// Copyright (c) 2023 Tudor Stanciu

import { useContext, useState, useEffect } from "react";
import { TuitioContext } from "../contexts";
import { camelizeKeys } from "@flare/js-utils";
import type { TuitioTokenData } from "@flare/tuitio-client";

const useTuitioDecodedToken = () => {
  const state = useContext(TuitioContext);
  const [decodedToken, setDecodedToken] = useState<TuitioTokenData>();

  useEffect(() => {
    if (decodedToken || !state.auth.token) return;
    const decodedTokenBuffer = Buffer.from(state.auth.token, "base64");
    const decodedTokenString = decodedTokenBuffer.toString("utf-8");
    const decoded = camelizeKeys(JSON.parse(decodedTokenString));
    setDecodedToken(decoded);
  }, [decodedToken, state.auth.token]);

  return { decodedToken };
};

export { useTuitioDecodedToken };