re factor rog

lib/features/utils/distance_calculator.dart

@@ -0,0 +1,29 @@
+import 'dart:math';
+import 'package:latlong2/latlong.dart';
+
+class DistanceCalculatorHS {
+  static const int _radius = 6371; // Radius of the Earth in kilometers
+
+  static double _degreeToRadian(double degree) {
+    return degree * pi / 180;
+  }
+
+  static double calculateDistance(LatLng location1, LatLng location2) {
+    double latDistance =
+        _degreeToRadian(location2.latitude - location1.latitude);
+    double lonDistance =
+        _degreeToRadian(location2.longitude - location1.longitude);
+
+    double a = sin(latDistance / 2) * sin(latDistance / 2) +
+        cos(_degreeToRadian(location1.latitude)) *
+            cos(_degreeToRadian(location2.latitude)) *
+            sin(lonDistance / 2) *
+            sin(lonDistance / 2);
+
+    double c = 2 * atan2(sqrt(a), sqrt(1 - a));
+
+    double distance = _radius * c * 1000; // Convert to meters
+
+    return distance;
+  }
+}