Include invites count in `canAddXCollaborators`

services/web/app/coffee/Features/Collaborators/CollaboratorsInviteHandler.coffee

@@ -17,6 +17,14 @@ module.exports = CollaboratorsInviteHandler =
 				return callback(err)
 			callback(null, invites)
 
+	getInviteCount: (projectId, callback=(err, count)->) ->
+		logger.log {projectId}, "counting invites for project"
+		ProjectInvite.count {projectId: projectId}, (err, count) ->
+			if err?
+				logger.err {err, projectId}, "error getting invites from mongo"
+				return callback(err)
+			callback(null, count)
+
 	inviteToProject: (projectId, sendingUserId, email, privileges, callback=(err,invite)->) ->
 		logger.log {projectId, sendingUserId, email, privileges}, "adding invite"
 		Crypto.randomBytes 24, (err, buffer) ->

services/web/app/coffee/Features/Subscription/LimitationsManager.coffee

@@ -4,6 +4,7 @@ User = require("../../models/User").User
 SubscriptionLocator = require("./SubscriptionLocator")
 Settings = require("settings-sharelatex")
 CollaboratorsHandler = require("../Collaborators/CollaboratorsHandler")
+CollaboratorsInvitesHandler = require("../Collaborators/CollaboratorsInviteHandler")
 
 module.exports =
 
@@ -20,10 +21,12 @@ module.exports =
 			return callback(error) if error?
 			CollaboratorsHandler.getCollaboratorCount project_id, (error, current_number) =>
 				return callback(error) if error?
-				if current_number + x_collaborators <= allowed_number or allowed_number < 0
-					callback null, true
-				else
-					callback null, false
+				CollaboratorsInvitesHandler.getInviteCount project_id, (error, invite_count) =>
+					return callback(error) if error?
+					if current_number + invite_count + x_collaborators <= allowed_number or allowed_number < 0
+						callback null, true
+					else
+						callback null, false
 
 	userHasSubscriptionOrIsGroupMember: (user, callback = (err, hasSubscriptionOrIsMember)->) ->
 		@userHasSubscription user, (err, hasSubscription, subscription)=>
@@ -41,7 +44,7 @@ module.exports =
 			hasValidSubscription = subscription? and (subscription.recurlySubscription_id? or subscription?.customAccount == true)
 			logger.log user:user, hasValidSubscription:hasValidSubscription, subscription:subscription, "checking if user has subscription"
 			callback err, hasValidSubscription, subscription
-			
+
 	userIsMemberOfGroupSubscription: (user, callback = (error, isMember, subscriptions) ->) ->
 		logger.log user_id: user._id, "checking is user is member of subscription groups"
 		SubscriptionLocator.getMemberSubscriptions user._id, (err, subscriptions = []) ->
@@ -65,4 +68,3 @@ getOwnerOfProject = (project_id, callback)->
 		return callback(error) if error?
 		User.findById project.owner_ref, (error, owner) ->
 			callback(error, owner)
-

services/web/test/UnitTests/coffee/Subscription/LimitationsManagerTests.coffee

@@ -30,6 +30,7 @@ describe "LimitationsManager", ->
 			'./SubscriptionLocator':@SubscriptionLocator
 			'settings-sharelatex' : @Settings = {}
 			"../Collaborators/CollaboratorsHandler": @CollaboratorsHandler = {}
+			"../Collaborators/CollaboratorsInviteHandler": @CollaboratorsInviteHandler = {}
 			'logger-sharelatex':log:->
 
 	describe "allowedNumberOfCollaboratorsInProject", ->
@@ -56,6 +57,7 @@ describe "LimitationsManager", ->
 	describe "canAddXCollaborators", ->
 		beforeEach ->
 			@CollaboratorsHandler.getCollaboratorCount = (project_id, callback) => callback(null, @current_number)
+			@CollaboratorsInviteHandler.getInviteCount = (project_id, callback) => callback(null, @invite_count)
 			sinon.stub @LimitationsManager,
 					   "allowedNumberOfCollaboratorsInProject",
 					   (project_id, callback) => callback(null, @allowed_number)
@@ -65,6 +67,17 @@ describe "LimitationsManager", ->
 			beforeEach ->
 				@current_number = 1
 				@allowed_number = 2
+				@invite_count = 0
+				@LimitationsManager.canAddXCollaborators(@project_id, 1, @callback)
+
+			it "should return true", ->
+				@callback.calledWith(null, true).should.equal true
+
+		describe "when the project has fewer collaborators and invites than allowed", ->
+			beforeEach ->
+				@current_number = 1
+				@allowed_number = 4
+				@invite_count = 1
 				@LimitationsManager.canAddXCollaborators(@project_id, 1, @callback)
 
 			it "should return true", ->
@@ -74,6 +87,7 @@ describe "LimitationsManager", ->
 			beforeEach ->
 				@current_number = 1
 				@allowed_number = 2
+				@invite_count = 0
 				@LimitationsManager.canAddXCollaborators(@project_id, 2, @callback)
 
 			it "should return false", ->
@@ -83,6 +97,7 @@ describe "LimitationsManager", ->
 			beforeEach ->
 				@current_number = 3
 				@allowed_number = 2
+				@invite_count = 0
 				@LimitationsManager.canAddXCollaborators(@project_id, 1, @callback)
 
 			it "should return false", ->
@@ -92,11 +107,31 @@ describe "LimitationsManager", ->
 			beforeEach ->
 				@current_number = 100
 				@allowed_number = -1
+				@invite_count = 0
 				@LimitationsManager.canAddXCollaborators(@project_id, 1, @callback)
 
 			it "should return true", ->
 				@callback.calledWith(null, true).should.equal true
 
+		describe 'when the project has more invites than allowed', ->
+			beforeEach ->
+				@current_number = 0
+				@allowed_number = 2
+				@invite_count = 2
+				@LimitationsManager.canAddXCollaborators(@project_id, 1, @callback)
+
+			it "should return false", ->
+				@callback.calledWith(null, false).should.equal true
+
+		describe 'when the project has more invites and collaborators than allowed', ->
+			beforeEach ->
+				@current_number = 1
+				@allowed_number = 2
+				@invite_count = 1
+				@LimitationsManager.canAddXCollaborators(@project_id, 1, @callback)
+
+			it "should return false", ->
+				@callback.calledWith(null, false).should.equal true
 
 	describe "userHasSubscription", ->
 		beforeEach ->
@@ -193,7 +228,7 @@ describe "LimitationsManager", ->
 			@LimitationsManager.userHasSubscriptionOrIsGroupMember @user, (err, hasSubOrIsGroupMember)->
 				hasSubOrIsGroupMember.should.equal false
 				done()
-				
+
 	describe "hasGroupMembersLimitReached", ->
 
 		beforeEach ->
@@ -214,10 +249,10 @@ describe "LimitationsManager", ->
 			@LimitationsManager.hasGroupMembersLimitReached @user_id, (err, limitReached)->
 				limitReached.should.equal false
 				done()
-				
+
 		it "should return true if the limit has been exceded", (done)->
 			@subscription.membersLimit = 0
 			@SubscriptionLocator.getUsersSubscription.callsArgWith(1, null, @subscription)
 			@LimitationsManager.hasGroupMembersLimitReached @user_id, (err, limitReached)->
 				limitReached.should.equal true
-				done()
+				done()