import 'dart:convert';

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

part 'config.freezed.dart';
part 'config.g.dart';

const kTokenPairStoreKey = 'dyn_user_tk';

const kNetworkServerDefault = 'https://api.solian.app';
const kNetworkServerStoreKey = 'app_server_url';

const kAppbarTransparentStoreKey = 'app_bar_transparent';
const kAppBackgroundStoreKey = 'app_has_background';
const kAppShowBackgroundImage = 'app_show_background_image';
const kAppColorSchemeStoreKey = 'app_color_scheme';
const kAppCustomColorsStoreKey = 'app_custom_colors';
const kAppNotifyWithHaptic = 'app_notify_with_haptic';
const kAppCustomFonts = 'app_custom_fonts';
const kAppAutoTranslate = 'app_auto_translate';
const kAppDataSavingMode = 'app_data_saving_mode';
const kAppSoundEffects = 'app_sound_effects';
const kAppAprilFoolFeatures = 'app_april_fool_features';
const kAppWindowSize = 'app_window_size';
const kAppWindowOpacity = 'app_window_opacity';
const kAppCardTransparent = 'app_card_transparent';
const kAppEnterToSend = 'app_enter_to_send';
const kAppDefaultPoolId = 'app_default_pool_id';
const kAppMessageDisplayStyle = 'app_message_display_style';
const kAppThemeMode = 'app_theme_mode';
const kMaterialYouToggleStoreKey = 'app_theme_material_you';
const kFeaturedPostsCollapsedId =
    'featured_posts_collapsed_id'; // Key for storing the ID of the collapsed featured post

const Map<String, FilterQuality> kImageQualityLevel = {
  'settingsImageQualityLowest': FilterQuality.none,
  'settingsImageQualityLow': FilterQuality.low,
  'settingsImageQualityMedium': FilterQuality.medium,
  'settingsImageQualityHigh': FilterQuality.high,
};

final sharedPreferencesProvider = Provider<SharedPreferences>((ref) {
  throw UnimplementedError();
});

final imageQualityProvider = Provider<FilterQuality>((ref) {
  final prefs = ref.watch(sharedPreferencesProvider);
  return kImageQualityLevel.values.elementAtOrNull(
        prefs.getInt('app_image_quality') ?? 3,
      ) ??
      FilterQuality.high;
});

final serverUrlProvider = Provider<String>((ref) {
  final prefs = ref.watch(sharedPreferencesProvider);
  return prefs.getString(kNetworkServerStoreKey) ?? kNetworkServerDefault;
});

@freezed
sealed class ThemeColors with _$ThemeColors {
  factory ThemeColors({
    int? primary,
    int? secondary,
    int? tertiary,
    int? surface,
    int? background,
    int? error,
  }) = _ThemeColors;

  factory ThemeColors.fromJson(Map<String, dynamic> json) =>
      _$ThemeColorsFromJson(json);
}

@freezed
sealed class AppSettings with _$AppSettings {
  const factory AppSettings({
    required bool autoTranslate,
    required bool dataSavingMode,
    required bool soundEffects,
    required bool aprilFoolFeatures,
    required bool enterToSend,
    required bool appBarTransparent,
    required bool showBackgroundImage,
    required String? customFonts,
    required int? appColorScheme, // The color stored via the int type
    required ThemeColors? customColors,
    required Size? windowSize, // The window size for desktop platforms
    required double windowOpacity, // The window opacity for desktop platforms
    required double cardTransparency, // The card background opacity
    required String? defaultPoolId,
    required String messageDisplayStyle,
    required String? themeMode,
    required bool useMaterial3,
  }) = _AppSettings;
}

@riverpod
class AppSettingsNotifier extends _$AppSettingsNotifier {
  @override
  AppSettings build() {
    final prefs = ref.watch(sharedPreferencesProvider);
    return AppSettings(
      autoTranslate: prefs.getBool(kAppAutoTranslate) ?? false,
      dataSavingMode: prefs.getBool(kAppDataSavingMode) ?? false,
      soundEffects: prefs.getBool(kAppSoundEffects) ?? true,
      aprilFoolFeatures: prefs.getBool(kAppAprilFoolFeatures) ?? true,
      enterToSend: prefs.getBool(kAppEnterToSend) ?? true,
      appBarTransparent: prefs.getBool(kAppbarTransparentStoreKey) ?? false,
      showBackgroundImage: prefs.getBool(kAppShowBackgroundImage) ?? true,
      customFonts: prefs.getString(kAppCustomFonts),
      appColorScheme: prefs.getInt(kAppColorSchemeStoreKey),
      customColors: _getThemeColorsFromPrefs(prefs),
      windowSize: _getWindowSizeFromPrefs(prefs),
      windowOpacity: prefs.getDouble(kAppWindowOpacity) ?? 1.0,
      cardTransparency: prefs.getDouble(kAppCardTransparent) ?? 1.0,
      defaultPoolId: prefs.getString(kAppDefaultPoolId),
      messageDisplayStyle: prefs.getString(kAppMessageDisplayStyle) ?? 'bubble',
      themeMode: prefs.getString(kAppThemeMode) ?? 'system',
      useMaterial3: prefs.getBool(kMaterialYouToggleStoreKey) ?? true,
    );
  }

