import 'dart:async';
import 'dart:convert';
import 'dart:typed_data';
import 'package:flutter/material.dart';
import 'package:flutter_map/flutter_map.dart' as flutter_map;
import 'package:flutter_map/flutter_map.dart';
import 'package:latlong2/latlong.dart';
import 'package:provider/provider.dart';
import 'package:geolocator/geolocator.dart';
import 'package:flutter_compass/flutter_compass.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:vector_map_tiles/vector_map_tiles.dart';
import 'package:vector_tile_renderer/vector_tile_renderer.dart' as vtr;
import 'package:http/http.dart' as http;
import '../utils/slovenian_crs.dart';
import '../providers/contacts_provider.dart';
import '../providers/messages_provider.dart';
import '../providers/map_provider.dart';
import '../providers/drawing_provider.dart';
import '../providers/app_provider.dart';
import '../providers/connection_provider.dart';
import '../models/contact.dart';
import '../models/sar_marker.dart';
import '../models/map_layer.dart';
import '../models/message.dart';
import '../services/tile_cache_service.dart';
import '../services/background_location_service.dart';
import '../services/location_tracking_service.dart';
import '../services/map_marker_service.dart';
import '../services/mbtiles_service.dart';
import '../services/trail_color_service.dart';
import '../widgets/map_debug_info.dart';
import '../widgets/map/map_legend.dart';
import '../widgets/map/compass_widget.dart';
import '../widgets/map/detailed_compass_dialog.dart';
import '../widgets/map/drawing_layer.dart';
import '../widgets/map/drawing_toolbar.dart';
import '../widgets/map/location_trail_layer.dart';
import '../widgets/map/trail_controls.dart';
import '../widgets/map/map_message_overlay.dart';
import '../widgets/map/download_area_overlay.dart';
import '../widgets/messages/sar_update_sheet.dart';
import '../l10n/app_localizations.dart';
import 'map_management_screen.dart';

class MapTab extends StatefulWidget {
  final Function(bool)? onFullscreenChanged;
  final VoidCallback? onNavigateToMessages;

  const MapTab({
    super.key,
    this.onFullscreenChanged,
    this.onNavigateToMessages,
  });

  @override
  State<MapTab> createState() => _MapTabState();
}

class _MapTabState extends State<MapTab> with AutomaticKeepAliveClientMixin {
  final MapController _mapController = MapController();
  final TileCacheService _tileCache = TileCacheService();
  // DO NOT create a new LocationTrackingService instance here
  // Use the singleton from AppProvider instead via _locationService getter
  final MapMarkerService _markerService = MapMarkerService();
  bool _isInitialized = false;
  bool _isMapReady = false; // Track when map widget is actually rendered
  MapLayer _currentLayer = MapLayer.openStreetMap;
  double? _compassHeading; // Compass sensor heading
  bool _rotateMarkerWithHeading = false; // Toggle for rotation
  bool _showLegend = false;
  bool _showMapDebugInfo = false; // Toggle for debug info
  bool _isFullscreen = false; // Toggle for fullscreen mode
  double _gpsUpdateDistance = 3.0; // meters
  bool _backgroundTrackingEnabled = false; // Toggle for background tracking
  StreamSubscription<CompassEvent>? _compassStreamSubscription;
  final BackgroundLocationService _backgroundLocationService = BackgroundLocationService();
  bool _isDisposing = false; // Flag to prevent updates during disposal

  // MBTiles layers
  List<MapLayer> _mbtilesLayers = [];

  // WMS layers (Slovenian)
  late final MapLayer _slovenianAerialLayer;

  // Vector tile theme
  vtr.Theme? _vectorTheme;
  bool _isLoadingTheme = false;

  // Dropped pin state
  LatLng? _droppedPinLocation;
  bool _isDraggingPin = false;
  final GlobalKey _pinMarkerKey = GlobalKey();

  // Saved map position (loaded from SharedPreferences)
  LatLng? _savedMapCenter;
  double? _savedMapZoom;

  // Default center point (will be updated based on markers)
  static const LatLng _defaultCenter = LatLng(46.0569, 14.5058); // Ljubljana, Slovenia
  static const double _defaultZoom = 13.0;

  @override
  bool get wantKeepAlive => true;

  // Access the singleton LocationTrackingService from AppProvider
  LocationTrackingService get _locationService => LocationTrackingService();

  /// Helper to compare public keys byte-by-byte
  bool _publicKeysMatch(Uint8List key1, Uint8List key2) {
    if (key1.length != key2.length) return false;
    for (int i = 0; i < key1.length; i++) {
      if (key1[i] != key2[i]) return false;
    }
    return true;
  }

  @override
  void initState() {
    super.initState();
    // Initialize Slovenian aerial layer with CRS
    _slovenianAerialLayer = MapLayer.getSlovenianAerial2024(slovenianCrs);
    _loadSettings();
    _loadMbtilesLayers();
    _initializeTileCache();
    _setupLocationCallbacks();
    _startCompassTracking();

    // Listen to map provider for navigation requests
    WidgetsBinding.instance.addPostFrameCallback((_) {
      final mapProvider = context.read<MapProvider>();
      mapProvider.addListener(_handleMapNavigation);
      // Load WMS overlay state
      mapProvider.loadOverlayState();

      // Initialize background location service with BLE service
      final appProvider = context.read<AppProvider>();
      _backgroundLocationService.initialize(appProvider.connectionProvider.bleService);

      // Restore background tracking state
      _restoreBackgroundTracking();
    });
  }

  /// Setup location tracking callbacks for map-specific features
  /// Note: LocationTrackingService is initialized and started by AppProvider
  /// This method only adds map-specific callbacks for rotation and UI updates
  void _setupLocationCallbacks() {
    // Store the original callback from AppProvider
    final originalCallback = _locationService.onPositionUpdate;

    // Add map-specific callback that chains with the original
    _locationService.onPositionUpdate = (position) {
      // Call original callback first (AppProvider's logging)
      originalCallback?.call(position);

      // Then handle map-specific logic
      if (mounted) {
        setState(() {
          // Position updates trigger UI rebuild for markers
        });

        // Add location point to trail when tracking is active
        final mapProvider = context.read<MapProvider>();
        if (_locationService.isTracking) {
          mapProvider.addTrailPoint(
            LatLng(position.latitude, position.longitude),
            accuracy: position.accuracy,
            speed: position.speed,
          );
        }

        // Rotate map if rotation mode is enabled and heading is available
        if (_isMapReady && _rotateMarkerWithHeading && position.heading >= 0) {
          try {
            final camera = _mapController.camera;
            _mapController.moveAndRotate(
              camera.center,
              camera.zoom,
              -position.heading,
            );
          } catch (e) {
            // Map not ready yet, ignore
          }
        }
      }
    };
  }

  void _startCompassTracking() {
    final compassStream = FlutterCompass.events;
    if (compassStream == null) {
      return;
    }

    // Start listening to compass events
    _compassStreamSubscription = compassStream.listen(
      (CompassEvent event) {
        // Check if widget is disposing, mounted, and event has valid heading
        if (_isDisposing || !mounted || event.heading == null) return;

        try {
          setState(() {
            _compassHeading = event.heading;
          });

          // Rotate map if rotation mode is enabled and we have compass heading
          // Only rotate if map is ready
          if (_rotateMarkerWithHeading && event.heading != null && _isMapReady && !_isDisposing) {
            try {
              // Use moveAndRotate to set absolute rotation
              final camera = _mapController.camera;
              _mapController.moveAndRotate(
                camera.center,
                camera.zoom,
                -event.heading!,
              );
            } catch (e) {
              // Map not ready yet, ignore
            }
          }
        } catch (e) {
          // Widget disposed during setState, ignore
          if (!_isDisposing) {
            debugPrint('Compass tracking error: $e');
          }
        }
      },
    );
  }

  /// Load MBTiles layers from file system
  Future<void> _loadMbtilesLayers() async {
    try {
      final mbtilesService = MbtilesService();
      final metadata = await mbtilesService.getAllMetadata();

      if (mounted) {
        setState(() {
          _mbtilesLayers = metadata.map((meta) {
            // Determine if data is gzipped (for Geofabrik files)
            final isGzipped = meta.format == 'pbf';

            return MapLayer.fromMbtilesFile(
              name: meta.name,
              mbtilesFile: meta.file,
              styleUrl: 'https://tiles.openfreemap.org/styles/bright',
              sourceName: 'openmaptiles',
              maxZoom: 20.0, // Override to 20 for overzooming
              isGzipped: isGzipped,
              attribution: meta.attribution,
            );
          }).toList();
        });
        debugPrint('Loaded ${_mbtilesLayers.length} MBTiles layers');
      }
    } catch (e) {
      debugPrint('Error loading MBTiles layers: $e');
    }
  }

  /// Get all available layers (default + WMS + MBTiles)
  List<MapLayer> get _allLayers => [...MapLayer.allLayers, _slovenianAerialLayer, ..._mbtilesLayers];

