Show message when YouTube comments are disabled

assets/js/comments.js

@@ -52,7 +52,22 @@ function show_youtube_replies(event) {
     target.setAttribute('data-sub-text', sub_text);
 }
 
+function show_youtube_comments_disabled_message() {
+    var comments = document.getElementById('comments');
+    comments.innerHTML = ' \
+    <div id="youtube-comments-disabled-message" class="h-box v-box"> \
+        <p><b>{message}</b></p> \
+    </div>'.supplant({
+        message: video_data.youtube_comments_disabled_text
+    });
+}
+
 function get_youtube_comments() {
+    if (!video_data.comments_enabled) {
+        show_youtube_comments_disabled_message();
+        return;
+    }
+
     var comments = document.getElementById('comments');
 
     var fallback = comments.innerHTML;

assets/js/watch.js

@@ -182,6 +182,11 @@ addEventListener('load', function (e) {
     if (video_data.plid)
         get_playlist(video_data.plid);
 
+    var first_comments_source = video_data.params.comments[0] || video_data.params.comments[1];
+    if (!video_data.comments_enabled && first_comments_source === 'youtube') {
+        return;
+    }
+
     if (video_data.params.comments[0] === 'youtube') {
         get_youtube_comments();
     } else if (video_data.params.comments[0] === 'reddit') {

locales/en-US.json

@@ -220,6 +220,7 @@
     "View Reddit comments": "View Reddit comments",
     "Hide replies": "Hide replies",
     "Show replies": "Show replies",
+    "youtube_comments_disabled_text": "Comments are turned off on this video.",
     "Incorrect password": "Incorrect password",
     "Wrong answer": "Wrong answer",
     "Erroneous CAPTCHA": "Erroneous CAPTCHA",

spec/invidious/videos/regular_videos_extract_spec.cr

@@ -40,6 +40,7 @@ Spectator.describe "parse_video_info" do
     expect(info["keywords"].as_a).to be_empty
 
     expect(info["allowRatings"].as_bool).to be_true
+    expect(info["commentsEnabled"].as_bool).to be_true
     expect(info["isFamilyFriendly"].as_bool).to be_true
     expect(info["isListed"].as_bool).to be_true
     expect(info["isUpcoming"].as_bool).to be_false
@@ -125,6 +126,7 @@ Spectator.describe "parse_video_info" do
     ).in_any_order
 
     expect(info["allowRatings"].as_bool).to be_true
+    expect(info["commentsEnabled"].as_bool).to be_true
     expect(info["isFamilyFriendly"].as_bool).to be_true
     expect(info["isListed"].as_bool).to be_true
     expect(info["isUpcoming"].as_bool).to be_false
@@ -163,4 +165,23 @@ Spectator.describe "parse_video_info" do
     expect(info["authorVerified"].as_bool).to be_false
     expect(info["subCountText"].as_s).to eq("3.11K")
   end
+
+  it "detects disabled YouTube comments" do
+    _player = load_mock("video/regular_no-description.player")
+    _next = load_mock("video/regular_no-description.next")
+
+    raw_data = _player.merge!(_next)
+    comments_section = raw_data.dig(
+      "contents", "twoColumnWatchNextResults",
+      "results", "results", "contents"
+    ).as_a[3]["itemSectionRenderer"].as_h
+
+    comments_section["contents"] = JSON.parse(%([
+      {"messageRenderer":{"text":{"simpleText":"Comments are turned off."}}}
+    ]))
+
+    info = parse_video_info("iuevw6218F0", raw_data)
+
+    expect(info["commentsEnabled"].as_bool).to be_false
+  end
 end

src/invidious/routes/watch.cr

@@ -84,7 +84,9 @@ module Invidious::Routes::Watch
           source = preferences.comments[1]
         end
 
-        if source == "youtube"
+        if source == "youtube" && !video.comments_enabled?
+          comment_html = ""
+        elsif source == "youtube"
           begin
             comment_html = JSON.parse(Comments.fetch_youtube(id, nil, "html", locale, preferences.thin_mode, region))["contentHtml"]
           rescue ex
@@ -110,7 +112,9 @@ module Invidious::Routes::Watch
           end
         end
       else
-        comment_html = JSON.parse(Comments.fetch_youtube(id, nil, "html", locale, preferences.thin_mode, region))["contentHtml"]
+        if video.comments_enabled?
+          comment_html = JSON.parse(Comments.fetch_youtube(id, nil, "html", locale, preferences.thin_mode, region))["contentHtml"]
+        end
       end
 
       comment_html ||= ""

src/invidious/videos.cr

@@ -15,7 +15,7 @@ struct Video
   # NOTE: don't forget to bump this number if any change is made to
   # the `params` structure in videos/parser.cr!!!
   #
-  SCHEMA_VERSION = 3
+  SCHEMA_VERSION = 4
 
   property id : String
 
@@ -192,6 +192,10 @@ struct Video
     }
   end
 
+  def comments_enabled? : Bool
+    info["commentsEnabled"]?.try &.as_bool || true
+  end
+
   # Macros defining getters/setters for various types of data
 
   private macro getset_string(name)

src/invidious/videos/parser.cr

@@ -52,6 +52,18 @@ def parse_related_video(related : JSON::Any) : Hash(String, JSON::Any)?
   }
 end
 
