import React from "react";
import ReactDOM from "react-dom/client";
import "./index.css";
import App from "./App.tsx";

class ErrorBoundary extends React.Component<
  { children: React.ReactNode },
  { hasError: boolean; error: Error | null }
> {
  constructor(props: { children: React.ReactNode }) {
    super(props);
    this.state = { hasError: false, error: null };
  }

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

  componentDidCatch(error: Error, errorInfo: React.ErrorInfo) {
    console.error("CRM Error:", error, errorInfo);
  }

  render() {
    if (this.state.hasError) {
      return (
        <div style={{ padding: 20, fontFamily: 'system-ui, sans-serif', maxWidth: 600 }}>
          <h2 style={{ color: '#ef4444', marginBottom: 12 }}>Ошибка загрузки приложения</h2>
          <pre style={{ background: '#f3f4f6', padding: 12, borderRadius: 8, overflow: 'auto', fontSize: 12, whiteSpace: 'pre-wrap' }}>
            {this.state.error?.message}
            {'\n\n'}
            {this.state.error?.stack}
          </pre>
          <button
            onClick={() => window.location.reload()}
            style={{
              marginTop: 12,
              padding: '10px 20px',
              background: '#3b82f6',
              color: 'white',
              border: 'none',
              borderRadius: 10,
              cursor: 'pointer',
              fontSize: 14,
            }}
          >
            Перезагрузить страницу
          </button>
        </div>
      );
    }
    return this.props.children;
  }
}

const rootElement = document.getElementById("root");
if (rootElement) {
  const root = ReactDOM.createRoot(rootElement);
  root.render(
    <ErrorBoundary>
      <App />
    </ErrorBoundary>
  );
}