client/src/components/ErrorBoundary.tsx

import React, { Component, ErrorInfo, ReactNode } from 'react';

interface Props {
  children: ReactNode;
}

interface State {
  hasError: boolean;
  error: Error | null;
}

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

  public static getDerivedStateFromError(error: Error): State {
    return { hasError: true, error };
  }

  public componentDidCatch(error: Error, errorInfo: ErrorInfo) {
    console.error('Error caught by boundary:', error, errorInfo);
  }

  public render() {
    if (this.state.hasError) {
      return (
        <div className="min-h-screen flex items-center justify-center bg-gray-50 dark:bg-gray-900">
          <div className="max-w-md w-full bg-white dark:bg-gray-800 shadow-lg rounded-lg p-6">
            <div className="flex items-center">
              <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 8v4m0 4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z" />
                </svg>
              </div>
              <div className="ml-3">
                <h3 className="text-sm font-medium text-gray-800 dark:text-gray-200">
                  Something went wrong
                </h3>
                <div className="mt-2 text-sm text-gray-500 dark:text-gray-400">
                  <p>The application encountered an unexpected error. Please refresh the page and try again.</p>
                </div>
                <div className="mt-4">
                  <button
                    onClick={() => window.location.reload()}
                    className="bg-red-100 hover:bg-red-200 dark:bg-red-900 dark:hover:bg-red-800 text-red-800 dark:text-red-200 px-4 py-2 rounded text-sm font-medium transition-colors"
                  >
                    Refresh Page
                  </button>
                </div>
              </div>
            </div>
            {process.env.NODE_ENV === 'development' && this.state.error && (
              <div className="mt-4 p-4 bg-gray-100 dark:bg-gray-700 rounded">
                <details>
                  <summary className="text-sm font-medium text-gray-700 dark:text-gray-300 cursor-pointer">
                    Error Details (Development)
                  </summary>
                  <pre className="mt-2 text-xs text-gray-600 dark:text-gray-400 overflow-auto">
                    {this.state.error.stack}
                  </pre>
                </details>
              </div>
            )}
          </div>
        </div>
      );
    }

    return this.props.children;
  }
}

export default ErrorBoundary;