import React, { Component, ErrorInfo, ReactNode } from 'react';
import { hydrationDebug } from '../utils/hydrationDebug';

interface Props {
  children: ReactNode;
  fallback?: ReactNode;
}

interface State {
  hasError: boolean;
  error?: Error;
}

class ErrorBoundary extends Component<Props, State> {
  public state: State = {
    hasError: false,
  };

  public static getDerivedStateFromError(error: Error): State {
    // 更新 state 使下一次渲染能够显示降级后的 UI
    return { hasError: true, error };
  }

  public componentDidCatch(error: Error, errorInfo: ErrorInfo) {
    console.error('ErrorBoundary caught an error:', error, errorInfo);
    
    // 使用调试工具记录水合错误
    if (error.message.includes('hydration') || error.message.includes('Hydration')) {
      hydrationDebug.logHydrationError(error, 'ErrorBoundary');
    }
  }

  public render() {
    if (this.state.hasError) {
      // 自定义降级 UI
      if (this.props.fallback) {
        return this.props.fallback;
      }

      return (
        <div className="min-h-screen flex items-center justify-center bg-gray-50">
          <div className="max-w-md w-full bg-white shadow-lg rounded-lg p-6">
            <div className="flex items-center mb-4">
              <div className="flex-shrink-0">
                <svg className="h-8 w-8 text-red-500" fill="none" viewBox="0 0 24 24" stroke="currentColor">
                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-2.5L13.732 4c-.77-.833-1.732-.833-2.5 0L4.268 18.5c-.77.833.192 2.5 1.732 2.5z" />
                </svg>
              </div>
              <div className="ml-3">
                <h3 className="text-lg font-medium text-gray-900">
                  页面加载出错
                </h3>
              </div>
            </div>
            <div className="mb-4">
              <p className="text-sm text-gray-600">
                抱歉，页面加载时出现了问题。这可能是由于网络连接或浏览器兼容性问题导致的。
              </p>
              {this.state.error?.message.includes('hydration') && (
                <p className="text-sm text-amber-600 mt-2">
                  检测到水合错误。请尝试刷新页面或清除浏览器缓存。
                </p>
              )}
            </div>
            <div className="flex space-x-3">
              <button
                onClick={() => window.location.reload()}
                className="flex-1 bg-blue-600 text-white px-4 py-2 rounded-md hover:bg-blue-700 focus:outline-none focus:ring-2 focus:ring-blue-500"
              >
                刷新页面
              </button>
              <button
                onClick={() => window.history.back()}
                className="flex-1 bg-gray-300 text-gray-700 px-4 py-2 rounded-md hover:bg-gray-400 focus:outline-none focus:ring-2 focus:ring-gray-500"
              >
                返回上一页
              </button>
            </div>
            {process.env.NODE_ENV === 'development' && this.state.error && (
              <details className="mt-4">
                <summary className="text-sm text-gray-500 cursor-pointer">
                  查看错误详情
                </summary>
                <pre className="mt-2 text-xs text-red-600 bg-red-50 p-2 rounded overflow-auto">
                  {this.state.error.message}
                  {this.state.error.stack}
                </pre>
              </details>
            )}
          </div>
        </div>
      );
    }

    return this.props.children;
  }
}

export default ErrorBoundary;