1 files changed, 39 insertions, 25 deletions

diff --git a/packages/web-util/src/context/merchant-api.ts b/packages/web-util/src/context/merchant-api.ts
index 9e2869b62..26d9c9e85 100644
--- a/packages/web-util/src/context/merchant-api.ts
+++ b/packages/web-util/src/context/merchant-api.ts
@@ -23,7 +23,6 @@ import {
   TalerError,
   TalerMerchantApi,
   TalerMerchantInstanceCacheEviction,
-  TalerMerchantInstanceHttpClient,
   TalerMerchantManagementCacheEviction,
   TalerMerchantManagementHttpClient,
 } from "@gnu-taler/taler-util";
@@ -35,14 +34,13 @@ import {
   h,
 } from "preact";
 import { useContext, useEffect, useState } from "preact/hooks";
+import { BrowserFetchHttpLib } from "../index.browser.js";
 import {
   APIClient,
   ActiviyTracker,
   MerchantLib,
   Subscriber,
 } from "./activity.js";
-import { useTranslationContext } from "./translation.js";
-import { BrowserFetchHttpLib, ErrorLoading } from "../index.browser.js";
 
 /**
  *
@@ -56,6 +54,7 @@ export type MerchantContextType = {
   hints: VersionHint[];
   onActivity: Subscriber<ObservabilityEvent>;
   cancelRequest: (eventId: string) => void;
+  changeBackend: (url: URL) => void;
 };
 
 // FIXME: below
@@ -94,14 +93,17 @@ export const MerchantApiProvider = ({
   baseUrl: URL;
   evictors?: Evictors;
   children: ComponentChildren;
-  frameOnError: FunctionComponent<{ state: ConfigResultFail<TalerMerchantApi.VersionResponse> | undefined }>;
+  frameOnError: FunctionComponent<{
+    state: ConfigResultFail<TalerMerchantApi.VersionResponse> | undefined;
+  }>;
 }): VNode => {
   const [checked, setChecked] =
     useState<ConfigResult<TalerMerchantApi.VersionResponse>>();
-  const { i18n } = useTranslationContext();
+
+  const [merchantEndpoint, changeMerchantEndpoint] = useState(baseUrl);
 
   const { getRemoteConfig, VERSION, lib, cancelRequest, onActivity } =
-    buildMerchantApiClient(baseUrl, evictors);
+    buildMerchantApiClient(merchantEndpoint, evictors);
 
   useEffect(() => {
     getRemoteConfig()
@@ -128,11 +130,12 @@ export const MerchantApiProvider = ({
   }
 
   const value: MerchantContextType = {
-    url: baseUrl,
+    url: merchantEndpoint,
     config: checked.config,
     onActivity: onActivity,
     lib,
     cancelRequest,
+    changeBackend: changeMerchantEndpoint,
     hints: checked.hints,
   };
   return h(MerchantContext.Provider, {
@@ -157,40 +160,51 @@ function buildMerchantApiClient(
     },
   });
 
-  const management = new TalerMerchantManagementHttpClient(
+  const instance = new TalerMerchantManagementHttpClient(
     url.href,
     httpLib,
     evictors.management,
   );
-  const instance = (instanceId: string) =>
-    new TalerMerchantInstanceHttpClient(
-      management.getSubInstanceAPI(instanceId).href,
-      httpLib,
-      evictors.instance ? evictors.instance(instanceId) : undefined,
-    );
   const authenticate = new TalerAuthenticationHttpClient(
-    management.getAuthenticationAPI().href,
+    instance.getAuthenticationAPI().href,
     httpLib,
   );
-  const impersonate = (instanceId: string) =>
-    new TalerAuthenticationHttpClient(
-      instance(instanceId).getAuthenticationAPI().href,
-      httpLib,
-    );
+
+  // const instance = (instanceId: string): TalerMerchantInstanceHttpClient => {
+  //   return new TalerMerchantInstanceHttpClient(
+  //     management.getSubInstanceAPI(instanceId).href,
+  //     httpLib,
+  //     evictors.instance ? evictors.instance(instanceId) : undefined,
+  //   );
+  // }
+  // const impersonate = (instanceId: string): TalerAuthenticationHttpClient => {
+  //   return new TalerAuthenticationHttpClient(
+  //     instance(instanceId).getAuthenticationAPI().href,
+  //     httpLib,
+  //   );
+  // }
+  const rootUrl = url;
+  function getSubInstanceAPI(instanceId: string): MerchantLib {
+    const newURL = new URL(`instance/${instanceId}/`, rootUrl);
+    const api = buildMerchantApiClient(newURL, evictors);
+    return api.lib;
+  }
 
   async function getRemoteConfig(): Promise<TalerMerchantApi.VersionResponse> {
-    const resp = await management.getConfig();
+    const resp = await instance.getConfig();
+    if (resp.type === "fail") {
+      throw TalerError.fromUncheckedDetail(resp.detail)
+    }
     return resp.body;
   }
 
   return {
     getRemoteConfig,
-    VERSION: management.PROTOCOL_VERSION,
+    VERSION: instance.PROTOCOL_VERSION,
     lib: {
-      management,
-      authenticate,
-      impersonate,
       instance,
+      authenticate,
+      subInstanceApi: getSubInstanceAPI,
     },
     onActivity: tracker.subscribe,
     cancelRequest: httpLib.cancelRequest,