overleaf/services/web/app/coffee/Features/History/RestoreManager.coffee

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Settings = require 'settings-sharelatex'
Path = require 'path'
FileWriter = require '../../infrastructure/FileWriter'
FileSystemImportManager = require '../Uploads/FileSystemImportManager'
ProjectEntityHandler = require '../Project/ProjectEntityHandler'
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ProjectLocator = require '../Project/ProjectLocator'
EditorController = require '../Editor/EditorController'
Errors = require '../Errors/Errors'
moment = require 'moment'
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module.exports = RestoreManager =
restoreDocFromDeletedDoc: (user_id, project_id, doc_id, name, callback = (error, doc, folder_id) ->) ->
# This is the legacy method for restoring a doc from the SL track-changes/deletedDocs system.
# It looks up the deleted doc's contents, and then creates a new doc with the same content.
# We don't actually remove the deleted doc entry, just create a new one from its lines.
ProjectEntityHandler.getDoc project_id, doc_id, include_deleted: true, (error, lines) ->
return callback(error) if error?
addDocWithName = (name, callback) ->
EditorController.addDoc project_id, null, name, lines, 'restore', user_id, callback
RestoreManager._addEntityWithUniqueName addDocWithName, name, callback
restoreFileFromV2: (user_id, project_id, version, pathname, callback = (error, entity) ->) ->
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RestoreManager._writeFileVersionToDisk project_id, version, pathname, (error, fsPath) ->
return callback(error) if error?
basename = Path.basename(pathname)
dirname = Path.dirname(pathname)
if dirname == '.' # no directory
dirname = ''
RestoreManager._findOrCreateFolder project_id, dirname, (error, parent_folder_id) ->
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return callback(error) if error?
addEntityWithName = (name, callback) ->
FileSystemImportManager.addEntity user_id, project_id, parent_folder_id, name, fsPath, false, callback
RestoreManager._addEntityWithUniqueName addEntityWithName, basename, callback
_findOrCreateFolder: (project_id, dirname, callback = (error, folder_id) ->) ->
EditorController.mkdirp project_id, dirname, (error, newFolders, lastFolder) ->
return callback(error) if error?
return callback(null, lastFolder?._id)
_addEntityWithUniqueName: (addEntityWithName, basename, callback = (error) ->) ->
addEntityWithName basename, (error, entity) ->
if error?
if error instanceof Errors.InvalidNameError
# likely a duplicate name, so try with a prefix
date = moment(new Date()).format('Do MMM YY H:mm:ss')
# Move extension to the end so the file type is preserved
extension = Path.extname(basename)
basename = Path.basename(basename, extension)
basename = "#{basename} (Restored on #{date})"
if extension != ''
basename = "#{basename}#{extension}"
addEntityWithName basename, callback
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else
callback(error)
else
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callback(null, entity)
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_writeFileVersionToDisk: (project_id, version, pathname, callback = (error, fsPath) ->) ->
url = "#{Settings.apis.project_history.url}/project/#{project_id}/version/#{version}/#{encodeURIComponent(pathname)}"
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FileWriter.writeUrlToDisk project_id, url, callback