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

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

export function formatNumber(n: number): string {
  if (n >= 1_000_000_000) return `${(n / 1_000_000_000).toFixed(2)}B`
  if (n >= 1_000_000) return `${(n / 1_000_000).toFixed(2)}M`
  if (n >= 1_000) return `${(n / 1_000).toFixed(1)}K`
  return n.toFixed(0)
}

export function formatCurrency(n: number): string {
  return new Intl.NumberFormat('en-US', { style: 'currency', currency: 'USD', maximumFractionDigits: 0 }).format(n)
}

export function shortenAddress(addr: string): string {
  if (addr.length < 10) return addr
  return `${addr.slice(0, 4)}...${addr.slice(-4)}`
}

export function getTimeAgo(date: Date): string {
  const s = Math.floor((Date.now() - date.getTime()) / 1000)
  if (s < 60) return `${s}s ago`
  if (s < 3600) return `${Math.floor(s / 60)}m ago`
  if (s < 86400) return `${Math.floor(s / 3600)}h ago`
  return `${Math.floor(s / 86400)}d ago`
}