import React from 'react';
import { Navigate } from 'react-router-dom';
import { useAuth } from '../../contexts/AuthContext';
import { Box, CircularProgress, Typography } from '@mui/material';

interface ProtectedRouteProps {
  children: React.ReactNode;
}

const ProtectedRoute: React.FC<ProtectedRouteProps> = ({ children }) => {
  const { isAuthenticated, isLoading } = useAuth();

  // Show loading spinner while checking authentication
  if (isLoading) {
    return (
      <Box
        sx={{
          display: 'flex',
          flexDirection: 'column',
          alignItems: 'center',
          justifyContent: 'center',
          minHeight: '100vh',
          gap: 2,
        }}
      >
        <CircularProgress size={60} />
        <Typography variant="h6" color="text.secondary">
          Authentifizierung wird überprüft...
        </Typography>
      </Box>
    );
  }

  // If not authenticated, redirect to login
  if (!isAuthenticated) {
    return <Navigate to="/login" replace state={{ from: window.location.pathname + window.location.search }} />;
  }

  // User is authenticated, render children
  return <>{children}</>;
};

export default ProtectedRoute;