tsms/src/app/utils/fetchUtil.ts

import { SessionWithTokens, authOptions } from "@/config/authConfig";
import { getServerSession } from "next-auth";
import { headers } from "next/headers";
import { redirect } from "next/navigation";

export const serverFetch: typeof fetch = async (input, init) => {
  // eslint-disable-next-line @typescript-eslint/no-explicit-any
  const session = await getServerSession<any, SessionWithTokens>(authOptions);
  const accessToken = session?.accessToken;

  return fetch(input, {
    ...init,
    headers: {
      ...init?.headers,
      ...(accessToken
        ? {
            Authorization: `Bearer ${accessToken}`,
          }
        : {}),
    },
  });
};

type FetchParams = Parameters<typeof fetch>;

export async function serverFetchJson<T>(...args: FetchParams) {
  const response = await serverFetch(...args);
  if (response.ok) {
    return response.json() as T;
  } else {
    switch (response.status) {
      case 401:
        signOutUser();
      default:
        throw Error("Something went wrong fetching data in server.");
    }
  }
}

export const signOutUser = () => {
  const headersList = headers();
  const referer = headersList.get("referer");
  redirect(
    `/logout${referer ? `?callbackUrl=${encodeURIComponent(referer)}` : ""}`,
  );
};