  Future<void> _loadSettings() async {
    final prefs = await SharedPreferences.getInstance();
    if (mounted) {
      // Load last map position if available
      final lastLat = prefs.getDouble('map_last_latitude');
      final lastLon = prefs.getDouble('map_last_longitude');
      final lastZoom = prefs.getDouble('map_last_zoom');

      // Load last map layer
      final lastLayerType = prefs.getInt('map_last_layer_type');
      final lastLayerName = prefs.getString('map_last_layer_name');

      setState(() {
        _showLegend = prefs.getBool('map_show_legend') ?? false;
        _rotateMarkerWithHeading = prefs.getBool('map_rotate_with_heading') ?? false;
        _showMapDebugInfo = prefs.getBool('map_show_debug_info') ?? false;
        _isFullscreen = prefs.getBool('map_fullscreen') ?? false;

        // Notify parent about initial fullscreen state
        WidgetsBinding.instance.addPostFrameCallback((_) {
          widget.onFullscreenChanged?.call(_isFullscreen);
        });
        _gpsUpdateDistance = prefs.getDouble('map_gps_update_distance') ?? 3.0;
        _backgroundTrackingEnabled = prefs.getBool('background_tracking_enabled') ?? false;

        // Store saved position for use in build
        if (lastLat != null && lastLon != null && lastZoom != null) {
          _savedMapCenter = LatLng(lastLat, lastLon);
          _savedMapZoom = lastZoom;
        }

        // Restore last used map layer (by type and name for MBTiles)
        if (lastLayerType != null) {
          final layerType = MapLayerType.values[lastLayerType];
          if (layerType == MapLayerType.vectorMbtiles && lastLayerName != null) {
            // Find MBTiles layer by name
            final mbtilesLayer = _mbtilesLayers.firstWhere(
              (layer) => layer.name == lastLayerName,
              orElse: () => MapLayer.openStreetMap,
            );
            _currentLayer = mbtilesLayer;
          } else if (layerType == MapLayerType.wmsBase) {
            // Use Slovenian aerial layer if that's what was saved
            _currentLayer = _slovenianAerialLayer;
          } else {
            // Use default layer
            _currentLayer = MapLayer.allLayers.firstWhere(
              (layer) => layer.type == layerType,
              orElse: () => MapLayer.openStreetMap,
            );
          }
        }

        // Clamp saved zoom if it exceeds the current layer's maximum
        // For WMS layers, use a middle zoom (11) instead of max zoom to avoid extreme close-up
        if (_savedMapZoom != null && _savedMapZoom! > _currentLayer.maxZoom) {
          _savedMapZoom = _currentLayer.isWms ? 11.0 : _currentLayer.maxZoom;
        }
      });
    }
  }

  Future<void> _saveSettings() async {
    final prefs = await SharedPreferences.getInstance();
    await prefs.setBool('map_show_legend', _showLegend);
    await prefs.setBool('map_rotate_with_heading', _rotateMarkerWithHeading);
    await prefs.setBool('map_show_debug_info', _showMapDebugInfo);
    await prefs.setBool('map_fullscreen', _isFullscreen);
    await prefs.setDouble('map_gps_update_distance', _gpsUpdateDistance);
    await prefs.setBool('background_tracking_enabled', _backgroundTrackingEnabled);

    // Save layer type and name (for MBTiles layers)
    await prefs.setInt('map_last_layer_type', _currentLayer.type.index);
    if (_currentLayer.type == MapLayerType.vectorMbtiles) {
      await prefs.setString('map_last_layer_name', _currentLayer.name);
    }
  }

  Future<void> _saveMapPosition() async {
    if (!_isMapReady) return;
    try {
      final prefs = await SharedPreferences.getInstance();
      final camera = _mapController.camera;
      await prefs.setDouble('map_last_latitude', camera.center.latitude);
      await prefs.setDouble('map_last_longitude', camera.center.longitude);
      await prefs.setDouble('map_last_zoom', camera.zoom);
    } catch (e) {
      debugPrint('Error saving map position: $e');
    }
  }


  void _handleMapNavigation() {
    final mapProvider = context.read<MapProvider>();
    if (mapProvider.targetLocation != null && _isMapReady) {
      try {
        _mapController.move(
          mapProvider.targetLocation!,
          mapProvider.targetZoom ?? _defaultZoom,
        );
        // Clear the navigation request after handling
        mapProvider.clearNavigation();
      } catch (e) {
        // Map not ready yet, ignore
        debugPrint('Map controller not ready for navigation: $e');
      }
    }
  }

  Future<void> _initializeTileCache() async {
    try {
      await _tileCache.initialize();
      if (mounted) {
        setState(() {
          _isInitialized = true;
        });
        // Wait for the map to render, then mark it as ready
        WidgetsBinding.instance.addPostFrameCallback((_) {
          if (mounted) {
            // Give the map widget one more frame to fully initialize
            Future.delayed(const Duration(milliseconds: 100), () {
              if (mounted) {
                setState(() {
                  _isMapReady = true;
                });
                debugPrint('Map is now ready for controller operations');
              }
            });
          }
        });
      }
    } catch (e) {
      debugPrint('Error initializing tile cache: $e');
      if (mounted) {
        setState(() {
          _isInitialized = true; // Continue without caching
        });
        // Still mark map as ready after a delay
        WidgetsBinding.instance.addPostFrameCallback((_) {
          if (mounted) {
            Future.delayed(const Duration(milliseconds: 100), () {
              if (mounted) {
                setState(() {
                  _isMapReady = true;
                });
                debugPrint('Map is now ready for controller operations');
              }
            });
          }
        });
      }
    }
  }

  @override
  void dispose() {
    // Set flag immediately to prevent any async callbacks from firing
    _isDisposing = true;

    // Cancel compass subscription first to stop new events
    _compassStreamSubscription?.cancel();
    _compassStreamSubscription = null;

    // Save map position before disposing
    _saveMapPosition();

    final mapProvider = context.read<MapProvider>();
    mapProvider.removeListener(_handleMapNavigation);

    // DO NOT stop location tracking - it's managed by AppProvider
    // Just clear the map-specific callback
    _locationService.onPositionUpdate = null;
    _mapController.dispose();
    _tileCache.dispose();
    super.dispose();
  }

  // Get the current heading from compass or GPS
  double? get _currentHeading {
    // Prefer compass heading as it works when stationary
    if (_compassHeading != null) {
      return _compassHeading;
    }
    // Fall back to GPS heading when moving
    final currentPosition = _locationService.currentPosition;
    if (currentPosition?.heading != null && currentPosition!.heading >= 0) {
      return currentPosition.heading;
    }
    return null;
  }

  // Safely get map rotation, returns 0.0 if map is not ready
  double _getMapRotation() {
    if (!_isMapReady) return 0.0;
    try {
      return _mapController.camera.rotation;
    } catch (e) {
      // Map controller not ready yet
      return 0.0;
    }
  }

  // Reset map rotation to north (0 degrees)
  void _resetMapRotation() {
    if (!_isMapReady) return;
    try {
      final camera = _mapController.camera;
      _mapController.moveAndRotate(camera.center, camera.zoom, 0);
    } catch (e) {
      // Silently fail if map controller not ready
      debugPrint('Failed to reset map rotation: $e');
    }
  }

  LatLng _calculateCenter(List<Contact> contacts, List<SarMarker> sarMarkers) {
    return _markerService.calculateCenter(
      contacts: contacts,
      sarMarkers: sarMarkers,
      defaultCenter: _defaultCenter,
    );
  }

  /// Load vector tile theme from URL
  Future<void> _loadVectorTheme(String styleUrl) async {
    if (_isLoadingTheme) return;

    setState(() {
      _isLoadingTheme = true;
    });

    try {
      final response = await http.get(Uri.parse(styleUrl));
      if (response.statusCode == 200) {
        final styleJson = jsonDecode(response.body) as Map<String, Object?>;
        final theme = vtr.ThemeReader().read(styleJson);

        if (mounted) {
          setState(() {
            _vectorTheme = theme;
            _isLoadingTheme = false;
          });
        }
      } else {
        throw Exception('Failed to load style: ${response.statusCode}');
      }
    } catch (e) {
      debugPrint('Error loading vector theme: $e');
      if (mounted) {
        setState(() {
          _isLoadingTheme = false;
        });
        ScaffoldMessenger.of(context).showSnackBar(
          SnackBar(
            content: Text('Failed to load map style: $e'),
            backgroundColor: Colors.red,
          ),
        );
      }
    }
  }

