const responses = ["wink", "double blink", "close your eyes", "jump"] as const;

export function commands(secret: Secret): Response[] {
  if (secret < 1 || secret > 31) {
    return [];
  }

  const result = secret
    .toString(2)
    .split("")
    .reverse()
    .map((s, i) => (s === "1" ? responses[i] : null))
    .filter(Boolean);

  if (secret >= 16) {
    return result.reverse() as Response[];
  }
  return result as Response[];
}

type Secret =
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  | 31;

type Response = typeof responses[number];