../../../../session/session.dart';
+import '../../../../session/session_lifecycle.dart';
+import '../../../../session/session_manager.dart';
 import '../../../../state/app/modules/account/bloc/account_bloc.dart';
 import '../../../../state/app/modules/account/bloc/account_state.dart';
+import '../../../../state/app/modules/capabilities/bloc/capabilities_cubit.dart';
 import '../../../../widget/app_progress_indicator.dart';
 import '../../../../widget/async_action_button.dart';
 import '../../../../widget/avatar_actions_sheet.dart';
+import '../../../../widget/centered_leading.dart';
+import '../../../../widget/child_switcher.dart';
 import '../../../../widget/confirm_dialog.dart';
 import '../../../../widget/demo_restricted.dart';
 import '../../../../widget/user_avatar.dart';
@@ -21,14 +25,53 @@ import '../../../../widget/user_avatar.dart';
 // every Settings rebuild doesn't re-issue the OCS request.
 String? _cachedDisplayName;
 
-class AccountSection extends StatefulWidget {
+class AccountSection extends StatelessWidget {
   const AccountSection({super.key});
 
   @override
-  State<AccountSection> createState() => _AccountSectionState();
+  Widget build(BuildContext context) => switch (SessionManager().current) {
+    GuardianSession(:final email) => _GuardianAccount(email: email),
+    _ => const _SchoolAccount(),
+  };
 }
 
-class _AccountSectionState extends State<AccountSection> {
+/// Guardians have no Nextcloud profile: show the e-mail and linked children.
+class _GuardianAccount extends StatelessWidget {
+  final String email;
+
+  const _GuardianAccount({required this.email});
+
+  @override
+  Widget build(BuildContext context) {
+    final children = context.watch<CapabilitiesCubit>().state.children;
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.stretch,
+      children: [
+        ListTile(
+          contentPadding: const EdgeInsets.fromLTRB(16, 12, 16, 4),
+          leading: const CenteredLeading(Icon(Icons.family_restroom_outlined)),
+          title: const Text('Elternkonto'),
+          subtitle: Text(email),
+          trailing: TextButton.icon(
+            icon: const Icon(Icons.logout_outlined, size: 18),
+            label: const Text('Abmelden'),
+            onPressed: () => _confirmLogout(context),
+          ),
+        ),
+        for (final child in children) ChildTile(child: child),
+      ],
+    );
+  }
+}
+
+class _SchoolAccount extends StatefulWidget {
+  const _SchoolAccount();
+
+  @override
+  State<_SchoolAccount> createState() => _SchoolAccountState();
+}
+
+class _SchoolAccountState extends State<_SchoolAccount> {
   int _avatarVersion = 0;
   bool _avatarBusy = false;
   String? _displayName = _cachedDisplayName;
@@ -42,9 +85,7 @@ class _AccountSectionState extends State<AccountSection> {
   Future<void> _loadDisplayName() async {
     try {
       final info = await GetUserInfo().run();
-      _cachedDisplayName = info.displayName.isEmpty
-          ? null
-          : info.displayName;
+      _cachedDisplayName = info.displayName.isEmpty ? null : info.displayName;
       if (!mounted) return;
       setState(() => _displayName = _cachedDisplayName);
     } catch (_) {
@@ -84,13 +125,17 @@ class _AccountSectionState extends State<AccountSection> {
     setState(() => _avatarBusy = false);
     if (!ok) return;
 
-    invalidateAvatarCache(id: AccountData().getUsername(), isGroup: false);
+    invalidateAvatarCache(
+      id: SessionManager().requireNextcloud().username,
+      isGroup: false,
+    );
     setState(() => _avatarVersion++);
   }
 
   @override
   Widget build(BuildContext context) {
-    final username = AccountData().getUsername();
+    final nextcloud = SessionManager().requireNextcloud();
+    final username = nextcloud.username;
     final displayName = _displayName;
     final theme = Theme.of(context);
 
