/**
 * Formatting utilities
 */

/**
 * Format a date as a relative time string.
 * @param dateString - ISO date string
 * @param compact - If true, use compact format ("2d" vs "2 days ago")
 */
export function formatTimeAgo(dateString: string, compact = false): string {
	const date = new Date(dateString);
	const now = new Date();
	const diffMs = now.getTime() - date.getTime();
	const diffMins = Math.floor(diffMs / 60000);
	const diffHours = Math.floor(diffMs / 3600000);
	const diffDays = Math.floor(diffMs / 86400000);

	if (compact) {
		if (diffMins < 1) return 'now';
		if (diffMins < 60) return `${diffMins}m`;
		if (diffHours < 24) return `${diffHours}h`;
		if (diffDays < 7) return `${diffDays}d`;
		if (diffDays < 365)
			return date.toLocaleDateString(undefined, { month: 'short', day: 'numeric' });
		return date.toLocaleDateString(undefined, { month: 'short', day: 'numeric', year: 'numeric' });
	}

	if (diffMins < 1) return 'just now';
	if (diffMins < 60) return `${diffMins} minute${diffMins === 1 ? '' : 's'} ago`;
	if (diffHours < 24) return `${diffHours} hour${diffHours === 1 ? '' : 's'} ago`;
	if (diffDays === 1) return 'yesterday';
	if (diffDays < 30) return `${diffDays} day${diffDays === 1 ? '' : 's'} ago`;
	return date.toLocaleDateString();
}

/**
 * Extract the domain from a URL, removing "www." prefix
 */
export function getDomain(url: string): string {
	try {
		return new URL(url).hostname.replace(/^www\./, '');
	} catch {
		return url;
	}
}