fix project structure version when deleting folder

services/web/app/coffee/Features/Project/ProjectEntityUpdateHandler.coffee

@@ -405,6 +405,8 @@ module.exports = ProjectEntityUpdateHandler = self =
 				DocumentUpdaterHandler.resyncProjectHistory project_id, projectHistoryId, docs, files, callback
 
 	_cleanUpEntity: (project, entity, entityType, path, userId, callback = (error) ->) ->
+		self._updateProjectStructure project, entity, entityType, path, userId, (error) ->
+			return callback(error) if error?
 			if(entityType.indexOf("file") != -1)
 				self._cleanUpFile project, entity, path, userId, callback
 			else if (entityType.indexOf("doc") != -1)
@@ -414,6 +416,27 @@ module.exports = ProjectEntityUpdateHandler = self =
 			else
 				callback()
 
+	_updateProjectStructure: (project, entity, entityType, entityPath, userId, callback = (error) ->) ->
+		# compute the changes to the project structure
+		if(entityType.indexOf("file") != -1)
+			changes = oldFiles: [ {file: entity, path: entityPath} ]
+		else if (entityType.indexOf("doc") != -1)
+			changes = oldDocs: [ {doc: entity, path: entityPath} ]
+		else if (entityType.indexOf("folder") != -1)
+			changes = {oldDocs: [], oldFiles: []}
+			_recurseFolder = (folder, folderPath) ->
+				for doc in folder.docs
+					changes.oldDocs.push {doc, path: path.join(folderPath, doc.name)}
+				for file in folder.fileRefs
+					changes.oldFiles.push {file, path: path.join(folderPath, file.name)}
+				for childFolder in folder.folders
+					_recurseFolder(childFolder, path.join(folderPath, childFolder.name))
+			_recurseFolder entity, entityPath
+		# now send the project structure changes to the docupdater
+		project_id = project._id.toString()
+		projectHistoryId = project.overleaf?.history?.id
+		DocumentUpdaterHandler.updateProjectStructure project_id, projectHistoryId, userId, changes, callback
+
 	_cleanUpDoc: (project, doc, path, userId, callback = (error) ->) ->
 		project_id = project._id.toString()
 		doc_id = doc._id.toString()
@@ -429,21 +452,10 @@ module.exports = ProjectEntityUpdateHandler = self =
 				return callback(error) if error?
 				DocumentUpdaterHandler.deleteDoc project_id, doc_id, (error) ->
 					return callback(error) if error?
-					DocstoreManager.deleteDoc project_id, doc_id, (error) ->
+					DocstoreManager.deleteDoc project_id, doc_id, callback
-						return callback(error) if error?
-						changes = oldDocs: [ {doc, path} ]
-						projectHistoryId = project.overleaf?.history?.id
-						DocumentUpdaterHandler.updateProjectStructure project_id, projectHistoryId, userId, changes, callback
 
 	_cleanUpFile: (project, file, path, userId, callback = (error) ->) ->
-		ProjectEntityMongoUpdateHandler._insertDeletedFileReference project._id, file, (error) ->
+		ProjectEntityMongoUpdateHandler._insertDeletedFileReference project._id, file, callback
-			return callback(error) if error?
-			project_id = project._id.toString()
-			projectHistoryId = project.overleaf?.history?.id
-			changes = oldFiles: [ {file, path} ]
-			# we are now keeping a copy of every file versio so we no longer delete
-			# the file from the filestore
-			DocumentUpdaterHandler.updateProjectStructure project_id, projectHistoryId, userId, changes, callback
 
 	_cleanUpFolder: (project, folder, folderPath, userId, callback = (error) ->) ->
 		jobs = []

services/web/test/unit/coffee/Project/ProjectEntityUpdateHandlerTests.coffee

@@ -872,6 +872,12 @@ describe 'ProjectEntityUpdateHandler', ->
 					.calledWith(@project, @entity, @path, userId)
 					.should.equal true
 
+			it "should should send the update to the doc updater", ->
+				oldDocs = [ doc: @entity, path: @path ]
+				@DocumentUpdaterHandler.updateProjectStructure
+					.calledWith(project_id, projectHistoryId, userId, {oldDocs})
+					.should.equal true
+
 		describe "a folder", ->
 			beforeEach (done) ->
 				@folder =
@@ -905,6 +911,13 @@ describe 'ProjectEntityUpdateHandler', ->
 					.calledWith(@project, @doc2, "/folder/doc-name-2", userId)
 					.should.equal true
 
+			it "should should send one update to the doc updater for all docs and files", ->
+				oldFiles = [ {file: @file2, path: "/folder/file-name-2"}, {file: @file1, path: "/folder/subfolder/file-name-1"} ]
+				oldDocs = [ {doc: @doc2, path: "/folder/doc-name-2"}, { doc: @doc1, path: "/folder/subfolder/doc-name-1"} ]
+				@DocumentUpdaterHandler.updateProjectStructure
+					.calledWith(project_id, projectHistoryId, userId, {oldFiles, oldDocs})
+					.should.equal true
+
 	describe "_cleanUpDoc", ->
 		beforeEach ->
 			@doc =
@@ -941,12 +954,6 @@ describe 'ProjectEntityUpdateHandler', ->
 					.calledWith(project_id, @doc._id.toString())
 					.should.equal true
 
-			it "should should send the update to the doc updater", ->
-				oldDocs = [ doc: @doc, path: @path ]
-				@DocumentUpdaterHandler.updateProjectStructure
-					.calledWith(project_id, projectHistoryId, userId, {oldDocs})
-					.should.equal true
-
 			it "should call the callback", ->
 				@callback.called.should.equal true