// Format file size for display
export function formatFileSize(bytes: number): string {
  if (bytes === 0) return '0 Bytes';

  const k = 1024;
  const sizes = ['Bytes', 'KB', 'MB', 'GB'];
  const i = Math.floor(Math.log(bytes) / Math.log(k));

  return `${parseFloat((bytes / Math.pow(k, i)).toFixed(2))} ${sizes[i]}`;
}

// Format currency for display
export function formatCurrency(amount: number, currency = 'USD'): string {
  return new Intl.NumberFormat('en-US', {
    style: 'currency',
    currency,
  }).format(amount);
}

// Truncate text with ellipsis
export function truncateText(text: string, maxLength: number): string {
  if (text.length <= maxLength) return text;
  return `${text.slice(0, maxLength).trim()}...`;
}

// Format date for display
export function formatDate(date: string | Date): string {
  const dateObj = typeof date === 'string' ? new Date(date) : date;
  return new Intl.DateTimeFormat('en-US', {
    year: 'numeric',
    month: 'short',
    day: 'numeric',
  }).format(dateObj);
}

// Format relative time (e.g., "2 hours ago")
export function formatRelativeTime(date: string | Date): string {
  const dateObj = typeof date === 'string' ? new Date(date) : date;
  const now = new Date();
  const diffInSeconds = Math.floor((now.getTime() - dateObj.getTime()) / 1000);

  if (diffInSeconds < 60) return 'just now';
  if (diffInSeconds < 3600)
    return `${Math.floor(diffInSeconds / 60)} minutes ago`;
  if (diffInSeconds < 86400)
    return `${Math.floor(diffInSeconds / 3600)} hours ago`;
  if (diffInSeconds < 2592000)
    return `${Math.floor(diffInSeconds / 86400)} days ago`;

  return formatDate(dateObj);
}