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

import 'package:worker/core/database/app_settings_box.dart';
import 'package:worker/core/theme/colors.dart';

part 'theme_provider.g.dart';

/// Theme settings state
class ThemeSettings {
  const ThemeSettings({
    required this.seedColorId,
    required this.themeMode,
  });

  final String seedColorId;
  final ThemeMode themeMode;

  /// Get the actual Color from the seed color ID
  Color get seedColor => AppColors.getSeedColorById(seedColorId);

  /// Get the SeedColorOption from the ID
  SeedColorOption get seedColorOption => AppColors.seedColorOptions.firstWhere(
        (option) => option.id == seedColorId,
        orElse: () => AppColors.seedColorOptions.first,
      );

  ThemeSettings copyWith({
    String? seedColorId,
    ThemeMode? themeMode,
  }) {
    return ThemeSettings(
      seedColorId: seedColorId ?? this.seedColorId,
      themeMode: themeMode ?? this.themeMode,
    );
  }
}

/// Provider for managing theme settings with Hive persistence
/// Uses AppSettingsBox for storage
@Riverpod(keepAlive: true)
class ThemeSettingsNotifier extends _$ThemeSettingsNotifier {
  @override
  ThemeSettings build() {
    return _loadFromSettings();
  }

  ThemeSettings _loadFromSettings() {
    return ThemeSettings(
      seedColorId: AppSettingsBox.getSeedColorId(),
      themeMode: ThemeMode.values[AppSettingsBox.getThemeModeIndex()],
    );
  }

  /// Update seed color
  Future<void> setSeedColor(String colorId) async {
    await AppSettingsBox.setSeedColorId(colorId);
    state = state.copyWith(seedColorId: colorId);
  }

  /// Update theme mode (light/dark/system)
  Future<void> setThemeMode(ThemeMode mode) async {
    await AppSettingsBox.setThemeModeIndex(mode.index);
    state = state.copyWith(themeMode: mode);
  }

  /// Toggle between light and dark mode
  Future<void> toggleThemeMode() async {
    final newMode =
        state.themeMode == ThemeMode.light ? ThemeMode.dark : ThemeMode.light;
    await setThemeMode(newMode);
  }
}

/// Provider for the current seed color (convenience provider)
@riverpod
Color currentSeedColor(Ref ref) {
  return ref.watch(
    themeSettingsProvider.select((settings) => settings.seedColor),
  );
}

/// Provider for available seed color options
@riverpod
List<SeedColorOption> seedColorOptions(Ref ref) {
  return AppColors.seedColorOptions;
}