/**
 * 应用设置状态管理
 * 使用 Zustand + AsyncStorage 持久化
 */

import { create } from 'zustand';
import { useShallow } from 'zustand/react/shallow';
import AsyncStorage from '@react-native-async-storage/async-storage';

/**
 * 主题类型
 */
export type Theme = 'light' | 'dark' | 'auto';

/**
 * 语言类型
 */
export type Language = 'zh-CN' | 'en-US';

/**
 * 设置状态接口
 */
interface SettingsState {
  // 状态
  theme: Theme;
  language: Language;
  notificationsEnabled: boolean;
  soundEnabled: boolean;
  hapticsEnabled: boolean;

  // 操作
  setTheme: (theme: Theme) => void;
  setLanguage: (language: Language) => void;
  setNotificationsEnabled: (enabled: boolean) => void;
  setSoundEnabled: (enabled: boolean) => void;
  setHapticsEnabled: (enabled: boolean) => void;
  resetSettings: () => void;
}

/**
 * 默认设置
 */
const DEFAULT_SETTINGS = {
  theme: 'auto' as Theme,
  language: 'zh-CN' as Language,
  notificationsEnabled: true,
  soundEnabled: true,
  hapticsEnabled: true,
};

/**
 * 设置状态 Store
 */
export const useSettingsStore = create<SettingsState>()((set, get) => ({
  // 初始状态
  ...DEFAULT_SETTINGS,

  // 设置主题
  setTheme: (theme) => {
    set({ theme });
    // 手动持久化
    AsyncStorage.setItem('settings-storage', JSON.stringify(get()));
    if (__DEV__) {
      console.log('🎨 Theme changed:', theme);
    }
  },

  // 设置语言
  setLanguage: (language) => {
    set({ language });
    // 手动持久化
    AsyncStorage.setItem('settings-storage', JSON.stringify(get()));
    if (__DEV__) {
      console.log('🌐 Language changed:', language);
    }
  },

  // 设置通知开关
  setNotificationsEnabled: (enabled) => {
    set({ notificationsEnabled: enabled });
    // 手动持久化
    AsyncStorage.setItem('settings-storage', JSON.stringify(get()));
    if (__DEV__) {
      console.log('🔔 Notifications:', enabled ? 'enabled' : 'disabled');
    }
  },

  // 设置声音开关
  setSoundEnabled: (enabled) => {
    set({ soundEnabled: enabled });
    // 手动持久化
    AsyncStorage.setItem('settings-storage', JSON.stringify(get()));
    if (__DEV__) {
      console.log('🔊 Sound:', enabled ? 'enabled' : 'disabled');
    }
  },

  // 设置触觉反馈开关
  setHapticsEnabled: (enabled) => {
    set({ hapticsEnabled: enabled });
    // 手动持久化
    AsyncStorage.setItem('settings-storage', JSON.stringify(get()));
    if (__DEV__) {
      console.log('📳 Haptics:', enabled ? 'enabled' : 'disabled');
    }
  },

  // 重置所有设置
  resetSettings: () => {
    set(DEFAULT_SETTINGS);
    // 手动持久化
    AsyncStorage.setItem('settings-storage', JSON.stringify(DEFAULT_SETTINGS));
    if (__DEV__) {
      console.log('🔄 Settings reset to default');
    }
  },
}));

// 从 AsyncStorage 恢复状态的函数
export const restoreSettingsState = async () => {
  try {
    const stored = await AsyncStorage.getItem('settings-storage');
    if (stored) {
      const state = JSON.parse(stored);
      useSettingsStore.setState(state);
      if (__DEV__) {
        console.log('✅ Settings state restored from storage');
      }
    }
  } catch (error) {
    console.error('Failed to restore settings state:', error);
  }
};

/**
 * 选择器 Hooks
 */

// 获取主题
export const useTheme = () => useSettingsStore((state) => state.theme);

// 获取语言
export const useLanguage = () => useSettingsStore((state) => state.language);

// 获取通知状态
export const useNotificationsEnabled = () =>
  useSettingsStore((state) => state.notificationsEnabled);

// 获取声音状态
export const useSoundEnabled = () => useSettingsStore((state) => state.soundEnabled);

// 获取触觉反馈状态
export const useHapticsEnabled = () => useSettingsStore((state) => state.hapticsEnabled);

// 获取设置操作方法
// 使用 useShallow 避免每次渲染都返回新对象
export const useSettingsActions = () =>
  useSettingsStore(
    useShallow((state) => ({
      setTheme: state.setTheme,
      setLanguage: state.setLanguage,
      setNotificationsEnabled: state.setNotificationsEnabled,
      setSoundEnabled: state.setSoundEnabled,
      setHapticsEnabled: state.setHapticsEnabled,
      resetSettings: state.resetSettings,
    }))
  );