fix

oauth/src/services/atproto-oauth.ts

@@ -41,6 +41,7 @@ class AtprotoOAuthService {
       this.oauthClient = await BrowserOAuthClient.load({
         clientId: clientId,
         handleResolver: 'https://bsky.social', // Default resolver
+        plcDirectoryUrl: 'https://plc.directory', // Default PLC directory
       });
       
 
@@ -176,20 +177,43 @@ class AtprotoOAuthService {
     return `${origin}/client-metadata.json`;
   }
 
-  private detectPDSFromHandle(handle: string): string {
-    // Supported PDS hosts and their corresponding handles
+  private async detectPDSFromHandle(handle: string): Promise<string> {
+    // Handle detection for OAuth PDS routing
+    
+    // Check if handle ends with known PDS domains first
     const pdsMapping = {
       'syu.is': 'https://syu.is',
       'bsky.social': 'https://bsky.social',
     };
     
-    // Check if handle ends with known PDS domains
     for (const [domain, pdsUrl] of Object.entries(pdsMapping)) {
       if (handle.endsWith(`.${domain}`)) {
         return pdsUrl;
       }
     }
     
+    // For handles that don't match domain patterns, resolve via API
+    try {
+      // Try to resolve handle to get the actual PDS
+      const endpoints = ['https://syu.is', 'https://bsky.social'];
+      
+      for (const endpoint of endpoints) {
+        try {
+          const response = await fetch(`${endpoint}/xrpc/com.atproto.identity.resolveHandle?handle=${encodeURIComponent(handle)}`);
+          if (response.ok) {
+            const data = await response.json();
+            if (data.did) {
+              return endpoint;
+            }
+          }
+        } catch (e) {
+          continue;
+        }
+      }
+    } catch (e) {
+      // Handle resolution failed, using default
+    }
+    
     // Default to bsky.social
     return 'https://bsky.social';
   }
@@ -217,9 +241,13 @@ class AtprotoOAuthService {
       
       // Re-initialize OAuth client with correct PDS if needed
       if (pdsUrl !== 'https://bsky.social') {
+        // Determine PLC directory for syu.is only
+        const plcDirectoryUrl = handle.endsWith('.syu.is') || handle.endsWith('.syui.ai') ? 'https://plc.syu.is' : 'https://plc.directory';
+        
         this.oauthClient = await BrowserOAuthClient.load({
           clientId: this.getClientId(),
           handleResolver: pdsUrl,
+          plcDirectoryUrl: plcDirectoryUrl,
         });
       }
       
@@ -591,10 +619,4 @@ class AtprotoOAuthService {
 }
 
 export const atprotoOAuthService = new AtprotoOAuthService();
-
-// Debug: Make service available globally for testing
-if (typeof window !== 'undefined') {
-  (window as any).atprotoOAuthService = atprotoOAuthService;
-}
-
 export type { AtprotoSession };