Truncate description for shows with Apple feeds

app/helpers/podcasts_helper.rb

@@ -5,6 +5,18 @@ module PodcastsHelper
 
   RSS_LANGUAGE_CODES = %w[af sq eu be bg ca zh-cn zh-tw hr cs da nl nl-be nl-nl en en-au en-bz en-ca en-ie en-jm en-nz en-ph en-za en-tt en-gb en-us en-zw et fo fi fr fr-be fr-ca fr-fr fr-lu fr-mc fr-ch gl gd de de-at de-de de-li de-lu de-ch el haw hu is in ga it it-it it-ch ja ko mk no pl pt pt-br pt-pt ro ro-mo ro-ro ru ru-mo ru-ru sr sk sl es es-ar es-bo es-cl es-co es-cr es-do es-ec es-sv es-gt es-hn es-mx es-ni es-pa es-py es-pe es-pr es-es es-uy es-ve sv sv-fi sv-se tr uk]
 
+  def feed_description(feed, podcast)
+    [feed.description, podcast.description].detect { |d| d.present? } || ""
+  end
+
+  def episode_description(episode)
+    if episode.podcast.has_apple_feed?
+      episode.description_safe
+    else
+      episode.description_with_default
+    end
+  end
+
   def full_contact(type, item)
     name = item.try("#{type}_name")
     email = item.try("#{type}_email")

app/models/apple/episode.rb

@@ -290,7 +290,7 @@ def episode_create_parameters
             guid: guid,
             title: feeder_episode.title,
             originalReleaseDate: feeder_episode.published_at.utc.iso8601,
-            description: feeder_episode.description_with_default,
+            description: feeder_episode.description_safe,
             websiteUrl: feeder_episode.url,
             explicit: explicit,
             episodeNumber: feeder_episode.episode_number,

app/models/episode.rb

@@ -15,6 +15,7 @@ class Episode < ApplicationRecord
   include ReleaseEpisodes
 
   MAX_SEGMENT_COUNT = 10
+  MAX_DESCRIPTION_BYTES = 4000
   VALID_ITUNES_TYPES = %w[full trailer bonus]
   DROP_DATE = "COALESCE(episodes.published_at, episodes.released_at)"
 
@@ -41,7 +42,7 @@ class Episode < ApplicationRecord
 
   validates :podcast_id, :guid, presence: true
   validates :title, presence: true
-  validates :description, bytesize: {maximum: 4000}, if: -> { strict_validations && description_changed? }
+  validates :description, bytesize: {maximum: MAX_DESCRIPTION_BYTES}, if: -> { strict_validations && description_changed? }
   validates :url, http_url: true
   validates :original_guid, presence: true, uniqueness: {scope: :podcast_id}, allow_nil: true
   alias_error_messages :item_guid, :original_guid
@@ -309,8 +310,13 @@ def sanitize_text
     self.original_guid = original_guid.strip if !original_guid.blank? && original_guid_changed?
   end
 
+  # This value is safe to use in the RSS and integrations
   def description_with_default
-    description || subtitle || title || ""
+    [description, subtitle, title].detect { |d| d.present? } || ""
+  end
+
+  def description_safe
+    description_with_default.truncate_bytes(MAX_DESCRIPTION_BYTES, omission: "")
   end
 
   def feeder_cdn_host

app/models/feed.rb

@@ -54,6 +54,7 @@ class Feed < ApplicationRecord
   validates :enclosure_prefix, http_url: true
   validates :display_episodes_count, numericality: {only_integer: true, greater_than: 0}, allow_nil: true
   validates :display_full_episodes_count, numericality: {only_integer: true, greater_than: 0}, allow_nil: true
+  validates :description, bytesize: {maximum: Episode::MAX_DESCRIPTION_BYTES}
 
   after_initialize :set_defaults
   before_validation :sanitize_text

app/models/feeds/apple_subscription.rb

@@ -7,6 +7,8 @@ class Feeds::AppleSubscription < Feed
 
   after_initialize :set_defaults
 
+  after_create :publish_feeds
+
   has_one :apple_config, class_name: "::Apple::Config", dependent: :destroy, autosave: true, validate: true, inverse_of: :feed
 
   accepts_nested_attributes_for :apple_config, allow_destroy: true, reject_if: :all_blank
@@ -31,6 +33,10 @@ def self.model_name
     Feed.model_name
   end
 
+  def publish_feeds
+    podcast&.publish!
+  end
+
   def unchanged_defaults
     return unless persisted?
 

app/models/podcast.rb

@@ -73,6 +73,10 @@ def apple_config
     end
   end
 
+  def has_apple_feed?
+    feeds.apple.exists?
+  end
+
   def reload(options = nil)
     remove_instance_variable(:@apple_config) if defined?(@apple_config)
     super

app/views/podcasts/show.rss.builder

@@ -16,11 +16,7 @@ xml.rss "xmlns:atom" => "http://www.w3.org/2005/Atom",
     xml.copyright @podcast.copyright unless @podcast.copyright.blank?
     xml.webMaster @podcast.web_master unless @podcast.web_master.blank?
 
-    if @feed.description.present?
-      xml.description { xml.cdata!(@feed.description) }
-    elsif @podcast.description.present?
-      xml.description { xml.cdata!(@podcast.description) }
-    end
+    xml.description { xml.cdata!(feed_description(@feed, @podcast)) }
 
     xml.managingEditor @podcast.managing_editor unless @podcast.managing_editor.blank?
 
@@ -112,7 +108,7 @@ 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!(ep.description_with_default) }
+        xml.description { xml.cdata!(episode_description(ep)) }
         # 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?
 

test/models/episode_test.rb

@@ -39,6 +39,25 @@
     assert e.valid?
   end
 
+  it "has a safe description for integrations" do
+    e = build_stubbed(:episode, segment_count: 2, published_at: nil, strict_validations: true)
+    e.description = "a" * 4001
+    assert e.description.bytesize == 4001
+    assert e.description_safe.bytesize == 4000
+  end
+
+  it "has a description with fallbacks" do
+    e = build_stubbed(:episode, segment_count: 2, published_at: nil, strict_validations: true)
+    e.title = "title"
+    e.subtitle = nil
+    e.description = ""
+    assert e.description_with_default == "title"
+    e.subtitle = "sub"
+    assert e.description_with_default == "sub"
+    e.description = "desc"
+    assert e.description_with_default == "desc"
+  end
+
   it "validates unique original guids" do
     e1 = create(:episode, original_guid: "original")
     e2 = build(:episode, original_guid: "original", podcast: e1.podcast)