Refactor fetching of remote resources (#11251)

app/services/resolve_url_service.rb

@@ -4,64 +4,49 @@ class ResolveURLService < BaseService
   include JsonLdHelper
   include Authorization
 
-  attr_reader :url
-
   def call(url, on_behalf_of: nil)
-    @url = url
+    @url          = url
     @on_behalf_of = on_behalf_of
 
-    return process_local_url if local_url?
-
-    process_url unless fetched_atom_feed.nil?
+    if local_url?
+      process_local_url
+    elsif !fetched_resource.nil?
+      process_url
+    end
   end
 
   private
 
   def process_url
     if equals_or_includes_any?(type, ActivityPub::FetchRemoteAccountService::SUPPORTED_TYPES)
-      FetchRemoteAccountService.new.call(atom_url, body, protocol)
+      FetchRemoteAccountService.new.call(resource_url, body, protocol)
     elsif equals_or_includes_any?(type, ActivityPub::Activity::Create::SUPPORTED_TYPES + ActivityPub::Activity::Create::CONVERTED_TYPES)
-      FetchRemoteStatusService.new.call(atom_url, body, protocol)
+      FetchRemoteStatusService.new.call(resource_url, body, protocol)
     end
   end
 
-  def fetched_atom_feed
-    @_fetched_atom_feed ||= FetchAtomService.new.call(url)
+  def fetched_resource
+    @fetched_resource ||= FetchResourceService.new.call(@url)
   end
 
-  def atom_url
-    fetched_atom_feed.first
+  def resource_url
+    fetched_resource.first
   end
 
   def body
-    fetched_atom_feed.second[:prefetched_body]
+    fetched_resource.second[:prefetched_body]
   end
 
   def protocol
-    fetched_atom_feed.third
+    fetched_resource.third
   end
 
   def type
     return json_data['type'] if protocol == :activitypub
-
-    case xml_root
-    when 'feed'
-      'Person'
-    when 'entry'
-      'Note'
-    end
   end
 
   def json_data
-    @_json_data ||= body_to_json(body)
-  end
-
-  def xml_root
-    xml_data.root.name
-  end
-
-  def xml_data
-    @_xml_data ||= Nokogiri::XML(body, nil, 'utf-8')
+    @json_data ||= body_to_json(body)
   end
 
   def local_url?
@@ -83,10 +68,10 @@ class ResolveURLService < BaseService
 
   def check_local_status(status)
     return if status.nil?
+
     authorize_with @on_behalf_of, status, :show?
     status
   rescue Mastodon::NotPermittedError
-    # Do not disclose the existence of status the user is not authorized to see
     nil
   end
 end