arbret/frontend/app/utils/date.ts

/**
 * Shared date formatting utilities.
 */

/**
 * Format date as YYYY-MM-DD in local timezone.
 */
export function formatDate(d: Date): string {
  const year = d.getFullYear();
  const month = String(d.getMonth() + 1).padStart(2, "0");
  const day = String(d.getDate()).padStart(2, "0");
  return `${year}-${month}-${day}`;
}

/**
 * Format time from ISO string to HH:MM format.
 */
export function formatTime(isoString: string): string {
  const d = new Date(isoString);
  return d.toLocaleTimeString("en-US", { 
    hour: "2-digit", 
    minute: "2-digit",
    hour12: false,
  });
}

/**
 * Format datetime from ISO string to a readable format.
 */
export function formatDateTime(isoString: string): string {
  const d = new Date(isoString);
  return d.toLocaleString("en-US", {
    weekday: "short",
    month: "short",
    day: "numeric",
    hour: "2-digit",
    minute: "2-digit",
    hour12: false,
  });
}

/**
 * Format date for display (e.g., "Mon, Jan 15").
 */
export function formatDisplayDate(d: Date): string {
  return d.toLocaleDateString("en-US", { weekday: "short", month: "short", day: "numeric" });
}