const units = ["B", "KB", "MB", "GB", "TB"];

export const statusLabels = {
  queued: "Queued",
  downloading: "Downloading",
  paused: "Paused",
  extracting: "Extracting",
  ready: "Ready",
  moving: "Moving",
  completed: "Completed",
  failed: "Failed",
  cancelled: "Cancelled",
};

export function formatBytes(bytes) {
  let value = Math.max(0, bytes || 0);
  let unitIndex = 0;
  while (value >= 1024 && unitIndex < units.length - 1) {
    value /= 1024;
    unitIndex += 1;
  }
  return `${value.toFixed(unitIndex === 0 ? 0 : 1)} ${units[unitIndex]}`;
}

export function formatDuration(seconds) {
  const total = Math.max(0, Math.round(seconds));
  const hours = Math.floor(total / 3600);
  const minutes = Math.floor((total % 3600) / 60);
  const remainingSeconds = total % 60;
  if (hours > 0) return `${hours}h ${minutes}m`;
  if (minutes > 0) return `${minutes}m ${remainingSeconds}s`;
  return `${remainingSeconds}s`;
}

export function formatDate(value) {
  const date = new Date(value);
  return Number.isNaN(date.getTime()) ? "" : date.toLocaleString();
}

export function percentOf(done, total) {
  if (!total || total <= 0) return null;
  return Math.min(100, (done / total) * 100);
}