fix auth

app/routes/auth.py

@@ -19,10 +19,27 @@ def login_oauth(provider):
 @bp.route("/callback/<provider>")
 def callback(provider):
     """Handle OAuth callback from specified provider."""
+    from flask import redirect, make_response
+    
     try:
-        return auth_service.handle_callback(provider)
+        auth_response = auth_service.handle_callback(provider)
+        
+        # If successful, redirect to frontend dashboard with cookies
+        if auth_response.status_code == 200:
+            redirect_response = make_response(redirect("http://localhost:3000/dashboard"))
+            
+            # Copy all cookies from the auth response
+            for cookie in auth_response.headers.getlist('Set-Cookie'):
+                redirect_response.headers.add('Set-Cookie', cookie)
+            
+            return redirect_response
+        else:
+            # If there was an error, redirect to login with error
+            return redirect("http://localhost:3000/login?error=oauth_failed")
+            
     except Exception as e:
-        return {"error": str(e)}, 400
+        error_msg = str(e).replace(' ', '_').replace('"', '')
+        return redirect(f"http://localhost:3000/login?error={error_msg}")
 
 
 @bp.route("/providers")