adapter.js

const querystring = require('node:querystring')

// @todo use the "about" endpoint to get the username instead
// see: https://developers.google.com/drive/api/v2/reference/about/get
exports.getUsername = (data) => {
  for (const item of data.files) {
    if (item.ownedByMe && item.permissions) {
      for (const permission of item.permissions) {
        if (permission.role === 'owner') {
          return permission.emailAddress
        }
      }
    }
  }
  return undefined
}

exports.isFolder = (item) => {
  return item.mimeType === 'application/vnd.google-apps.folder' || exports.isSharedDrive(item)
}

exports.isShortcut = (mimeType) => {
  return mimeType === 'application/vnd.google-apps.shortcut'
}

exports.getItemSize = (item) => {
  return parseInt(item.size, 10)
}

exports.getItemIcon = (item) => {
  if (exports.isSharedDrive(item)) {
    const size = '=w16-h16-n'
    const sizeParamRegex = /=[-whncsp0-9]*$/
    return item.backgroundImageLink.match(sizeParamRegex)
      ? item.backgroundImageLink.replace(sizeParamRegex, size)
      : `${item.backgroundImageLink}${size}`
  }

  if (item.thumbnailLink && !item.mimeType.startsWith('application/vnd.google')) {
    const smallerThumbnailLink = item.thumbnailLink.replace('s220', 's40')
    return smallerThumbnailLink
  }

  return item.iconLink
}

exports.getItemSubList = (item) => {
  const allowedGSuiteTypes = [
    'application/vnd.google-apps.document',
    'application/vnd.google-apps.drawing',
    'application/vnd.google-apps.script',
    'application/vnd.google-apps.spreadsheet',
    'application/vnd.google-apps.presentation',
    'application/vnd.google-apps.shortcut',
  ]

  return item.files.filter((i) => {
    return exports.isFolder(i) || !exports.isGsuiteFile(i.mimeType) || allowedGSuiteTypes.includes(i.mimeType)
  })
}

exports.getItemName = (item) => {
  const extensionMaps = {
    'application/vnd.google-apps.document': '.docx',
    'application/vnd.google-apps.drawing': '.png',
    'application/vnd.google-apps.script': '.json',
    'application/vnd.google-apps.spreadsheet': '.xlsx',
    'application/vnd.google-apps.presentation': '.ppt',
  }

  const extension = extensionMaps[item.mimeType]
  if (extension && item.name && !item.name.endsWith(extension)) {
    return item.name + extension
  }

  return item.name ? item.name : '/'
}

function getMimeType (mimeType) {
  if (exports.isGsuiteFile(mimeType)) {
    return exports.getGsuiteExportType(mimeType)
  }
  return mimeType
}

exports.getMimeType = (item) => {
  if (exports.isShortcut(item.mimeType)) {
    return getMimeType(item.shortcutDetails.targetMimeType)
  }
  return getMimeType(item.mimeType)
}

exports.getItemId = (item) => {
  return item.id
}

exports.getItemRequestPath = (item) => {
  return item.id
}

exports.getItemModifiedDate = (item) => {
  return item.modifiedTime
}

exports.getItemThumbnailUrl = (item) => {
  return item.thumbnailLink
}

exports.isSharedDrive = (item) => {
  return item.kind === 'drive#drive'
}

exports.getNextPagePath = (data, currentQuery, currentPath) => {
  if (!data.nextPageToken) {
    return null
  }
  const query = { ...currentQuery, cursor: data.nextPageToken }
  return `${currentPath}?${querystring.stringify(query)}`
}

exports.isGsuiteFile = (mimeType) => {
  return mimeType && mimeType.startsWith('application/vnd.google')
}

exports.getGsuiteExportType = (mimeType) => {
  const typeMaps = {
    'application/vnd.google-apps.document': 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
    'application/vnd.google-apps.drawing': 'image/png',
    'application/vnd.google-apps.script': 'application/vnd.google-apps.script+json',
    'application/vnd.google-apps.spreadsheet': 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
    'application/vnd.google-apps.presentation': 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
  }

  return typeMaps[mimeType] || 'application/pdf'
}

exports.getImageHeight = (item) => item.imageMediaMetadata && item.imageMediaMetadata.height

exports.getImageWidth = (item) => item.imageMediaMetadata && item.imageMediaMetadata.width

exports.getImageRotation = (item) => item.imageMediaMetadata && item.imageMediaMetadata.rotation

exports.getImageDate = (item) => item.imageMediaMetadata && item.imageMediaMetadata.date

exports.getVideoHeight = (item) => item.videoMediaMetadata && item.videoMediaMetadata.height

exports.getVideoWidth = (item) => item.videoMediaMetadata && item.videoMediaMetadata.width

exports.getVideoDurationMillis = (item) => item.videoMediaMetadata && item.videoMediaMetadata.durationMillis