1 files changed, 17 insertions, 4 deletions
diff --git a/packages/demobank-ui/src/context/config.ts b/packages/demobank-ui/src/context/config.ts
index 9908c73a2..2d70cf932 100644
--- a/packages/demobank-ui/src/context/config.ts
+++ b/packages/demobank-ui/src/context/config.ts
@@ -14,7 +14,7 @@
  GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
  */
 
-import { TalerCorebankApi, TalerCoreBankHttpClient, TalerError } from "@gnu-taler/taler-util";
+import { LibtoolVersion, TalerCorebankApi, TalerCoreBankHttpClient, TalerError } from "@gnu-taler/taler-util";
 import { BrowserHttpLib, ErrorLoading, useTranslationContext } from "@gnu-taler/web-util/browser";
 import { ComponentChildren, createContext, FunctionComponent, h, VNode } from "preact";
 import { useContext, useEffect, useState } from "preact/hooks";
@@ -34,8 +34,15 @@ const Context = createContext<Type>(undefined as any);
 
 export const useBankCoreApiContext = (): Type => useContext(Context);
 
+enum VersionHint {
+  /**
+   * when this flag is on, server is running an old version with cashout before implementing 2fa API
+   */
+  CASHOUT_BEFORE_2FA,
+}
+
 export type ConfigResult = undefined
-  | { type: "ok", config: TalerCorebankApi.Config }
+  | { type: "ok", config: TalerCorebankApi.Config, hint: VersionHint[] }
   | { type: "incompatible", result: TalerCorebankApi.Config, supported: string }
   | { type: "error", error: TalerError }
 
@@ -56,9 +63,15 @@ export const BankCoreApiProvider = ({
     api.getConfig()
       .then((resp) => {
         if (api.isCompatible(resp.body.version)) {
-          setChecked({ type: "ok", config: resp.body });
+          setChecked({ type: "ok", config: resp.body, hint: [] });
         } else {
-          setChecked({ type: "incompatible", result: resp.body, supported: api.PROTOCOL_VERSION })
+          //this API supports version 3.0.3
+          const compare = LibtoolVersion.compare("3:0:3", resp.body.version)
+          if (compare?.compatible ?? false) {
+            setChecked({ type: "ok", config: resp.body, hint: [VersionHint.CASHOUT_BEFORE_2FA] });
+          } else {
+            setChecked({ type: "incompatible", result: resp.body, supported: api.PROTOCOL_VERSION })
+          }
         }
       })
       .catch((error: unknown) => {