10 files changed, 128 insertions, 12 deletions
diff --git a/app/serializers/activitypub/actor_serializer.rb b/app/serializers/activitypub/actor_serializer.rb
index 622bdde0c..afcd37771 100644
--- a/app/serializers/activitypub/actor_serializer.rb
+++ b/app/serializers/activitypub/actor_serializer.rb
@@ -4,7 +4,7 @@ class ActivityPub::ActorSerializer < ActiveModel::Serializer
   include RoutingHelper
 
   attributes :id, :type, :following, :followers,
-             :inbox, :outbox,
+             :inbox, :outbox, :featured,
              :preferred_username, :name, :summary,
              :url, :manually_approves_followers
 
@@ -53,6 +53,10 @@ class ActivityPub::ActorSerializer < ActiveModel::Serializer
     account_outbox_url(object)
   end
 
+  def featured
+    account_collection_url(object, :featured)
+  end
+
   def endpoints
     object
   end
diff --git a/app/serializers/activitypub/add_serializer.rb b/app/serializers/activitypub/add_serializer.rb
new file mode 100644
index 000000000..c0906e8d0
--- /dev/null
+++ b/app/serializers/activitypub/add_serializer.rb
@@ -0,0 +1,24 @@
+# frozen_string_literal: true
+
+class ActivityPub::AddSerializer < ActiveModel::Serializer
+  include RoutingHelper
+
+  attributes :type, :actor, :target
+  attribute :proper_object, key: :object
+
+  def type
+    'Add'
+  end
+
+  def actor
+    ActivityPub::TagManager.instance.uri_for(object.account)
+  end
+
+  def proper_object
+    ActivityPub::TagManager.instance.uri_for(object)
+  end
+
+  def target
+    account_collection_url(object.account, :featured)
+  end
+end
diff --git a/app/serializers/activitypub/collection_serializer.rb b/app/serializers/activitypub/collection_serializer.rb
index 9832133fc..1ae492945 100644
--- a/app/serializers/activitypub/collection_serializer.rb
+++ b/app/serializers/activitypub/collection_serializer.rb
@@ -2,7 +2,7 @@
 
 class ActivityPub::CollectionSerializer < ActiveModel::Serializer
   def self.serializer_for(model, options)
-    return ActivityPub::ActivitySerializer if model.class.name == 'Status'
+    return ActivityPub::NoteSerializer if model.class.name == 'Status'
     return ActivityPub::CollectionSerializer if model.class.name == 'ActivityPub::CollectionPresenter'
     super
   end
@@ -13,8 +13,8 @@ class ActivityPub::CollectionSerializer < ActiveModel::Serializer
   attribute :part_of, if: -> { object.part_of.present? }
 
   has_one :first, if: -> { object.first.present? }
-  has_many :items, key: :items, if: -> { (object.items.present? || page?) && !ordered? }
-  has_many :items, key: :ordered_items, if: -> { (object.items.present? || page?) && ordered? }
+  has_many :items, key: :items, if: -> { (!object.items.nil? || page?) && !ordered? }
+  has_many :items, key: :ordered_items, if: -> { (!object.items.nil? || page?) && ordered? }
 
   def type
     if page?
diff --git a/app/serializers/activitypub/flag_serializer.rb b/app/serializers/activitypub/flag_serializer.rb
new file mode 100644
index 000000000..53e8f726d
--- /dev/null
+++ b/app/serializers/activitypub/flag_serializer.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+class ActivityPub::FlagSerializer < ActiveModel::Serializer
+  attributes :id, :type, :actor, :content
+  attribute :virtual_object, key: :object
+
+  def id
+    # This is nil for now
+    ActivityPub::TagManager.instance.uri_for(object)
+  end
+
+  def type
+    'Flag'
+  end
+
+  def actor
+    ActivityPub::TagManager.instance.uri_for(instance_options[:account] || object.account)
+  end
+
+  def virtual_object
+    [ActivityPub::TagManager.instance.uri_for(object.target_account)] + object.statuses.map { |s| ActivityPub::TagManager.instance.uri_for(s) }
+  end
+
+  def content
+    object.comment
+  end
+end
diff --git a/app/serializers/activitypub/image_serializer.rb b/app/serializers/activitypub/image_serializer.rb
index a015c6b1b..3c08f77e8 100644
--- a/app/serializers/activitypub/image_serializer.rb
+++ b/app/serializers/activitypub/image_serializer.rb
@@ -4,6 +4,7 @@ class ActivityPub::ImageSerializer < ActiveModel::Serializer
   include RoutingHelper
 
   attributes :type, :media_type, :url
+  attribute :focal_point, if: :focal_point?
 
   def type
     'Image'
@@ -16,4 +17,12 @@ class ActivityPub::ImageSerializer < ActiveModel::Serializer
   def media_type
     object.content_type
   end
+
+  def focal_point?
+    object.respond_to?(:meta) && object.meta.is_a?(Hash) && object.meta['focus'].is_a?(Hash)
+  end
+
+  def focal_point
+    [object.meta['focus']['x'], object.meta['focus']['y']]
+  end
 end
diff --git a/app/serializers/activitypub/note_serializer.rb b/app/serializers/activitypub/note_serializer.rb
index 24c39f3c9..d0e6290c1 100644
--- a/app/serializers/activitypub/note_serializer.rb
+++ b/app/serializers/activitypub/note_serializer.rb
@@ -90,6 +90,7 @@ class ActivityPub::NoteSerializer < ActiveModel::Serializer
     include RoutingHelper
 
     attributes :type, :media_type, :url, :name
+    attribute :focal_point, if: :focal_point?
 
