import { getFileIcon } from './fileIcons'

export const getPreviewType = (document) => {
  if (!document) return null
  const mime = (document.mimeType || '').toLowerCase()
  const path = document.path || ''

  const check = (prefix) => mime.startsWith(prefix) || path.startsWith(`data:${prefix}`)

  if (check('image/')) return 'image'
  if (mime === 'application/pdf' || path.startsWith('data:application/pdf')) return 'pdf'
  if (check('audio/')) return 'audio'
  if (check('video/')) return 'video'
  if (check('text/') || mime.includes('json') || mime.includes('xml') || path.startsWith('data:application/json')) return 'text'
  return null
}

export const canPreviewDocument = (document = {}) => !!getPreviewType(document)

export const describeDocument = (document) => {
  if (!document) return ''
  const name = document.filename || document.name || ''
  const icon = getFileIcon({ name, mime: document.mimeType })
  return icon.label
}