fix(tasks): SyncbackCategory does not need organizationUnit

spec/tasks/syncback-category-task-spec.coffee

@@ -13,15 +13,13 @@ describe "SyncbackCategoryTask", ->
     nameOf = (fn) ->
       fn.calls[0].args[0].body.display_name
 
-    makeTask = (orgUnit) ->
+    makeTask = (CategoryClass) ->
-      Category = if orgUnit is "label" then Label else Folder
+      category = new CategoryClass
-      category = new Category
         displayName: "important emails"
         accountId: "account 123"
         clientId: "local-444"
       new SyncbackCategoryTask
         category: category
-        organizationUnit: orgUnit
 
     beforeEach ->
       spyOn(NylasAPI, "makeRequest").andCallFake ->
@@ -29,28 +27,28 @@ describe "SyncbackCategoryTask", ->
       spyOn(DatabaseStore, "persistModel")
 
     it "sends API req to /labels if user uses labels", ->
-      task = makeTask "label"
+      task = makeTask(Label)
       task.performRemote({})
       expect(pathOf(NylasAPI.makeRequest)).toBe "/labels"
 
     it "sends API req to /folders if user uses folders", ->
-      task = makeTask "folder"
+      task = makeTask(Folder)
       task.performRemote({})
       expect(pathOf(NylasAPI.makeRequest)).toBe "/folders"
 
     it "sends the account id", ->
-      task = makeTask "label"
+      task = makeTask(Label)
       task.performRemote({})
       expect(accountIdOf(NylasAPI.makeRequest)).toBe "account 123"
 
     it "sends the display name in the body", ->
-      task = makeTask "label"
+      task = makeTask(Label)
       task.performRemote({})
       expect(nameOf(NylasAPI.makeRequest)).toBe "important emails"
 
     it "adds server id to the category, then saves the category", ->
       waitsForPromise ->
-        task = makeTask "label"
+        task = makeTask(Label)
         task.performRemote({})
         .then ->
           expect(DatabaseStore.persistModel).toHaveBeenCalled()

src/flux/tasks/syncback-category-task.coffee

@@ -1,5 +1,7 @@
 CategoryStore = require '../stores/category-store'
 DatabaseStore = require '../stores/database-store'
+Label = require '../models/label'
+Folder = require '../models/folder'
 {generateTempId} = require '../models/utils'
 Task = require './task'
 NylasAPI = require '../nylas-api'
@@ -7,11 +9,14 @@ NylasAPI = require '../nylas-api'
 
 module.exports = class SyncbackCategoryTask extends Task
 
-  constructor: ({@category, @organizationUnit}={}) ->
+  constructor: ({@category}={}) ->
     super
 
   label: ->
-    "Creating new #{@organizationUnit}..."
+    if @category instanceof Label
+      "Creating new label..."
+    else
+      "Creating new folder..."
 
   performLocal: ->
     # When we send drafts, we don't update anything in the app until
@@ -19,8 +24,6 @@ module.exports = class SyncbackCategoryTask extends Task
     # already sent when they haven't!
     if not @category
       return Promise.reject(new Error("Attempt to call SyncbackCategoryTask.performLocal without @category."))
-    else if @organizationUnit isnt "label" and @organizationUnit isnt "folder"
-      return Promise.reject(new Error("Attempt to call SyncbackCategoryTask.performLocal with @organizationUnit which wasn't 'folder' or 'label'."))
 
     if @_shouldChangeBackwards()
       DatabaseStore.unpersistModel @category
@@ -28,9 +31,9 @@ module.exports = class SyncbackCategoryTask extends Task
       DatabaseStore.persistModel @category
 
   performRemote: ->
-    if @organizationUnit is "label"
+    if @category instanceof Label
       path = "/labels"
-    else if @organizationUnit is "folder"
+    else
       path = "/folders"
 
     NylasAPI.makeRequest