import 'package:equatable/equatable.dart';
import 'package:intaleq_maps/intaleq_maps.dart';
import '../../../data/models/route_model.dart';
import '../../../data/models/place_model.dart';

enum NavigationStatus {
  initial,
  loading,
  mapReady,
  routePreview,
  navigating,
  arrived,
  error,
}

enum MapThemeType {
  vectorLight,
  vectorDark,
  satellite,
}

class NavigationState extends Equatable {
  final NavigationStatus status;
  final LatLng? myLocation;
  final double altitude; // Altitude AMSL in meters (defaults to 0.0)
  final double heading;
  final double speed;
  final List<RouteData> routes;
  final int selectedRouteIndex;
  final LatLng? destination;
  final String destinationTitle;
  final String originTitle;
  final List<Map<String, dynamic>> routeSteps;
  final int currentStepIndex;
  final String currentInstruction;
  final String nextInstruction;
  final double distanceToNextStep;
  final double remainingDistance;
  final double remainingDuration;
  final int currentManeuverModifier;
  final String arrivalTime;
  final bool isMuted;
  final bool isCameraLocked;
  final MapThemeType mapTheme;
  final Set<Marker> markers;
  final Set<Polyline> polylines;
  final List<PlaceModel> searchResults;
  final bool isSelectingLocationOnMap;
  final String? activePickerMode;
  final LatLng? pickedLocation;
  final bool isOnline;
  final String? errorMessage;
  final int selectedVehicleColor;
  final String selectedVehicleStyle;
  final double vehicleScale;
  final List<String> recentSearches;
  final bool isSearching;
  final bool isOrbiting;
  final double orbitSpeed;
  final bool isSunPlaying;
  final int sunTimeMinutes;
  final double terrainExaggeration;
  final double cameraTilt;
  final bool showBuildings;
  final bool showContours;
  final bool showHillshading;
  final bool isTouristModeEnabled;
  final String? selectedLandmarkId;

  const NavigationState({
    this.status = NavigationStatus.initial,
    this.myLocation,
    this.altitude = 0.0,
    this.heading = 0.0,
    this.speed = 0.0,
    this.routes = const [],
    this.selectedRouteIndex = 0,
    this.destination,
    this.destinationTitle = '',
    this.originTitle = 'موقعي الحالي',
    this.routeSteps = const [],
    this.currentStepIndex = 0,
    this.currentInstruction = '',
    this.nextInstruction = '',
    this.distanceToNextStep = 0.0,
    this.remainingDistance = 0.0,
    this.remainingDuration = 0.0,
    this.currentManeuverModifier = 0,
    this.arrivalTime = '--:--',
    this.isMuted = false,
    this.isCameraLocked = true,
    this.mapTheme = MapThemeType.vectorLight,
    this.markers = const {},
    this.polylines = const {},
    this.searchResults = const [],
    this.isSelectingLocationOnMap = false,
    this.activePickerMode,
    this.pickedLocation,
    this.isOnline = true,
    this.errorMessage,
    this.selectedVehicleColor = 0xFF007AFF,
    this.selectedVehicleStyle = 'car',
    this.vehicleScale = 1.8,
    this.recentSearches = const [],
    this.isSearching = false,
    this.isOrbiting = false,
    this.orbitSpeed = 1.0,
    this.isSunPlaying = false,
    this.sunTimeMinutes = 1110,
    this.terrainExaggeration = 2.0,
    this.cameraTilt = 55.0,
    this.showBuildings = true,
    this.showContours = true,
    this.showHillshading = true,
    this.isTouristModeEnabled = false,
    this.selectedLandmarkId,
  });

  RouteData? get currentRoute =>
      routes.isNotEmpty && selectedRouteIndex < routes.length
          ? routes[selectedRouteIndex]
          : null;

  bool get isNavigating => status == NavigationStatus.navigating;

  String get formattedRemainingDistance {
    if (remainingDistance >= 1000) {
      return '${(remainingDistance / 1000).toStringAsFixed(1)} كم';
    }
    return '${remainingDistance.round()} م';
  }

  String get formattedRemainingDuration {
    final int minutes = (remainingDuration / 60).round();
    if (minutes >= 60) {
      final int hours = minutes ~/ 60;
      final int remMin = minutes % 60;
      return '$hours س $remMin د';
    }
    return '$minutes دقيقة';
  }

  String get formattedDistanceToStep {
    if (distanceToNextStep >= 1000) {
      return '${(distanceToNextStep / 1000).toStringAsFixed(1)} كم';
    }
    if (distanceToNextStep > 0) {
      return '${distanceToNextStep.round()} م';
    }
    return '';
  }

