feat: separate default model for the app

lib/core/models/user_settings.dart

@@ -31,6 +31,9 @@ sealed class UserSettings with _$UserSettings {
     @Default(false) bool reduceMotion,
     @Default(true) bool hapticFeedback,
 
+    // Model preferences
+    String? defaultModelId,
+
     // Advanced settings
     @Default({}) Map<String, dynamic> customSettings,
   }) = _UserSettings;

lib/core/providers/app_providers.dart

@@ -18,6 +18,7 @@ import '../models/folder.dart';
 import '../models/user_settings.dart';
 import '../models/file_info.dart';
 import '../models/knowledge_base.dart';
+import '../services/settings_service.dart';
 import '../services/optimized_storage_service.dart';
 
 // Storage providers
@@ -500,8 +501,10 @@ final loadConversationProvider = FutureProvider.family<Conversation, String>((
   return fullConversation;
 });
 
-// Provider to automatically load and set the default model from OpenWebUI
+// Provider to automatically load and set the default model from user settings or OpenWebUI
 final defaultModelProvider = FutureProvider<Model?>((ref) async {
+  // Watch user settings to refresh when default model changes
+  ref.watch(appSettingsProvider);
   // Handle reviewer mode first
   final reviewerMode = ref.watch(reviewerModeProvider);
   if (reviewerMode) {
@@ -562,45 +565,71 @@ final defaultModelProvider = FutureProvider<Model?>((ref) async {
 
     Model? selectedModel;
 
-    // Try to get the server's default model configuration
-    try {
-      final defaultModelId = await api.getDefaultModel();
+    // First check user's preferred default model
+    final userSettings = ref.read(appSettingsProvider);
+    final userDefaultModelId = userSettings.defaultModel;
+    
+    if (userDefaultModelId != null && userDefaultModelId.isNotEmpty) {
+      try {
+        selectedModel = models.firstWhere(
+          (model) =>
+              model.id == userDefaultModelId ||
+              model.name == userDefaultModelId ||
+              model.id.contains(userDefaultModelId) ||
+              model.name.contains(userDefaultModelId),
+        );
+        foundation.debugPrint(
+          'DEBUG: Found user default model: ${selectedModel.name}',
+        );
+      } catch (e) {
+        foundation.debugPrint(
+          'DEBUG: User default model "$userDefaultModelId" not found in available models',
+        );
+        selectedModel = null; // Will fall back to server default or first model
+      }
+    }
 
-      if (defaultModelId != null && defaultModelId.isNotEmpty) {
-        // Find the model that matches the default model ID
-        try {
-          selectedModel = models.firstWhere(
-            (model) =>
-                model.id == defaultModelId ||
-                model.name == defaultModelId ||
-                model.id.contains(defaultModelId) ||
-                model.name.contains(defaultModelId),
-          );
-          foundation.debugPrint(
-            'DEBUG: Found server default model: ${selectedModel.name}',
-          );
-        } catch (e) {
-          foundation.debugPrint(
-            'DEBUG: Default model "$defaultModelId" not found in available models',
-          );
+    // If no user default or user default not found, try server's default model
+    if (selectedModel == null) {
+      try {
+        final defaultModelId = await api.getDefaultModel();
+
+        if (defaultModelId != null && defaultModelId.isNotEmpty) {
+          // Find the model that matches the default model ID
+          try {
+            selectedModel = models.firstWhere(
+              (model) =>
+                  model.id == defaultModelId ||
+                  model.name == defaultModelId ||
+                  model.id.contains(defaultModelId) ||
+                  model.name.contains(defaultModelId),
+            );
+            foundation.debugPrint(
+              'DEBUG: Found server default model: ${selectedModel.name}',
+            );
+          } catch (e) {
+            foundation.debugPrint(
+              'DEBUG: Server default model "$defaultModelId" not found in available models',
+            );
+            selectedModel = models.first;
+          }
+        } else {
+          // No server default, use first available model
           selectedModel = models.first;
+          foundation.debugPrint(
+            'DEBUG: No server default model, using first available: ${selectedModel.name}',
+          );
         }
-      } else {
-        // No server default, use first available model
+      } catch (apiError) {
+        foundation.debugPrint(
+          'DEBUG: Failed to get default model from server: $apiError',
+        );
+        // Use first available model as fallback
         selectedModel = models.first;
         foundation.debugPrint(
-          'DEBUG: No server default model, using first available: ${selectedModel.name}',
+          'DEBUG: Using first available model as fallback: ${selectedModel.name}',
         );
       }
-    } catch (apiError) {
-      foundation.debugPrint(
-        'DEBUG: Failed to get default model from server: $apiError',
-      );
-      // Use first available model as fallback
-      selectedModel = models.first;
-      foundation.debugPrint(
-        'DEBUG: Using first available model as fallback: ${selectedModel.name}',
-      );
     }
 
