Implemented settings, new scan, enhanced UI/UX

lib/feature/delivery/overview/service/distance_service.dart

@@ -0,0 +1,82 @@
+import 'package:flutter/cupertino.dart';
+import 'package:geolocator/geolocator.dart';
+import 'package:http/http.dart' as http;
+import 'dart:convert';
+
+class DistanceService {
+  static const String GOOGLE_MAPS_API_KEY = 'DEIN_API_KEY_HIER';
+
+  static Future<Position> getCurrentLocation() async {
+    bool serviceEnabled = await Geolocator.isLocationServiceEnabled();
+    if (!serviceEnabled) {
+      throw Exception('Location services sind deaktiviert');
+    }
+
+    LocationPermission permission = await Geolocator.checkPermission();
+    if (permission == LocationPermission.denied) {
+      permission = await Geolocator.requestPermission();
+    }
+
+    return await Geolocator.getCurrentPosition();
+  }
+
+  // Adresse in Koordinaten umwandeln (Geocoding)
+  static Future<Map<String, double>> getCoordinates(String address) async {
+    String url =
+        'https://maps.googleapis.com/maps/api/geocode/json'
+        '?address=${Uri.encodeComponent(address)}'
+        '&key=AIzaSyB5_1ftLnoswoy59FzNFkrQ7SSDma5eu5E';
+
+    final response = await http.get(Uri.parse(url));
+
+    if (response.statusCode == 200) {
+      var json = jsonDecode(response.body);
+
+      if (json['results'].isNotEmpty) {
+        var location = json['results'][0]['geometry']['location'];
+        return {
+          'lat': location['lat'],
+          'lng': location['lng'],
+        };
+      }
+      throw Exception('Adresse nicht gefunden');
+    }
+    throw Exception('Geocoding Fehler: ${response.statusCode}');
+  }
+
+  // Distanz berechnen
+  static Future<double> getDistanceByRoad(String address) async {
+    try {
+      Position currentPos = await getCurrentLocation();
+      Map<String, double> coords = await getCoordinates(address);
+
+      String origin = "${currentPos.latitude},${currentPos.longitude}";
+      String destination = "${coords['lat']},${coords['lng']}";
+
+      String url =
+          'https://maps.googleapis.com/maps/api/distancematrix/json'
+          '?origins=$origin'
+          '&destinations=$destination'
+          '&key=AIzaSyB5_1ftLnoswoy59FzNFkrQ7SSDma5eu5E';
+
+      final response = await http.get(Uri.parse(url));
+
+      debugPrint(response.body);
+
+      if (response.statusCode == 200) {
+        var json = jsonDecode(response.body);
+
+        if (json['rows'][0]['elements'][0]['status'] == 'OK') {
+          int distanceMeters = json['rows'][0]['elements'][0]['distance']['value'];
+          return distanceMeters / 1000; // In km
+        } else {
+          throw Exception('Route nicht gefunden');
+        }
+      } else {
+        throw Exception('API Fehler: ${response.statusCode}');
+      }
+    } catch (e) {
+      throw Exception('Fehler: $e');
+    }
+  }
+}