// 配置管理工具
export class ConfigManager {
  constructor() {
    this.config = null;
  }

  // 异步加载配置文件
  async loadConfig() {
    try {
      const response = await fetch('/config.json');
      if (!response.ok) {
        throw new Error('Failed to load config');
      }
      this.config = await response.json();
      return this.config;
    } catch (error) {
      console.error('Error loading config:', error);
      // 返回默认配置
      return this.getDefaultConfig();
    }
  }

  // 获取默认配置
  getDefaultConfig() {
    return {
      screen: {
        width: 5120,
        height: 1440,
        title: "智慧活畜交易大数据中心"
      },
      dashboard: {
        refreshInterval: 5000,
        animationDuration: 300
      }
    };
  }

  // 获取屏幕配置
  getScreenConfig() {
    return this.config?.screen || this.getDefaultConfig().screen;
  }

  // 获取仪表板配置
  getDashboardConfig() {
    return this.config?.dashboard || this.getDefaultConfig().dashboard;
  }

  // 设置CSS变量
  setCSSVariables() {
    const screenConfig = this.getScreenConfig();
    const root = document.documentElement;
    
    root.style.setProperty('--screen-width', `${screenConfig.width}px`);
    root.style.setProperty('--screen-height', `${screenConfig.height}px`);
  }
}

// 创建全局配置管理器实例
export const configManager = new ConfigManager();