hide ugoira preview/video link if it hasn't finished processing

app/logical/pixiv_ugoira_service.rb

@@ -23,7 +23,7 @@ class PixivUgoiraService
   def generate_resizes(source_path, output_path, preview_path, delay = true)
     # Run this a bit in the future to give the upload process time to move the file
     if delay
-      PixivUgoiraConverter.delay(:queue => Socket.gethostname, :run_at => 2.seconds.from_now).convert(source_path, output_path, preview_path, @frame_data)
+      PixivUgoiraConverter.delay(:queue => Socket.gethostname, :run_at => 2.seconds.from_now, :priority => -1).convert(source_path, output_path, preview_path, @frame_data)
     else
       PixivUgoiraConverter.convert(source_path, output_path, preview_path, @frame_data)
     end

app/models/post.rb

@@ -152,6 +152,10 @@ class Post < ActiveRecord::Base
     def has_dimensions?
       image_width.present? && image_height.present?
     end
+
+    def has_ugoira_webm?
+      created_at < 1.minute.ago || File.exists?(preview_file_path) 
+    end
   end
 
   module ImageMethods

app/presenters/post_presenter.rb

@@ -10,6 +10,11 @@ class PostPresenter < Presenter
       return ""
     end
 
+    if post.is_ugoira? && !post.has_ugoira_webm?
+      # ugoira preview gen is async so dont render it immediately
+      return ""
+    end
+
     path = options[:path_prefix] || "/posts"
 
     html =  %{<article id="post_#{post.id}" class="#{preview_class(post, options[:pool])}" #{data_attributes(post)}>}

app/views/posts/partials/show/_ugoira.html.erb

@@ -28,7 +28,13 @@
     <p id="ugoira-load-progress">Loaded <span id="ugoira-load-percentage">0</span>%</p>
     <div id="seek-slider" style="display: none; width: <%= @post.image_width - 81 %>px;"></div>
   </div>
-  <p id="save-video-link"><%= link_to "Save as video (right click and save)", post.large_file_url %></p>
+  <p id="save-video-link">
+    <% if post.has_ugoira_webm? %>
+      <%= link_to "Save as video (right click and save)", post.large_file_url %>
+    <% else %>
+      WebM conversion pending
+    <% end %>
+  </p>
 </div>
 
 <% content_for(:html_header) do %>