TimeZone support

lib/BlindMasterScreens/groupControl/edit_group_dialog.dart

@@ -1,6 +1,7 @@
 import 'dart:convert';
 
 import 'package:blind_master/BlindMasterResources/secure_transmissions.dart';
+import 'package:blind_master/BlindMasterResources/timezone_picker.dart';
 import 'package:flutter/material.dart';
 import 'package:google_fonts/google_fonts.dart';
 
@@ -21,19 +22,28 @@ class EditGroupDialog extends StatefulWidget {
 }
 
 class _EditGroupDialogState extends State<EditGroupDialog> {
+  late final TextEditingController _nameController;
   List<Map<String, dynamic>> devices = [];
   Map<int, List<Map<String, dynamic>>> devicePeripherals = {};
   Set<int> selectedPeripheralIds = {};
+  String? _selectedTimezone;
   bool isLoading = true;
   String? errorMessage;
 
   @override
   void initState() {
     super.initState();
+    _nameController = TextEditingController();
     selectedPeripheralIds = widget.currentPeripheralIds.toSet();
     _loadDevicesAndPeripherals();
   }
 
+  @override
+  void dispose() {
+    _nameController.dispose();
+    super.dispose();
+  }
+
   Future<void> _loadDevicesAndPeripherals() async {
     setState(() {
       isLoading = true;
@@ -41,6 +51,16 @@ class _EditGroupDialogState extends State<EditGroupDialog> {
     });
 
     try {
+      // Fetch current group timezone
+      final tzResponse = await secureGet(
+        'group_timezone',
+        queryParameters: {'groupId': widget.groupId.toString()},
+      );
+      if (tzResponse != null && tzResponse.statusCode == 200) {
+        final tzBody = jsonDecode(tzResponse.body);
+        _selectedTimezone = tzBody['timezone'] as String?;
+      }
+
       // Fetch devices
       final devicesResponse = await secureGet('device_list');
       if (devicesResponse == null || devicesResponse.statusCode != 200) {
@@ -89,20 +109,42 @@ class _EditGroupDialogState extends State<EditGroupDialog> {
   }
 
   Future<void> _updateGroup() async {
+    final newName = _nameController.text.trim();
     if (selectedPeripheralIds.length < 2) {
-      setState(() {
-        errorMessage = 'Please select at least 2 blinds';
-      });
+      setState(() { errorMessage = 'Please select at least 2 blinds'; });
       return;
     }
 
     try {
+      // Rename if a new name was entered
+      if (newName.isNotEmpty) {
+        final renameResponse = await securePost(
+          {'groupId': widget.groupId, 'newName': newName},
+          'rename_group',
+        );
+        if (renameResponse == null) throw Exception('No response');
+        if (renameResponse.statusCode == 409) {
+          setState(() { errorMessage = 'A group with this name already exists'; });
+          return;
+        }
+        if (renameResponse.statusCode != 200) throw Exception('Failed to rename group');
+      }
+
+      // Update timezone if set
+      if (_selectedTimezone != null) {
+        final tzResponse = await securePost(
+          {'groupId': widget.groupId, 'timezone': _selectedTimezone},
+          'update_group_timezone',
+        );
+        if (tzResponse == null || tzResponse.statusCode != 200) {
+          throw Exception('Failed to update timezone');
+        }
+      }
+
+      // Update members
       final response = await securePost(
-        {
-          'groupId': widget.groupId,
-          'peripheral_ids': selectedPeripheralIds.toList(),
-        },
-        'update_group'
+        {'groupId': widget.groupId, 'peripheral_ids': selectedPeripheralIds.toList()},
+        'update_group',
       );
 
       if (response != null && response.statusCode == 200) {
@@ -113,22 +155,16 @@ class _EditGroupDialogState extends State<EditGroupDialog> {
               backgroundColor: Colors.green,
             ),
           );
-          Navigator.of(context).pop();
+          Navigator.of(context).pop(newName.isNotEmpty ? newName : null);
         }
       } else if (response != null && response.statusCode == 409) {
         final errorBody = jsonDecode(response.body);
-        setState(() {
-          errorMessage = errorBody['error'] ?? 'This combination of blinds already exists';
-        });
+        setState(() { errorMessage = errorBody['error'] ?? 'This combination of blinds already exists'; });
       } else {
-        setState(() {
-          errorMessage = 'Failed to update group';
-        });
+        setState(() { errorMessage = 'Failed to update group'; });
       }
     } catch (e) {
-      setState(() {
-        errorMessage = 'Error updating group: ${e.toString()}';
-      });
+      setState(() { errorMessage = 'Error updating group: ${e.toString()}'; });
     }
   }
 
@@ -146,11 +182,28 @@ class _EditGroupDialogState extends State<EditGroupDialog> {
           : Column(
               mainAxisSize: MainAxisSize.min,
               children: <Widget>[
+                TextField(
+                  controller: _nameController,
+                  decoration: InputDecoration(
+                    labelText: 'New Group Name (blank to keep current)',
+                    border: OutlineInputBorder(borderRadius: BorderRadius.circular(8)),
+                  ),
+                  onChanged: (_) {
+                    if (errorMessage != null) setState(() => errorMessage = null);
+                  },
+                ),
+                const SizedBox(height: 12),
+                TimezonePicker(
+                  value: _selectedTimezone,
+                  label: 'Timezone (blank to keep current)',
+                  onChanged: (tz) => setState(() => _selectedTimezone = tz),
+                ),
+                const SizedBox(height: 16),
                 Container(
                   padding: const EdgeInsets.all(10),
                   decoration: BoxDecoration(
                     color: selectedPeripheralIds.length >= 2
-                      ? Theme.of(context).primaryColorLight.withValues(alpha: 0.5) 
+                      ? Theme.of(context).primaryColorLight.withValues(alpha: 0.5)
                       : Colors.orange.withValues(alpha: 0.5),
                     borderRadius: BorderRadius.circular(10),
                   ),