SPARC/frontend/src/components/ProtectedRoute.tsx

import { Navigate, useLocation } from 'react-router-dom';
import { useAuth } from '../context/AuthContext';

interface ProtectedRouteProps {
  children: React.ReactNode;
  requireAdmin?: boolean;
}

export function ProtectedRoute({ children, requireAdmin = false }: ProtectedRouteProps) {
  const { isAuthenticated, isAdmin, isLoading } = useAuth();
  const location = useLocation();

  if (isLoading) {
    return (
      <div className="min-h-screen bg-gradient-to-br from-bg-dark to-indigo-950 flex items-center justify-center">
        <div className="animate-spin rounded-full h-12 w-12 border-t-2 border-b-2 border-primary"></div>
      </div>
    );
  }

  if (!isAuthenticated) {
    return <Navigate to="/login" state={{ from: location }} replace />;
  }

  if (requireAdmin && !isAdmin) {
    return <Navigate to="/analysis" replace />;
  }

  return <>{children}</>;
}