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

interface Props {
  children: ReactNode;
  fallback?: ReactNode;
}

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

class ErrorBoundary extends Component<Props, State> {
  declare state: State;
  declare props: Props;
  declare setState: (state: Partial<State> | ((prevState: State) => Partial<State>)) => void;

  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): void {
    console.error('ErrorBoundary caught an error:', error, errorInfo);
  }

  handleReset = (): void => {
    this.setState({
      hasError: false,
      error: null
    });
  };

  render(): ReactNode {
    if (this.state.hasError) {
      if (this.props.fallback) {
        return this.props.fallback;
      }

      return (
        <div className="flex items-center justify-center min-h-screen bg-gradient-to-br from-gray-900 to-black text-white p-8">
          <div className="max-w-md w-full bg-white/10 backdrop-blur-md rounded-2xl p-8 border border-white/20 shadow-2xl">
            <div className="flex items-center justify-center w-16 h-16 mx-auto mb-6 bg-red-500/20 rounded-full">
              <svg className="w-8 h-8 text-red-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-3L13.732 4c-.77-1.333-2.694-1.333-3.464 0L3.34 16c-.77 1.333.192 3 1.732 3z" />
              </svg>
            </div>

            <h1 className="text-2xl font-bold text-center mb-4">Something went wrong</h1>

            <p className="text-white/70 text-center mb-6">
              The application encountered an unexpected error. Please try refreshing the page or resetting the app.
            </p>

            {this.state.error && (
              <div className="mb-6 p-4 bg-black/30 rounded-lg border border-white/10">
                <p className="text-sm text-red-300 font-mono break-all">
                  {this.state.error.message}
                </p>
              </div>
            )}

            <div className="flex gap-3">
              <button
                onClick={this.handleReset}
                className="flex-1 px-4 py-3 bg-white/10 hover:bg-white/20 rounded-lg border border-white/20 hover:border-white/30 transition-all duration-200 font-medium"
              >
                Retry
              </button>
              <button
                onClick={() => window.location.reload()}
                className="flex-1 px-4 py-3 bg-blue-500/80 hover:bg-blue-500 rounded-lg border border-blue-400/30 hover:border-blue-400/50 transition-all duration-200 font-medium"
              >
                Refresh Page
              </button>
            </div>
          </div>
        </div>
      );
    }

    return this.props.children;
  }
}

export default ErrorBoundary;