import { format } from "date-and-time";

/**
 * Get UNIX time
 *
 * @returns Number of seconds since Epoch
 */
export function time(): number {
  return Math.floor(new Date().getTime() / 1000);
}

/**
 * Get UNIX time
 *
 * @returns Number of milliseconds since Epoch
 */
export function timeMs(): number {
  return new Date().getTime();
}

export function formatDateTime(time: number): string {
  const t = new Date();
  t.setTime(1000 * time);
  return format(t, "DD/MM/YYYY HH:mm:ss");
}

export function formatDate(time: number): string {
  const t = new Date();
  t.setTime(1000 * time);
  return format(t, "DD/MM/YYYY");
}

export function timeDiff(a: number, b: number): string {
  let diff = b - a;

  if (diff === 0) return "now";
  if (diff === 1) return "1 second";

  if (diff < 60) {
    return `${diff} seconds`;
  }

  diff = Math.floor(diff / 60);

  if (diff === 1) return "1 minute";
  if (diff < 60) {
    return `${diff} minutes`;
  }

  diff = Math.floor(diff / 60);

  if (diff === 1) return "1 hour";
  if (diff < 24) {
    return `${diff} hours`;
  }

  const diffDays = Math.floor(diff / 24);

  if (diffDays === 1) return "1 day";
  if (diffDays < 31) {
    return `${diffDays} days`;
  }

  diff = Math.floor(diffDays / 31);

  if (diff < 12) {
    return `${diff} month`;
  }

  const diffYears = Math.floor(diffDays / 365);

  if (diffYears === 1) return "1 year";
  return `${diffYears} years`;
}

export function timeDiffFromNow(t: number): string {
  return timeDiff(t, time());
}