export function formatPrice(n: number): string {
  return '$' + n.toLocaleString('en-US', { minimumFractionDigits: 2, maximumFractionDigits: 2 })
}

export function formatPct(n: number): string {
  const sign = n >= 0 ? '+' : ''
  return `${sign}${n.toFixed(2)}%`
}

export function formatHold(seconds: number): string {
  if (seconds < 60) return `${seconds}s`
  const h = Math.floor(seconds / 3600)
  const m = Math.floor((seconds % 3600) / 60)
  if (h === 0) return `${m}m`
  if (m === 0) return `${h}h`
  return `${h}h ${m}m`
}

export function shortenAddress(addr: string): string {
  if (addr.length < 10) return addr
  return `${addr.slice(0, 6)}...${addr.slice(-4)}`
}

export function sentimentColor(s: string): string {
  switch (s) {
    case 'bullish':
      return '#4ade80'
    case 'bearish':
      return '#ef4444'
    default:
      return '#555555'
  }
}