export function timestampToDurationString(ms: number | undefined) {
  if (!ms || ms <= 0) {
    return '-';
  }
  const duration = ms / 1000;
  const hours = Math.floor(duration / 3600);
  const minutes = Math.floor((duration - (hours * 3600)) / 60);
  const seconds = Math.trunc(duration - (hours * 3600) - (minutes * 60));
  const out = [];
  if (hours > 0) {
    out.push(`${hours}h`);
  }
  if (minutes > 0) {
    out.push(`${minutes}m`);
  }
  if (seconds > 0) {
    out.push(`${seconds}s`);
  }
  return out.join(' ');
}