overleaf/libraries/overleaf-editor-core/lib/v2_doc_versions.js

'use strict'

const _ = require('lodash')

/**
 * @typedef {import("./file")} File
 * @typedef {import("./types").RawV2DocVersions} RawV2DocVersions
 */

/**
 * @constructor
 * @param {RawV2DocVersions} data
 * @classdesc
 */
function V2DocVersions(data) {
  this.data = data || {}
}

V2DocVersions.fromRaw = function v2DocVersionsFromRaw(raw) {
  if (!raw) return undefined
  return new V2DocVersions(raw)
}

/**
 * @abstract
 */
V2DocVersions.prototype.toRaw = function () {
  if (!this.data) return null
  const raw = _.clone(this.data)
  return raw
}

/**
 * Clone this object.
 *
 * @return {V2DocVersions} a new object of the same type
 */
V2DocVersions.prototype.clone = function v2DocVersionsClone() {
  return V2DocVersions.fromRaw(this.toRaw())
}

V2DocVersions.prototype.applyTo = function v2DocVersionsApplyTo(snapshot) {
  // Only update the snapshot versions if we have new versions
  if (!_.size(this.data)) return

  // Create v2DocVersions in snapshot if it does not exist
  // otherwise update snapshot v2docversions
  if (!snapshot.v2DocVersions) {
    snapshot.v2DocVersions = this.clone()
  } else {
    _.assign(snapshot.v2DocVersions.data, this.data)
  }
}

module.exports = V2DocVersions