     // Defer the state update to avoid modifying providers during initialization

lib/core/services/navigation_service.dart

@@ -3,7 +3,7 @@ import 'package:flutter/services.dart';
 // ThemedDialogs handles theming; no direct use of extensions here
 import '../../features/chat/views/chat_page.dart';
 import '../../features/auth/views/connect_signin_page.dart';
-import '../../features/settings/views/searchable_settings_page.dart';
+
 import '../../features/profile/views/profile_page.dart';
 import '../../features/files/views/files_page.dart';
 
@@ -148,10 +148,7 @@ class NavigationService {
     return navigateTo(Routes.login, clearStack: true);
   }
 
-  /// Navigate to settings
-  static Future<void> navigateToSettings() {
-    return navigateTo(Routes.settings);
-  }
+
 
   /// Navigate to profile
   static Future<void> navigateToProfile() {
@@ -202,9 +199,7 @@ class NavigationService {
         page = const ConnectAndSignInPage();
         break;
 
-      case Routes.settings:
-        page = const SearchableSettingsPage();
-        break;
+
 
       case Routes.profile:
         page = const ProfilePage();
@@ -244,7 +239,7 @@ class NavigationService {
 class Routes {
   static const String chat = '/chat';
   static const String login = '/login';
-  static const String settings = '/settings';
+
   static const String profile = '/profile';
   static const String serverConnection = '/server-connection';
   static const String search = '/search';

lib/core/services/settings_service.dart

@@ -11,6 +11,7 @@ class SettingsService {
   static const String _highContrastKey = 'high_contrast';
   static const String _largeTextKey = 'large_text';
   static const String _darkModeKey = 'dark_mode';
+  static const String _defaultModelKey = 'default_model';
 
   /// Get reduced motion preference
   static Future<bool> getReduceMotion() async {
@@ -84,6 +85,22 @@ class SettingsService {
     await prefs.setBool(_darkModeKey, value);
   }
 
+  /// Get default model preference
+  static Future<String?> getDefaultModel() async {
+    final prefs = await SharedPreferences.getInstance();
+    return prefs.getString(_defaultModelKey);
+  }
+
+  /// Set default model preference
+  static Future<void> setDefaultModel(String? modelId) async {
+    final prefs = await SharedPreferences.getInstance();
+    if (modelId != null) {
+      await prefs.setString(_defaultModelKey, modelId);
+    } else {
+      await prefs.remove(_defaultModelKey);
+    }
+  }
+
   /// Load all settings
   static Future<AppSettings> loadSettings() async {
     return AppSettings(
@@ -93,6 +110,7 @@ class SettingsService {
       highContrast: await getHighContrast(),
       largeText: await getLargeText(),
       darkMode: await getDarkMode(),
+      defaultModel: await getDefaultModel(),
     );
   }
 
@@ -105,6 +123,7 @@ class SettingsService {
       setHighContrast(settings.highContrast),
       setLargeText(settings.largeText),
       setDarkMode(settings.darkMode),
+      setDefaultModel(settings.defaultModel),
     ]);
   }
 
@@ -151,6 +170,7 @@ class AppSettings {
   final bool highContrast;
   final bool largeText;
   final bool darkMode;
+  final String? defaultModel;
 
   const AppSettings({
     this.reduceMotion = false,
@@ -159,6 +179,7 @@ class AppSettings {
     this.highContrast = false,
     this.largeText = false,
     this.darkMode = true,
+    this.defaultModel,
   });
 
   AppSettings copyWith({
@@ -168,6 +189,7 @@ class AppSettings {
     bool? highContrast,
     bool? largeText,
     bool? darkMode,
+    String? defaultModel,
   }) {
     return AppSettings(
       reduceMotion: reduceMotion ?? this.reduceMotion,
@@ -176,6 +198,7 @@ class AppSettings {
       highContrast: highContrast ?? this.highContrast,
       largeText: largeText ?? this.largeText,
       darkMode: darkMode ?? this.darkMode,
+      defaultModel: defaultModel ?? this.defaultModel,
     );
   }
 
@@ -188,7 +211,8 @@ class AppSettings {
         other.hapticFeedback == hapticFeedback &&
         other.highContrast == highContrast &&
         other.largeText == largeText &&
-        other.darkMode == darkMode;
+        other.darkMode == darkMode &&
+        other.defaultModel == defaultModel;
   }
 
   @override
@@ -200,6 +224,7 @@ class AppSettings {
       highContrast,
       largeText,
       darkMode,
+      defaultModel,
     );
   }
 }
@@ -250,6 +275,11 @@ class AppSettingsNotifier extends StateNotifier<AppSettings> {
     await SettingsService.setDarkMode(value);
   }
 
+  Future<void> setDefaultModel(String? modelId) async {
+    state = state.copyWith(defaultModel: modelId);
+    await SettingsService.setDefaultModel(modelId);
+  }
+
   Future<void> resetToDefaults() async {
     const defaultSettings = AppSettings();
     await SettingsService.saveSettings(defaultSettings);