export function getRelativeTimeString(dateString: string): string {
  const date = new Date(dateString);
  date.setHours(0, 0, 0, 0);

  const today = new Date();
  today.setHours(0, 0, 0, 0);

  const diff = date.getTime() - today.getTime();
  const unitDiff = Math.round(diff / (1000 * 60 * 60 * 24));

  // Check if the date is more than one week old
  if (Math.abs(unitDiff) > 7) {
    return new Intl.DateTimeFormat(undefined, {
      day: "numeric",
      month: "long",
    }).format(date);
  }

  // Intl.RelativeTimeFormat for dates within the last week
  const rtf = new Intl.RelativeTimeFormat(undefined, { numeric: "auto" });
  return ucFirst(rtf.format(unitDiff, "day"));
}

function ucFirst(str: string): string {
  return str.charAt(0).toUpperCase() + str.slice(1);
}