type Msecs = number;

const zeroDangle = (symb: Msecs) => (symb.toString().length === 2 || symb > 9 ? symb : `0${symb}`);

export const getDateFromMsecs = (ms: Msecs) => {
  const min = Math.floor(ms / 1000 / 60);
  const sec = Math.floor((ms / 1000) % 60);

  return `${zeroDangle(min)}:${zeroDangle(sec)}`;
};

export const getHHMMSS = (ms: Msecs) =>
  new Date(ms)
    .toLocaleTimeString()
    .split(':')
    .map((t) => parseInt(t, 10))
    .map(zeroDangle)
    .join(':');

export const captureTime = () => {
  const startTime = Date.now();

  return () => Date.now() - startTime;
};