  Size? _getWindowSizeFromPrefs(SharedPreferences prefs) {
    final sizeString = prefs.getString(kAppWindowSize);
    if (sizeString == null) return null;

    try {
      final parts = sizeString.split(',');
      if (parts.length == 2) {
        final width = double.parse(parts[0]);
        final height = double.parse(parts[1]);
        return Size(width, height);
      }
    } catch (e) {
      // Invalid format, return null
    }
    return null;
  }

  ThemeColors? _getThemeColorsFromPrefs(SharedPreferences prefs) {
    final jsonString = prefs.getString(kAppCustomColorsStoreKey);
    if (jsonString == null) return null;

    try {
      final json = jsonDecode(jsonString);
      return ThemeColors.fromJson(json);
    } catch (e) {
      return null;
    }
  }

  void setDefaultPoolId(String? value) {
    final prefs = ref.read(sharedPreferencesProvider);
    if (value != null) {
      prefs.setString(kAppDefaultPoolId, value);
    } else {
      prefs.remove(kAppDefaultPoolId);
    }
    state = state.copyWith(defaultPoolId: value);
  }

  void setAutoTranslate(bool value) {
    final prefs = ref.read(sharedPreferencesProvider);
    prefs.setBool(kAppAutoTranslate, value);
    state = state.copyWith(autoTranslate: value);
  }

  void setDataSavingMode(bool value) {
    final prefs = ref.read(sharedPreferencesProvider);
    prefs.setBool(kAppDataSavingMode, value);
    state = state.copyWith(dataSavingMode: value);
  }

  void setSoundEffects(bool value) {
    final prefs = ref.read(sharedPreferencesProvider);
    prefs.setBool(kAppSoundEffects, value);
    state = state.copyWith(soundEffects: value);
  }

  void setAprilFoolFeatures(bool value) {
    final prefs = ref.read(sharedPreferencesProvider);
    prefs.setBool(kAppAprilFoolFeatures, value);
    state = state.copyWith(aprilFoolFeatures: value);
  }

  void setEnterToSend(bool value) {
    final prefs = ref.read(sharedPreferencesProvider);
    prefs.setBool(kAppEnterToSend, value);
    state = state.copyWith(enterToSend: value);
  }

  void setAppBarTransparent(bool value) {
    final prefs = ref.read(sharedPreferencesProvider);
    prefs.setBool(kAppbarTransparentStoreKey, value);
    state = state.copyWith(appBarTransparent: value);
  }

  void setShowBackgroundImage(bool value) {
    final prefs = ref.read(sharedPreferencesProvider);
    prefs.setBool(kAppShowBackgroundImage, value);
    state = state.copyWith(showBackgroundImage: value);
  }

  void setCustomFonts(String? value) {
    final prefs = ref.read(sharedPreferencesProvider);
    prefs.setString(kAppCustomFonts, value ?? '');
    state = state.copyWith(customFonts: value);
  }

  void setAppColorScheme(int? value) {
    final prefs = ref.read(sharedPreferencesProvider);
    prefs.setInt(kAppColorSchemeStoreKey, value ?? 0);
    state = state.copyWith(appColorScheme: value);
  }

  void setWindowSize(Size? size) {
    final prefs = ref.read(sharedPreferencesProvider);
    if (size != null) {
      prefs.setString(kAppWindowSize, '${size.width},${size.height}');
    } else {
      prefs.remove(kAppWindowSize);
    }
    state = state.copyWith(windowSize: size);
  }

  Size? getWindowSize() {
    return state.windowSize;
  }

  void setMessageDisplayStyle(String value) {
    final prefs = ref.read(sharedPreferencesProvider);
    prefs.setString(kAppMessageDisplayStyle, value);
    state = state.copyWith(messageDisplayStyle: value);
  }

  void setWindowOpacity(double value) {
    final prefs = ref.read(sharedPreferencesProvider);
    prefs.setDouble(kAppWindowOpacity, value);
    state = state.copyWith(windowOpacity: value);
    Future(() => windowManager.setOpacity(value));
  }

  void setThemeMode(String value) {
    final prefs = ref.read(sharedPreferencesProvider);
    prefs.setString(kAppThemeMode, value);
    state = state.copyWith(themeMode: value);
  }

  void setAppTransparentBackground(double value) {
    final prefs = ref.read(sharedPreferencesProvider);
    prefs.setDouble(kAppCardTransparent, value);
    state = state.copyWith(cardTransparency: value);
  }

  void setUseMaterial3(bool value) {
    final prefs = ref.read(sharedPreferencesProvider);
    prefs.setBool(kMaterialYouToggleStoreKey, value);
    state = state.copyWith(useMaterial3: value);
  }

  void setCustomColors(ThemeColors? value) {
    final prefs = ref.read(sharedPreferencesProvider);
    if (value != null) {
      final json = jsonEncode(value.toJson());
      prefs.setString(kAppCustomColorsStoreKey, json);
    } else {
      prefs.remove(kAppCustomColorsStoreKey);
    }
    state = state.copyWith(customColors: value);
  }
}

final updateInfoProvider =
    StateNotifierProvider<UpdateInfoNotifier, (String?, String?)>((ref) {
      return UpdateInfoNotifier();
    });

class UpdateInfoNotifier extends StateNotifier<(String?, String?)> {
  UpdateInfoNotifier() : super((null, null));

  void setUpdate(String newVersion, String newChangelog) {
    state = (newVersion, newChangelog);
  }
}