@eluvio/elv-utils-js/lib/concerns/LocalFile.js

Utilities for the Eluvio Content Fabric

// code related to opening local files (generally for upload to fabric)
const fs = require('fs')
const path = require('path')
const mime = require('mime-types')

const {absPath} = require('../helpers')
const {StdOpt} = require('../options')

const Client = require('./Client')
const Logger = require('./Logger')

const blueprint = {
  name: 'LocalFile',
  concerns: [Logger, Client],
  options: [
    StdOpt('files', {demand: true}),
  ]
}

const New = context => {

  const add = async ({libraryId, objectId, writeToken, fileInfo, encrypt}) => {
    const client = await context.concerns.Client.get()
    await client.UploadFiles({
      libraryId,
      objectId,
      writeToken,
      fileInfo,
      callback,
      encryption: encrypt ? 'cgck' : 'none'
    })
  }

  const callback = progress => {
    Object.keys(progress).sort().forEach(filename => {
      const {uploaded, total} = progress[filename]
      const percentage = total === 0 ? '100.0%' : (100 * uploaded / total).toFixed(1) + '%'
      context.concerns.Logger.log(`${filename}: ${percentage}`)
    })
  }

  const closeFileHandles = fileHandles => fileHandles.forEach(descriptor => fs.closeSync(descriptor))

  const fileInfo = fileHandles => {
    return context.args.files.map(filePath => {
      const fullPath = absPath(filePath, context.cwd)
      const fileDescriptor = fs.openSync(fullPath, 'r')
      fileHandles.push(fileDescriptor)
      const size = fs.fstatSync(fileDescriptor).size
      const mimeType = mime.lookup(fullPath) || 'video/mp4'

      return {
        path: path.basename(fullPath),
        type: 'file',
        mime_type: mimeType,
        size: size,
        data: fileDescriptor
      }
    })
  }

  return {add, callback, closeFileHandles, fileInfo}
}

module.exports = {blueprint, New}