import React, { Component, ErrorInfo, ReactNode } from 'react';
import { createRoot } from 'react-dom/client';
import App from './App.tsx';
import { SnackbarProvider } from './context/SnackbarContext.tsx';
import './index.css';

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("Uncaught Error Boundary catch:", error, errorInfo);
  }

  public render() {
    if (this.state.hasError) {
      return (
        <div style={{ padding: '2rem', fontFamily: 'sans-serif', maxWidth: '600px', margin: '4rem auto', backgroundColor: '#fff', borderRadius: '1rem', border: '1px solid #e2e8f0', boxShadow: '0 10px 15px -3px rgba(0,0,0,0.1)' }}>
          <h2 style={{ color: '#ef4444', fontSize: '1.25rem', fontWeight: 'bold' }}>Application Startup Notice</h2>
          <p style={{ color: '#475569', fontSize: '0.875rem', marginTop: '0.5rem' }}>An error occurred during application load:</p>
          <pre style={{ backgroundColor: '#f8fafc', padding: '1rem', borderRadius: '0.5rem', fontSize: '0.75rem', overflowX: 'auto', color: '#334155', marginTop: '1rem' }}>
            {this.state.error?.message || "Unknown error"}
          </pre>
          <button
            onClick={() => window.location.reload()}
            style={{ marginTop: '1.5rem', backgroundColor: '#4f46e5', color: '#fff', border: 'none', padding: '0.6rem 1.2rem', borderRadius: '0.5rem', cursor: 'pointer', fontWeight: 'bold' }}
          >
            Reload Application
          </button>
        </div>
      );
    }

    return this.props.children;
  }
}

createRoot(document.getElementById('root')!).render(
  <React.StrictMode>
    <ErrorBoundary>
      <SnackbarProvider>
        <App />
      </SnackbarProvider>
    </ErrorBoundary>
  </React.StrictMode>,
);