Add YouTube comments

src/invidious.cr

@@ -504,7 +504,7 @@ get "/api/v1/comments/:id" do |env|
   source ||= "youtube"
 
   format = env.params.query["format"]?
-  format ||= "html"
+  format ||= "json"
 
   if source == "youtube"
     client = make_client(YT_URL)
@@ -627,13 +627,20 @@ get "/api/v1/comments/:id" do |env|
     end
 
     env.response.content_type = "application/json"
-    next comments
+    if format == "json"
+      next comments
+    else
+      comments = JSON.parse(comments)
+      content_html = template_youtube_comments(comments)
+
+      {"content_html" => content_html}.to_json
+    end
   elsif source == "reddit"
     client = make_client(REDDIT_URL)
     headers = HTTP::Headers{"User-Agent" => "web:invidio.us:v0.1.0 (by /u/omarroth)"}
     begin
       comments, reddit_thread = get_reddit_comments(id, client, headers)
-      content_html = template_comments(comments)
+      content_html = template_reddit_comments(comments)
 
       content_html = fill_links(content_html, "https", "www.reddit.com")
       content_html = add_alt_links(content_html)
@@ -1664,6 +1671,9 @@ post "/preferences" do |env|
     volume = env.params.body["volume"]?.try &.as(String).to_i
     volume ||= 100
 
+    comments = env.params.body["comments"]?
+    comments ||= "youtube"
+
     dark_mode = env.params.body["dark_mode"]?.try &.as(String)
     dark_mode ||= "off"
     dark_mode = dark_mode == "on"
@@ -1688,6 +1698,7 @@ post "/preferences" do |env|
       "speed"       => speed,
       "quality"     => quality,
       "volume"      => volume,
+      "comments"    => comments,
       "dark_mode"   => dark_mode,
       "thin_mode"   => thin_mode,
       "max_results" => max_results,

src/invidious/helpers.cr

@@ -23,6 +23,7 @@ DEFAULT_USER_PREFERENCES = Preferences.from_json({
   "speed"       => 1.0,
   "quality"     => "hd720",
   "volume"      => 100,
+  "comments"    => "youtube",
   "dark_mode"   => false,
   "thin_mode "  => false,
   "max_results" => 40,
@@ -157,8 +158,13 @@ class Preferences
     speed:      Float32,
     quality:    String,
     volume:     Int32,
-    dark_mode:  Bool,
-    thin_mode:  {
+    comments:   {
+      type:    String,
+      nilable: true,
+      default: "youtube",
+    },
+    dark_mode: Bool,
+    thin_mode: {
       type:    Bool,
       nilable: true,
       default: false,
@@ -500,7 +506,56 @@ def get_reddit_comments(id, client, headers)
   return comments, thread
 end
 
-def template_comments(root)
+def template_youtube_comments(comments)
+  html = ""
+
+  root = comments["comments"].as_a
+  root.each do |child|
+    if child["replies"]?
+      replies_html = <<-END_HTML
+      <div id="replies" class="pure-g">
+      <div class="pure-u-md-1-24"></div>
+      <div class="pure-u-md-23-24">
+        <p>
+          <a href="javascript:void(0)" data-continuation="#{child["replies"]["continuation"]}"
+            onclick="load_comments(this)">View #{child["replies"]["replyCount"]} replies</a>
+        </p>
+      </div>
+      END_HTML
+    end
+
+    html += <<-END_HTML
+    <div class="pure-g">
+      <div class="pure-u-1">
+        <p>
+          <a href="javascript:void(0)" onclick="toggle(this)">[ - ]</a> #{child["likeCount"]} <b>#{child["author"]}</b>
+        </p>
+        <div>
+        #{child["content"]}
+        #{replies_html}
+        </div>
+      </div>
+    </div>
+    END_HTML
+  end
+
+  if comments["continuation"]?
+    html += <<-END_HTML
+    <div class="pure-g">
+      <div class="pure-u-1">
+        <p>
+          <a href="javascript:void(0)" data-continuation="#{comments["continuation"]}"
+            onclick="load_comments(this)">Load more</a>
+        </p>
+      </div>
+    </div>
+    END_HTML
+  end
+
+  return html
+end
+
+def template_reddit_comments(root)
   html = ""
   root.each do |child|
     if child.data.is_a?(RedditComment)
@@ -512,7 +567,7 @@ def template_comments(root)
       replies_html = ""
       if child.replies.is_a?(RedditThing)
         replies = child.replies.as(RedditThing)
-        replies_html = template_comments(replies.data.as(RedditListing).children)
+        replies_html = template_reddit_comments(replies.data.as(RedditListing).children)
       end
 
       content = <<-END_HTML

src/invidious/views/preferences.ecr

@@ -47,6 +47,15 @@ function update_value(element) {
                 <span class="pure-form-message-inline" id="volume-value"><%= user.preferences.volume %></span>
             </div>
 
+            <div class="pure-control-group">
+                <label for="comments">Pull comments from: </label>
+                <select name="comments" id="comments">
+                <% ["youtube", "reddit"].each do |option| %>
+                    <option <% if user.preferences.comments == option %> selected <% end %>><%= option %></option>
+                <% end %>
+                </select>
+            </div>
+
             <legend>Visual preferences</legend>
             <div class="pure-control-group">
                 <label for="dark_mode">Dark mode: </label>

src/invidious/views/watch.ecr

@@ -124,28 +124,6 @@ player.offset({
   end: <%= video_end %>
 });
 