  void _showLayerSelector(BuildContext context) {
    showModalBottomSheet(
      context: context,
      builder: (context) => Container(
        padding: const EdgeInsets.symmetric(vertical: 16),
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            Padding(
              padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
              child: Row(
                children: [
                  const Icon(Icons.layers),
                  const SizedBox(width: 12),
                  Expanded(
                    child: Text(
                      AppLocalizations.of(context)!.selectMapLayer,
                      style: Theme.of(context).textTheme.titleMedium?.copyWith(
                            fontWeight: FontWeight.bold,
                          ),
                    ),
                  ),
                  IconButton(
                    icon: const Icon(Icons.download),
                    tooltip: AppLocalizations.of(context)!.downloadVisibleArea,
                    onPressed: () {
                      Navigator.pop(context);
                      _navigateToDownload(context);
                    },
                  ),
                ],
              ),
            ),
            const Divider(),
            Expanded(
              child: ListView(
                shrinkWrap: true,
                children: [
                  // Online layers section
                  Padding(
                    padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
                    child: Text(
                      AppLocalizations.of(context)!.onlineLayers,
                      style: Theme.of(context).textTheme.labelLarge?.copyWith(
                            color: Colors.grey[600],
                          ),
                    ),
                  ),
                  ...MapLayer.allLayers.map((layer) => ListTile(
                        leading: _currentLayer == layer
                            ? const Icon(Icons.check_circle, color: Colors.green)
                            : const Icon(Icons.radio_button_unchecked),
                        title: Text(layer.getLocalizedName(context)),
                        subtitle: Text(layer.attribution),
                        onTap: () async {
                          setState(() {
                            _currentLayer = layer;
                            // Clamp zoom level if current zoom exceeds new layer's max
                            if (_isMapReady && _mapController.camera.zoom > layer.maxZoom) {
                              _mapController.move(
                                _mapController.camera.center,
                                layer.maxZoom,
                              );
                            }
                          });
                          _saveSettings();
                          Navigator.pop(context);
                        },
                      )),
                  // Slovenian WMS base layer (only for Slovenian/Croatian regions)
                  if (AppLocalizations.of(context)!.localeName == 'sl' ||
                      AppLocalizations.of(context)!.localeName == 'hr')
                    ListTile(
                      leading: _currentLayer == _slovenianAerialLayer
                          ? const Icon(Icons.check_circle, color: Colors.green)
                          : const Icon(Icons.radio_button_unchecked),
                      title: Text(_slovenianAerialLayer.name),
                      subtitle: Text(_slovenianAerialLayer.attribution),
                      onTap: () async {
                        setState(() {
                          _currentLayer = _slovenianAerialLayer;
                          // Clamp zoom level if current zoom exceeds new layer's max
                          // For WMS layers, use a middle zoom (11) instead of max zoom to avoid extreme close-up
                          if (_isMapReady && _mapController.camera.zoom > _slovenianAerialLayer.maxZoom) {
                            _mapController.move(
                              _mapController.camera.center,
                              11.0, // Middle zoom for WMS
                            );
                          }
                        });
                        _saveSettings();
                        Navigator.pop(context);
                      },
                    ),
                  // Offline MBTiles layers section
                  if (_mbtilesLayers.isNotEmpty) ...[
                    const Divider(),
                    Padding(
                      padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
                      child: Text(
                        AppLocalizations.of(context)!.offlineLayers,
                        style: Theme.of(context).textTheme.labelLarge?.copyWith(
                              color: Colors.grey[600],
                            ),
                      ),
                    ),
                    ..._mbtilesLayers.map((layer) => ListTile(
                          leading: _currentLayer == layer
                              ? const Icon(Icons.check_circle, color: Colors.green)
                              : Icon(
                                  layer.isVector ? Icons.layers : Icons.image,
                                  color: layer.isVector ? Colors.blue : Colors.orange,
                                ),
                          title: Text(layer.name),
                          subtitle: Text(layer.attribution),
                          onTap: () async {
                            // Load vector theme if switching to vector layer
                            if (layer.isVector && layer.styleUrl != null) {
                              Navigator.pop(context);
                              await _loadVectorTheme(layer.styleUrl!);
                            }

                            setState(() {
                              _currentLayer = layer;
                              // Clamp zoom level if current zoom exceeds new layer's max
                              if (_isMapReady && _mapController.camera.zoom > layer.maxZoom) {
                                _mapController.move(
                                  _mapController.camera.center,
                                  layer.maxZoom,
                                );
                              }
                            });
                            _saveSettings();

                            if (!layer.isVector) {
                              Navigator.pop(context);
                            }
                          },
                        )),
                  ],
                  // WMS Overlays section (only for Slovenian/Croatian regions and when WMS base layer is selected)
                  if ((AppLocalizations.of(context)!.localeName == 'sl' ||
                      AppLocalizations.of(context)!.localeName == 'hr') &&
                      _currentLayer.isWms) ...[
                    const Divider(),
                    Padding(
                      padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
                      child: Text(
                        AppLocalizations.of(context)!.wmsOverlays,
                        style: Theme.of(context).textTheme.labelLarge?.copyWith(
                              color: Colors.grey[600],
                            ),
                      ),
                    ),
                    Consumer<MapProvider>(
                      builder: (context, mapProvider, _) {
                        return Column(
                          children: [
                            CheckboxListTile(
                              secondary: const Icon(Icons.grid_on, color: Colors.blue),
                              title: Text(AppLocalizations.of(context)!.cadastralParcels),
                              subtitle: const Text('© GURS'),
                              value: mapProvider.showCadastralOverlay,
                              onChanged: (value) {
                                mapProvider.toggleCadastralOverlay();
                              },
                            ),
                            CheckboxListTile(
                              secondary: const Icon(Icons.route, color: Colors.green),
                              title: Text(AppLocalizations.of(context)!.forestRoads),
                              subtitle: const Text('© GURS'),
                              value: mapProvider.showForestRoadsOverlay,
                              onChanged: (value) {
                                mapProvider.toggleForestRoadsOverlay();
                              },
                            ),
                          ],
                        );
                      },
                    ),
                  ],
                ],
              ),
            ),
          ],
        ),
      ),
    );
  }

  void _navigateToDownload(BuildContext context) {
    if (!_isMapReady) return;

    try {
      // Get current map bounds
      final bounds = _mapController.camera.visibleBounds;

      // Enter download area selection mode (show preview overlay)
      final mapProvider = context.read<MapProvider>();
      mapProvider.enterDownloadAreaMode(bounds);
    } catch (e) {
      debugPrint('Error accessing map camera: $e');
    }
  }

  void _showOptionsMenu(BuildContext context) {
    showModalBottomSheet(
      context: context,
      isScrollControlled: true,
      builder: (context) => StatefulBuilder(
        builder: (context, setModalState) => Container(
          padding: const EdgeInsets.symmetric(vertical: 16),
          child: SingleChildScrollView(
            child: Column(
              mainAxisSize: MainAxisSize.min,
              children: [
              Padding(
                padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
                child: Row(
                  children: [
                    const Icon(Icons.settings),
                    const SizedBox(width: 12),
                    Text(
                      AppLocalizations.of(context)!.mapOptions,
                      style: Theme.of(context).textTheme.titleMedium?.copyWith(
                            fontWeight: FontWeight.bold,
                          ),
                    ),
                  ],
                ),
              ),
              const Divider(),
              // Legend toggle
              SwitchListTile(
                secondary: const Icon(Icons.info_outline),
                title: Text(AppLocalizations.of(context)!.showLegend),
                subtitle: Text(AppLocalizations.of(context)!.displayMarkerTypeCounts),
                value: _showLegend,
                onChanged: (value) {
                  setState(() {
                    _showLegend = value;
                  });
                  setModalState(() {});
                  _saveSettings();
                },
              ),
              const Divider(),
              // Compass rotation toggle
              SwitchListTile(
                secondary: const Icon(Icons.explore),
                title: Text(AppLocalizations.of(context)!.rotateMapWithHeading),
                subtitle: Text(AppLocalizations.of(context)!.mapFollowsDirection),
                value: _rotateMarkerWithHeading,
                onChanged: (value) {
                  setState(() {
                    _rotateMarkerWithHeading = value;
                    // Reset map rotation when disabling (only if map is ready)
                    if (_isMapReady) {
                      try {
                        final camera = _mapController.camera;
                        if (!_rotateMarkerWithHeading) {
                          _mapController.moveAndRotate(camera.center, camera.zoom, 0);
                        } else if (_currentHeading != null) {
                          // Apply current heading rotation when enabling (if heading is valid)
                          _mapController.moveAndRotate(
                            camera.center,
                            camera.zoom,
                            -_currentHeading!,
                          );
                        }
                      } catch (e) {
                        // Map not ready yet, ignore
                      }
                    }
                  });
                  setModalState(() {});
                  _saveSettings();
                },
              ),
              const Divider(),
              // Map Debug Info toggle
              SwitchListTile(
                secondary: const Icon(Icons.developer_mode),
                title: Text(AppLocalizations.of(context)!.showMapDebugInfo),
                subtitle: Text(AppLocalizations.of(context)!.displayZoomLevelBounds),
                value: _showMapDebugInfo,
                onChanged: (value) {
                  setState(() {
                    _showMapDebugInfo = value;
                  });
                  setModalState(() {});
                  _saveSettings();
                },
              ),
              const Divider(),
              // Fullscreen mode toggle
              SwitchListTile(
                secondary: const Icon(Icons.fullscreen),
                title: Text(AppLocalizations.of(context)!.fullscreenMode),
                subtitle: Text(AppLocalizations.of(context)!.hideUiFullMapView),
                value: _isFullscreen,
                onChanged: (value) {
                  setState(() {
                    _isFullscreen = value;
                  });
                  setModalState(() {});
                  _saveSettings();
                  // Notify parent about fullscreen change
                  widget.onFullscreenChanged?.call(value);
                },
              ),
            ],
            ),
          ),
        ),
      ),
    );
  }

