Fix quote is not set in noteserializer

app/helpers/context_helper.rb

@@ -29,6 +29,7 @@ module ContextHelper
     limited_scope: { 'kmyblue' => 'http://kmy.blue/ns#', 'limitedScope' => { '@id' => 'kmyblue:limitedScope', '@type' => '@id' } },
     other_setting: { 'fedibird' => 'http://fedibird.com/ns#', 'otherSetting' => 'fedibird:otherSetting' },
     references: { 'fedibird' => 'http://fedibird.com/ns#', 'references' => { '@id' => 'fedibird:references', '@type' => '@id' } },
+    quote_uri: { 'fedibird' => 'http://fedibird.com/ns#', 'quoteUri' => 'fedibird:quoteUri' },
     olm: {
       'toot' => 'http://joinmastodon.org/ns#', 'Device' => 'toot:Device', 'Ed25519Signature' => 'toot:Ed25519Signature', 'Ed25519Key' => 'toot:Ed25519Key', 'Curve25519Key' => 'toot:Curve25519Key', 'EncryptedMessage' => 'toot:EncryptedMessage', 'publicKeyBase64' => 'toot:publicKeyBase64', 'deviceId' => 'toot:deviceId',
       'claim' => { '@type' => '@id', '@id' => 'toot:claim' },

app/lib/activitypub/case_transform.rb

@@ -2,6 +2,11 @@
 
 module ActivityPub::CaseTransform
   class << self
+    NO_CONVERT_VALUES = %w(
+      _misskey_content
+      _misskey_quote
+    ).freeze
+
     def camel_lower_cache
       @camel_lower_cache ||= {}
     end
@@ -12,7 +17,9 @@ module ActivityPub::CaseTransform
       when Hash then value.deep_transform_keys! { |key| camel_lower(key) }
       when Symbol then camel_lower(value.to_s).to_sym
       when String
-        camel_lower_cache[value] ||= if value.start_with?('_:')
+        camel_lower_cache[value] ||= if NO_CONVERT_VALUES.include?(value)
+                                       value
+                                     elsif value.start_with?('_:')
                                        "_:#{value.delete_prefix('_:').underscore.camelize(:lower)}"
                                      else
                                        value.underscore.camelize(:lower)

app/serializers/activitypub/note_serializer.rb

@@ -3,7 +3,7 @@
 class ActivityPub::NoteSerializer < ActivityPub::Serializer
   include FormattingHelper
 
-  context_extensions :atom_uri, :conversation, :sensitive, :voters_count, :searchable_by, :references, :limited_scope
+  context_extensions :atom_uri, :conversation, :sensitive, :voters_count, :searchable_by, :references, :limited_scope, :quote_uri
 
   attributes :id, :type, :summary,
              :in_reply_to, :published, :url,
@@ -165,7 +165,7 @@ class ActivityPub::NoteSerializer < ActivityPub::Serializer
   end
 
   def quote?
-    object.references.count == 1 && object.account.user&.single_ref_to_quote
+    object.references.count == 1 && object.account.user&.settings&.[]('single_ref_to_quote')
   end
 
   def quote_uri

spec/serializers/activitypub/note_serializer_spec.rb

@@ -13,8 +13,12 @@ describe ActivityPub::NoteSerializer do
   let!(:reply_by_other_first) { Fabricate(:status, account: other, thread: parent, visibility: :public) }
   let!(:reply_by_account_third) { Fabricate(:status, account: account, thread: parent, visibility: :public) }
   let!(:reply_by_account_visibility_direct) { Fabricate(:status, account: account, thread: parent, visibility: :direct) }
+  let!(:referred) { nil }
+  let(:convert_to_quote) { false }
 
   before(:each) do
+    parent.references << referred if referred.present?
+    account.user&.settings&.[]=('single_ref_to_quote', true) if convert_to_quote
     @serialization = ActiveModelSerializers::SerializableResource.new(parent, serializer: described_class, adapter: ActivityPub::Adapter)
   end
 
@@ -41,4 +45,22 @@ describe ActivityPub::NoteSerializer do
   it 'does not include replies with direct visibility in its replies collection' do
     expect(subject['replies']['first']['items']).to_not include(reply_by_account_visibility_direct.uri)
   end
+
+  context 'when has quote but no_convert setting' do
+    let(:referred) { Fabricate(:status) }
+
+    it 'has as reference' do
+      expect(subject['quoteUri']).to be_nil
+    end
+  end
+
+  context 'when has quote and convert setting' do
+    let(:referred) { Fabricate(:status) }
+    let(:convert_to_quote) { true }
+
+    it 'has as quote' do
+      expect(subject['quoteUri']).to_not be_nil
+      expect(subject['_misskey_quote'] == subject['quoteUri']).to be true
+    end
+  end
 end