export function formatRelativeTime(dateStr: string): string {
  const date = new Date(dateStr)
  const now = new Date()
  const diffMs = now.getTime() - date.getTime()
  const diffMin = Math.floor(diffMs / 60000)
  const diffHr = Math.floor(diffMin / 60)
  const diffDay = Math.floor(diffHr / 24)

  if (diffMin < 1) return 'Just now'
  if (diffMin < 60) return `${diffMin}m ago`
  if (diffHr < 24) return `${diffHr}h ago`
  if (diffDay < 7) return `${diffDay}d ago`

  return date.toLocaleDateString('en-US', {
    month: 'short',
    day: 'numeric',
    year: date.getFullYear() !== now.getFullYear() ? 'numeric' : undefined,
  })
}

export function formatFullDate(dateStr: string): string {
  return new Date(dateStr).toLocaleString('en-US', {
    weekday: 'short',
    month: 'short',
    day: 'numeric',
    year: 'numeric',
    hour: 'numeric',
    minute: '2-digit',
  })
}