  void _showDetailedCompass(BuildContext context, List<Contact> contacts, List<SarMarker> sarMarkers) {
    showModalBottomSheet(
      context: context,
      isScrollControlled: true,
      backgroundColor: Colors.transparent,
      builder: (context) => Container(
        height: MediaQuery.of(context).size.height * 0.9,
        decoration: BoxDecoration(
          color: Theme.of(context).colorScheme.surface,
          borderRadius: const BorderRadius.vertical(top: Radius.circular(20)),
        ),
        child: DetailedCompassDialog(
          initialPosition: _locationService.currentPosition,
          initialHeading: _currentHeading,
          contacts: contacts,
          sarMarkers: sarMarkers,
        ),
      ),
    );
  }

  void _showDetailedCompassWithContact(
    BuildContext context,
    List<Contact> contacts,
    List<SarMarker> sarMarkers,
    Contact selectedContact,
  ) {
    showModalBottomSheet(
      context: context,
      isScrollControlled: true,
      backgroundColor: Colors.transparent,
      builder: (context) => Container(
        height: MediaQuery.of(context).size.height * 0.9,
        decoration: BoxDecoration(
          color: Theme.of(context).colorScheme.surface,
          borderRadius: const BorderRadius.vertical(top: Radius.circular(20)),
        ),
        child: DetailedCompassDialog(
          initialPosition: _locationService.currentPosition,
          initialHeading: _currentHeading,
          contacts: contacts,
          sarMarkers: sarMarkers,
          preSelectedContact: selectedContact,
        ),
      ),
    );
  }

  void _showDetailedCompassWithSarMarker(
    BuildContext context,
    List<Contact> contacts,
    List<SarMarker> sarMarkers,
    SarMarker selectedMarker,
  ) {
    showModalBottomSheet(
      context: context,
      isScrollControlled: true,
      backgroundColor: Colors.transparent,
      builder: (context) => Container(
        height: MediaQuery.of(context).size.height * 0.9,
        decoration: BoxDecoration(
          color: Theme.of(context).colorScheme.surface,
          borderRadius: const BorderRadius.vertical(top: Radius.circular(20)),
        ),
        child: DetailedCompassDialog(
          initialPosition: _locationService.currentPosition,
          initialHeading: _currentHeading,
          contacts: contacts,
          sarMarkers: sarMarkers,
          preSelectedSarMarker: selectedMarker,
        ),
      ),
    );
  }

  void _restartLocationStream() {
    // Update distance threshold in location service
    _locationService.updateDistanceThreshold(_gpsUpdateDistance);

    // Update background tracking distance if active
    if (_backgroundTrackingEnabled) {
      _backgroundLocationService.updateDistanceThreshold(_gpsUpdateDistance);
    }
  }

  /// Restore background tracking state on app start
  Future<void> _restoreBackgroundTracking() async {
    if (_backgroundTrackingEnabled) {
      await _startBackgroundTracking();
    }
  }

  /// Start background location tracking
  Future<void> _startBackgroundTracking() async {
    final success = await _backgroundLocationService.startTracking(
      distanceThreshold: _gpsUpdateDistance,
    );

    if (!success) {
      if (mounted) {
        setState(() {
          _backgroundTrackingEnabled = false;
        });
        _saveSettings();

        ScaffoldMessenger.of(context).showSnackBar(
          SnackBar(
            content: Text(AppLocalizations.of(context)!.failedToStartBackgroundTracking),
            duration: Duration(seconds: 3),
          ),
        );
      }
    }
  }

  /// Stop background location tracking
  Future<void> _stopBackgroundTracking() async {
    await _backgroundLocationService.stopTracking();
  }

  /// Calculate distance between two points in meters
  double _calculateDistanceInMeters(double lat1, double lon1, double lat2, double lon2) {
    return _markerService.calculateDistance(
      lat1: lat1,
      lon1: lon1,
      lat2: lat2,
      lon2: lon2,
    );
  }

  /// Format distance for display
  String _formatDistance(double meters) {
    if (meters < 1000) {
      return '${meters.toStringAsFixed(1)} m';
    } else {
      return '${(meters / 1000).toStringAsFixed(2)} km';
    }
  }

  /// Show SAR dialog with pre-populated location from map long press
  void _showSarDialogWithLocation(LatLng location) {
    // Create a Position object from the LatLng coordinates
    final position = Position(
      latitude: location.latitude,
      longitude: location.longitude,
      timestamp: DateTime.now(),
      accuracy: 0.0, // Unknown accuracy for map-selected point
      altitude: 0.0,
      altitudeAccuracy: 0.0,
      heading: 0.0,
      headingAccuracy: 0.0,
      speed: 0.0,
      speedAccuracy: 0.0,
    );

    showModalBottomSheet(
      context: context,
      isScrollControlled: true,
      backgroundColor: Colors.transparent,
      builder: (context) => SarUpdateSheet(
        prePopulatedPosition: position,
        allowLocationUpdate: false, // Don't allow changing to current location
        onSend: (emoji, name, position, roomPublicKey, sendToChannel, colorIndex) async {
          await _sendSarMessage(emoji, name, position, roomPublicKey, sendToChannel, colorIndex);
        },
      ),
    );
  }

  Future<void> _sendSarMessage(
    String emoji,
    String name,
    Position position,
    Uint8List? roomPublicKey,
    bool sendToChannel,
    int colorIndex,
  ) async {
    final connectionProvider = context.read<ConnectionProvider>();
    final messagesProvider = context.read<MessagesProvider>();

    if (!connectionProvider.deviceInfo.isConnected) {
      if (!mounted) return;
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(
          content: Text(AppLocalizations.of(context)!.deviceNotConnected),
          backgroundColor: Colors.red,
        ),
      );
      return;
    }

    if (!sendToChannel && roomPublicKey == null) {
      if (!mounted) return;
      ScaffoldMessenger.of(context).showSnackBar(
        const SnackBar(
          content: Text('Please select a room to send SAR marker'),
          backgroundColor: Colors.red,
        ),
      );
      return;
    }

    try {
      // New format: S:<emoji>:<colorIndex>:<latitude>,<longitude>:<name>
      // Round coordinates to 5 decimal places (~1m accuracy) since most GPS is only that accurate
      final sarMessage = 'S:$emoji:$colorIndex:${position.latitude.toStringAsFixed(5)},${position.longitude.toStringAsFixed(5)}:$name';

      if (sendToChannel) {
        // Create message ID
        final messageId = '${DateTime.now().millisecondsSinceEpoch}_channel_sent';
        final timestamp = DateTime.now().millisecondsSinceEpoch ~/ 1000;

        // Get current device's public key (first 6 bytes)
        final devicePublicKey = connectionProvider.deviceInfo.publicKey;
        final senderPublicKeyPrefix = devicePublicKey?.sublist(0, 6);

        // Create sent message object
        final sentMessage = Message(
          id: messageId,
          messageType: MessageType.channel,
          senderPublicKeyPrefix: senderPublicKeyPrefix,
          pathLen: 0,
          textType: MessageTextType.plain,
          senderTimestamp: timestamp,
          text: sarMessage,
          receivedAt: DateTime.now(),
          deliveryStatus: MessageDeliveryStatus.sending,
          channelIdx: 0,
          // SAR marker data is automatically added by SarMessageParser.enhanceMessage in MessagesProvider
        );

        // Add to messages list with "sending" status
        messagesProvider.addSentMessage(sentMessage);

        // Send to public channel (ephemeral, over-the-air only)
        await connectionProvider.sendChannelMessage(
          channelIdx: 0,
          text: sarMessage,
          messageId: messageId,
        );

        if (!mounted) return;
        ScaffoldMessenger.of(context).showSnackBar(
          const SnackBar(
            content: Text('SAR marker broadcast to public channel'),
            backgroundColor: Colors.orange,
            duration: Duration(seconds: 2),
          ),
        );
      } else {
        // Create message ID
        final messageId = '${DateTime.now().millisecondsSinceEpoch}_sent';
        final timestamp = DateTime.now().millisecondsSinceEpoch ~/ 1000;

