// frontend/lib/utils.ts

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

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

export function formatBytes(bytes: number): string {
  if (bytes === 0) return '0 B'
  const k     = 1024
  const sizes = ['B', 'KB', 'MB', 'GB']
  const i     = Math.floor(Math.log(bytes) / Math.log(k))
  return `${parseFloat((bytes / Math.pow(k, i)).toFixed(1))} ${sizes[i]}`
}

export function formatMs(ms: number): string {
  if (ms < 1000) return `${Math.round(ms)}ms`
  return `${(ms / 1000).toFixed(1)}s`
}

export function formatConfidence(confidence: number): string {
  return `${(confidence * 100).toFixed(1)}%`
}

export function clampConfidence(v: number): number {
  return Math.max(0, Math.min(1, v))
}