import { clsx, type ClassValue } from "clsx"
import { twMerge } from "tailwind-merge"

export function cn(...inputs: ClassValue[]) {
  return twMerge(clsx(inputs))
}

export function relativeTime(date: Date): string {
  const diff = Date.now() - date.getTime()
  const minutes = Math.floor(diff / 60_000)
  if (minutes < 1) return 'net nu'
  if (minutes < 60) return `${minutes}m geleden`
  const hours = Math.floor(minutes / 60)
  if (hours < 24) return `${hours}u geleden`
  return `${Math.floor(hours / 24)}d geleden`
}

/** Human-readable duration from a millisecond count. */
export function formatDuration(ms: number): string {
  if (ms < 1000) return `${ms}ms`
  const totalSec = Math.round(ms / 1000)
  if (totalSec < 60) return `${totalSec}s`
  const minutes = Math.floor(totalSec / 60)
  const seconds = totalSec % 60
  if (minutes < 60) return `${minutes}m ${seconds}s`
  const hours = Math.floor(minutes / 60)
  return `${hours}u ${minutes % 60}m`
}