prisme-flow/nodes/bridge/bot/lib/buffer-transformers.js

prisme platform flow engine

/**
 * Created by prisme.io on 09/06/2017.
 */

var _ = require('underscore')
var JSZip = require('jszip')

module.exports = {

  identity: function (file) {
    return new Promise(function (resolve) {
      resolve(file)
    })
  },

  zip: function (file) {
    return new Promise(function (resolve) {
      var zip = new JSZip()
      zip.file(file.filename, file.buffer)
      zip.generateAsync({type: 'nodebuffer'})
        .then(function (zippedBuffer) {
          var newFile = _.extend({}, file, {
            buffer: zippedBuffer,
            filename: file.filename.substr(0, file.filename.lastIndexOf('.')) + '.zip',
            extension: '.zip',
            mimeType: 'application/zip'
          })
          resolve(newFile)
        })
    })
  }

}