import { formatBerlinDate, formatBerlinTime } from "@/lib/calendar/timezone";

/** Day + short month, e.g. { day: "15", month: "SEP" } — for the date badge on event cards. */
export function formatEventDateParts(iso: string) {
  const date = new Date(iso);
  return {
    day: formatBerlinDate(date, { day: "2-digit" }),
    month: formatBerlinDate(date, { month: "short" }).toUpperCase().replace(".", ""),
  };
}

export function formatFullDate(iso: string) {
  return formatBerlinDate(new Date(iso), {
    weekday: "long",
    day: "2-digit",
    month: "long",
    year: "numeric",
  });
}

export function formatTime(iso: string) {
  return formatBerlinTime(new Date(iso), { hour: "2-digit", minute: "2-digit" });
}

export function formatTimeRange(start?: string | null, end?: string | null) {
  if (start && end) return `${formatTime(start)} – ${formatTime(end)} Uhr`;
  if (start) return `${formatTime(start)} Uhr`;
  return null;
}