From e9c6b105d18f142cf4d4b203e734513df1e5021c Mon Sep 17 00:00:00 2001
From: Sebastian <sebasjm@gmail.com>
Date: Thu, 18 Jan 2024 17:50:57 -0300
Subject: update config from merchant

---
 .../merchant-backoffice-ui/src/Application.tsx     |  8 ++---
 .../merchant-backoffice-ui/src/context/config.ts   |  9 ++---
 .../merchant-backoffice-ui/src/declaration.d.ts    | 40 +++++++++++++++++++++-
 3 files changed, 46 insertions(+), 11 deletions(-)

diff --git a/packages/merchant-backoffice-ui/src/Application.tsx b/packages/merchant-backoffice-ui/src/Application.tsx
index 0c509ef45..27ae26de5 100644
--- a/packages/merchant-backoffice-ui/src/Application.tsx
+++ b/packages/merchant-backoffice-ui/src/Application.tsx
@@ -61,10 +61,10 @@ function ApplicationStatusRoutes(): VNode {
   const result = useBackendConfig();
   const { i18n } = useTranslationContext();
 
-  const { currency, version } = result.ok && result.data
+  const configData = result.ok && result.data
     ? result.data
-    : { currency: "unknown", version: "unknown" };
-  const ctx = useMemo(() => ({ currency, version }), [currency, version]);
+    : undefined;
+  const ctx = useMemo(() => (configData), [configData]);
 
   if (!result.ok) {
     if (result.loading) return <Loading />;
@@ -159,7 +159,7 @@ function ApplicationStatusRoutes(): VNode {
 
   return (
     <div class="has-navbar-fixed-top">
-      <ConfigContextProvider value={ctx}>
+      <ConfigContextProvider value={ctx!}>
         <ApplicationReadyRoutes />
       </ConfigContextProvider>
     </div>
diff --git a/packages/merchant-backoffice-ui/src/context/config.ts b/packages/merchant-backoffice-ui/src/context/config.ts
index 040bd0341..9fe655301 100644
--- a/packages/merchant-backoffice-ui/src/context/config.ts
+++ b/packages/merchant-backoffice-ui/src/context/config.ts
@@ -21,12 +21,9 @@
 
 import { createContext } from "preact";
 import { useContext } from "preact/hooks";
+import { MerchantBackend } from "../declaration.js";
 
-interface Type {
-  currency: string;
-  version: string;
-}
-const Context = createContext<Type>(null!);
+const Context = createContext<MerchantBackend.VersionResponse>(null!);
 
 export const ConfigContextProvider = Context.Provider;
-export const useConfigContext = (): Type => useContext(Context);
+export const useConfigContext = (): MerchantBackend.VersionResponse => useContext(Context);
diff --git a/packages/merchant-backoffice-ui/src/declaration.d.ts b/packages/merchant-backoffice-ui/src/declaration.d.ts
index f99dd1867..38ab9d254 100644
--- a/packages/merchant-backoffice-ui/src/declaration.d.ts
+++ b/packages/merchant-backoffice-ui/src/declaration.d.ts
@@ -274,8 +274,46 @@ export namespace MerchantBackend {
     // Name of the protocol.
     name: "taler-merchant";
 
-    // Currency supported by this backend.
+    // Default (!) currency supported by this backend.
+    // This is the currency that the backend should
+    // suggest by default to the user when entering
+    // amounts. See currencies for a list of
+    // supported currencies and how to render them.
     currency: string;
+
+    // How services should render currencies supported
+    // by this backend.  Maps
+    // currency codes (e.g. "EUR" or "KUDOS") to
+    // the respective currency specification.
+    // All currencies in this map are supported by
+    // the backend.  Note that the actual currency
+    // specifications are a *hint* for applications
+    // that would like *advice* on how to render amounts.
+    // Applications *may* ignore the currency specification
+    // if they know how to render currencies that they are
+    // used with.
+    currencies: { currency: CurrencySpecification };
+
+    // Array of exchanges trusted by the merchant.
+    // Since protocol v6.
+    exchanges: ExchangeConfigInfo[];
+  }
+
+  interface ExchangeConfigInfo {
+
+    // Base URL of the exchange REST API.
+    base_url: string;
+
+    // Currency for which the merchant is configured
+    // to trust the exchange.
+    // May not be the one the exchange actually uses,
+    // but is the only one we would trust this exchange for.
+    currency: string;
+
+    // Offline master public key of the exchange. The
+    // /keys data must be signed with this public
+    // key for us to trust it.
+    master_pub: EddsaPublicKey;
   }
   interface Location {
     // Nation with its own government.
-- 
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