@@ -109,8 +154,10 @@ class _AccountSectionState extends State<AccountSection> {
                   children: [
                     Center(
                       child: GestureDetector(
-                        onTap: () =>
-                            AppRoutes.openLargeProfilePicture(context, username),
+                        onTap: () => AppRoutes.openLargeProfilePicture(
+                          context,
+                          username,
+                        ),
                         child: UserAvatar(
                           key: ValueKey(_avatarVersion),
                           id: username,
@@ -164,7 +211,7 @@ class _AccountSectionState extends State<AccountSection> {
               TextButton.icon(
                 icon: const Icon(Icons.logout_outlined, size: 18),
                 label: const Text('Abmelden'),
-                onPressed: () => _showLogoutDialog(context),
+                onPressed: () => _confirmLogout(context),
               ),
             ],
           ),
@@ -172,13 +219,11 @@ class _AccountSectionState extends State<AccountSection> {
         // Nur für Login-Flow-Konten (2FA) sichtbar — Passwort-Konten heilen
         // sich still über das App-Passwort-Minting und sollen von dem ganzen
         // Flow-Mechanismus nichts mitbekommen.
-        if (!AccountData().isDemo && AccountData().usesLoginFlow)
+        if (!SessionManager().isDemo && nextcloud.usesLoginFlow)
           AsyncListTile(
             leading: const Icon(Icons.cloud_sync_outlined),
             title: const Text('Nextcloud neu verbinden'),
-            subtitle: const Text(
-              'Bei Anmeldeproblemen in Talk oder Dateien',
-            ),
+            subtitle: const Text('Bei Anmeldeproblemen in Talk oder Dateien'),
             closeOnSuccess: false,
             onPressed: _reconnectNextcloud,
           ),
@@ -197,35 +242,29 @@ class _AccountSectionState extends State<AccountSection> {
       const SnackBar(content: Text('Nextcloud-Verbindung erneuert.')),
     );
   }
+}
 
-  Future<void> _showLogoutDialog(BuildContext context) async {
-    // Flip AccountBloc state only after the dialog fully closes: doing it from
-    // inside removeData (the previous approach) raced AsyncDialogAction's
-    // pop(true) against the listener's popUntil(isFirst) and could leave the
-    // navigator in an inconsistent state.
-    final confirmed = await showDialog<bool>(
-      context: context,
-      builder: (dialogContext) => ConfirmDialog(
-        title: 'Abmelden?',
-        content: 'Möchtest du dich wirklich abmelden?',
-        confirmButton: 'Abmelden',
-        onConfirmAsync: _performLogout,
-      ),
-    );
-    if (confirmed != true || !context.mounted) return;
-    context.read<AccountBloc>().setStatus(AccountStatus.loggedOut);
-  }
+Future<void> _confirmLogout(BuildContext context) async {
+  // Flip AccountBloc state only after the dialog fully closes: doing it from
+  // inside the sign-out (the previous approach) raced AsyncDialogAction's
+  // pop(true) against the listener's popUntil(isFirst) and could leave the
+  // navigator in an inconsistent state.
+  final confirmed = await showDialog<bool>(
+    context: context,
+    builder: (dialogContext) => ConfirmDialog(
+      title: 'Abmelden?',
+      content: 'Möchtest du dich wirklich abmelden?',
+      confirmButton: 'Abmelden',
+      onConfirmAsync: _performLogout,
+    ),
+  );
+  if (confirmed != true || !context.mounted) return;
+  context.read<AccountBloc>().setStatus(AccountStatus.loggedOut);
+}
 
-  // Ordered teardown: unregister push at Nextcloud + proxy and revoke the app
-  // password (while Nextcloud credentials are still available), THEN revoke the
-  // MC bearer token, and finally wipe local credentials. Each step is
-  // best-effort so an offline logout still reaches a clean local state.
-  Future<void> _performLogout() async {
-    await PushRegistration().logoutCleanup();
-    await AuthLogout().run();
-    await AccountData().removeData();
-    _cachedDisplayName = null;
-  }
+Future<void> _performLogout() async {
+  await SessionLifecycle.signOut();
+  _cachedDisplayName = null;
 }
 
 class _AvatarEditBadge extends StatelessWidget {
@@ -253,11 +292,7 @@ class _AvatarEditBadge extends StatelessWidget {
                     color: theme.colorScheme.onPrimary,
                   ),
                 )
-              : Icon(
-                  Icons.edit,
-                  size: 14,
-                  color: theme.colorScheme.onPrimary,
-                ),
+              : Icon(Icons.edit, size: 14, color: theme.colorScheme.onPrimary),
         ),
       ),
     );