posts: use 180x180 thumbnails in place of 150x150 thumbnails.

For small thumbnails, use 180x180 thumbnails scaled down to 150x150.
This is so we can get rid of 150x150 images and just use 180x180 for
both small and medium size thumbnails.

Also fix RSS feeds, XML sitemaps, and Discord embeds to use 360x360
thumbnails instead of 150x150 thumbnails.

app/components/post_preview_component.rb

@@ -56,9 +56,7 @@ class PostPreviewComponent < ApplicationComponent
 
   def variant
     case size
-    when "150"
-      media_asset.variant("preview")
-    when "180"
+    when "150", "180"
       media_asset.variant("180x180")
     when "225", "225w"
       media_asset.variant("360x360")

app/components/post_preview_component/post_preview_component.html.erb

@@ -17,9 +17,7 @@
       <picture>
         <% unless save_data %>
           <% case size %>
-          <% when "150" %>
-            <%# no-op %>
-          <% when "180" %>
+          <% when "150", "180" %>
             <%= tag.source type: "image/jpeg", srcset: "#{media_asset.variant("180x180").file_url} 1x, #{media_asset.variant("360x360").file_url} 2x" %>
           <% else # 225 to 360 %>
             <%= tag.source type: "image/webp", srcset: "#{media_asset.variant("360x360").file_url} 1x, #{media_asset.variant("720x720").file_url} 2x" %>

app/controllers/comments_controller.rb

@@ -93,7 +93,7 @@ class CommentsController < ApplicationController
     @comments = Comment.paginated_search(params)
 
     if request.format.atom?
-      @comments = @comments.includes(:creator, :post)
+      @comments = @comments.includes(:creator, post: [:media_asset])
       @comments = @comments.select { |comment| comment.post.visible? }
     elsif request.format.html?
       @comments = @comments.includes(:creator, :updater, post: [:uploader, :media_asset])

app/helpers/seo_helper.rb

@@ -20,7 +20,7 @@ module SeoHelper
       name: page_title,
       description: meta_description,
       uploadDate: post.created_at.iso8601,
-      thumbnailUrl: post.preview_file_url,
+      thumbnailUrl: post.media_asset.variant("360x360").file_url,
       contentUrl: post.file_url,
     })
   end

app/logical/discord_slash_command/post_embed.rb

@@ -26,9 +26,9 @@ class DiscordSlashCommand
       if is_censored?
         nil
       elsif post.file_ext.match?(/jpe?g|png|gif/)
-        post.file_url
+        post.media_asset.variant("original").file_url
       else
-        post.preview_file_url
+        post.media_asset.variant("360x360").file_url
       end
     end
 

app/views/comments/index.atom.builder

@@ -11,7 +11,7 @@ atom_feed(root_url: comments_url(host: Danbooru.config.hostname)) do |feed|
     feed.entry(comment, published: comment.created_at, updated: comment.updated_at) do |entry|
       entry.title("@#{comment.creator.name} on post ##{comment.post_id} (#{comment.post.presenter.humanized_essential_tag_string})")
       entry.content(<<-EOS.strip_heredoc, type: "html")
-        <img src="#{comment.post.preview_file_url}"/>
+        <img src="#{comment.post.media_asset.variant("360x360").file_url}"/>
 
         #{format_text(comment.body)}
       EOS

app/views/posts/index.atom.erb

@@ -23,7 +23,7 @@
       <content type="xhtml">
         <div xmlns="http://www.w3.org/1999/xhtml">
           <%= link_to post_url(post) do %>
-            <%= image_tag post.preview_file_url %>
+            <%= image_tag post.media_asset.variant("360x360").file_url %>
           <% end %>
           <p><%= post.tag_string %></p>
         </div>

app/views/posts/index.sitemap.erb

@@ -12,12 +12,12 @@
       <% if post.visible? %>
         <% if post.is_image? %>
           <image:image>
-            <image:loc><%= post.file_url %></image:loc>
+            <image:loc><%= post.media_asset.variant("original").file_url %></image:loc>
           </image:image>
         <% elsif post.is_video? %>
           <video:video>
-            <video:thumbnail_loc><%= post.preview_file_url %></video:thumbnail_loc>
-            <video:content_loc><%= post.file_url %></video:content_loc>
+            <video:thumbnail_loc><%= post.media_asset.variant("360x360").file_url %></video:thumbnail_loc>
+            <video:content_loc><%= post.media_asset.variant("original").file_url %></video:content_loc>
             <video:publication_date><%= post.created_at.iso8601 %></video:publication_date>
             <video:title><%= "Post ##{post.id}" %></video:title>
             <video:description><%= post.tag_string %></video:description>