/**
 * Shared formatting utilities.
 */

export function formatSize(bytes: number | null | undefined): string {
  if (!bytes) return "—";
  if (bytes < 1024 * 1024) return `${(bytes / 1024).toFixed(0)} KB`;
  if (bytes < 1024 * 1024 * 1024)
    return `${(bytes / (1024 * 1024)).toFixed(1)} MB`;
  return `${(bytes / (1024 * 1024 * 1024)).toFixed(2)} GB`;
}

export function formatDuration(seconds: number | null | undefined): string {
  if (!seconds) return "—";
  const h = Math.floor(seconds / 3600);
  const m = Math.floor((seconds % 3600) / 60);
  const s = Math.floor(seconds % 60);
  if (h > 0)
    return `${h}:${m.toString().padStart(2, "0")}:${s.toString().padStart(2, "0")}`;
  return `${m}:${s.toString().padStart(2, "0")}`;
}