Episode description footer

app/controllers/feeds_controller.rb

@@ -148,6 +148,7 @@ def nilified_feed_params
       :sonic_id,
       :type,
       :apple_show_id,
+      :footer,
       itunes_category: [],
       itunes_subcategory: [],
       feed_tokens_attributes: %i[id label token _destroy],

app/helpers/podcasts_helper.rb

@@ -9,12 +9,20 @@ def feed_description(feed, podcast)
     [feed.description, podcast.description].detect { |d| d.present? } || ""
   end
 
-  def episode_description(episode)
-    if episode.podcast.has_apple_feed?
+  def episode_description(episode, feed)
+    description = if episode.podcast.has_apple_feed?
       episode.description_safe
     else
       episode.description_with_default
     end
+
+    if feed.footer.present?
+      footer_text = "\n\n#{feed.footer}"
+      description = description.truncate_bytes(Episode::MAX_DESCRIPTION_BYTES - footer_text.bytesize)
+      description += footer_text
+    end
+
+    description
   end
 
   def full_contact(type, item)

app/views/feeds/_form_main.html.erb

@@ -76,3 +76,11 @@
     <%= field_help_text t(".help.display_full_episodes_count") %>
   </div>
 </div>
+
+<div class="col-12 mb-4">
+  <div class="form-floating input-group">
+    <%= form.text_field :footer %>
+    <%= form.label :footer %>
+    <%= field_help_text t(".help.footer") %>
+  </div>
+</div>

app/views/podcasts/show.rss.builder

@@ -112,7 +112,7 @@ xml.rss "xmlns:atom" => "http://www.w3.org/2005/Atom",
         xml.title(ep.title)
         xml.pubDate ep.published_at.utc.rfc2822
         xml.link ep.url || ep.enclosure_url(@feed)
-        xml.description { xml.cdata!(episode_description(ep)) }
+        xml.description { xml.cdata!(episode_description(ep, @feed)) }
         # TODO: may not reflect the content_type/file_size of replaced media
         xml.enclosure(url: ep.enclosure_url(@feed), type: ep.media_content_type(@feed), length: ep.media_file_size) if ep.media?
 
@@ -165,7 +165,7 @@ xml.rss "xmlns:atom" => "http://www.w3.org/2005/Atom",
               url: ep.ready_transcript.url)
           end
 
-          xml.content(:encoded) { xml.cdata!(episode_description(ep)) }
+          xml.content(:encoded) { xml.cdata!(episode_description(ep, @feed)) }
         end
       end
     end

config/locales/en.yml

@@ -413,6 +413,7 @@ en:
         enclosure_prefix: Enclosure Prefix URL
         episode_offset_seconds: Episode Publish Offset
         file_name: File Name
+        footer: Episode Description Footer
         friendly_titles:
           apple: Apple Subscriptions
           default: Default RSS Feed
@@ -822,6 +823,7 @@ en:
         enclosure_prefix: If you have an enclosure prefix URL to set a redirect on audio requests for your podcast feed (e.g., podtrac or blubrry), enter it here.
         episode_offset_seconds: Instead of episodes immediately showing up in this feed when published, delay their appearance. AKA Windowing.
         file_name: The file name used for your private RSS feed.
+        footer: Text to be included at the end of each episode's description, such as a privacy policy link.
         slug: An alphanumeric slug used to identify your feed. Also used in the private feed RSS url.
         title: An alternate title for your feed, to distinguish it from the Default Feed
     form_overrides:

db/migrate/20241116011452_add_footer_to_feeds.rb

@@ -0,0 +1,5 @@
+class AddFooterToFeeds < ActiveRecord::Migration[7.2]
+  def change
+    add_column :feeds, :footer, :string
+  end
+end

test/helpers/podcasts_helper_test.rb

@@ -0,0 +1,27 @@
+require "test_helper"
+
+class TestHelper
+  include PodcastsHelper
+end
+
+describe PodcastsHelper do
+  let(:helper) { TestHelper.new }
+  let(:podcast) { build(:podcast, description: "description") }
+  let(:feed1) { podcast.default_feed }
+  let(:feed2) { build(:feed, private: true, podcast: podcast, slug: "adfree", footer: "footer", description: "different") }
+  let(:episode) { build(:episode, description: "description") }
+
+  describe "#feed_description" do
+    it "gets the feed or podcast description" do
+      assert_equal "description", feed_description(feed1, podcast)
+      assert_equal "different", feed_description(feed2, podcast)
+    end
+  end
+
+  describe "#episode_description" do
+    it "gets the episode description with a footer" do
+      assert_equal "description", episode_description(episode, feed1)
+      assert_equal "description\n\nfooter", episode_description(episode, feed2)
+    end
+  end
+end