FEATURE: missing API endpoint for topic tracking states

app/controllers/users_controller.rb

@@ -7,7 +7,9 @@ class UsersController < ApplicationController
   skip_before_filter :authorize_mini_profiler, only: [:avatar]
   skip_before_filter :check_xhr, only: [:show, :password_reset, :update, :account_created, :activate_account, :perform_account_activation, :user_preferences_redirect, :avatar, :my_redirect, :toggle_anon, :admin_login]
 
-  before_filter :ensure_logged_in, only: [:username, :update, :user_preferences_redirect, :upload_user_image, :pick_avatar, :destroy_user_image, :destroy, :check_emails]
+  before_filter :ensure_logged_in, only: [:username, :update, :user_preferences_redirect, :upload_user_image,
+                                          :pick_avatar, :destroy_user_image, :destroy, :check_emails, :topic_tracking_state]
+
   before_filter :respond_to_suspicious_request, only: [:create]
 
   # we need to allow account creation with bad CSRF tokens, if people are caching, the CSRF token on the
@@ -140,6 +142,16 @@ class UsersController < ApplicationController
     render json: failed_json, status: 403
   end
 
+  def topic_tracking_state
+    user = fetch_user_from_params
+    guardian.ensure_can_edit!(user)
+
+    report = TopicTrackingState.report(user.id)
+    serializer = ActiveModel::ArraySerializer.new(report, each_serializer: TopicTrackingStateSerializer)
+
+    render json: MultiJson.dump(serializer)
+  end
+
   def badge_title
     params.require(:user_badge_id)
 

config/routes.rb

@@ -315,9 +315,7 @@ Discourse::Application.routes.draw do
   get "users/:username/preferences/card-badge" => "users#card_badge", constraints: {username: USERNAME_ROUTE_FORMAT}
   put "users/:username/preferences/card-badge" => "users#update_card_badge", constraints: {username: USERNAME_ROUTE_FORMAT}
   get "users/:username/staff-info" => "users#staff_info", constraints: {username: USERNAME_ROUTE_FORMAT}
-
   get "users/:username/summary" => "users#summary", constraints: {username: USERNAME_ROUTE_FORMAT}
-
   get "users/:username/invited" => "users#invited", constraints: {username: USERNAME_ROUTE_FORMAT}
   get "users/:username/invited_count" => "users#invited_count", constraints: {username: USERNAME_ROUTE_FORMAT}
   get "users/:username/invited/:filter" => "users#invited", constraints: {username: USERNAME_ROUTE_FORMAT}
@@ -339,6 +337,9 @@ Discourse::Application.routes.draw do
   get "users/by-external/:external_id" => "users#show", constraints: {external_id: /[^\/]+/}
   get "users/:username/flagged-posts" => "users#show", constraints: {username: USERNAME_ROUTE_FORMAT}
   get "users/:username/deleted-posts" => "users#show", constraints: {username: USERNAME_ROUTE_FORMAT}
+
+  get "users/:username/topic-tracking-state" => "users#topic_tracking_state", constraints: {username: USERNAME_ROUTE_FORMAT}
+
   get "user-badges/:username.json" => "user_badges#username", constraints: {username: USERNAME_ROUTE_FORMAT}, defaults: {format: :json}
   get "user-badges/:username" => "user_badges#username", constraints: {username: USERNAME_ROUTE_FORMAT}
 

spec/controllers/users_controller_spec.rb

@@ -1625,7 +1625,32 @@ describe UsersController do
 
   end
 
-  context '#summary' do
+  describe '.topic_tracking_state' do
+    let(:user){Fabricate(:user)}
+
+    context 'anon' do
+      it "raises an error on anon for topic_tracking_state" do
+        expect{
+          xhr :get, :topic_tracking_state, username: user.username, format: :json
+        }.to raise_error(Discourse::NotLoggedIn)
+      end
+    end
+
+    context 'logged on' do
+      it "detects new topic" do
+        log_in_user(user)
+
+        topic = Fabricate(:topic)
+        xhr :get, :topic_tracking_state, username: user.username, format: :json
+
+        states = JSON.parse(response.body)
+
+        expect(states[0]["topic_id"]).to eq(topic.id)
+      end
+    end
+  end
+
+  describe '.summary' do
 
     it "generates summary info" do
       user = Fabricate(:user)