implemented favorite and leave actions for chat/rooms info view

lib/view/pages/talk/details/chat_info.dart

@@ -1,8 +1,13 @@
 import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
 
+import '../../../../api/marianumcloud/talk/actions/talk_actions.dart';
 import '../../../../api/marianumcloud/talk/get_participants/get_participants_cache.dart';
 import '../../../../api/marianumcloud/talk/get_participants/get_participants_response.dart';
 import '../../../../api/marianumcloud/talk/room/get_room_response.dart';
+import '../../../../state/app/modules/chat_list/bloc/chat_list_bloc.dart';
+import '../../../../widget/async_action_button.dart';
+import '../../../../widget/confirm_dialog.dart';
 import '../../../../widget/large_profile_picture_view.dart';
 import '../../../../widget/loading_spinner.dart';
 import '../../../../widget/user_avatar.dart';
@@ -19,9 +24,12 @@ class ChatInfo extends StatefulWidget {
 
 class _ChatInfoState extends State<ChatInfo> {
   GetParticipantsResponse? participants;
+  late bool _isFavorite;
 
   @override
   void initState() {
+    super.initState();
+    _isFavorite = widget.room.isFavorite;
     GetParticipantsCache(
       chatToken: widget.room.token,
       onUpdate: (GetParticipantsResponse data) {
@@ -30,7 +38,32 @@ class _ChatInfoState extends State<ChatInfo> {
         });
       },
     );
-    super.initState();
+  }
+
+  void _refreshList() => context.read<ChatListBloc>().refresh();
+
+  Future<void> _toggleFavorite() async {
+    final next = !_isFavorite;
+    await SetFavorite(widget.room.token, next).run();
+    if (!mounted) return;
+    setState(() => _isFavorite = next);
+    _refreshList();
+  }
+
+  Future<void> _confirmLeave() async {
+    final closed = await showDialog<bool>(
+      context: context,
+      builder: (_) => ConfirmDialog(
+        title: 'Talk-Chat verlassen',
+        content: 'Du benötigst ggf. eine Einladung um erneut beizutreten.',
+        confirmButton: 'Verlassen',
+        onConfirmAsync: () async {
+          await LeaveRoom(widget.room.token).run();
+          if (mounted) _refreshList();
+        },
+      ),
+    );
+    if (closed == true && mounted) Navigator.of(context).pop();
   }
 
   @override
@@ -39,12 +72,11 @@ class _ChatInfoState extends State<ChatInfo> {
         widget.room.type != GetRoomResponseObjectConversationType.oneToOne;
     return Scaffold(
       appBar: AppBar(title: Text(widget.room.displayName)),
-      body: Center(
-        child: Column(
-          crossAxisAlignment: CrossAxisAlignment.center,
+      body: ListView(
         children: [
           const SizedBox(height: 30),
-            GestureDetector(
+          Center(
+            child: GestureDetector(
               child: UserAvatar(
                 id: isGroup ? widget.room.token : widget.room.name,
                 isGroup: isGroup,
@@ -58,19 +90,28 @@ class _ChatInfoState extends State<ChatInfo> {
                 ),
               ),
             ),
+          ),
           const SizedBox(height: 30),
           Text(
             widget.room.displayName,
             textAlign: TextAlign.center,
             style: const TextStyle(fontSize: 30),
           ),
-            if (!isGroup) Text(widget.room.name),
+          if (!isGroup)
+            Text(widget.room.name, textAlign: TextAlign.center),
           const SizedBox(height: 10),
           if (isGroup)
-              Text(widget.room.description, textAlign: TextAlign.center),
+            Padding(
+              padding: const EdgeInsets.symmetric(horizontal: 24),
+              child: Text(
+                widget.room.description,
+                textAlign: TextAlign.center,
+              ),
+            ),
           const SizedBox(height: 30),
-            if (participants == null) const LoadingSpinner(),
-            if (participants != null) ...[
+          if (participants == null)
+            const Center(child: LoadingSpinner())
+          else
             ListTile(
               leading: const Icon(Icons.supervised_user_circle),
               title: Text('${participants!.data.length} Mitglieder'),
@@ -83,9 +124,31 @@ class _ChatInfoState extends State<ChatInfo> {
                 ),
               ),
             ),
-            ],
-          ],
+          if (_isFavorite)
+            AsyncListTile(
+              leading: const Icon(Icons.stars_outlined),
+              title: const Text('Von Favoriten entfernen'),
+              onPressed: _toggleFavorite,
+            )
+          else
+            AsyncListTile(
+              leading: const Icon(Icons.star_outline),
+              title: const Text('Zu Favoriten hinzufügen'),
+              onPressed: _toggleFavorite,
             ),
+          const Divider(),
+          ListTile(
+            leading: Icon(
+              Icons.delete_outline,
+              color: Theme.of(context).colorScheme.error,
+            ),
+            title: Text(
+              'Talk-Chat verlassen',
+              style: TextStyle(color: Theme.of(context).colorScheme.error),
+            ),
+            onTap: _confirmLeave,
+          ),
+        ],
       ),
     );
   }