import preferences from '@ohos.data.preferences';
import { hilog } from '@kit.PerformanceAnalysisKit';
import { WidgetSize, WidgetTheme, WidgetConfig } from './WidgetTypes';
import { ObjectUtils } from './ObjectUtils';

const TAG = 'WidgetConfigManager';
const CONFIG_PREFERENCES_NAME = 'widget_config_prefs';

/**
 * 卡片个性化配置接口
 */
export interface WidgetPersonalConfig {
  // 显示配置
  showProgress: boolean;
  showCover: boolean;
  showAlbum: boolean;
  showTime: boolean;
  
  // 主题配置
  theme: WidgetTheme;
  backgroundColor: string;
  textColor: string;
  accentColor: string;
  
  // 布局配置
  buttonSize: 'small' | 'medium' | 'large';
  fontSize: 'small' | 'medium' | 'large';
  borderRadius: number;
  
  // 行为配置
  autoUpdate: boolean;
  updateInterval: number;
  clickBehavior: 'play_pause' | 'open_app' | 'open_player';
  
  // 高级配置
  enableAnimations: boolean;
  enableHapticFeedback: boolean;
  enableShadow: boolean;
}

/**
 * 用户偏好设置接口
 */
export interface UserPreferences {
  // 全局偏好
  defaultTheme: WidgetTheme;
  defaultSize: WidgetSize;
  
  // 同步设置
  syncWithMainApp: boolean;
  syncThemeColor: boolean;
  
  // 性能设置
  enableCache: boolean;
  cacheExpiry: number;
  
  // 隐私设置
  showSongInfo: boolean;
  showArtistInfo: boolean;
  showAlbumCover: boolean;
}

/**
 * 卡片配置管理器
 * 负责卡片个性化设置和用户偏好管理
 * 需求: 5.4, 6.3
 */
export class WidgetConfigManager {
  private static instance: WidgetConfigManager;
  private preferencesStore: preferences.Preferences | null = null;
  private configCache: Map<string, WidgetPersonalConfig> = new Map();
  private userPreferences: UserPreferences | null = null;

  /**
   * 获取单例实例
   */
  public static getInstance(): WidgetConfigManager {
    if (!WidgetConfigManager.instance) {
      WidgetConfigManager.instance = new WidgetConfigManager();
    }
    return WidgetConfigManager.instance;
  }

  private constructor() {
    this.initPreferences();
    hilog.info(0x0000, TAG, 'WidgetConfigManager initialized');
  }

  /**
   * 初始化配置存储
   */
  private async initPreferences(): Promise<void> {
    try {
      this.preferencesStore = await preferences.getPreferences(getContext(), CONFIG_PREFERENCES_NAME);
      await this.loadUserPreferences();
      hilog.info(0x0000, TAG, 'Config preferences initialized successfully');
    } catch (error) {
      hilog.error(0x0000, TAG, `Failed to initialize config preferences: ${error}`);
    }
  }

  /**
   * 获取卡片个性化配置
   * @param formId 卡片ID
   * @param size 卡片尺寸
   * @returns 个性化配置
   */
  public async getWidgetConfig(formId: string, size: WidgetSize): Promise<WidgetPersonalConfig> {
    // 先从缓存获取
    const cacheKey = `${formId}_${size}`;
    if (this.configCache.has(cacheKey)) {
      return this.configCache.get(cacheKey)!;
    }

    try {
      if (!this.preferencesStore) {
        await this.initPreferences();
      }

      const configKey = `config_${formId}`;
      const configStr = await this.preferencesStore?.get(configKey, '') as string;
      
      let config: WidgetPersonalConfig;
      if (configStr) {
        config = JSON.parse(configStr) as WidgetPersonalConfig;
      } else {
        config = this.getDefaultConfig(size);
      }

      // 应用主题色彩同步
      if (this.userPreferences?.syncThemeColor) {
        config = await this.syncThemeColors(config);
      }

      // 缓存配置
      this.configCache.set(cacheKey, config);
      
      hilog.info(0x0000, TAG, `Widget config loaded for form: ${formId}`);
      return config;
    } catch (error) {
      hilog.error(0x0000, TAG, `Failed to get widget config: ${error}`);
      return this.getDefaultConfig(size);
    }
  }

