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

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

/**
 * Formata uma data para string relativa (ex: "há 2 horas")
 */
export function formatTimeAgo(date: Date | string): string {
  const dateObj = typeof date === "string" ? new Date(date) : date;
  const seconds = Math.floor((Date.now() - dateObj.getTime()) / 1000);
  if (seconds < 60) return "há alguns segundos";
  const minutes = Math.floor(seconds / 60);
  if (minutes < 60)
    return `há ${minutes} ${minutes === 1 ? "minuto" : "minutos"}`;
  const hours = Math.floor(minutes / 60);
  if (hours < 24) return `há ${hours} ${hours === 1 ? "hora" : "horas"}`;
  const days = Math.floor(hours / 24);
  if (days < 30) return `há ${days} ${days === 1 ? "dia" : "dias"}`;
  const months = Math.floor(days / 30);
  if (months < 12) return `há ${months} ${months === 1 ? "mês" : "meses"}`;
  const years = Math.floor(months / 12);
  return `há ${years} ${years === 1 ? "ano" : "anos"}`;
}