  NavigationState copyWith({
    NavigationStatus? status,
    LatLng? myLocation,
    double? altitude,
    double? heading,
    double? speed,
    List<RouteData>? routes,
    int? selectedRouteIndex,
    LatLng? destination,
    String? destinationTitle,
    String? originTitle,
    List<Map<String, dynamic>>? routeSteps,
    int? currentStepIndex,
    String? currentInstruction,
    String? nextInstruction,
    double? distanceToNextStep,
    double? remainingDistance,
    double? remainingDuration,
    int? currentManeuverModifier,
    String? arrivalTime,
    bool? isMuted,
    bool? isCameraLocked,
    MapThemeType? mapTheme,
    Set<Marker>? markers,
    Set<Polyline>? polylines,
    List<PlaceModel>? searchResults,
    bool? isSelectingLocationOnMap,
    String? activePickerMode,
    bool clearActivePickerMode = false,
    LatLng? pickedLocation,
    bool clearPickedLocation = false,
    bool? isOnline,
    String? errorMessage,
    int? selectedVehicleColor,
    String? selectedVehicleStyle,
    double? vehicleScale,
    List<String>? recentSearches,
    bool? isSearching,
    bool? isOrbiting,
    double? orbitSpeed,
    bool? isSunPlaying,
    int? sunTimeMinutes,
    double? terrainExaggeration,
    double? cameraTilt,
    bool? showBuildings,
    bool? showContours,
    bool? showHillshading,
    bool? isTouristModeEnabled,
    String? selectedLandmarkId,
    bool clearSelectedLandmark = false,
  }) {
    return NavigationState(
      status: status ?? this.status,
      myLocation: myLocation ?? this.myLocation,
      altitude: altitude ?? this.altitude,
      heading: heading ?? this.heading,
      speed: speed ?? this.speed,
      routes: routes ?? this.routes,
      selectedRouteIndex: selectedRouteIndex ?? this.selectedRouteIndex,
      destination: destination ?? this.destination,
      destinationTitle: destinationTitle ?? this.destinationTitle,
      originTitle: originTitle ?? this.originTitle,
      routeSteps: routeSteps ?? this.routeSteps,
      currentStepIndex: currentStepIndex ?? this.currentStepIndex,
      currentInstruction: currentInstruction ?? this.currentInstruction,
      nextInstruction: nextInstruction ?? this.nextInstruction,
      distanceToNextStep: distanceToNextStep ?? this.distanceToNextStep,
      remainingDistance: remainingDistance ?? this.remainingDistance,
      remainingDuration: remainingDuration ?? this.remainingDuration,
      currentManeuverModifier:
          currentManeuverModifier ?? this.currentManeuverModifier,
      arrivalTime: arrivalTime ?? this.arrivalTime,
      isMuted: isMuted ?? this.isMuted,
      isCameraLocked: isCameraLocked ?? this.isCameraLocked,
      mapTheme: mapTheme ?? this.mapTheme,
      markers: markers ?? this.markers,
      polylines: polylines ?? this.polylines,
      searchResults: searchResults ?? this.searchResults,
      isSelectingLocationOnMap:
          isSelectingLocationOnMap ?? this.isSelectingLocationOnMap,
      activePickerMode: clearActivePickerMode ? null : (activePickerMode ?? this.activePickerMode),
      pickedLocation: clearPickedLocation ? null : (pickedLocation ?? this.pickedLocation),
      isOnline: isOnline ?? this.isOnline,
      errorMessage: errorMessage ?? this.errorMessage,
      selectedVehicleColor: selectedVehicleColor ?? this.selectedVehicleColor,
      selectedVehicleStyle: selectedVehicleStyle ?? this.selectedVehicleStyle,
      vehicleScale: vehicleScale ?? this.vehicleScale,
      recentSearches: recentSearches ?? this.recentSearches,
      isSearching: isSearching ?? this.isSearching,
      isOrbiting: isOrbiting ?? this.isOrbiting,
      orbitSpeed: orbitSpeed ?? this.orbitSpeed,
      isSunPlaying: isSunPlaying ?? this.isSunPlaying,
      sunTimeMinutes: sunTimeMinutes ?? this.sunTimeMinutes,
      terrainExaggeration: terrainExaggeration ?? this.terrainExaggeration,
      cameraTilt: cameraTilt ?? this.cameraTilt,
      showBuildings: showBuildings ?? this.showBuildings,
      showContours: showContours ?? this.showContours,
      showHillshading: showHillshading ?? this.showHillshading,
      isTouristModeEnabled: isTouristModeEnabled ?? this.isTouristModeEnabled,
      selectedLandmarkId: clearSelectedLandmark ? null : (selectedLandmarkId ?? this.selectedLandmarkId),
    );
  }

  @override
  List<Object?> get props => [
        status,
        myLocation,
        altitude,
        heading,
        speed,
        routes,
        selectedRouteIndex,
        destination,
        destinationTitle,
        originTitle,
        routeSteps,
        currentStepIndex,
        currentInstruction,
        nextInstruction,
        distanceToNextStep,
        remainingDistance,
        remainingDuration,
        currentManeuverModifier,
        arrivalTime,
        isMuted,
        isCameraLocked,
        mapTheme,
        markers,
        polylines,
        searchResults,
        isSelectingLocationOnMap,
        activePickerMode,
        pickedLocation,
        isOnline,
        errorMessage,
        selectedVehicleColor,
        selectedVehicleStyle,
        vehicleScale,
        recentSearches,
        isSearching,
        isOrbiting,
        orbitSpeed,
        isSunPlaying,
        sunTimeMinutes,
        terrainExaggeration,
        cameraTilt,
        showBuildings,
        showContours,
        showHillshading,
        isTouristModeEnabled,
        selectedLandmarkId,
      ];
}