export const inr = (n: number) =>
  new Intl.NumberFormat("en-IN", {
    style: "currency",
    currency: "INR",
    maximumFractionDigits: 0,
  }).format(n ?? 0);

export const fmtDate = (iso?: string | null) => {
  if (!iso) return "—";
  const d = new Date(iso);
  if (Number.isNaN(d.getTime())) return iso;
  return d.toLocaleDateString("en-IN", {
    day: "numeric",
    month: "short",
    year: "numeric",
  });
};

export const fmtTime = (hhmmss?: string | null) => {
  if (!hhmmss) return "—";
  const [h, m] = hhmmss.split(":");
  const d = new Date();
  d.setHours(Number(h), Number(m));
  return d.toLocaleTimeString("en-IN", { hour: "numeric", minute: "2-digit" });
};

export const initials = (name?: string | null) => {
  if (!name) return "?";
  const parts = name.trim().split(/\s+/);
  if (parts.length === 1) return parts[0][0]?.toUpperCase() ?? "?";
  return (parts[0][0] + parts[parts.length - 1][0]).toUpperCase();
};