refactor follow me mode state handling

lib/widgets/map/gps_controller.dart

@@ -5,20 +5,16 @@ import 'package:geolocator/geolocator.dart';
 import 'package:latlong2/latlong.dart';
 
 import '../../dev_config.dart';
-import '../../screens/home_screen.dart' show FollowMeMode;
+import '../../app_state.dart' show FollowMeMode;
 
 /// Manages GPS location tracking, follow-me modes, and location-based map animations.
 /// Handles GPS permissions, position streams, and follow-me behavior.
 class GpsController {
   StreamSubscription<Position>? _positionSub;
   LatLng? _currentLatLng;
-  FollowMeMode _currentFollowMeMode = FollowMeMode.off;
 
   /// Get the current GPS location (if available)
   LatLng? get currentLocation => _currentLatLng;
-  
-  /// Get the current follow-me mode
-  FollowMeMode get currentFollowMeMode => _currentFollowMeMode;
 
   /// Initialize GPS location tracking
   Future<void> initializeLocation() async {
@@ -48,8 +44,6 @@ class GpsController {
     required FollowMeMode oldMode,
     required AnimatedMapController controller,
   }) {
-    // Update the stored follow-me mode
-    _currentFollowMeMode = newMode;
     debugPrint('[GpsController] Follow-me mode changed: $oldMode → $newMode');
     
     // Only act when follow-me is first enabled and we have a current location
@@ -84,6 +78,7 @@ class GpsController {
   /// Process GPS position updates and handle follow-me animations
   void processPositionUpdate({
     required Position position,
+    required FollowMeMode followMeMode,
     required AnimatedMapController controller,
     required VoidCallback onLocationUpdated,
   }) {
@@ -93,12 +88,12 @@ class GpsController {
     // Notify that location was updated (for setState, etc.)
     onLocationUpdated();
     
-    // Handle follow-me animations if enabled - use current stored mode, not parameter
-    if (_currentFollowMeMode != FollowMeMode.off) {
-      debugPrint('[GpsController] GPS position update: ${latLng.latitude}, ${latLng.longitude}, follow-me: $_currentFollowMeMode');
+    // Handle follow-me animations if enabled - use current mode from app state
+    if (followMeMode != FollowMeMode.off) {
+      debugPrint('[GpsController] GPS position update: ${latLng.latitude}, ${latLng.longitude}, follow-me: $followMeMode');
       WidgetsBinding.instance.addPostFrameCallback((_) {
         try {
-          if (_currentFollowMeMode == FollowMeMode.northUp) {
+          if (followMeMode == FollowMeMode.northUp) {
             // Follow position only, keep current rotation
             controller.animateTo(
               dest: latLng,
@@ -106,7 +101,7 @@ class GpsController {
               duration: kFollowMeAnimationDuration,
               curve: Curves.easeOut,
             );
-          } else if (_currentFollowMeMode == FollowMeMode.rotating) {
+          } else if (followMeMode == FollowMeMode.rotating) {
             // Follow position and rotation based on heading
             final heading = position.heading;
             final speed = position.speed; // Speed in m/s
@@ -135,10 +130,8 @@ class GpsController {
     required FollowMeMode followMeMode,
     required AnimatedMapController controller,
     required VoidCallback onLocationUpdated,
+    required FollowMeMode Function() getCurrentFollowMeMode,
   }) async {
-    // Store the initial follow-me mode
-    _currentFollowMeMode = followMeMode;
-    
     final perm = await Geolocator.requestPermission();
     if (perm == LocationPermission.denied ||
         perm == LocationPermission.deniedForever) {
@@ -147,8 +140,11 @@ class GpsController {
     }
 
     _positionSub = Geolocator.getPositionStream().listen((Position position) {
+      // Get the current follow-me mode from the app state each time
+      final currentFollowMeMode = getCurrentFollowMeMode();
       processPositionUpdate(
         position: position,
+        followMeMode: currentFollowMeMode,
         controller: controller,
         onLocationUpdated: onLocationUpdated,
       );

lib/widgets/map/map_position_manager.dart

@@ -4,9 +4,9 @@ import 'package:latlong2/latlong.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
 import '../../dev_config.dart';
-import '../../screens/home_screen.dart' show FollowMeMode;
 
-/// Manages map position persistence, initial positioning, and follow-me mode storage.
+
+/// Manages map position persistence and initial positioning.
 /// Handles saving/loading last map position and moving to initial locations.
 class MapPositionManager {
   LatLng? _initialLocation;
@@ -89,33 +89,7 @@ class MapPositionManager {
     }
   }
 
-  /// Save the follow-me mode to persistent storage
-  static Future<void> saveFollowMeMode(FollowMeMode mode) async {
-    try {
-      final prefs = await SharedPreferences.getInstance();
-      await prefs.setInt(kFollowMeModeKey, mode.index);
-      debugPrint('[MapPositionManager] Saved follow-me mode: $mode');
-    } catch (e) {
-      debugPrint('[MapPositionManager] Failed to save follow-me mode: $e');
-    }
-  }
 
-  /// Load the follow-me mode from persistent storage
-  static Future<FollowMeMode> loadFollowMeMode() async {
-    try {
-      final prefs = await SharedPreferences.getInstance();
-      final modeIndex = prefs.getInt(kFollowMeModeKey);
-      if (modeIndex != null && modeIndex < FollowMeMode.values.length) {
-        final mode = FollowMeMode.values[modeIndex];
-        debugPrint('[MapPositionManager] Loaded follow-me mode: $mode');
-        return mode;
-      }
-    } catch (e) {
-      debugPrint('[MapPositionManager] Failed to load follow-me mode: $e');
-    }
-    // Default to northUp if no saved mode
-    return FollowMeMode.northUp;
-  }
 
   /// Clear any stored map position (useful for recovery from invalid data)
   static Future<void> clearStoredMapPosition() async {