+private def detect_comments_enabled(primary_results : JSON::Any?) : Bool
+  primary_results.try &.as_a.each do |section|
+    item_section = section["itemSectionRenderer"]?
+    next if !item_section
+    next if item_section["sectionIdentifier"]?.try &.as_s != "comment-item-section"
+
+    return false if item_section["contents"]?.try &.as_a.any?(&.["messageRenderer"]?)
+  end
+
+  return true
+end
+
 def extract_video_info(video_id : String)
   # Fetch data from the player endpoint
   player_response = YoutubeAPI.player(video_id: video_id)
@@ -160,7 +172,9 @@ def parse_video_info(video_id : String, player_response : Hash(String, JSON::Any
 
   # Primary results are not available on Music videos
   # See: https://github.com/iv-org/invidious/pull/3238#issuecomment-1207193725
-  if primary_results = main_results.dig?("results", "results", "contents")
+  primary_results = main_results.dig?("results", "results", "contents")
+
+  if primary_results
     video_primary_renderer = primary_results
       .as_a.find(&.["videoPrimaryInfoRenderer"]?)
       .try &.["videoPrimaryInfoRenderer"]
@@ -231,6 +245,8 @@ def parse_video_info(video_id : String, player_response : Hash(String, JSON::Any
   keywords = video_details["keywords"]?
     .try &.as_a.map &.as_s || [] of String
 
+  comments_enabled = detect_comments_enabled(primary_results)
+
   # Related videos
 
   LOGGER.debug("extract_video_info: parsing related videos...")
@@ -418,6 +434,7 @@ def parse_video_info(video_id : String, player_response : Hash(String, JSON::Any
     "isFamilyFriendly" => JSON::Any.new(family_friendly || false),
     "isListed"         => JSON::Any.new(is_listed || false),
     "isUpcoming"       => JSON::Any.new(is_upcoming || false),
+    "commentsEnabled"  => JSON::Any.new(comments_enabled),
     "keywords"         => JSON::Any.new(keywords.map { |v| JSON::Any.new(v) }),
     "isPostLiveDvr"    => JSON::Any.new(post_live_dvr),
     # Related videos

src/invidious/views/watch.ecr

@@ -57,12 +57,14 @@ we're going to need to do it here in order to allow for translations.
     "reddit_comments_text" => HTML.escape(I18n.translate(locale, "View Reddit comments")),
     "reddit_permalink_text" => HTML.escape(I18n.translate(locale, "View more comments on Reddit")),
     "comments_text" => HTML.escape(I18n.translate(locale, "View `x` comments", "{commentCount}")),
+    "youtube_comments_disabled_text" => HTML.escape(I18n.translate(locale, "youtube_comments_disabled_text")),
     "hide_replies_text" => HTML.escape(I18n.translate(locale, "Hide replies")),
     "show_replies_text" => HTML.escape(I18n.translate(locale, "Show replies")),
     "params" => params,
     "preferences" => preferences,
     "premiere_timestamp" => video.premiere_timestamp.try &.to_unix,
     "vr" => video.vr?,
+    "comments_enabled" => video.comments_enabled?,
     "projection_type" => video.projection_type,
     "local_disabled" => CONFIG.disabled?("local"),
     "support_reddit" => true,
@@ -288,8 +290,14 @@ we're going to need to do it here in order to allow for translations.
             <hr>
 
             <% end %>
+            <% first_comments_source = params.comments[0]? || "" %>
+            <% first_comments_source = params.comments[1]? || "" if first_comments_source.empty? %>
             <div id="comments" class="comments">
-                <% if nojs %>
+                <% if !video.comments_enabled? && first_comments_source == "youtube" %>
+                    <div id="youtube-comments-disabled-message" class="h-box v-box">
+                        <p><b><%= I18n.translate(locale, "youtube_comments_disabled_text") %></b></p>
+                    </div>
+                <% elsif nojs %>
                     <%= comment_html %>
                 <% else %>
                     <noscript>