first ugly version of authenticated backend requests.

needs some refactoring, but it works?

frontend/src/data/fetch.ts

@@ -0,0 +1,13 @@
+"use client";
+import { oidcConfig } from "muzak/config/auth";
+import { User } from "oidc-client-ts";
+
+export function getUser() {
+  let oidcStorage = window?.sessionStorage.getItem(
+    `oidc.user:${oidcConfig.authority}:${oidcConfig.client_id}`,
+  );
+  if (!oidcStorage) {
+    return null;
+  }
+  return User.fromStorageString(oidcStorage);
+}