-function toggle(target) {
-    body = target.parentNode.parentNode.children[1];
-    if (body.style.display === null || body.style.display === '') {
-        target.innerHTML = '[ + ]';
-        body.style.display = 'none';
-    } else {
-        target.innerHTML = '[ - ]';
-        body.style.display = '';
-    }
-};
-
-function toggle_comments(target) {
-    body = target.parentNode.parentNode.parentNode.children[1];
-    if (body.style.display === null || body.style.display === '') {
-        target.innerHTML = '[ + ]';
-        body.style.display = 'none';
-    } else {
-        target.innerHTML = '[ - ]';
-        body.style.display = '';
-    }
-};
-
 <% if !listen %>
 var currentSources = player.currentSources();
 for ( var i = 0; i < currentSources.length; i++ ) {
@@ -158,12 +136,74 @@ for ( var i = 0; i < currentSources.length; i++ ) {
 player.src(currentSources);
 <% end %>
 
-fetch("/api/v1/comments/<%= video.id %>?source=reddit")
+function toggle(target) {
+  body = target.parentNode.parentNode.children[1];
+  if (body.style.display === null || body.style.display === "") {
+    target.innerHTML = "[ + ]";
+    body.style.display = "none";
+  } else {
+    target.innerHTML = "[ - ]";
+    body.style.display = "";
+  }
+}
+
+function toggle_comments(target) {
+  body = target.parentNode.parentNode.parentNode.children[1];
+  if (body.style.display === null || body.style.display === "") {
+    target.innerHTML = "[ + ]";
+    body.style.display = "none";
+  } else {
+    target.innerHTML = "[ - ]";
+    body.style.display = "";
+  }
+}
+
+function timeout(ms, promise) {
+  return new Promise(function(resolve, reject) {
+    setTimeout(function() {
+      reject(new Error("timeout"));
+    }, ms);
+    promise.then(resolve, reject);
+  });
+}
+
+function load_comments(target) {
+  var continuation = target.getAttribute("data-continuation");
+
+  var body = target.parentNode.parentNode;
+  var fallback = body.innerHTML;
+  body.innerHTML =
+    '<h3><center><i class="loading fas fa-spinner"></i></center></h3>';
+
+  var url =
+    "/api/v1/comments/<%= video.id %>?format=html&continuation=" + continuation;
+  timeout(5000, fetch(url))
     .then(function(response) {
-        return response.json();
+      return response.json();
     })
-    .then(function(jsonResponse) {
-        comments = document.getElementById('comments');
+    .then(
+      function(jsonResponse) {
+        body.innerHTML = jsonResponse.content_html;
+      },
+      function(error) {
+        body.innerHTML = fallback;
+        console.log(response);
+      }
+    )
+    .catch(function(error) {
+      body.innerHTML = fallback;
+      console.log(error);
+    });
+}
+
+function get_reddit_comments() {
+  fetch("/api/v1/comments/<%= video.id %>?source=reddit")
+    .then(function(response) {
+      return response.json();
+    })
+    .then(
+      function(jsonResponse) {
+        comments = document.getElementById("comments");
         comments.innerHTML = `
         <div>
             <h3>
@@ -175,25 +215,52 @@ fetch("/api/v1/comments/<%= video.id %>?source=reddit")
             </b>
         </div>
         <div>{content_html}</div>
-    </div>
-    <hr style="margin-left:1em; margin-right:1em;">`.supplant({
-        title: jsonResponse.title,
-        permalink: jsonResponse.permalink,
-        content_html: jsonResponse.content_html
-        })
-    }, function(response){
-        comments.innerHTML = "";
-    });
 
-String.prototype.supplant = function (o) {
-    return this.replace(/{([^{}]*)}/g,
-        function (a, b) {
-            var r = o[b];
-            return typeof r === 'string' || typeof r === 'number' ? r : a;
-        }
+        <hr style="margin-left:1em; margin-right:1em;">`.supplant({
+          title: jsonResponse.title,
+          permalink: jsonResponse.permalink,
+          content_html: jsonResponse.content_html
+        });
+      },
+      function(response) {
+        get_youtube_comments();
+      }
     );
+}
+
+function get_youtube_comments() {
+  fetch("/api/v1/comments/<%= video.id %>?format=html")
+    .then(function(response) {
+      return response.json();
+    })
+    .then(
+      function(jsonResponse) {
+        comments = document.getElementById("comments");
+        comments.innerHTML = `
+        <div>{content_html}</div>
+        <hr style="margin-left:1em; margin-right:1em;">`.supplant({
+          content_html: jsonResponse.content_html
+        });
+      },
+      function(response) {
+        comments.innerHTML = "";
+      }
+    );
+}
+
+String.prototype.supplant = function(o) {
+  return this.replace(/{([^{}]*)}/g, function(a, b) {
+    var r = o[b];
+    return typeof r === "string" || typeof r === "number" ? r : a;
+  });
 };
 
+<% if preferences && preferences.comments == "reddit" %>
+get_reddit_comments();
+<% else %>
+get_youtube_comments();
+<% end %>
+
 </script>
 
 <div class="h-box">