Change permissions for previews

Author: egeakman

public/robots.txt

@@ -0,0 +1,19 @@
+import type { APIRoute } from "astro";
+
+const previewRobots = `
+User-agent: *
+Disallow: /
+`;
+
+const prodRobots = `
+User-agent: *
+Disallow: /_astro/
+Disallow: /*?
+Allow: /
+
+Sitemap: https://ep2025.europython.eu/sitemap-index.xml
+`;
+
+const isPreview = import.meta.env.PREVIEW?.toLowerCase() === "true";
+export const GET: APIRoute = () =>
+  new Response(isPreview ? previewRobots : prodRobots);