merge fetch and fetcher

frontend/src/data/fetcher.ts

@@ -1,7 +1,18 @@
 "use client";
 import { Fetcher } from "openapi-typescript-fetch";
-import { getUser } from "./fetch";
 import { paths, components } from "muzak/data/types";
+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);
+}
 
 const fetcher = Fetcher.for<paths>();
 const BASE_URL = process.env.NEXT_PUBLIC_BACKEND_HOST!;