  /**
   * 保存卡片个性化配置
   * @param formId 卡片ID
   * @param size 卡片尺寸
   * @param config 配置对象
   */
  public async saveWidgetConfig(formId: string, size: WidgetSize, config: WidgetPersonalConfig): Promise<void> {
    try {
      if (!this.preferencesStore) {
        await this.initPreferences();
      }

      const configKey = `config_${formId}`;
      await this.preferencesStore?.put(configKey, JSON.stringify(config));
      await this.preferencesStore?.flush();

      // 更新缓存
      const cacheKey = `${formId}_${size}`;
      this.configCache.set(cacheKey, config);

      hilog.info(0x0000, TAG, `Widget config saved for form: ${formId}`);
    } catch (error) {
      hilog.error(0x0000, TAG, `Failed to save widget config: ${error}`);
    }
  }

  /**
   * 获取用户偏好设置
   */
  public async getUserPreferences(): Promise<UserPreferences> {
    if (this.userPreferences) {
      return this.userPreferences;
    }

    await this.loadUserPreferences();
    return this.userPreferences || this.getDefaultUserPreferences();
  }

  /**
   * 保存用户偏好设置
   * @param preferences 用户偏好
   */
  public async saveUserPreferences(preferences: UserPreferences): Promise<void> {
    try {
      if (!this.preferencesStore) {
        await this.initPreferences();
      }

      await this.preferencesStore?.put('user_preferences', JSON.stringify(preferences));
      await this.preferencesStore?.flush();

      this.userPreferences = preferences;

      hilog.info(0x0000, TAG, 'User preferences saved successfully');
    } catch (error) {
      hilog.error(0x0000, TAG, `Failed to save user preferences: ${error}`);
    }
  }

  /**
   * 同步主题色彩
   * @param config 当前配置
   * @returns 同步后的配置
   */
  public async syncThemeColors(config: WidgetPersonalConfig): Promise<WidgetPersonalConfig> {
    try {
      // 从主应用获取主题色彩
      const mainAppTheme = await this.getMainAppTheme();
      
      if (mainAppTheme) {
        const updatedConfig = ObjectUtils.cloneWidgetConfig(config);
        updatedConfig.theme = mainAppTheme.theme;
        updatedConfig.backgroundColor = mainAppTheme.backgroundColor;
        updatedConfig.textColor = mainAppTheme.textColor;
        updatedConfig.accentColor = mainAppTheme.accentColor;
        return updatedConfig;
      }
    } catch (error) {
      hilog.error(0x0000, TAG, `Failed to sync theme colors: ${error}`);
    }

    return config;
  }

  /**
   * 重置卡片配置为默认值
   * @param formId 卡片ID
   * @param size 卡片尺寸
   */
  public async resetWidgetConfig(formId: string, size: WidgetSize): Promise<void> {
    const defaultConfig = this.getDefaultConfig(size);
    await this.saveWidgetConfig(formId, size, defaultConfig);
    
    hilog.info(0x0000, TAG, `Widget config reset to default for form: ${formId}`);
  }

  /**
   * 批量更新所有卡片配置
   * @param updateFn 更新函数
   */
  public async updateAllWidgetConfigs(updateFn: (config: WidgetPersonalConfig) => WidgetPersonalConfig): Promise<void> {
    try {
      if (!this.preferencesStore) {
        await this.initPreferences();
      }

      const allKeys = await this.preferencesStore?.getAll();
      const allKeysRecord: Record<string, Object> = allKeys as Record<string, Object> || {};
      const configKeys = Object.keys(allKeysRecord).filter(key => key.startsWith('config_'));

      for (let i = 0; i < configKeys.length; i++) {
        const key = configKeys[i];
        const configStr = allKeysRecord[key] as string;
        if (configStr) {
          const config = JSON.parse(configStr) as WidgetPersonalConfig;
          const updatedConfig = updateFn(config);
          await this.preferencesStore?.put(key, JSON.stringify(updatedConfig));
        }
      }

      await this.preferencesStore?.flush();
      
      // 清除缓存以强制重新加载
      this.configCache.clear();

      hilog.info(0x0000, TAG, `Updated ${configKeys.length} widget configs`);
    } catch (error) {
      hilog.error(0x0000, TAG, `Failed to update all widget configs: ${error}`);
    }
  }

  /**
   * 删除卡片配置
   * @param formId 卡片ID
   */
  public async removeWidgetConfig(formId: string): Promise<void> {
    try {
      if (!this.preferencesStore) {
        await this.initPreferences();
      }

      const configKey = `config_${formId}`;
      await this.preferencesStore?.delete(configKey);
      await this.preferencesStore?.flush();

