/**
 * Shared formatting utilities
 */

/**
 * Format bytes to human-readable size (B, KB, MB)
 */
export function formatSize(bytes: number): string {
	if (bytes < 1024) return `${bytes} B`;
	if (bytes < 1024 * 1024) return `${(bytes / 1024).toFixed(1)} KB`;
	return `${(bytes / (1024 * 1024)).toFixed(1)} MB`;
}

/**
 * Format ISO date to relative time (e.g., "2 hours ago")
 */
export function formatRelativeTime(isoDate: string): string {
	const date = new Date(isoDate);
	const now = new Date();
	const diffMs = now.getTime() - date.getTime();

	const seconds = Math.floor(diffMs / 1000);
	const minutes = Math.floor(seconds / 60);
	const hours = Math.floor(minutes / 60);
	const days = Math.floor(hours / 24);

	if (days > 365) return `${Math.floor(days / 365)}y ago`;
	if (days > 30) return `${Math.floor(days / 30)}mo ago`;
	if (days > 0) return `${days}d ago`;
	if (hours > 0) return `${hours}h ago`;
	if (minutes > 0) return `${minutes}m ago`;
	return "just now";
}