import { type ClassValue, clsx } from "clsx";
import { twMerge } from "tailwind-merge";

export function cn(...inputs: ClassValue[]) {
  return twMerge(clsx(inputs));
}

export function formatDate(timestamp: number): string {
  const date = new Date(timestamp);
  return new Intl.DateTimeFormat("en-US", {
    year: "numeric",
    month: "short",
    day: "numeric",
  }).format(date);
}

export function formatRelativeTime(timestamp: number): string {
  const now = Date.now();
  const diff = now - timestamp;

  const minute = 60 * 1000;
  const hour = 60 * minute;
  const day = 24 * hour;
  const week = 7 * day;
  const month = 30 * day;
  const year = 365 * day;

  if (diff < minute) return "just now";
  if (diff < hour) return `${Math.floor(diff / minute)}m ago`;
  if (diff < day) return `${Math.floor(diff / hour)}h ago`;
  if (diff < week) return `${Math.floor(diff / day)}d ago`;
  if (diff < month) return `${Math.floor(diff / week)}w ago`;
  if (diff < year) return `${Math.floor(diff / month)}mo ago`;
  return `${Math.floor(diff / year)}y ago`;
}