        // Get current device's public key (first 6 bytes)
        final devicePublicKey = connectionProvider.deviceInfo.publicKey;
        final senderPublicKeyPrefix = devicePublicKey?.sublist(0, 6);

        // Create sent message object with recipient public key for retry support
        final sentMessage = Message(
          id: messageId,
          messageType: MessageType.contact,
          senderPublicKeyPrefix: senderPublicKeyPrefix,
          pathLen: 0,
          textType: MessageTextType.plain,
          senderTimestamp: timestamp,
          text: sarMessage,
          receivedAt: DateTime.now(),
          deliveryStatus: MessageDeliveryStatus.sending,
          recipientPublicKey: roomPublicKey, // Store recipient for retry
          // SAR marker data is automatically added by SarMessageParser.enhanceMessage in MessagesProvider
        );

        // Add to messages list with "sending" status
        messagesProvider.addSentMessage(sentMessage);

        // Look up the room contact for path logging
        final contactsProvider = context.read<ContactsProvider>();
        final roomContact = contactsProvider.contacts.where((c) {
          return c.publicKey.length >= roomPublicKey!.length &&
              _publicKeysMatch(c.publicKey, roomPublicKey);
        }).firstOrNull;

        // Send SAR message to selected room (persisted and immutable)
        final sentSuccessfully = await connectionProvider.sendTextMessage(
          contactPublicKey: roomPublicKey!,
          text: sarMessage,
          messageId: messageId, // Pass message ID so it can be tracked
          contact: roomContact, // Include contact for path status logging
        );

        if (!sentSuccessfully) {
          // Mark message as failed if sending failed
          messagesProvider.markMessageFailed(messageId);
        }

        if (!mounted) return;
        ScaffoldMessenger.of(context).showSnackBar(
          const SnackBar(
            content: Text('SAR marker sent to room'),
            backgroundColor: Colors.green,
            duration: Duration(seconds: 2),
          ),
        );
      }
    } catch (e) {
      if (!mounted) return;
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(
          content: Text('Failed to send SAR marker: $e'),
          backgroundColor: Colors.red,
        ),
      );
    }
  }

  @override
  Widget build(BuildContext context) {
    super.build(context); // Required for AutomaticKeepAliveClientMixin
    final appProvider = context.watch<AppProvider>();
    final isSimpleMode = appProvider.isSimpleMode;

    return Consumer3<ContactsProvider, MessagesProvider, DrawingProvider>(
      builder: (context, contactsProvider, messagesProvider, drawingProvider, child) {
        final contactsWithLocation = contactsProvider.contactsWithLocation;
        // Filter SAR markers based on visibility toggle
        final allSarMarkers = messagesProvider.sarMarkers;
        final sarMarkers = drawingProvider.showSarMarkers
            ? allSarMarkers
            : <SarMarker>[];
        final center = _calculateCenter(contactsWithLocation, sarMarkers);

        return Stack(
          children: [
            // Map widget
            _isInitialized
                ? Listener(
                    onPointerMove: (PointerMoveEvent event) {
                      // Track pointer movement for mobile drag (onPointerHover doesn't work on mobile)
                      if (_isDraggingPin) {
                        final latLng = _mapController.camera.screenOffsetToLatLng(event.localPosition);
                        setState(() {
                          _droppedPinLocation = latLng;
                        });
                      }
                    },
                    child: FlutterMap(
                    mapController: _mapController,
                    options: MapOptions(
                      // Use the layer's CRS if it has one (for WMS layers), otherwise default to EPSG:3857
                      crs: _currentLayer.crs ?? const Epsg3857(),
                      // Use saved position if available, otherwise use calculated center
                      initialCenter: _savedMapCenter ?? center,
                      initialZoom: _savedMapZoom ?? _defaultZoom,
                      minZoom: 0, // Allow full zoom out to see world view
                      maxZoom: _currentLayer.maxZoom, // Respect current layer's maximum
                      interactionOptions: InteractionOptions(
                        flags: _isDraggingPin
                            ? InteractiveFlag.none // Disable map interaction while dragging pin
                            : InteractiveFlag.all,
                      ),
                      onMapEvent: (event) {
                        // Save map position when user stops panning/zooming
                        if (event is MapEventMoveEnd || event is MapEventScrollWheelZoom) {
                          _saveMapPosition();
                        }
                        // Trigger rebuild on rotation change to show/hide reset button
                        if (event is MapEventRotateEnd || event is MapEventRotateStart) {
                          setState(() {});
                        }
                      },
                      onLongPress: (tapPosition, point) {
                        // Handle measurement mode - set measurement points only, no SAR marker
                        if (drawingProvider.drawingMode == DrawingMode.measure) {
                          if (drawingProvider.measurementPoint1 == null) {
                            // Set first measurement point
                            drawingProvider.setMeasurementPoint1(point);
                          } else if (drawingProvider.measurementPoint2 == null) {
                            // Set second measurement point
                            drawingProvider.setMeasurementPoint2(point);
                          } else {
                            // Clear and start new measurement
                            drawingProvider.clearMeasurement();
                            drawingProvider.setMeasurementPoint1(point);
                          }
                          // Don't drop SAR marker pin in measurement mode
                          return;
                        }

                        // Skip if in other drawing modes
                        if (drawingProvider.isDrawing) return;

                        // Drop a pin at long press location for SAR marker creation
                        if (_droppedPinLocation == null) {
                          setState(() {
                            _droppedPinLocation = point;
                          });
                        }
                      },
                      onPointerDown: (event, point) {
                        // Check if pointer is near the pin to start dragging
                        if (_droppedPinLocation != null) {
                          final distance = _calculateDistanceInMeters(
                            _droppedPinLocation!.latitude,
                            _droppedPinLocation!.longitude,
                            point.latitude,
                            point.longitude,
                          );
                          // If within ~50m of pin, start dragging
                          if (distance <= 50) {
                            setState(() {
                              _isDraggingPin = true;
                            });
                          }
                        }
                      },
                      onPointerHover: (event, point) {
                        // Update rectangle preview while dragging
                        if (drawingProvider.drawingMode == DrawingMode.rectangle &&
                            drawingProvider.rectangleStartPoint != null) {
                          drawingProvider.updateRectangleEndPoint(point);
                          return;
                        }

                        // Update pin location while dragging
                        if (_isDraggingPin) {
                          setState(() {
                            _droppedPinLocation = point;
                          });
                        }
                      },
                      onPointerUp: (event, point) {
                        // Stop dragging on pointer release
                        if (_isDraggingPin) {
                          setState(() {
                            _isDraggingPin = false;
                          });
                        }
                      },
                      onTap: (tapPosition, point) {
                        // Handle drawing mode taps
                        if (drawingProvider.drawingMode == DrawingMode.line) {
                          if (drawingProvider.currentLinePoints.isEmpty) {
                            // Start new line
                            drawingProvider.startLine(point);
                          } else {
                            // Add point to current line
                            drawingProvider.addLinePoint(point);
                          }
                          return;
                        } else if (drawingProvider.drawingMode == DrawingMode.rectangle) {
                          if (drawingProvider.rectangleStartPoint == null) {
                            // Start rectangle
                            drawingProvider.startRectangle(point);
                          } else {
                            // Complete rectangle
                            drawingProvider.completeRectangle(point);
                          }
                          return;
                        }

