export function formatDuration(durationMs?: number | null) {
  if (!durationMs) return "--:--";
  const totalSeconds = Math.floor(durationMs / 1000);
  const minutes = Math.floor(totalSeconds / 60);
  const seconds = totalSeconds % 60;
  return `${minutes}:${seconds.toString().padStart(2, "0")}`;
}

export function formatFileSize(sizeBytes?: number | null) {
  if (!sizeBytes) return "0 B";
  const units = ["B", "KB", "MB", "GB"];
  let size = sizeBytes;
  let index = 0;
  while (size >= 1024 && index < units.length - 1) {
    size /= 1024;
    index += 1;
  }
  return `${size.toFixed(index === 0 ? 0 : 1)} ${units[index]}`;
}

export function formatCountdown(durationMs: number) {
  const totalSeconds = Math.max(0, Math.floor(durationMs / 1000));
  const hours = Math.floor(totalSeconds / 3600);
  const minutes = Math.floor((totalSeconds % 3600) / 60);
  const seconds = totalSeconds % 60;
  return [hours, minutes, seconds].map((value) => value.toString().padStart(2, "0")).join(":");
}