Initialer Commit: Projekt Start

lib/providers/user_provider.dart

@@ -0,0 +1,63 @@
+import 'package:flutter/foundation.dart';
+import '../models/user.dart';
+import '../services/auth_service.dart';
+
+class UserProvider extends ChangeNotifier {
+  final AuthService _authService = AuthService();
+  User? _user;
+  bool _isLoading = false;
+
+  User? get user => _user;
+  bool get isLoggedIn => _user != null;
+  bool get isLoading => _isLoading;
+
+  UserProvider() {
+    _loadSavedUser();
+  }
+
+  Future<void> _loadSavedUser() async {
+    _isLoading = true;
+    notifyListeners();
+
+    try {
+      _user = await _authService.getSavedUser();
+    } catch (e) {
+      print('Fehler beim Laden des Benutzers: $e');
+    } finally {
+      _isLoading = false;
+      notifyListeners();
+    }
+  }
+
+  Future<bool> login(String username, String password) async {
+    _isLoading = true;
+    notifyListeners();
+
+    try {
+      final user = await _authService.login(username, password);
+      if (user != null) {
+        _user = user;
+        _isLoading = false;
+        notifyListeners();
+        return true;
+      }
+    } catch (e) {
+      print('Login-Fehler: $e');
+    }
+
+    _isLoading = false;
+    notifyListeners();
+    return false;
+  }
+
+  Future<void> logout() async {
+    await _authService.logout();
+    _user = null;
+    notifyListeners();
+  }
+
+  Future<void> refreshUser() async {
+    await _loadSavedUser();
+  }
+}
+