Assetify favicons and set correct url scheme

app/models/post/image_store/local2.rb

@@ -41,7 +41,7 @@ module Post::ImageStore::Local2
 
   def preview_url
     if status == "deleted"
-      ApplicationController.helpers.image_path 'deleted-preview.png', host: base_url(:assets)
+      ApplicationController.helpers.image_url 'deleted-preview.png'
     elsif image?
       "#{base_url :assets}/data/preview/#{file_hierarchy}/#{md5}.jpg"
     else

config/application.rb

@@ -54,8 +54,9 @@ module Moebooru
     # This one is never reliable because there's no standard controlling this.
     config.action_dispatch.ip_spoofing_check = false
 
-    config.action_controller.asset_host = CONFIG[:file_hosts][:assets] if CONFIG[:file_hosts]
-    config.action_mailer.default_url_options = { :host => CONFIG["server_host"] }
+    scheme = "#{CONFIG['secure'] ? 'https' : 'http'}://"
+    config.action_controller.asset_host = "#{scheme}#{CONFIG[:file_hosts][:assets]}" if CONFIG[:file_hosts]
+    config.action_mailer.default_url_options = { :host => "#{scheme}#{CONFIG["server_host"]}" }
 
     config.ssl_options = { hsts: false }
 

lib/external_post.rb

@@ -4,13 +4,20 @@ class ExternalPost
 
   class << self
     def get_service_icon(service)
-      case service
-      when CONFIG["local_image_service"]
-        "/favicon.ico"
-      when "gelbooru.com" # hack
-        "/favicon-#{service}.png"
+      filename =
+        case service
+        when CONFIG["local_image_service"]
+          nil
+        when "gelbooru.com" # hack
+          "#{service}.png"
+        else
+          "#{service}.ico"
+        end
+
+      if filename.present?
+        ApplicationController.helpers.image_url "favicons/#{filename}"
       else
-        "/favicon-#{service}.ico"
+        "/favicon.ico"
       end
     end
   end