Add appName, so we can use the right cookie, proxy signUp and MFA finalize

Author: jamesdaniels

packages/auth/src/api/index.ts

@@ -76,11 +76,13 @@ export const enum Endpoint {
 }
 
 const CookieAuthProxiedEndpoints: string[] = [
+  Endpoint.FINALIZE_MFA_SIGN_IN,
   Endpoint.SIGN_IN_WITH_CUSTOM_TOKEN,
   Endpoint.SIGN_IN_WITH_EMAIL_LINK,
   Endpoint.SIGN_IN_WITH_IDP,
   Endpoint.SIGN_IN_WITH_PASSWORD,
   Endpoint.SIGN_IN_WITH_PHONE_NUMBER,
+  Endpoint.SIGN_UP,
   Endpoint.TOKEN
 ];
 
@@ -291,7 +293,7 @@ export async function _getFinalTarget(
     if (authInternal._getPersistenceType() === PersistenceType.COOKIE) {
       const cookiePersistence =
         authInternal._getPersistence() as CookiePersistence;
-      return cookiePersistence._getFinalTarget(finalTarget).toString();
+      return cookiePersistence._getFinalTarget(auth, finalTarget).toString();
     }
   }
 

packages/auth/src/platform_browser/persistence/cookie_storage.ts

@@ -15,7 +15,7 @@
  * limitations under the License.
  */
 
-import { Persistence } from '../../model/public_types';
+import { Auth, Persistence } from '../../model/public_types';
 import type { CookieChangeEvent } from 'cookie-store';
 
 const POLLING_INTERVAL_MS = 1_000;
@@ -49,12 +49,13 @@ export class CookiePersistence implements PersistenceInternal {
   listenerUnsubscribes: Map<StorageEventListener, () => void> = new Map();
 
   // used to get the URL to the backend to proxy to
-  _getFinalTarget(originalUrl: string): URL | string {
+  _getFinalTarget(auth: Auth, originalUrl: string): URL | string {
     if (typeof window === undefined) {
       return originalUrl;
     }
     const url = new URL(`${window.location.origin}/__cookies__`);
     url.searchParams.set('finalTarget', originalUrl);
+    url.searchParams.set('appName', auth.app.name);
     return url;
   }