      // 清除相关缓存
      const keysToRemove: string[] = [];
      const cacheKeys = Array.from(this.configCache.keys());
      for (let i = 0; i < cacheKeys.length; i++) {
        const key = cacheKeys[i];
        if (key.startsWith(formId)) {
          keysToRemove.push(key);
        }
      }
      for (let i = 0; i < keysToRemove.length; i++) {
        this.configCache.delete(keysToRemove[i]);
      }

      hilog.info(0x0000, TAG, `Widget config removed for form: ${formId}`);
    } catch (error) {
      hilog.error(0x0000, TAG, `Failed to remove widget config: ${error}`);
    }
  }

  /**
   * 获取默认配置
   */
  private getDefaultConfig(size: WidgetSize): WidgetPersonalConfig {
    const baseConfig: WidgetPersonalConfig = {
      // 显示配置
      showProgress: true,
      showCover: true,
      showAlbum: true,
      showTime: true,
      
      // 主题配置
      theme: WidgetTheme.AUTO,
      backgroundColor: '#FFFFFF',
      textColor: '#E6000000',
      accentColor: '#FF007DFF',
      
      // 布局配置
      buttonSize: 'medium',
      fontSize: 'medium',
      borderRadius: 12,
      
      // 行为配置
      autoUpdate: true,
      updateInterval: 1000,
      clickBehavior: 'play_pause',
      
      // 高级配置
      enableAnimations: true,
      enableHapticFeedback: true,
      enableShadow: true
    };

    // 根据尺寸调整默认配置
    if (size === WidgetSize.SMALL) {
      const smallConfig = ObjectUtils.cloneWidgetConfig(baseConfig);
      smallConfig.showProgress = false;
      smallConfig.showCover = false;
      smallConfig.showAlbum = false;
      smallConfig.showTime = false;
      smallConfig.buttonSize = 'small';
      smallConfig.fontSize = 'small';
      smallConfig.borderRadius = 8;
      return smallConfig;
    } else if (size === WidgetSize.MEDIUM) {
      const mediumConfig = ObjectUtils.cloneWidgetConfig(baseConfig);
      mediumConfig.showCover = false;
      mediumConfig.buttonSize = 'medium';
      mediumConfig.fontSize = 'medium';
      mediumConfig.borderRadius = 12;
      return mediumConfig;
    } else if (size === WidgetSize.LARGE) {
      const largeConfig = ObjectUtils.cloneWidgetConfig(baseConfig);
      largeConfig.buttonSize = 'large';
      largeConfig.fontSize = 'large';
      largeConfig.borderRadius = 16;
      return largeConfig;
    } else {
      return baseConfig;
    }
  }

  /**
   * 获取默认用户偏好
   */
  private getDefaultUserPreferences(): UserPreferences {
    return {
      // 全局偏好
      defaultTheme: WidgetTheme.AUTO,
      defaultSize: WidgetSize.MEDIUM,
      
      // 同步设置
      syncWithMainApp: true,
      syncThemeColor: true,
      
      // 性能设置
      enableCache: true,
      cacheExpiry: 30000,
      
      // 隐私设置
      showSongInfo: true,
      showArtistInfo: true,
      showAlbumCover: true
    };
  }

  /**
   * 加载用户偏好设置
   */
  private async loadUserPreferences(): Promise<void> {
    try {
      if (!this.preferencesStore) {
        return;
      }

      const prefsStr = await this.preferencesStore.get('user_preferences', '') as string;
      if (prefsStr) {
        this.userPreferences = JSON.parse(prefsStr) as UserPreferences;
      } else {
        this.userPreferences = this.getDefaultUserPreferences();
      }
    } catch (error) {
      hilog.error(0x0000, TAG, `Failed to load user preferences: ${error}`);
      this.userPreferences = this.getDefaultUserPreferences();
    }
  }

  /**
   * 从主应用获取主题信息
   */
  private async getMainAppTheme(): Promise<MainAppTheme | null> {
    try {
      // 这里应该从主应用的主题管理器获取主题信息
      // 暂时返回默认主题
      return {
        theme: WidgetTheme.AUTO,
        backgroundColor: '#FFFFFF',
        textColor: '#E6000000',
        accentColor: '#FF007DFF'
      };
    } catch (error) {
      hilog.error(0x0000, TAG, `Failed to get main app theme: ${error}`);
      return null;
    }
  }
}

/**
 * 主应用主题接口
 */
interface MainAppTheme {
  theme: WidgetTheme;
  backgroundColor: string;
  textColor: string;
  accentColor: string;
}