test pds oauth did

oauth/src/utils/validation.ts

@@ -0,0 +1,21 @@
+// Validation utilities for atproto identifiers
+
+export function isValidDid(did: string): boolean {
+  if (!did || typeof did !== 'string') return false;
+  
+  // Basic DID format: did:method:identifier
+  const didRegex = /^did:[a-z]+:[a-zA-Z0-9._%-]+$/;
+  return didRegex.test(did);
+}
+
+export function isValidHandle(handle: string): boolean {
+  if (!handle || typeof handle !== 'string') return false;
+  
+  // Basic handle format: subdomain.domain.tld
+  const handleRegex = /^([a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?\.)+[a-zA-Z]{2,}$/;
+  return handleRegex.test(handle);
+}
+
+export function isValidAtprotoIdentifier(identifier: string): boolean {
+  return isValidDid(identifier) || isValidHandle(identifier);
+}