feat: add sitemap for help center (#9280)

* feat: start sitemap

* feat: add base url and last mod to sitemap

* fix: typo

* test: sitemap generation

* test: add draft articles

* fix: escape dots in regex matching

* feat: perpend protocol to the url

* feat: use ChatwootApp.help_center_root

* feat: don't parse the URL

* fix: function declaration

app/controllers/public/api/v1/portals_controller.rb

@@ -6,6 +6,12 @@ class Public::Api::V1::PortalsController < Public::Api::V1::Portals::BaseControl
 
   def show; end
 
+  def sitemap
+    @help_center_url = @portal.custom_domain || ChatwootApp.help_center_root
+    # if help_center_url does not contain a protocol, prepend it with https
+    @help_center_url = "https://#{@help_center_url}" unless @help_center_url.include?('://')
+  end
+
   private
 
   def portal

app/views/public/api/v1/portals/sitemap.xml.erb

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<sitemapindex>
+  <% @portal.articles.where(status: :published).each do |article| %>
+    <sitemap>
+      <loc><%= @help_center_url %><%= generate_article_link(@portal.slug, article.slug, false, false) %></loc>
+      <lastmod><%= article.updated_at.strftime("%Y-%m-%d") %></lastmod>
+    </sitemap>
+  <% end %>
+</sitemapindex>

config/routes.rb

@@ -393,6 +393,7 @@
   end
 
   get 'hc/:slug', to: 'public/api/v1/portals#show'
+  get 'hc/:slug/sitemap.xml', to: 'public/api/v1/portals#sitemap'
   get 'hc/:slug/:locale', to: 'public/api/v1/portals#show'
   get 'hc/:slug/:locale/articles', to: 'public/api/v1/portals/articles#index'
   get 'hc/:slug/:locale/categories', to: 'public/api/v1/portals/categories#index'

lib/chatwoot_app.rb

@@ -21,6 +21,10 @@ def self.custom?
     @custom ||= root.join('custom').exist?
   end
 
+  def self.help_center_root
+    ENV.fetch('HELPCENTER_URL', nil) || ENV.fetch('FRONTEND_URL', nil)
+  end
+
   def self.extensions
     if custom?
       %w[enterprise custom]

spec/controllers/public/api/v1/portals_controller_spec.rb

@@ -1,12 +1,15 @@
 require 'rails_helper'
 
-RSpec.describe 'Public Portals API', type: :request do
+RSpec.describe Public::Api::V1::PortalsController, type: :request do
   let!(:account) { create(:account) }
+  let!(:agent) { create(:user, account: account, role: :agent) }
   let!(:portal) { create(:portal, slug: 'test-portal', account_id: account.id, custom_domain: 'www.example.com') }
 
   before do
     create(:portal, slug: 'test-portal-1', account_id: account.id)
     create(:portal, slug: 'test-portal-2', account_id: account.id)
+    create_list(:article, 3, account: account, author: agent, portal: portal, status: :published)
+    create_list(:article, 2, account: account, author: agent, portal: portal, status: :draft)
   end
 
   describe 'GET /public/api/v1/portals/{portal_slug}' do
@@ -28,4 +31,28 @@
       Please send us an email at support@chatwoot.com with the custom domain name and account API key"
     end
   end
+
+  describe 'GET /public/api/v1/portals/{portal_slug}/sitemap' do
+    context 'when custom_domain is present' do
+      it 'gets a valid sitemap' do
+        get "/hc/#{portal.slug}/sitemap.xml"
+        expect(response).to have_http_status(:success)
+        expect(response.body).to match(/<sitemap/)
+        expect(Nokogiri::XML(response.body).errors).to be_empty
+      end
+
+      it 'has valid sitemap links' do
+        get "/hc/#{portal.slug}/sitemap.xml"
+        expect(response).to have_http_status(:success)
+        parsed_xml = Nokogiri::XML(response.body)
+        links = parsed_xml.css('loc')
+
+        links.each do |link|
+          expect(link.text).to match(%r{https://www\.example\.com/hc/test-portal/articles/\d+})
+        end
+
+        expect(links.length).to eq 3
+      end
+    end
+  end
 end