                        // Clear dropped pin if tapping elsewhere (not on the pin itself)
                        if (_droppedPinLocation != null && !_isDraggingPin) {
                          // Check if tap is far from the pin
                          final distance = _calculateDistanceInMeters(
                            _droppedPinLocation!.latitude,
                            _droppedPinLocation!.longitude,
                            point.latitude,
                            point.longitude,
                          );
                          // If tap is more than ~50m away, clear pin
                          if (distance > 50) {
                            setState(() {
                              _droppedPinLocation = null;
                            });
                          }
                        }
                      },
                    ),
                    children: [
                      // Render vector or raster tile layer based on layer type
                      if (_currentLayer.isVector && _vectorTheme != null)
                        VectorTileLayer(
                          theme: _vectorTheme!,
                          tileProviders: TileProviders({
                            _currentLayer.sourceName ?? 'default':
                              _tileCache.getVectorTileProvider(_currentLayer)!,
                          }),
                          maximumZoom: _currentLayer.maxZoom,
                        )
                      else if (_currentLayer.isWms && _currentLayer.wmsBaseUrl != null && _currentLayer.crs != null)
                        // WMS Base Layer (e.g., Slovenian Aerial Imagery)
                        flutter_map.TileLayer(
                          wmsOptions: WMSTileLayerOptions(
                            baseUrl: _currentLayer.wmsBaseUrl!,
                            layers: _currentLayer.wmsLayers ?? [],
                            styles: _currentLayer.wmsStyles ?? [],
                            format: _currentLayer.wmsFormat ?? 'image/jpeg',
                            transparent: _currentLayer.wmsTransparent ?? false,
                            crs: _currentLayer.crs!,
                          ),
                          // Use cached tile provider for offline support
                          tileProvider: _tileCache.getTileProviderForWms(_currentLayer),
                          userAgentPackageName: 'com.meshcore.sar',
                          maxZoom: _currentLayer.maxZoom,
                          errorTileCallback: (tile, error, stackTrace) {
                            debugPrint('🔴 WMS Base Layer tile error at ${tile.coordinates}: $error');
                          },
                        )
                      else if (!_currentLayer.isVector && !_currentLayer.isWms)
                        flutter_map.TileLayer(
                          urlTemplate: _currentLayer.urlTemplate,
                          tileProvider: _tileCache.getTileProvider(_currentLayer),
                          userAgentPackageName: 'com.meshcore.sar',
                          maxZoom: _currentLayer.maxZoom,
                        ),
                      // WMS Overlays (rendered after base layer, before polylines)
                      // Note: These overlays only work with EPSG:3794 CRS (Slovenian coordinate system)
                      // Cadastral parcels overlay
                      Consumer<MapProvider>(
                        builder: (context, mapProvider, _) {
                          // Only show if enabled and map is using Slovenian CRS
                          if (!mapProvider.showCadastralOverlay || _currentLayer.crs == null) {
                            return const SizedBox.shrink();
                          }
                          return flutter_map.TileLayer(
                            wmsOptions: WMSTileLayerOptions(
                              baseUrl: 'https://prostor.zgs.gov.si/geowebcache/service/wms?',
                              layers: const ['pregledovalnik:kn_parcele'],
                              styles: const ['parcele'],
                              format: 'image/png',
                              transparent: true,
                              crs: slovenianCrs,
                            ),
                            tileProvider: _tileCache.getTileProviderForWms(
                              MapLayer(
                                type: MapLayerType.wmsBase,
                                name: 'Cadastral Parcels',
                                urlTemplate: '',
                                attribution: '© GURS',
                                maxZoom: 19,
                                isWms: true,
                                wmsBaseUrl: 'https://prostor.zgs.gov.si/geowebcache/service/wms?',
                                wmsLayers: const ['pregledovalnik:kn_parcele'],
                                wmsFormat: 'image/png',
                                crs: slovenianCrs,
                              ),
                            ),
                            userAgentPackageName: 'com.meshcore.sar',
                            maxZoom: 19,
                            errorTileCallback: (tile, error, stackTrace) {
                              debugPrint('🔴 Cadastral overlay tile error at ${tile.coordinates}: $error');
                              if (stackTrace != null) {
                                debugPrint('   StackTrace: $stackTrace');
                              }
                            },
                          );
                        },
                      ),
                      // Forest roads overlay
                      Consumer<MapProvider>(
                        builder: (context, mapProvider, _) {
                          // Only show if enabled and map is using Slovenian CRS
                          if (!mapProvider.showForestRoadsOverlay || _currentLayer.crs == null) {
                            return const SizedBox.shrink();
                          }
                          return flutter_map.TileLayer(
                            wmsOptions: WMSTileLayerOptions(
                              baseUrl: 'https://prostor.zgs.gov.si/geoserver/wms?',
                              layers: const ['pregledovalnik:gozdne_ceste'],
                              styles: const ['gozdne_ceste'],
                              format: 'image/png',
                              transparent: true,
                              crs: slovenianCrs,
                            ),
                            tileProvider: _tileCache.getTileProviderForWms(
                              MapLayer(
                                type: MapLayerType.wmsBase,
                                name: 'Forest Roads',
                                urlTemplate: '',
                                attribution: '© GURS',
                                maxZoom: 19,
                                isWms: true,
                                wmsBaseUrl: 'https://prostor.zgs.gov.si/geoserver/wms?',
                                wmsLayers: const ['pregledovalnik:gozdne_ceste'],
                                wmsFormat: 'image/png',
                                crs: slovenianCrs,
                              ),
                            ),
                            userAgentPackageName: 'com.meshcore.sar',
                            maxZoom: 19,
                            errorTileCallback: (tile, error, stackTrace) {
                              debugPrint('🔴 Forest roads overlay tile error at ${tile.coordinates}: $error');
                              if (stackTrace != null) {
                                debugPrint('   StackTrace: $stackTrace');
                              }
                            },
                          );
                        },
                      ),
                      // Imported trail layer (rendered at bottom for reference)
                      Consumer<MapProvider>(
                        builder: (context, mapProvider, _) {
                          if (mapProvider.importedTrail == null ||
                              mapProvider.importedTrail!.points.length < 2) {
                            return const SizedBox.shrink();
                          }

                          return PolylineLayer(
                            polylines: [
                              Polyline(
                                points: mapProvider.importedTrail!.latLngPoints,
                                color: Colors.green.withValues(alpha: 0.7),
                                strokeWidth: 3.0,
                                borderColor: Colors.white.withValues(alpha: 0.4),
                                borderStrokeWidth: 1.0,
                                // DOTTED pattern to distinguish from other trails
                                pattern: StrokePattern.dotted(spacingFactor: 2),
                              ),
                            ],
                          );
                        },
                      ),
                      // Contact trail polylines (rendered before user trail and markers)
                      Consumer<MapProvider>(
                        builder: (context, mapProvider, _) {
                          // Determine which contacts to show trails for
                          final contactsToShow = mapProvider.showAllContactTrails
                              ? contactsWithLocation // Show all when master toggle is ON
                              : contactsWithLocation.where((contact) =>
                                  mapProvider.isContactPathVisible(contact.publicKeyHex)); // Individual toggles

                          return PolylineLayer(
                            polylines: contactsToShow
                                .where((contact) => contact.advertHistory.length >= 2)
                                .map((contact) {
                                  // Use TrailColorService for consistent, emoji-based colors
                                  final color = TrailColorService.getTrailColor(contact);

