pre final ad services and correct call the services async

lib/services/geolocation_service.dart

@@ -0,0 +1,54 @@
+
+import 'package:geolocator/geolocator.dart';
+
+class GeolocationService {
+  late double latitude;
+  late double longitude;
+  late bool hasLocation;
+
+  
+
+  Future<void> getCurrentLocation() async {
+
+    bool serviceEnabled = false;
+    LocationPermission permission;
+
+    try {
+      // 1. Prüfen, ob Standortdienste aktiviert sind
+      serviceEnabled = await Geolocator.isLocationServiceEnabled();
+      if (!serviceEnabled) {
+        return Future.error('Standortdienste sind deaktiviert.');
+      }
+
+      hasLocation = serviceEnabled;
+
+      // 2. Berechtigungen prüfen
+      permission = await Geolocator.checkPermission();
+      if (permission == LocationPermission.denied) {
+        permission = await Geolocator.requestPermission();
+        hasLocation = true;
+        if (permission == LocationPermission.denied) {
+          hasLocation = false;
+          return Future.error('Berechtigung verweigert.');
+        }
+      }      
+
+      // 3. Position abrufen
+      Position position = await Geolocator.getCurrentPosition(
+        locationSettings: const LocationSettings(
+          accuracy: LocationAccuracy.high,
+        ),
+      );
+
+      // 4. Standort über Backend-Proxy abrufen
+      latitude = position.latitude;
+      longitude = position.longitude;
+      if(latitude > 0 && longitude > 0) {
+        hasLocation = true;
+      }
+    } catch (e) {
+      print("Fehler beim Abrufen des Standorts: $e");
+      hasLocation = false;
+    }
+  }
+}