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

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

/** Format an ISO timestamp as a short, locale-stable date-time for tables. */
export function fmtDate(iso: string | null | undefined): string {
  if (!iso) return "—";
  const d = new Date(iso);
  if (isNaN(d.getTime())) return "—";
  return d.toLocaleString(undefined, {
    year: "numeric",
    month: "short",
    day: "numeric",
    hour: "2-digit",
    minute: "2-digit",
  });
}