import { config } from '../config.js'

export function addFilePrefix(url = '') {
  const value = String(url || '').trim()
  if (!value) return ''
  if (/^(https?:\/\/|data:image|blob:)/i.test(value)) {
    return value
  }
  return `${config.filePrefix}${value.startsWith('/') ? '' : '/'}${value}`
}