make signed request to exchange

1 files changed, 81 insertions, 0 deletions

diff --git a/packages/aml-backoffice-ui/src/hooks/useBackend.ts b/packages/aml-backoffice-ui/src/hooks/useBackend.ts
new file mode 100644
index 000000000..e68efb2e3
--- /dev/null
+++ b/packages/aml-backoffice-ui/src/hooks/useBackend.ts
@@ -0,0 +1,81 @@
+import {
+  HttpResponseOk,
+  RequestOptions,
+  useApiContext,
+} from "@gnu-taler/web-util/browser";
+import { useCallback } from "preact/hooks";
+import { uiSettings } from "../settings.js";
+import { canonicalizeBaseUrl } from "@gnu-taler/taler-util";
+import { useOfficer } from "./useOfficer.js";
+import { buildQuerySignature } from "../account.js";
+
+interface useBackendType {
+  request: <T>(
+    path: string,
+    options?: RequestOptions,
+  ) => Promise<HttpResponseOk<T>>;
+  fetcher: <T>(endpoint: string) => Promise<HttpResponseOk<T>>;
+  paginatedFetcher: <T>(
+    args: [string, number, number, string],
+  ) => Promise<HttpResponseOk<T>>;
+}
+export function usePublicBackend(): useBackendType {
+  const { request: requestHandler } = useApiContext();
+
+  const baseUrl = getInitialBackendBaseURL();
+
+  const request = useCallback(
+    function requestImpl<T>(
+      path: string,
+      options: RequestOptions = {},
+    ): Promise<HttpResponseOk<T>> {
+      return requestHandler<T>(baseUrl, path, options);
+    },
+    [baseUrl],
+  );
+
+  const fetcher = useCallback(
+    function fetcherImpl<T>(endpoint: string): Promise<HttpResponseOk<T>> {
+      return requestHandler<T>(baseUrl, endpoint);
+    },
+    [baseUrl],
+  );
+  const paginatedFetcher = useCallback(
+    function fetcherImpl<T>([endpoint, page, size, talerAmlOfficerSignature]: [
+      string,
+      number,
+      number,
+      string,
+    ]): Promise<HttpResponseOk<T>> {
+      return requestHandler<T>(baseUrl, endpoint, {
+        params: { page: page || 1, size },
+        talerAmlOfficerSignature,
+      });
+    },
+    [baseUrl],
+  );
+  return {
+    request,
+    fetcher,
+    paginatedFetcher,
+  };
+}
+
+export function getInitialBackendBaseURL(): string {
+  const overrideUrl =
+    typeof localStorage !== "undefined"
+      ? localStorage.getItem("exchange-aml-base-url")
+      : undefined;
+  if (!overrideUrl) {
+    //normal path
+    if (!uiSettings.backendBaseURL) {
+      console.error(
+        "ERROR: backendBaseURL was overridden by a setting file and missing. Setting value to 'window.origin'",
+      );
+      return canonicalizeBaseUrl(window.origin);
+    }
+    return canonicalizeBaseUrl(uiSettings.backendBaseURL);
+  }
+  // testing/development path
+  return canonicalizeBaseUrl(overrideUrl);
+}