function addZero(i) {
  if (i < 10) {
    i = "0" + i;
  }
  return i;
}


function showTimeDuration(start) {
  let end;
  end = new Date();
  start = new Date(start);
  let customizedDate;

  const totalSeconds = Math.floor((end - start) / 1000);
  const totalMinutes = Math.floor(totalSeconds / 60);
  const totalHours = Math.floor(totalMinutes / 60);
  const totalDays = Math.floor(totalHours / 24);

  const hours = totalHours - totalDays * 24;
  const minutes = totalMinutes - totalDays * 24 * 60 - hours * 60;
  const seconds =
    totalSeconds - totalDays * 24 * 60 * 60 - hours * 60 * 60 - minutes * 60;

  let time = start.getHours() + ":" + addZero(start.getUTCMinutes());

  return time;
}

module.exports = {
  showTimeDuration: showTimeDuration,
};