import 'dart:convert';
import 'package:flutter/foundation.dart';
import '../models/app_settings.dart';
import '../storage/prefs_manager.dart';
import '../utils/app_logger.dart';

class AppSettingsService extends ChangeNotifier {
  static const String _settingsKey = 'app_settings';

  AppSettings _settings = AppSettings();

  AppSettings get settings => _settings;

  String batteryChemistryForDevice(String deviceId) {
    final stored = _settings.batteryChemistryByDeviceId[deviceId];
    if (stored == 'liion') return 'nmc';
    return stored ?? 'nmc';
  }

  String batteryChemistryForRepeater(String repeaterPubKeyHex) {
    final stored = _settings.batteryChemistryByRepeaterId[repeaterPubKeyHex];
    if (stored == 'liion') return 'nmc';
    return stored ?? 'nmc';
  }

  Future<void> loadSettings() async {
    final prefs = PrefsManager.instance;
    final jsonStr = prefs.getString(_settingsKey);

    if (jsonStr != null) {
      try {
        final json = jsonDecode(jsonStr) as Map<String, dynamic>;
        _settings = AppSettings.fromJson(json);
        notifyListeners();
      } catch (e) {
        // If parsing fails, use defaults
        _settings = AppSettings();
      }
    }
  }

  Future<void> updateSettings(AppSettings newSettings) async {
    _settings = newSettings;
    notifyListeners();

    final prefs = PrefsManager.instance;
    final jsonStr = jsonEncode(_settings.toJson());
    await prefs.setString(_settingsKey, jsonStr);
  }

  Future<void> setClearPathOnMaxRetry(bool value) async {
    await updateSettings(_settings.copyWith(clearPathOnMaxRetry: value));
  }

  Future<void> setMapShowRepeaters(bool value) async {
    await updateSettings(_settings.copyWith(mapShowRepeaters: value));
  }

  Future<void> setMapShowChatNodes(bool value) async {
    await updateSettings(_settings.copyWith(mapShowChatNodes: value));
  }

  Future<void> setMapShowOtherNodes(bool value) async {
    await updateSettings(_settings.copyWith(mapShowOtherNodes: value));
  }

  Future<void> setMapShowOverlaps(bool value) async {
    await updateSettings(_settings.copyWith(mapShowOverlaps: value));
  }

  Future<void> setMapTimeFilterHours(double value) async {
    await updateSettings(_settings.copyWith(mapTimeFilterHours: value));
  }

  Future<void> setMapKeyPrefixEnabled(bool value) async {
    await updateSettings(_settings.copyWith(mapKeyPrefixEnabled: value));
  }

  Future<void> setMapKeyPrefix(String value) async {
    await updateSettings(_settings.copyWith(mapKeyPrefix: value));
  }

  Future<void> setMapShowMarkers(bool value) async {
    await updateSettings(_settings.copyWith(mapShowMarkers: value));
  }

  Future<void> setMapShowGuessedLocations(bool value) async {
    await updateSettings(_settings.copyWith(mapShowGuessedLocations: value));
  }

  Future<void> setEnableMessageTracing(bool value) async {
    await updateSettings(_settings.copyWith(enableMessageTracing: value));
  }

  Future<void> setMapCacheBounds(Map<String, double>? value) async {
    await updateSettings(_settings.copyWith(mapCacheBounds: value));
  }

  Future<void> setMapCacheZoomRange(int minZoom, int maxZoom) async {
    final safeMin = minZoom <= maxZoom ? minZoom : maxZoom;
    final safeMax = minZoom <= maxZoom ? maxZoom : minZoom;
    await updateSettings(
      _settings.copyWith(mapCacheMinZoom: safeMin, mapCacheMaxZoom: safeMax),
    );
  }

  Future<void> setNotificationsEnabled(bool value) async {
    await updateSettings(_settings.copyWith(notificationsEnabled: value));
  }

  Future<void> setNotifyOnNewMessage(bool value) async {
    await updateSettings(_settings.copyWith(notifyOnNewMessage: value));
  }

  Future<void> setNotifyOnNewChannelMessage(bool value) async {
    await updateSettings(_settings.copyWith(notifyOnNewChannelMessage: value));
  }

  Future<void> setNotifyOnNewAdvert(bool value) async {
    await updateSettings(_settings.copyWith(notifyOnNewAdvert: value));
  }

  Future<void> setAutoRouteRotationEnabled(bool value) async {
    await updateSettings(_settings.copyWith(autoRouteRotationEnabled: value));
  }

  Future<void> setMaxRouteWeight(double value) async {
    await updateSettings(_settings.copyWith(maxRouteWeight: value));
  }

  Future<void> setInitialRouteWeight(double value) async {
    await updateSettings(_settings.copyWith(initialRouteWeight: value));
  }

  Future<void> setRouteWeightSuccessIncrement(double value) async {
    await updateSettings(
      _settings.copyWith(routeWeightSuccessIncrement: value),
    );
  }

  Future<void> setRouteWeightFailureDecrement(double value) async {
    await updateSettings(
      _settings.copyWith(routeWeightFailureDecrement: value),
    );
  }

  Future<void> setMaxMessageRetries(int value) async {
    await updateSettings(_settings.copyWith(maxMessageRetries: value));
  }

  Future<void> setThemeMode(String value) async {
    await updateSettings(_settings.copyWith(themeMode: value));
  }

  Future<void> setLanguageOverride(String? value) async {
    await updateSettings(_settings.copyWith(languageOverride: value));
  }

  Future<void> setAppDebugLogEnabled(bool value) async {
    await updateSettings(_settings.copyWith(appDebugLogEnabled: value));
    // Update the global logger
    appLogger.setEnabled(value);
  }

  Future<void> setMapShowDiscoveryContacts(bool value) async {
    await updateSettings(_settings.copyWith(mapShowDiscoveryContacts: value));
  }

  Future<void> setBatteryChemistryForDevice(
    String deviceId,
    String chemistry,
  ) async {
    final updated = Map<String, String>.from(
      _settings.batteryChemistryByDeviceId,
    );
    updated[deviceId] = chemistry;
    await updateSettings(
      _settings.copyWith(batteryChemistryByDeviceId: updated),
    );
  }

  Future<void> setBatteryChemistryForRepeater(
    String repeaterPubKeyHex,
    String chemistry,
  ) async {
    final updated = Map<String, String>.from(
      _settings.batteryChemistryByRepeaterId,
    );
    updated[repeaterPubKeyHex] = chemistry;
    await updateSettings(
      _settings.copyWith(batteryChemistryByRepeaterId: updated),
    );
  }

  Future<void> setUnitSystem(UnitSystem value) async {
    await updateSettings(_settings.copyWith(unitSystem: value));
  }

  bool isChannelMuted(String channelName) {
    return _settings.mutedChannels.contains(channelName);
  }

  Future<void> muteChannel(String channelName) async {
    final updated = Set<String>.from(_settings.mutedChannels)..add(channelName);
    await updateSettings(_settings.copyWith(mutedChannels: updated));
  }

  Future<void> unmuteChannel(String channelName) async {
    final updated = Set<String>.from(_settings.mutedChannels)
      ..remove(channelName);
    await updateSettings(_settings.copyWith(mutedChannels: updated));
  }

  Future<void> setTcpServerAddress(String value) async {
    await updateSettings(_settings.copyWith(tcpServerAddress: value));
  }

  Future<void> setTcpServerPort(int value) async {
    await updateSettings(_settings.copyWith(tcpServerPort: value));
  }
}