Phase8

packages/dns/src/slug.ts

@@ -0,0 +1,34 @@
+export function buildJoinSlug(serverName: string, serverId: string): string {
+  const base =
+    serverName
+      .toLowerCase()
+      .normalize('NFD')
+      .replace(/[\u0300-\u036f]/g, '')
+      .replace(/[^a-z0-9]+/g, '-')
+      .replace(/^-+|-+$/g, '')
+      .slice(0, 24) || 'server';
+
+  const suffix = serverId.replace(/-/g, '').slice(0, 6);
+  return `${base}-${suffix}`;
+}
+
+export function extractSlugFromHostname(hostname: string, playDomain: string): string | null {
+  const normalizedHost = hostname.split('\0')[0]?.toLowerCase() ?? '';
+  const normalizedDomain = playDomain.toLowerCase();
+
+  if (normalizedHost === normalizedDomain) {
+    return null;
+  }
+
+  const suffix = `.${normalizedDomain}`;
+  if (!normalizedHost.endsWith(suffix)) {
+    return null;
+  }
+
+  const slug = normalizedHost.slice(0, -suffix.length);
+  if (!slug || slug.includes('.')) {
+    return null;
+  }
+
+  return slug;
+}