                                  return Polyline(
                                    points: contact.advertHistory
                                        .map((advert) => advert.location)
                                        .toList(),
                                    color: color,
                                    strokeWidth: 2.5, // Thinner than user trail
                                    borderColor: Colors.white.withValues(alpha: 0.3),
                                    borderStrokeWidth: 1.0,
                                    // DASHED pattern to distinguish from solid user trail
                                    pattern: StrokePattern.dashed(segments: [8, 4]),
                                  );
                                })
                                .toList(),
                          );
                        },
                      ),
                      // Location trail layer (rendered after paths, before drawings)
                      const LocationTrailLayer(),
                      // Measurement line layer (rendered before drawings)
                      if (drawingProvider.measurementPoint1 != null && drawingProvider.measurementPoint2 != null)
                        PolylineLayer(
                          polylines: [
                            Polyline(
                              points: [
                                drawingProvider.measurementPoint1!,
                                drawingProvider.measurementPoint2!,
                              ],
                              color: Colors.yellow.withValues(alpha: 0.8),
                              strokeWidth: 3.0,
                              borderColor: Colors.black.withValues(alpha: 0.5),
                              borderStrokeWidth: 1.0,
                              pattern: StrokePattern.dashed(segments: [10, 5]),
                            ),
                          ],
                        ),
                      // Drawing layer (rendered after paths, before markers)
                      DrawingLayer(
                        drawings: drawingProvider.drawings,
                        previewDrawing: drawingProvider.getPreviewDrawing(),
                        isSimpleMode: isSimpleMode,
                      ),
                      MarkerLayer(
                        markers: [
                          // Contact markers
                          ..._markerService.generateContactMarkers(
                            contacts: contactsWithLocation,
                            context: context,
                            mapRotation: _getMapRotation(),
                            userPosition: _locationService.currentPosition,
                            onTap: (contact) {
                              _showDetailedCompassWithContact(
                                context,
                                contactsProvider.contactsWithLocation,
                                messagesProvider.sarMarkers,
                                contact,
                              );
                            },
                          ),
                          // SAR markers
                          ..._markerService.generateSarMarkers(
                            sarMarkers: sarMarkers,
                            context: context,
                            mapRotation: _getMapRotation(),
                            onTap: (marker) {
                              // Navigate to the corresponding message in Messages tab
                              messagesProvider.navigateToMessage(marker.id);
                              widget.onNavigateToMessages?.call();
                            },
                          ),
                          // User location marker with directional pointer
                          if (_markerService.generateUserLocationMarker(
                            position: _locationService.currentPosition,
                            heading: _currentHeading,
                            context: context,
                          ) != null)
                            _markerService.generateUserLocationMarker(
                              position: _locationService.currentPosition,
                              heading: _currentHeading,
                              context: context,
                            )!,
                          // Measurement point 1 marker
                          if (drawingProvider.measurementPoint1 != null)
                            Marker(
                              point: drawingProvider.measurementPoint1!,
                              width: 60,
                              height: 80,
                              rotate: false,
                              child: Column(
                                mainAxisSize: MainAxisSize.min,
                                children: [
                                  Container(
                                    padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 2),
                                    decoration: BoxDecoration(
                                      color: Colors.yellow.shade700,
                                      borderRadius: BorderRadius.circular(4),
                                    ),
                                    child: const Text(
                                      'Start',
                                      style: TextStyle(
                                        color: Colors.white,
                                        fontSize: 10,
                                        fontWeight: FontWeight.bold,
                                      ),
                                    ),
                                  ),
                                  const SizedBox(height: 2),
                                  Container(
                                    decoration: BoxDecoration(
                                      color: Colors.yellow,
                                      shape: BoxShape.circle,
                                      border: Border.all(color: Colors.white, width: 2),
                                      boxShadow: const [
                                        BoxShadow(
                                          color: Colors.black26,
                                          blurRadius: 4,
                                          offset: Offset(0, 2),
                                        ),
                                      ],
                                    ),
                                    padding: const EdgeInsets.all(6),
                                    child: const Icon(
                                      Icons.location_on,
                                      color: Colors.white,
                                      size: 18,
                                    ),
                                  ),
                                ],
                              ),
                            ),
                          // Measurement point 2 marker
                          if (drawingProvider.measurementPoint2 != null)
                            Marker(
                              point: drawingProvider.measurementPoint2!,
                              width: 60,
                              height: 80,
                              rotate: false,
                              child: Column(
                                mainAxisSize: MainAxisSize.min,
                                children: [
                                  Container(
                                    padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 2),
                                    decoration: BoxDecoration(
                                      color: Colors.yellow.shade700,
                                      borderRadius: BorderRadius.circular(4),
                                    ),
                                    child: const Text(
                                      'End',
                                      style: TextStyle(
                                        color: Colors.white,
                                        fontSize: 10,
                                        fontWeight: FontWeight.bold,
                                      ),
                                    ),
                                  ),
                                  const SizedBox(height: 2),
                                  Container(
                                    decoration: BoxDecoration(
                                      color: Colors.yellow,
                                      shape: BoxShape.circle,
                                      border: Border.all(color: Colors.white, width: 2),
                                      boxShadow: const [
                                        BoxShadow(
                                          color: Colors.black26,
                                          blurRadius: 4,
                                          offset: Offset(0, 2),
                                        ),
                                      ],
                                    ),
                                    padding: const EdgeInsets.all(6),
                                    child: const Icon(
                                      Icons.location_on,
                                      color: Colors.white,
                                      size: 18,
                                    ),
                                  ),
                                ],
                              ),
                            ),
                          // Dropped pin marker with label
                          if (_droppedPinLocation != null)
                            Marker(
                              key: _pinMarkerKey,
                              point: _droppedPinLocation!,
                              width: 200,
                              height: 100,
                              rotate: false,
                              child: GestureDetector(
                                onTap: () {
                                  // Only open dialog if not dragging
                                  if (!_isDraggingPin) {
                                    _showSarDialogWithLocation(_droppedPinLocation!);
                                    // Clear the pin after opening dialog
                                    setState(() {
                                      _droppedPinLocation = null;
                                    });
                                  }
                                },
                                child: Opacity(
                                  // Make pin slightly transparent while dragging
                                  opacity: _isDraggingPin ? 0.7 : 1.0,
                                  child: Column(
                                    mainAxisSize: MainAxisSize.min,
                                    children: [
                                      // Label
                                      Container(
                                        padding: const EdgeInsets.symmetric(
                                          horizontal: 12,
                                          vertical: 6,
                                        ),
                                        decoration: BoxDecoration(
                                          color: _isDraggingPin ? Colors.orange : Colors.red,
                                          borderRadius: BorderRadius.circular(8),
                                          boxShadow: [
                                            BoxShadow(
                                              color: Colors.black.withValues(alpha: 0.3),
                                              blurRadius: 4,
                                              offset: const Offset(0, 2),
                                            ),
                                          ],
                                        ),
                                        child: Text(
                                          _isDraggingPin ? AppLocalizations.of(context)!.dragToPosition : AppLocalizations.of(context)!.createSarMarker,
                                          style: const TextStyle(
                                            color: Colors.white,
                                            fontSize: 12,
                                            fontWeight: FontWeight.bold,
                                          ),
                                        ),
                                      ),
                                      const SizedBox(height: 4),
                                      // Pin icon pointing down
                                      Icon(
                                        Icons.location_pin,
                                        color: _isDraggingPin ? Colors.orange : Colors.red,
                                        size: 48,
                                        shadows: const [
                                          Shadow(
                                            color: Colors.black26,
                                            blurRadius: 4,
                                            offset: Offset(0, 2),
                                          ),
                                        ],
                                      ),
                                    ],
                                  ),
                                ),
                              ),
                            ),
                        ],
                      ),
                      // Drawing markers layer (delete buttons on drawings, only shown when in drawing mode)
                      DrawingMarkersLayer(
                        drawings: drawingProvider.drawings,
                        showDeleteButtons: drawingProvider.isDrawing,
                        isSimpleMode: isSimpleMode,
                        onDeleteDrawing: (drawingId) {
                          drawingProvider.removeDrawing(drawingId);
                        },
                        onTapDrawing: (drawing) {
                          // Navigate to the corresponding message in Messages tab
                          if (drawing.messageId != null) {
                            messagesProvider.navigateToMessage(drawing.messageId!);
                            widget.onNavigateToMessages?.call();
                          }
                        },
                      ),
                      // Download area selection polygon (rendered on top when in selection mode)
                      Consumer<MapProvider>(
                        builder: (context, mapProvider, _) {
                          if (!mapProvider.isSelectingDownloadArea || mapProvider.downloadAreaBounds == null) {
                            return const SizedBox.shrink();
                          }
                          final bounds = mapProvider.downloadAreaBounds!;

                          // Add padding to the bounds so the rectangle is visible within the screen
                          // Calculate 5% padding on each side
                          final latPadding = (bounds.north - bounds.south) * 0.05;
                          final lonPadding = (bounds.east - bounds.west) * 0.05;

                          return PolygonLayer(
                            polygons: [
                              Polygon(
                                points: [
                                  LatLng(bounds.north - latPadding, bounds.west + lonPadding), // Top-left
                                  LatLng(bounds.north - latPadding, bounds.east - lonPadding), // Top-right
                                  LatLng(bounds.south + latPadding, bounds.east - lonPadding), // Bottom-right
                                  LatLng(bounds.south + latPadding, bounds.west + lonPadding), // Bottom-left
                                ],
                                color: Colors.blue.withValues(alpha: 0.2),
                                borderColor: Colors.blue,
                                borderStrokeWidth: 3.0,
                              ),
                            ],
                          );
                        },
                      ),
                    ],
                  ),
                )
                : Center(
                    child: Column(
                      mainAxisAlignment: MainAxisAlignment.center,
                      children: [
                        const CircularProgressIndicator(),
                        const SizedBox(height: 16),
                        Text(
                          AppLocalizations.of(context)!.initializingMap,
                          style: Theme.of(context).textTheme.bodyMedium,
                        ),
                      ],
                    ),
                  ),
            // Download area overlay (shown when in download area selection mode)
            Consumer<MapProvider>(
              builder: (context, mapProvider, _) {
                if (!mapProvider.isSelectingDownloadArea || mapProvider.downloadAreaBounds == null) {
                  return const SizedBox.shrink();
                }
                return DownloadAreaOverlay(
                  bounds: mapProvider.downloadAreaBounds!,
                  onConfirm: () {
                    // Navigate to map management screen with selected bounds
                    final bounds = mapProvider.downloadAreaBounds!;
                    final zoom = _mapController.camera.zoom.round();

                    // Find matching layer from MapLayer.allLayers to avoid instance mismatch
                    // Only pass initialLayer if it's in allLayers (standard layers only)
                    MapLayer? initialLayer;
                    try {
                      initialLayer = MapLayer.allLayers.firstWhere(
                        (layer) => layer.type == _currentLayer.type,
                      );
                    } catch (e) {
                      // Current layer not in allLayers (WMS/vector), don't pass it
                      initialLayer = null;
                    }

                    Navigator.of(context).push(
                      MaterialPageRoute(
                        builder: (context) => MapManagementScreen(
                          tileCacheService: _tileCache,
                          initialBounds: bounds,
                          initialLayer: initialLayer,
                          initialZoom: zoom,
                        ),
                      ),
                    );

