WIP: initial work on server-side labels

services/web/app/coffee/Features/Labels/LabelsController.coffee

@@ -0,0 +1,14 @@
+EditorRealTimeController = require "../Editor/EditorRealTimeController"
+LabelsHandler = require './LabelsHandler'
+logger = require 'logger-sharelatex'
+
+
+module.exports = LabelsController =
+
+	getAllLabels: (req, res, next) ->
+		project_id = req.params.Project_id
+		LabelsHandler.getAllLabelsForProject project_id, (err, projectLabels) ->
+			if err?
+				logger.err {project_id, err}, "[LabelsController] error getting all labels from project"
+				return next(err)
+			res.json {projectId: project_id, labels: projectLabels}

services/web/app/coffee/Features/Labels/LabelsHandler.coffee

@@ -0,0 +1,28 @@
+ProjectEntityHandler = require "../Project/ProjectEntityHandler"
+
+
+module.exports = LabelsHandler =
+
+	labelCaptureRegex: () ->
+		/\\label\{([^\}\n\\]{0,80})\}/g
+
+	getAllLabelsForProject: (projectId, callback=(err, projectLabels)->) ->
+		ProjectEntityHandler.getAllDocs projectId, (err, docs) ->
+			if err?
+				return callback(err)
+			LabelsHandler.extractLabelsFromDocs docs, (err, projectLabels) ->
+				if err?
+					return callback(err)
+				callback(null, projectLabels)
+
+	extractLabelsFromDocs: (docs, callback=(err, projectLabels)->) ->
+		projectLabels = {}  # docId => List[Label]
+		for docPath, doc of docs
+			docLabels = []
+			for line in doc.lines
+				re = LabelsHandler.labelCaptureRegex()
+				while (labelMatch = re.exec(line))
+					if labelMatch[1]
+						docLabels.push(labelMatch[1])
+			projectLabels[doc._id] = docLabels
+		callback(null, projectLabels)

services/web/app/coffee/router.coffee

@@ -43,6 +43,7 @@ SudoModeController = require('./Features/SudoMode/SudoModeController')
 SudoModeMiddlewear = require('./Features/SudoMode/SudoModeMiddlewear')
 AnalyticsRouter = require('./Features/Analytics/AnalyticsRouter')
 AnnouncementsController = require("./Features/Announcements/AnnouncementsController")
+LabelsController = require('./Features/Labels/LabelsController')
 
 logger = require("logger-sharelatex")
 _ = require("underscore")
@@ -193,6 +194,8 @@ module.exports = class Router
 		webRouter.get  '/Project/:Project_id/download/zip', AuthorizationMiddlewear.ensureUserCanReadProject, ProjectDownloadsController.downloadProject
 		webRouter.get  '/project/download/zip', AuthorizationMiddlewear.ensureUserCanReadMultipleProjects, ProjectDownloadsController.downloadMultipleProjects
 
+		webRouter.get '/project/:Project_id/labels', AuthorizationMiddlewear.ensureUserCanReadProject, AuthenticationController.requireLogin(), LabelsController.getAllLabels
+
 		webRouter.get    '/tag', AuthenticationController.requireLogin(), TagsController.getAllTags
 		webRouter.post   '/tag', AuthenticationController.requireLogin(), TagsController.createTag
 		webRouter.post   '/tag/:tag_id/rename', AuthenticationController.requireLogin(), TagsController.renameTag

services/web/public/coffee/ide/editor/directives/aceEditor/labels/LabelsManager.coffee

@@ -12,6 +12,9 @@ define [
 	class LabelsManager
 		constructor: (@$scope, @editor, @element) ->
 
+			window.GET_LABELS = () =>
+				@loadProjectLabelsFromServer()
+
 			@state =
 				documents: {} # map of DocId => List[Label]
 
@@ -35,10 +38,22 @@ define [
 				e.session.on "change", onChange
 				setTimeout(
 					() =>
-						@scheduleLoadLabelsFromOpenDoc()
+						# @scheduleLoadLabelsFromOpenDoc()
+						@loadProjectLabelsFromServer()
 					, 0
 				)
 
+		loadProjectLabelsFromServer: () ->
+			$.get(
+				"/project/#{window.project_id}/labels"
+				, (data) =>
+					console.log ">>", data
+					if data.labels
+						for docId, docLabels of data.labels
+							@state.documents[docId] = docLabels
+					console.log @state.documents
+			)
+
 		loadLabelsFromOpenDoc: () ->
 			docId = @$scope.docId
 			docText = @editor.getValue()