import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:shared_preferences/shared_preferences.dart';

/// Selectable tactical map base tile styles for MOB-06 / MAP-02.
enum TacticalMapStyle {
  tacticalDark,
  satellite4K,
  elevation3D,
}

extension TacticalMapStyleExtension on TacticalMapStyle {
  String get displayName {
    switch (this) {
      case TacticalMapStyle.tacticalDark:
        return 'Tactical Dark';
      case TacticalMapStyle.satellite4K:
        return 'Satellite 4K';
      case TacticalMapStyle.elevation3D:
        return '3D Topo Elevation';
    }
  }

  String get subtitle {
    switch (this) {
      case TacticalMapStyle.tacticalDark:
        return 'Vector with highlighted twisty passes';
      case TacticalMapStyle.satellite4K:
        return 'Esri / AWS aerial satellite imagery';
      case TacticalMapStyle.elevation3D:
        return 'Mountain contours & elevation shading';
    }
  }

  IconData get icon {
    switch (this) {
      case TacticalMapStyle.tacticalDark:
        return Icons.dark_mode_outlined;
      case TacticalMapStyle.satellite4K:
        return Icons.satellite_alt_outlined;
      case TacticalMapStyle.elevation3D:
        return Icons.terrain_outlined;
    }
  }
}

/// Tactical layer and overlay preferences for the motorcycle map HUD.
class MapLayerSettings {
  final TacticalMapStyle style;
  final bool showPoliceTraps;
  final bool showPackBlips;
  final bool showTwistyHighlights;
  final bool offlineOnly;

  const MapLayerSettings({
    this.style = TacticalMapStyle.tacticalDark,
    this.showPoliceTraps = true,
    this.showPackBlips = true,
    this.showTwistyHighlights = true,
    this.offlineOnly = false,
  });

  MapLayerSettings copyWith({
    TacticalMapStyle? style,
    bool? showPoliceTraps,
    bool? showPackBlips,
    bool? showTwistyHighlights,
    bool? offlineOnly,
  }) {
    return MapLayerSettings(
      style: style ?? this.style,
      showPoliceTraps: showPoliceTraps ?? this.showPoliceTraps,
      showPackBlips: showPackBlips ?? this.showPackBlips,
      showTwistyHighlights: showTwistyHighlights ?? this.showTwistyHighlights,
      offlineOnly: offlineOnly ?? this.offlineOnly,
    );
  }

  @override
  bool operator ==(Object other) =>
      identical(this, other) ||
      other is MapLayerSettings &&
          runtimeType == other.runtimeType &&
          style == other.style &&
          showPoliceTraps == other.showPoliceTraps &&
          showPackBlips == other.showPackBlips &&
          showTwistyHighlights == other.showTwistyHighlights &&
          offlineOnly == other.offlineOnly;

  @override
  int get hashCode =>
      style.hashCode ^
      showPoliceTraps.hashCode ^
      showPackBlips.hashCode ^
      showTwistyHighlights.hashCode ^
      offlineOnly.hashCode;
}

class MapLayerSettingsNotifier extends StateNotifier<MapLayerSettings> {
  static const String _prefKeyStyle = 'tactical_map_style';
  static const String _prefKeyTraps = 'tactical_show_police_traps';
  static const String _prefKeyPack = 'tactical_show_pack_blips';
  static const String _prefKeyTwisty = 'tactical_show_twisty';
  static const String _prefKeyOffline = 'tactical_offline_only';

  MapLayerSettingsNotifier() : super(const MapLayerSettings()) {
    _loadFromPrefs();
  }

  Future<void> _loadFromPrefs() async {
    try {
      final prefs = await SharedPreferences.getInstance();
      final styleStr = prefs.getString(_prefKeyStyle);
      final style = styleStr != null
          ? TacticalMapStyle.values.firstWhere(
              (s) => s.name == styleStr,
              orElse: () => TacticalMapStyle.tacticalDark,
            )
          : TacticalMapStyle.tacticalDark;
      state = MapLayerSettings(
        style: style,
        showPoliceTraps: prefs.getBool(_prefKeyTraps) ?? true,
        showPackBlips: prefs.getBool(_prefKeyPack) ?? true,
        showTwistyHighlights: prefs.getBool(_prefKeyTwisty) ?? true,
        offlineOnly: prefs.getBool(_prefKeyOffline) ?? false,
      );
    } catch (_) {}
  }

  Future<void> setStyle(TacticalMapStyle style) async {
    state = state.copyWith(style: style);
    try {
      final prefs = await SharedPreferences.getInstance();
      await prefs.setString(_prefKeyStyle, style.name);
    } catch (_) {}
  }

  Future<void> togglePoliceTraps(bool val) async {
    state = state.copyWith(showPoliceTraps: val);
    try {
      final prefs = await SharedPreferences.getInstance();
      await prefs.setBool(_prefKeyTraps, val);
    } catch (_) {}
  }

  Future<void> togglePackBlips(bool val) async {
    state = state.copyWith(showPackBlips: val);
    try {
      final prefs = await SharedPreferences.getInstance();
      await prefs.setBool(_prefKeyPack, val);
    } catch (_) {}
  }

  Future<void> toggleTwistyHighlights(bool val) async {
    state = state.copyWith(showTwistyHighlights: val);
    try {
      final prefs = await SharedPreferences.getInstance();
      await prefs.setBool(_prefKeyTwisty, val);
    } catch (_) {}
  }

  Future<void> toggleOfflineOnly(bool val) async {
    state = state.copyWith(offlineOnly: val);
    try {
      final prefs = await SharedPreferences.getInstance();
      await prefs.setBool(_prefKeyOffline, val);
    } catch (_) {}
  }

  Future<void> resetToDefaults() async {
    state = const MapLayerSettings();
    try {
      final prefs = await SharedPreferences.getInstance();
      await prefs.remove(_prefKeyStyle);
      await prefs.remove(_prefKeyTraps);
      await prefs.remove(_prefKeyPack);
      await prefs.remove(_prefKeyTwisty);
      await prefs.remove(_prefKeyOffline);
    } catch (_) {}
  }
}

final mapLayerSettingsProvider =
    StateNotifierProvider<MapLayerSettingsNotifier, MapLayerSettings>((ref) {
  return MapLayerSettingsNotifier();
});