                    // Exit download area selection mode
                    mapProvider.exitDownloadAreaMode();
                  },
                  onCancel: () {
                    // Exit download area selection mode
                    mapProvider.exitDownloadAreaMode();
                  },
                );
              },
            ),
            // Exit fullscreen button - top left (only shown in fullscreen mode)
            if (_isFullscreen)
              Positioned(
                top: 60,
                left: 16,
                child: FloatingActionButton.small(
                  heroTag: 'exit_fullscreen',
                  onPressed: () {
                    setState(() {
                      _isFullscreen = false;
                    });
                    _saveSettings();
                    // Notify parent about fullscreen change
                    widget.onFullscreenChanged?.call(false);
                  },
                  backgroundColor: Theme.of(context).colorScheme.surface.withValues(alpha: 0.9),
                  child: const Icon(Icons.fullscreen_exit),
                ),
              ),
            // Message overlay - right side (only shown in fullscreen mode on large screens)
            if (_isFullscreen && MediaQuery.of(context).size.width >= 800)
              Positioned(
                top: 60,
                bottom: 60,
                right: 16,
                width: 300,
                child: Consumer<MessagesProvider>(
                  builder: (context, messagesProvider, _) {
                    // Get last 20 non-system and non-drawing messages, sorted chronologically
                    final recentMessages = messagesProvider.messages
                        .where((m) => !m.isSystemMessage && !m.isDrawing)
                        .toList()
                      ..sort((a, b) => a.sentAt.compareTo(b.sentAt));
                    final displayMessages = recentMessages.length > 20
                        ? recentMessages.sublist(recentMessages.length - 20)
                        : recentMessages;

                    return MapMessageOverlay(
                      messages: displayMessages,
                      onNavigateToMessages: widget.onNavigateToMessages,
                      onMessageTap: (messageId) {
                        messagesProvider.navigateToMessage(messageId);
                        widget.onNavigateToMessages?.call();
                      },
                    );
                  },
                ),
              ),
            // Compass widget - top right (hidden in fullscreen mode)
            if (!_isFullscreen)
              Positioned(
                top: 16,
                right: 16,
                child: GestureDetector(
                  onTap: () => _showDetailedCompass(
                    context,
                    contactsProvider.contactsWithLocation,
                    messagesProvider.sarMarkers,
                  ),
                  child: CompassWidget(
                    heading: _currentHeading ?? 0,
                    hasHeading: _currentHeading != null,
                  ),
                ),
              ),
            // Map legend overlay (hidden in fullscreen mode)
            if (_showLegend && !_isFullscreen)
              Positioned(
                top: 80, // Position below compass
                left: 16,
                child: MapLegend(
                  teamMemberCount: contactsWithLocation.length,
                  foundPersonCount: messagesProvider.foundPersonMarkers.length,
                  fireCount: messagesProvider.fireMarkers.length,
                  stagingAreaCount: messagesProvider.stagingAreaMarkers.length,
                  objectCount: messagesProvider.objectMarkers.length,
                ),
              ),
            // Measurement distance overlay
            if (drawingProvider.drawingMode == DrawingMode.measure)
              Positioned(
                top: 16,
                left: 16,
                child: Container(
                  padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
                  decoration: BoxDecoration(
                    color: Colors.yellow.shade700.withValues(alpha: 0.95),
                    borderRadius: BorderRadius.circular(12),
                    boxShadow: [
                      BoxShadow(
                        color: Colors.black.withValues(alpha: 0.3),
                        blurRadius: 8,
                        offset: const Offset(0, 2),
                      ),
                    ],
                  ),
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    mainAxisSize: MainAxisSize.min,
                    children: [
                      Row(
                        mainAxisSize: MainAxisSize.min,
                        children: [
                          const Icon(
                            Icons.straighten,
                            color: Colors.white,
                            size: 20,
                          ),
                          const SizedBox(width: 8),
                          Text(
                            AppLocalizations.of(context)!.measureDistance,
                            style: const TextStyle(
                              color: Colors.white,
                              fontSize: 14,
                              fontWeight: FontWeight.bold,
                            ),
                          ),
                        ],
                      ),
                      const SizedBox(height: 8),
                      if (drawingProvider.measuredDistance != null)
                        Column(
                          crossAxisAlignment: CrossAxisAlignment.start,
                          children: [
                            Text(
                              AppLocalizations.of(context)!.distanceLabel(_formatDistance(drawingProvider.measuredDistance!)),
                              style: const TextStyle(
                                color: Colors.white,
                                fontSize: 16,
                                fontWeight: FontWeight.bold,
                              ),
                            ),
                            const SizedBox(height: 4),
                            Text(
                              AppLocalizations.of(context)!.longPressToStartNewMeasurement,
                              style: const TextStyle(
                                color: Colors.white70,
                                fontSize: 10,
                              ),
                            ),
                          ],
                        )
                      else if (drawingProvider.measurementPoint1 != null)
                        Text(
                          AppLocalizations.of(context)!.longPressForSecondPoint,
                          style: const TextStyle(
                            color: Colors.white,
                            fontSize: 12,
                          ),
                        )
                      else
                        Text(
                          AppLocalizations.of(context)!.longPressToStartMeasurement,
                          style: const TextStyle(
                            color: Colors.white,
                            fontSize: 12,
                          ),
                        ),
                    ],
                  ),
                ),
              ),
            // Map controls - right side (hidden in fullscreen mode)
            if (!_isFullscreen)
              Positioned(
                bottom: 16,
                right: 16,
                child: Column(
                  children: [
                    // Drawing toolbar (hidden in simple mode)
                    Consumer<AppProvider>(
                      builder: (context, appProvider, _) {
                        if (appProvider.isSimpleMode) {
                          return const SizedBox.shrink();
                        }
                        return const DrawingToolbar();
                      },
                    ),
                    // In simple mode: show ruler FAB directly
                    Consumer<AppProvider>(
                      builder: (context, appProvider, _) {
                        if (!appProvider.isSimpleMode) {
                          return const SizedBox.shrink();
                        }
                        // Show ruler button
                        return Column(
                          children: [
                            FloatingActionButton.small(
                              heroTag: 'ruler_tool',
                              backgroundColor: drawingProvider.drawingMode == DrawingMode.measure
                                  ? Theme.of(context).colorScheme.primary
                                  : null,
                              onPressed: () {
                                if (drawingProvider.drawingMode == DrawingMode.measure) {
                                  // Exit measurement mode
                                  drawingProvider.exitDrawingMode();
                                } else {
                                  // Enter measurement mode
                                  drawingProvider.setDrawingMode(DrawingMode.measure);
                                }
                              },
                              child: Icon(
                                Icons.straighten,
                                color: drawingProvider.drawingMode == DrawingMode.measure
                                    ? Colors.white
                                    : null,
                              ),
                            ),
                            if (!drawingProvider.isDrawing)
                              const SizedBox(height: 8),
                          ],
                        );
                      },
                    ),
                    // Hide other buttons when in drawing mode
                    if (!drawingProvider.isDrawing) ...[
                      FloatingActionButton.small(
                      heroTag: 'center_map',
                      onPressed: !_isMapReady ? null : () async {
                        // First tap: reset rotation if not 0
                        // Second tap (or if rotation is 0): jump to current location
                        if (_getMapRotation() != 0) {
                          _resetMapRotation();
                          return;
                        }

                        // Get current zoom to retain it
                        final currentZoom = _mapController.camera.zoom;

                        // Force update GPS location and jump to it
                        final position = await _locationService.getCurrentPosition();
                        if (position != null && mounted) {
                          setState(() {
                            // Position updated in service
                          });
                          _mapController.move(
                            LatLng(position.latitude, position.longitude),
                            currentZoom,
                          );
                        } else {
                          // Fallback to cached position or default center
                          final currentPosition = _locationService.currentPosition;
                          if (currentPosition != null) {
                            _mapController.move(
                              LatLng(
                                currentPosition.latitude,
                                currentPosition.longitude,
                              ),
                              currentZoom,
                            );
                          } else {
                            _mapController.move(center, currentZoom);
                          }
                        }
                      },
                      child: const Icon(Icons.my_location),
                    ),
                    const SizedBox(height: 8),
                    // Trail controls button
                    const TrailControls(),
                    const SizedBox(height: 8),
                    FloatingActionButton.small(
                      heroTag: 'layer_selector',
                      onPressed: () => _showLayerSelector(context),
                      child: const Icon(Icons.layers),
                    ),
                    const SizedBox(height: 8),
                    // In simple mode: show fullscreen button directly
                    // In normal mode: show options menu (which includes fullscreen)
                    if (context.watch<AppProvider>().isSimpleMode)
                      FloatingActionButton.small(
                        heroTag: 'fullscreen_toggle',
                        onPressed: () {
                          setState(() {
                            _isFullscreen = !_isFullscreen;
                          });
                          _saveSettings();
                          widget.onFullscreenChanged?.call(_isFullscreen);
                        },
                        child: Icon(_isFullscreen ? Icons.fullscreen_exit : Icons.fullscreen),
                      )
                    else
                      FloatingActionButton.small(
                        heroTag: 'options_menu',
                        onPressed: () => _showOptionsMenu(context),
                        child: const Icon(Icons.more_vert),
                      ),
                    ],
                  ],
                ),
              ),
            // Map debug info - bottom left (hidden in fullscreen mode)
            if (_showMapDebugInfo && _isMapReady && !_isFullscreen)
              Positioned(
                bottom: 16,
                left: 16,
                child: MapDebugInfo(mapController: _mapController),
              ),
          ],
        );
      },
    );
  }
}