import { formatDistanceToNow, parseISO } from "date-fns";

/**
 * Formats a timestamp to a human readable format
 * eg: 1 minute ago, 2 hours ago, 3 days ago
 *
 * @param timestamp the timestamp to format
 * @returns the formatted timestamp
 */
export function formatTimeAgo(timestamp: string) {
  const date = parseISO(timestamp);
  const now = new Date();
  if (date > now) {
    return "just now";
  }

  const timeDifference = formatDistanceToNow(date);
  if (timeDifference === "less than a minute") {
    return "just now";
  } else {
    return `${timeDifference
      .replace("about", "")
      .replace("almost", "")
      .replace("over", "")} ago`;
  }
}

/**
 * Formats a timestamp to a human readable format
 *
 * @param timestamp the timestamp to format
 * @returns the formatted timestamp
 */
export function formatDate(timestamp: string) {
  const date = parseISO(timestamp);
  return date.toLocaleDateString("en-US", {
    year: "numeric",
    month: "long",
    day: "numeric",
    hour: "numeric",
    minute: "numeric",
  });
}

/**
 * Formats a time in milliseconds to a human readable format
 *
 * @param ms the time in milliseconds
 * @returns the formatted time
 */
export function formatMsToTime(ms: number) {
  const seconds = Math.floor((ms / 1000) % 60);
  const minutes = Math.floor((ms / (1000 * 60)) % 60);
  const hours = Math.floor((ms / (1000 * 60 * 60)) % 24);

  const hoursStr = hours > 0 ? hours.toString() + ":" : "";
  const minutesStr = minutes.toString().padStart(2, "0") + ":";
  const secondsStr = seconds.toString().padStart(2, "0");

  return hoursStr + minutesStr + secondsStr;
}