1 files changed, 18 insertions, 0 deletions
diff --git a/packages/taler-util/src/wallet-types.ts b/packages/taler-util/src/wallet-types.ts
index 2c92d9295..42c0148e7 100644
--- a/packages/taler-util/src/wallet-types.ts
+++ b/packages/taler-util/src/wallet-types.ts
@@ -558,11 +558,13 @@ export enum ScopeType {
 }
 
 export type ScopeInfoGlobal = { type: ScopeType.Global; currency: string };
+
 export type ScopeInfoExchange = {
   type: ScopeType.Exchange;
   currency: string;
   url: string;
 };
+
 export type ScopeInfoAuditor = {
   type: ScopeType.Auditor;
   currency: string;
@@ -571,6 +573,22 @@ export type ScopeInfoAuditor = {
 
 export type ScopeInfo = ScopeInfoGlobal | ScopeInfoExchange | ScopeInfoAuditor;
 
+/**
+ * Encode scope info as a string.
+ *
+ * Format must be stable as it's used in the database.
+ */
+export function stringifyScopeInfo(si: ScopeInfo): string {
+  switch (si.type) {
+    case ScopeType.Global:
+      return `taler-si:global/${si.currency}}`;
+    case ScopeType.Auditor:
+      return `taler-si:auditor/${si.currency}/${encodeURIComponent(si.url)}`;
+    case ScopeType.Exchange:
+      return `taler-si:exchange/${si.currency}/${encodeURIComponent(si.url)}`;
+  }
+}
+
 export interface BalancesResponse {
   balances: WalletBalance[];
 }