certctl/web/src/components/ErrorBoundary.tsx

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

interface Props {
  children: ReactNode;
}

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

export default class ErrorBoundary extends Component<Props, State> {
  constructor(props: Props) {
    super(props);
    this.state = { hasError: false, error: null };
  }

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

  componentDidCatch(error: Error, errorInfo: ErrorInfo) {
    console.error('Uncaught component error:', error, errorInfo);
  }

  render() {
    if (this.state.hasError) {
      return (
        <div className="flex items-center justify-center min-h-screen bg-page">
          <div className="text-center p-8">
            <h1 className="text-xl font-semibold text-red-700 mb-2">Something went wrong</h1>
            <p className="text-sm text-ink-muted mb-4">
              {this.state.error?.message || 'An unexpected error occurred'}
            </p>
            <button
              onClick={() => {
                this.setState({ hasError: false, error: null });
                window.location.reload();
              }}
              className="px-4 py-2 bg-brand-500 text-white rounded text-sm hover:bg-brand-600"
            >
              Reload Page
            </button>
          </div>
        </div>
      );
    }
    return this.props.children;
  }
}