Parse links in the comments

Co-Authored-By: Samantaz Fox <coding@samantaz.fr>

src/invidious/comments/content.cr

@@ -64,15 +64,15 @@ def content_to_comment_html(content, video_id : String? = "")
     # check for custom emojis
     if run["emoji"]?
       if run["emoji"]["isCustomEmoji"]?.try &.as_bool
-        if emojiImage = run.dig?("emoji", "image")
-          emojiAlt = emojiImage.dig?("accessibility", "accessibilityData", "label").try &.as_s || text
-          emojiThumb = emojiImage["thumbnails"][0]
+        if emoji_image = run.dig?("emoji", "image")
+          emoji_alt = emoji_image.dig?("accessibility", "accessibilityData", "label").try &.as_s || text
+          emoji_thumb = emoji_image["thumbnails"][0]
           text = String.build do |str|
-            str << %(<img alt=") << emojiAlt << "\" "
-            str << %(src="/ggpht) << URI.parse(emojiThumb["url"].as_s).request_target << "\" "
-            str << %(title=") << emojiAlt << "\" "
-            str << %(width=") << emojiThumb["width"] << "\" "
-            str << %(height=") << emojiThumb["height"] << "\" "
+            str << %(<img alt=") << emoji_alt << "\" "
+            str << %(src="/ggpht) << URI.parse(emoji_thumb["url"].as_s).request_target << "\" "
+            str << %(title=") << emoji_alt << "\" "
+            str << %(width=") << emoji_thumb["width"] << "\" "
+            str << %(height=") << emoji_thumb["height"] << "\" "
             str << %(class="channel-emoji" />)
           end
         else

src/invidious/comments/youtube.cr

@@ -144,7 +144,7 @@ module Invidious::Comments
                   toolbar_mutation = mutations.find { |i| i.dig?("entityKey") == toolbar_key }
                   if !comment_mutation.nil? && !toolbar_mutation.nil?
                     # todo parse styleRuns, commandRuns and attachmentRuns for comments
-                    html_content = HTML.escape(comment_mutation.dig("payload", "commentEntityPayload", "properties", "content", "content").as_s)
+                    html_content = parse_description(comment_mutation.dig("payload", "commentEntityPayload", "properties", "content"), id)
                     comment_author = comment_mutation.dig("payload", "commentEntityPayload", "author")
                     json.field "authorId", comment_author["channelId"].as_s
                     json.field "authorUrl", "/channel/#{comment_author["channelId"].as_s}"

src/invidious/videos/description.cr

@@ -7,7 +7,19 @@ private def copy_string(str : String::Builder, iter : Iterator, count : Int) : I
     cp = iter.next
     break if cp.is_a?(Iterator::Stop)
 
-    str << cp.chr
+    if cp == 0x26  # Ampersand (&)
+      str << "&amp;"
+    elsif cp == 0x27  # Single quote (')
+      str << "&#39;"
+    elsif cp == 0x22  # Double quote (")
+      str << "&quot;"
+    elsif cp == 0x3C  # Less-than (<)
+      str << "&lt;"
+    elsif cp == 0x3E  # Greater than (>)
+      str << "&gt;"
+    else
+      str << cp.chr
+    end
 
     # A codepoint from the SMP counts twice
     copied += 1 if cp > 0xFFFF