Generate companion check id one time and add missing companion check id on captions (#5575)

* Only generate companion check id one time

* Add missing check id for companion captions

Author: Fijxu

src/invidious/views/components/player.ecr

@@ -1,3 +1,6 @@
+<%
+    invidious_companion_check_id = invidious_companion_encrypt(video.id) if invidious_companion
+%>
 <video style="outline:none;width:100%;background-color:#000" playsinline poster="<%= thumbnail %>"
     id="player" class="on-video_player video-js player-style-<%= params.player_style %>"
     preload="<% if params.preload %>auto<% else %>none<% end %>"
@@ -23,7 +26,7 @@
                 src_url  = "/latest_version?id=#{video.id}&itag=#{fmt["itag"]}"
                 src_url += "&local=true" if params.local
                 src_url = invidious_companion.public_url.to_s + src_url + 
-                            "&check=#{invidious_companion_encrypt(video.id)}" if (invidious_companion)
+                            "&check=#{invidious_companion_check_id}" if (invidious_companion)
 
                 bitrate = fmt["bitrate"]
                 mimetype = HTML.escape(fmt["mimeType"].as_s)
@@ -39,7 +42,7 @@
             <% if params.quality == "dash"
                src_url = "/api/manifest/dash/id/" + video.id + "?local=true&unique_res=1"
                src_url = invidious_companion.public_url.to_s + src_url +
-                            "&check=#{invidious_companion_encrypt(video.id)}" if (invidious_companion)
+                            "&check=#{invidious_companion_check_id}" if (invidious_companion)
             %>
                 <source src="<%= src_url %>" type='application/dash+xml' label="dash">
             <% end %>
@@ -51,7 +54,7 @@
                 src_url  = "/latest_version?id=#{video.id}&itag=#{fmt["itag"]}"
                 src_url += "&local=true" if params.local
                 src_url = invidious_companion.public_url.to_s + src_url +
-                            "&check=#{invidious_companion_encrypt(video.id)}" if (invidious_companion)
+                            "&check=#{invidious_companion_check_id}" if (invidious_companion)
 
                 quality = fmt["quality"]
                 mimetype = HTML.escape(fmt["mimeType"].as_s)
@@ -68,15 +71,17 @@
         <% preferred_captions.each do |caption|
             api_captions_url = "/api/v1/captions/"
             api_captions_url = invidious_companion.public_url.to_s + api_captions_url if (invidious_companion)
+            api_captions_check_id = "&check=#{invidious_companion_check_id}"
         %>
-            <track kind="captions" src="<%= api_captions_url %><%= video.id %>?label=<%= caption.name %>" label="<%= caption.name %>">
+            <track kind="captions" src="<%= api_captions_url %><%= video.id %>?label=<%= caption.name %><%= api_captions_check_id %>" label="<%= caption.name %>">
         <% end %>
 
         <% captions.each do |caption|
             api_captions_url = "/api/v1/captions/"
             api_captions_url = invidious_companion.public_url.to_s + api_captions_url if (invidious_companion)
+            api_captions_check_id = "&check=#{invidious_companion_check_id}"
         %>
-            <track kind="captions" src="<%= api_captions_url %><%= video.id %>?label=<%= caption.name %>" label="<%= caption.name %>">
+            <track kind="captions" src="<%= api_captions_url %><%= video.id %>?label=<%= caption.name %><%= api_captions_check_id %>" label="<%= caption.name %>">
         <% end %>
     <% end %>
 </video>