import React from "react";

interface IErrorBoundaryProps {
  children?: React.ReactNode;
}

type ErrorInfo = {
  componentStack: string;
};

interface IErrorBoundaryState {
  error?: Error;
  errorInfo?: ErrorInfo;
}

export class ErrorBoundary extends React.Component<
  IErrorBoundaryProps,
  IErrorBoundaryState
> {
  constructor(props: IErrorBoundaryProps) {
    super(props);
    this.state = {};
  }

  public componentDidCatch(error: Error, errorInfo: ErrorInfo) {
    this.setState({
      error,
      errorInfo
    });
  }

  public render() {
    if (this.state.errorInfo) {
      // Error path
      return (
        <div>
          <h2>Something went wrong.</h2>
          <details className="error-message">
            {this.state.error && this.state.error.toString()}
            <br />
            {this.state.errorInfo.componentStack}
          </details>
        </div>
      );
    }

    // Normally, just render children
    return this.props.children;
  }
}
