Rewrite Demonstration

---
// Show localized content based on region
const region = getRegionFromIP(Astro.clientAddress);

if (region === 'EU') {
  return Astro.rewrite('/eu/privacy-policy');
}

if (region === 'CA') {
  return Astro.rewrite('/ca/privacy-policy');
}
---

<h1>Default Privacy Policy</h1>

// src/middleware.ts
export const onRequest = async (context, next) => {
  const url = new URL(context.request.url);
  
  // A/B testing
  if (url.pathname === '/landing' && Math.random() < 0.5) {
    return context.rewrite('/landing-variant-b');
  }
  
  // Handle 404s gracefully
  const response = await next();
  if (response.status === 404) {
    return context.rewrite('/custom-404');
  }
  
  return response;
};