Refactor this code using SRP

srp.mjs

// Refactor this code using SRP (Single Responsibility Principle)
// To do this you need to decompose getRate into at least
// 2 functions: first will implement `retry` functionality,
// second will work with domain model (prepare call, get results)
// You may decompose to 3 functions or classes but please don't
// make over-engineering in Java style.
// Task from «Patterns for Async and Node.js»
// (Rethinking GRASP, SOLID, GoF for Frontend & Backend)
// 👉 https://t.me/asyncify

const API_EXCHANGE = {
  host: 'openexchangerates.org',
  path: 'api/latest.json?app_id=',
  key: '1f43ea96b1e343fe94333dd2b97a109d',
};

const DEFAULT_RETRY = 3;

const getRate = async (currency, retry = DEFAULT_RETRY) => {
  console.log({ currency, retry });
  const { host, path, key } = API_EXCHANGE;
  const url = `https://${host}/${path}${key}`;
  const res = await fetch(url).catch(() => ({ ok: false }));
  if (!res.ok) {
    const attemptsLeft = retry - 1;
    if (attemptsLeft > 0) return getRate(currency, retry - 1);
    throw new Error('Can not get data');
  }
  const data = await res.json();
  const rate = data.rates[currency];
  return rate;
};

try {
  const rate = await getRate('UAH');
  console.log({ rate });
} catch (err) {
  console.error({ err });
}

Task from «Patterns for Async and Node.js»
👉 Rethinking GRASP, SOLID, GoF for Frontend & Backend