search user

apps/login/src/app/(login)/idp/[provider]/success/page.tsx

@@ -4,6 +4,7 @@ import {
   createUser,
   getBrandingSettings,
   getIDPByID,
+  listUsers,
   retrieveIDPIntent,
 } from "@/lib/zitadel";
 import Alert, { AlertType } from "@/ui/Alert";
@@ -152,6 +153,13 @@ export default async function Page({
           if (options?.isLinkingAllowed) {
             const userId = "";
 
+            const foundUser = await listUsers(idpInformation.userName).then(
+              (response) => {
+                return response.result ? response.result[0] : null;
+              },
+            );
+
+            if (foundUser) {
               const idpLink = await addIDPLink(
                 {
                   id: idpInformation.idpId,
@@ -186,6 +194,7 @@ export default async function Page({
                   </DynamicTheme>
                 );
               }
+            }
           } else if (options?.isCreationAllowed && options.isAutoCreation) {
             const userId = await createUser(provider, idpInformation).catch(
               (error) => {

apps/login/src/lib/zitadel.ts

@@ -237,7 +237,7 @@ export async function getUserByID(userId: string) {
   return userService.getUserByID({ userId }, {});
 }
 
-export async function listUsers(userName: string, organizationId: string) {
+export async function listUsers(userName: string, organizationId?: string) {
   return userService.listUsers(
     {
       queries: organizationId