     def type
       'Document'
@@ -106,6 +107,14 @@ class ActivityPub::NoteSerializer < ActiveModel::Serializer
     def url
       object.local? ? full_asset_url(object.file.url(:original, false)) : object.remote_url
     end
+
+    def focal_point?
+      object.file.meta.is_a?(Hash) && object.file.meta['focus'].is_a?(Hash)
+    end
+
+    def focal_point
+      [object.file.meta['focus']['x'], object.file.meta['focus']['y']]
+    end
   end
 
   class MentionSerializer < ActiveModel::Serializer
diff --git a/app/serializers/activitypub/outbox_serializer.rb b/app/serializers/activitypub/outbox_serializer.rb
new file mode 100644
index 000000000..48fbad0fd
--- /dev/null
+++ b/app/serializers/activitypub/outbox_serializer.rb
@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+class ActivityPub::OutboxSerializer < ActivityPub::CollectionSerializer
+  def self.serializer_for(model, options)
+    return ActivityPub::ActivitySerializer if model.is_a?(Status)
+    super
+  end
+end
diff --git a/app/serializers/activitypub/remove_serializer.rb b/app/serializers/activitypub/remove_serializer.rb
new file mode 100644
index 000000000..c2a5ae1b3
--- /dev/null
+++ b/app/serializers/activitypub/remove_serializer.rb
@@ -0,0 +1,24 @@
+# frozen_string_literal: true
+
+class ActivityPub::RemoveSerializer < ActiveModel::Serializer
+  include RoutingHelper
+
+  attributes :type, :actor, :target
+  attribute :proper_object, key: :object
+
+  def type
+    'Remove'
+  end
+
+  def actor
+    ActivityPub::TagManager.instance.uri_for(object.account)
+  end
+
+  def proper_object
+    ActivityPub::TagManager.instance.uri_for(object)
+  end
+
+  def target
+    account_collection_url(object.account, :featured)
+  end
+end
diff --git a/app/serializers/initial_state_serializer.rb b/app/serializers/initial_state_serializer.rb
index 904daa804..1d17e2b0a 100644
--- a/app/serializers/initial_state_serializer.rb
+++ b/app/serializers/initial_state_serializer.rb
@@ -22,16 +22,18 @@ class InitialStateSerializer < ActiveModel::Serializer
       locale: I18n.locale,
       domain: Rails.configuration.x.local_domain,
       admin: object.admin&.id&.to_s,
+      search_enabled: Chewy.enabled?,
     }
 
     if object.current_account
-      store[:me]             = object.current_account.id.to_s
-      store[:unfollow_modal] = object.current_account.user.setting_unfollow_modal
-      store[:boost_modal]    = object.current_account.user.setting_boost_modal
-      store[:favourite_modal]  = object.current_account.user.setting_favourite_modal
-      store[:delete_modal]   = object.current_account.user.setting_delete_modal
-      store[:auto_play_gif]  = object.current_account.user.setting_auto_play_gif
-      store[:reduce_motion]  = object.current_account.user.setting_reduce_motion
+      store[:me]                      = object.current_account.id.to_s
+      store[:unfollow_modal]          = object.current_account.user.setting_unfollow_modal
+      store[:boost_modal]             = object.current_account.user.setting_boost_modal
+      store[:favourite_modal]         = object.current_account.user.setting_favourite_modal
+      store[:delete_modal]            = object.current_account.user.setting_delete_modal
+      store[:auto_play_gif]           = object.current_account.user.setting_auto_play_gif
+      store[:display_sensitive_media] = object.current_account.user.setting_display_sensitive_media
+      store[:reduce_motion]           = object.current_account.user.setting_reduce_motion
     end
 
     store
diff --git a/app/serializers/rest/instance_serializer.rb b/app/serializers/rest/instance_serializer.rb
index 65907dad2..cab05e60a 100644
--- a/app/serializers/rest/instance_serializer.rb
+++ b/app/serializers/rest/instance_serializer.rb
@@ -4,7 +4,12 @@ class REST::InstanceSerializer < ActiveModel::Serializer
   include RoutingHelper
 
   attributes :uri, :title, :description, :email,
-             :version, :urls, :stats, :thumbnail, :max_toot_chars
+             :version, :urls, :stats, :thumbnail, :max_toot_chars,
+             :languages
+
+  has_one :contact_account, serializer: REST::AccountSerializer
+
+  delegate :contact_account, to: :instance_presenter
 
   def uri
     Rails.configuration.x.local_domain
@@ -46,6 +51,10 @@ class REST::InstanceSerializer < ActiveModel::Serializer
     { streaming_api: Rails.configuration.x.streaming_api_base_url }
   end
 
+  def languages
+    [I18n.default_locale]
+  end
+
   private
 
   def instance_presenter