import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/services.dart';

import 'package:get/get.dart';
import '../utils/kr_secure_storage.dart'; // 确保导入路径正确

class KRThemeService extends GetxService {
  // 单例模式实现
  static final KRThemeService _instance = KRThemeService._internal();
  factory KRThemeService() => _instance;
  KRThemeService._internal();

  final KRSecureStorage _storage = KRSecureStorage(); // 创建安全存储实例
  final String _key = 'themeOption'; // 存储主题选项的键
  late ThemeMode _currentThemeOption = ThemeMode.light; // 当前主题选项

  /// 初始化时从存储中加载主题设置
  Future<void> init() async {
    _currentThemeOption = await kr_loadThemeOptionFromStorage();
  }

  /// 获取当前主题模式
  ThemeMode get kr_Theme {
    switch (_currentThemeOption) {
      case ThemeMode.light:
        return ThemeMode.light;
      case ThemeMode.dark:
        return ThemeMode.dark;
      case ThemeMode.system:
      default:
        return ThemeMode.system;
    }
  }

  /// 从安全存储中加载主题选项
  /// 返回 KRThemeOption 枚举值
  Future<ThemeMode> kr_loadThemeOptionFromStorage() async {
    String? themeOption = await _storage.kr_readData(key: _key);
    switch (themeOption) {
      case 'light':
        return ThemeMode.light;
      case 'dark':
        return ThemeMode.dark;
      case 'system':
        return ThemeMode.system;
      default:
        return ThemeMode.light;
    }
  }

  /// 将主题选项保存到安全存储中
  /// 参数 [option] 为 KRThemeOption 枚举值
  Future<void> kr_saveThemeOptionToStorage(ThemeMode option) async {
    await _storage.kr_saveData(
        key: _key, value: option.toString().split('.').last);
  }

  /// 切换主题模式
  /// 循环切换亮色、暗色、跟随系统
  Future<void> kr_switchTheme(ThemeMode option) async {
    _currentThemeOption = option;
    Get.changeThemeMode(kr_Theme);
    await kr_saveThemeOptionToStorage(option);
  }

  /// 定义亮模式的主题数据
  ThemeData kr_lightTheme() {
    return ThemeData.light().copyWith(
      primaryColor: const Color(0xFFF6F6F6),
      scaffoldBackgroundColor: Colors.white, // 整体背景色
      cardColor: Colors.white, // 卡片背景色
      appBarTheme: const AppBarTheme(
        systemOverlayStyle: SystemUiOverlayStyle.dark, // 使用深色状态栏样式
      ),
      hintColor: const Color(0xFFBFBFBF),
      textTheme: TextTheme(
        bodyMedium: TextStyle(color: const Color(0xFF333333)), // 标题颜色
        bodySmall: TextStyle(color: const Color(0xFF777777)), // 子标题颜色
        labelMedium: TextStyle(color: const Color(0xFF333333)), // 标题颜色
        labelSmall: TextStyle(color: const Color(0xFF777777)), // 子标题颜色
      ),
      elevatedButtonTheme: ElevatedButtonThemeData(
        style:
            ElevatedButton.styleFrom(backgroundColor: Colors.green), // 自定义的按钮颜色
      ),
      switchTheme: SwitchThemeData(
        thumbColor: WidgetStateProperty.all(Colors.white), // 开关按钮颜色
        trackColor: WidgetStateProperty.resolveWith<Color>((states) {
          if (states.contains(WidgetState.selected)) {
            return Color.fromRGBO(23, 151, 255, 1); // 开启状态轨道颜色
          }
          return Color.fromRGBO(202, 202, 202, 1); // 关闭状态轨道颜色
        }),
      ),
      // 其他自定义颜色
    );
  }

// class KRColors {
//   // 1. 底部导航栏背景色（稍深的蓝黑色）
//   static const Color kr_bottomNavBackground = Color(0xFF161920);
  
//   // 2. 列表整体背景色（深蓝黑色）
//   static const Color kr_listBackground = Color(0xFF1A1D24);
  
//   // 3. 列表项背景色（略浅于列表背景的蓝黑色）
//   static const Color kr_listItemBackground = Color(0xFF1E2128);
// }
  /// 定义暗模式的主题数据
  ThemeData kr_darkTheme() {
    return ThemeData.dark().copyWith(
      primaryColor: Color.fromRGBO(18,22,32,1),
      scaffoldBackgroundColor: Color.fromRGBO(21,25,35,1),
      cardColor: Color.fromRGBO(27,31,41, 1),
      appBarTheme: const AppBarTheme(
        systemOverlayStyle: SystemUiOverlayStyle.light, // 使用浅色状态栏样式
      ),
      hintColor: const Color(0xFFBBBBBB),
      textTheme: TextTheme(
        bodyMedium: TextStyle(color: const Color(0xFFFFFFFF)), // 标题颜色
        bodySmall: TextStyle(color: const Color(0xFFBBBBBB)), // 子标题
        labelMedium: TextStyle(color: const Color(0xFFFFFFFF)), // 标题颜色
        labelSmall: TextStyle(color: const Color(0xFFBBBBBB)), // 子标题颜色
      ),
      elevatedButtonTheme: ElevatedButtonThemeData(
        style: ElevatedButton.styleFrom(
            backgroundColor: Colors.purple), // 自定义的按钮颜色
      ),
      switchTheme: SwitchThemeData(
        thumbColor: WidgetStateProperty.all(Colors.white), // 开关按钮颜色
        trackColor: WidgetStateProperty.resolveWith<Color>((states) {
          if (states.contains(WidgetState.selected)) {
            return Color.fromRGBO(23, 151, 255, 1); // 开启状态轨道颜色
          }
          return Color.fromRGBO(202, 202, 202, 1); // 关闭状态轨道颜色
        }),
        trackOutlineColor: WidgetStateProperty.resolveWith<Color>((states) {
          if (!states.contains(WidgetState.selected)) {
            return Colors.transparent; // 关闭状态的边框颜色
          }
          return Colors.transparent; // 打开时不显示边框
        }),
      ),
      // 其他自定义颜色
    );
  }
}