import re

path = "packages/tactical_app/lib/controllers/tactical_map_controller.dart"
with open(path, "r") as f: content = f.read()

# Replace initGps with a stream version
old_init_gps_start = "  /// Initialize Live GPS Sensor"
old_init_gps_end = "  void switchMode"

stream_gps = """  /// Initialize Live GPS Sensor / تهيئة حساس الموقع الجغرافي
  Future<void> initGps() async {
    try {
      final serviceEnabled = await Geolocator.isLocationServiceEnabled();
      if (!serviceEnabled) return;

      LocationPermission perm = await Geolocator.checkPermission();
      if (perm == LocationPermission.denied) {
        perm = await Geolocator.requestPermission();
      }
      if (perm == LocationPermission.whileInUse || perm == LocationPermission.always) {
        // 1. Get initial position and jump camera
        final pos = await Geolocator.getCurrentPosition(
          locationSettings: const LocationSettings(
            accuracy: LocationAccuracy.high,
            timeLimit: Duration(seconds: 5),
          ),
        );
        currentGpsPosition.value = LatLng(pos.latitude, pos.longitude);
        currentCameraCenter.value = currentGpsPosition.value!;
        tracker.updateMyPosition(currentGpsPosition.value!, pos.heading);
        
        mapController?.animateCamera(
          CameraUpdate.newLatLngZoom(currentGpsPosition.value!, 14.0),
        );

        // 2. Listen to continuous GPS updates for Blue Force Tracking
        Geolocator.getPositionStream(
          locationSettings: const LocationSettings(
            accuracy: LocationAccuracy.high,
            distanceFilter: 2, // update every 2 meters
          ),
        ).listen((Position newPos) {
          final latLng = LatLng(newPos.latitude, newPos.longitude);
          currentGpsPosition.value = latLng;
          tracker.updateMyPosition(latLng, newPos.heading);
        });
      }
    } catch (e) {
      debugPrint('GPS init error: $e');
    }
  }

"""

# Naive replacement
idx_start = content.find(old_init_gps_start)
idx_end = content.find("  /// Switch Tactical", idx_start)

if idx_start != -1 and idx_end != -1:
    content = content[:idx_start] + stream_gps + content[idx_end:]

with open(path, "w") as f: f.write(content)