Harden geofence automation and home editing

lib/screens/home_edit_screen.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import '../app/error_message.dart';
+import '../features/homes/services/home_connection_change.dart';
 import '../models/home_config.dart';
 import '../providers/providers.dart';
 import '../services/api_client.dart';
@@ -23,6 +24,8 @@ class _HomeEditScreenState extends ConsumerState<HomeEditScreen> {
   final _latCtrl = TextEditingController();
   final _lonCtrl = TextEditingController();
   bool _saving = false;
+  bool _loadingApiKey = false;
+  String _originalApiKey = '';
 
   bool get _isEdit => widget.home != null;
 
@@ -42,6 +45,7 @@ class _HomeEditScreenState extends ConsumerState<HomeEditScreen> {
       if (widget.home!.longitude != null) {
         _lonCtrl.text = widget.home!.longitude.toString();
       }
+      _loadingApiKey = true;
       _loadApiKey();
     }
 
@@ -51,11 +55,19 @@ class _HomeEditScreenState extends ConsumerState<HomeEditScreen> {
   }
 
   Future<void> _loadApiKey() async {
-    final apiKey = await ref
-        .read(settingsServiceProvider)
-        .getHomeApiKey(widget.home!.id);
-    if (mounted && apiKey != null) {
-      _keyCtrl.text = apiKey;
+    try {
+      final apiKey = await ref
+          .read(settingsServiceProvider)
+          .getHomeApiKey(widget.home!.id);
+      _originalApiKey = apiKey ?? '';
+      if (!mounted) {
+        return;
+      }
+      _keyCtrl.text = _originalApiKey;
+    } finally {
+      if (mounted) {
+        setState(() => _loadingApiKey = false);
+      }
     }
   }
 
@@ -130,10 +142,12 @@ class _HomeEditScreenState extends ConsumerState<HomeEditScreen> {
               const SizedBox(height: 12),
               TextFormField(
                 controller: _keyCtrl,
-                decoration: const InputDecoration(
+                decoration: InputDecoration(
                   labelText: 'API Key',
-                  helperText: 'Ключ проверяется перед сохранением дома',
-                  prefixIcon: Icon(Icons.key),
+                  helperText: _loadingApiKey
+                      ? 'Загружаем сохранённый ключ...'
+                      : 'Ключ проверяется только при изменении подключения',
+                  prefixIcon: const Icon(Icons.key),
                 ),
                 obscureText: true,
                 validator: (value) =>
@@ -236,7 +250,7 @@ class _HomeEditScreenState extends ConsumerState<HomeEditScreen> {
                     backgroundColor: Colors.deepOrange,
                     foregroundColor: Colors.white,
                   ),
-                  onPressed: _saving ? null : _save,
+                  onPressed: (_saving || _loadingApiKey) ? null : _save,
                   child: _saving
                       ? const SizedBox(
                           width: 20,
@@ -259,6 +273,12 @@ class _HomeEditScreenState extends ConsumerState<HomeEditScreen> {
 
   Future<void> _save() async {
     FocusScope.of(context).unfocus();
+    if (_loadingApiKey) {
+      ScaffoldMessenger.of(context).showSnackBar(
+        const SnackBar(content: Text('Подождите, API key ещё загружается')),
+      );
+      return;
+    }
     if (!_formKey.currentState!.validate()) {
       return;
     }
@@ -319,6 +339,12 @@ class _HomeEditScreenState extends ConsumerState<HomeEditScreen> {
     setState(() => _saving = true);
 
     final clearCoords = latText.isEmpty && lonText.isEmpty;
+    final credentialsChanged = hasHomeConnectionChanges(
+      originalHome: widget.home,
+      normalizedUrl: url,
+      apiKey: key,
+      originalApiKey: _originalApiKey,
+    );
 
     final home = _isEdit
         ? widget.home!.copyWith(
@@ -337,17 +363,25 @@ class _HomeEditScreenState extends ConsumerState<HomeEditScreen> {
           );
 
     try {
-      await ref.read(apiProvider).validateCredentials(url, key);
+      if (credentialsChanged) {
+        await ref.read(apiProvider).validateCredentials(url, key);
+      }
 
       if (_isEdit) {
-        await ref.read(homesProvider.notifier).update(home, apiKey: key);
+        await ref
+            .read(homesProvider.notifier)
+            .update(home, apiKey: credentialsChanged ? key : null);
       } else {
         await ref.read(homesProvider.notifier).add(home, apiKey: key);
       }
 
       final currentHome = ref.read(currentHomeProvider);
       if (currentHome?.id == home.id) {
-        await ref.read(currentHomeProvider.notifier).select(home);
+        if (credentialsChanged) {
+          await ref.read(currentHomeProvider.notifier).select(home);
+        } else {
+          await ref.read(currentHomeProvider.notifier).switchTo(home);
+        }
       }
 
       if (mounted) Navigator.of(context).pop();