First commit

lib/providers/theme_provider.dart

@@ -0,0 +1,50 @@
+import 'package:flutter/material.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+class ThemeProvider extends ChangeNotifier {
+  ThemeMode _themeMode = ThemeMode.system;
+
+  ThemeMode get themeMode => _themeMode;
+
+  bool get isDarkMode {
+    if (_themeMode == ThemeMode.system) {
+      return WidgetsBinding.instance.window.platformBrightness ==
+          Brightness.dark;
+    }
+    return _themeMode == ThemeMode.dark;
+  }
+
+  ThemeProvider() {
+    _loadThemeMode();
+  }
+
+  void setThemeMode(ThemeMode themeMode) async {
+    _themeMode = themeMode;
+    notifyListeners();
+
+    // Sauvegarder la préférence
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setString('themeMode', themeMode.toString());
+  }
+
+  void _loadThemeMode() async {
+    final prefs = await SharedPreferences.getInstance();
+    final themeModeString = prefs.getString('themeMode');
+
+    if (themeModeString != null) {
+      switch (themeModeString) {
+        case 'ThemeMode.light':
+          _themeMode = ThemeMode.light;
+          break;
+        case 'ThemeMode.dark':
+          _themeMode = ThemeMode.dark;
+          break;
+        case 'ThemeMode.system':
+        default:
+          _themeMode = ThemeMode.system;
+          break;
+      }
+      notifyListeners();
+    }
+  }
+}