import { Component, ErrorInfo, ReactNode } from "react";

interface Props {
  children: ReactNode;
}

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

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

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

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

  render() {
    if (this.state.hasError && this.state.error) {
      return (
        <div style={{ padding: "2rem", maxWidth: 900, margin: "0 auto", fontFamily: "Arial", color: "#333" }}>
          <h1 style={{ color: "#c0392b", marginBottom: "1rem" }}>Something went wrong</h1>
          <pre style={{ background: "#f7f7f7", padding: "1rem", overflow: "auto", fontSize: 13 }}>
            {this.state.error.message}
          </pre>
          <button
            type="button"
            onClick={() => this.setState({ hasError: false, error: null })}
            style={{ marginTop: "1rem", padding: "8px 16px", cursor: "pointer" }}
          >
            Try again
          </button>
        </div>
      );
    }
    return this.props.children;
  }
}
