From d63a773bf5f3b74040e094a94afb732be7218106 Mon Sep 17 00:00:00 2001
From: Florian Dold <florian@dold.me>
Date: Tue, 1 Nov 2022 15:31:48 +0100
Subject: wallet-core: report supportedAgeGroups

---
 packages/taler-util/src/taler-crypto.ts | 17 +++++++++++++++++
 packages/taler-util/src/wallet-types.ts |  2 ++
 2 files changed, 19 insertions(+)

(limited to 'packages/taler-util')

diff --git a/packages/taler-util/src/taler-crypto.ts b/packages/taler-util/src/taler-crypto.ts
index d7e9a0c06..b4b96afbc 100644
--- a/packages/taler-util/src/taler-crypto.ts
+++ b/packages/taler-util/src/taler-crypto.ts
@@ -1025,6 +1025,23 @@ export namespace AgeRestriction {
     return count;
   }
 
+  /**
+   * Get the starting points for age groups in the mask.
+   */
+  export function getAgeGroupsFromMask(mask: number): number[] {
+    const groups: number[] = [];
+    let age = 1;
+    let m = mask >> 1;
+    while (m > 0) {
+      if (m & 1) {
+        groups.push(age);
+      }
+      m = m >> 1;
+      age++;
+    }
+    return groups;
+  }
+
   export function getAgeGroupIndex(mask: number, age: number): number {
     invariant((mask & 1) === 1);
     let i = 0;
diff --git a/packages/taler-util/src/wallet-types.ts b/packages/taler-util/src/wallet-types.ts
index f6bc13d65..3eafe7522 100644
--- a/packages/taler-util/src/wallet-types.ts
+++ b/packages/taler-util/src/wallet-types.ts
@@ -919,6 +919,7 @@ export interface ExchangeListItem {
   paytoUris: string[];
   tosStatus: ExchangeTosStatus;
   exchangeStatus: ExchangeEntryStatus;
+  supportedAgeGroups: number[];
   /**
    * Permanently added to the wallet, as opposed to just
    * temporarily queried.
@@ -998,6 +999,7 @@ export const codecForExchangeListItem = (): Codec<ExchangeListItem> =>
     .property("tosStatus", codecForAny())
     .property("exchangeStatus", codecForAny())
     .property("permanent", codecForBoolean())
+    .property("supportedAgeGroups", codecForList(codecForNumber()))
     .build("ExchangeListItem");
 
 export const codecForExchangesListResponse = (): Codec<ExchangesListResponse> =>
-- 
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