Merge upstream 2.0ish #165

24 files changed, 292 insertions, 46 deletions

diff --git a/app/controllers/accounts_controller.rb b/app/controllers/accounts_controller.rb
index 26ab6636b..75915b337 100644
--- a/app/controllers/accounts_controller.rb
+++ b/app/controllers/accounts_controller.rb
@@ -26,7 +26,10 @@ class AccountsController < ApplicationController
       end
 
       format.json do
-        render json: @account, serializer: ActivityPub::ActorSerializer, adapter: ActivityPub::Adapter, content_type: 'application/activity+json'
+        render json: @account,
+               serializer: ActivityPub::ActorSerializer,
+               adapter: ActivityPub::Adapter,
+               content_type: 'application/activity+json'
       end
     end
   end
diff --git a/app/controllers/activitypub/inboxes_controller.rb b/app/controllers/activitypub/inboxes_controller.rb
index b37910b36..76553a162 100644
--- a/app/controllers/activitypub/inboxes_controller.rb
+++ b/app/controllers/activitypub/inboxes_controller.rb
@@ -9,9 +9,9 @@ class ActivityPub::InboxesController < Api::BaseController
     if signed_request_account
       upgrade_account
       process_payload
-      head 201
-    else
       head 202
+    else
+      [signature_verification_failure_reason, 401]
     end
   end
 
@@ -32,6 +32,7 @@ class ActivityPub::InboxesController < Api::BaseController
     end
 
     Pubsubhubbub::UnsubscribeWorker.perform_async(signed_request_account.id) if signed_request_account.subscribed?
+    DeliveryFailureTracker.track_inverse_success!(signed_request_account)
   end
 
   def process_payload
diff --git a/app/controllers/admin/account_moderation_notes_controller.rb b/app/controllers/admin/account_moderation_notes_controller.rb
new file mode 100644
index 000000000..414a875d0
--- /dev/null
+++ b/app/controllers/admin/account_moderation_notes_controller.rb
@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+class Admin::AccountModerationNotesController < Admin::BaseController
+  def create
+    @account_moderation_note = current_account.account_moderation_notes.new(resource_params)
+    if @account_moderation_note.save
+      @target_account = @account_moderation_note.target_account
+      redirect_to admin_account_path(@target_account.id), notice: I18n.t('admin.account_moderation_notes.created_msg')
+    else
+      @account = @account_moderation_note.target_account
+      @moderation_notes = @account.targeted_moderation_notes.latest
+      render template: 'admin/accounts/show'
+    end
+  end
+
+  def destroy
+    @account_moderation_note = AccountModerationNote.find(params[:id])
+    @target_account = @account_moderation_note.target_account
+    @account_moderation_note.destroy
+    redirect_to admin_account_path(@target_account.id), notice: I18n.t('admin.account_moderation_notes.destroyed_msg')
+  end
+
+  private
+
+  def resource_params
+    params.require(:account_moderation_note).permit(
+      :content,
+      :target_account_id
+    )
+  end
+end
diff --git a/app/controllers/admin/accounts_controller.rb b/app/controllers/admin/accounts_controller.rb
index 54c659e1b..ffa4dc850 100644
--- a/app/controllers/admin/accounts_controller.rb
+++ b/app/controllers/admin/accounts_controller.rb
@@ -9,7 +9,10 @@ module Admin
       @accounts = filtered_accounts.page(params[:page])
     end
 
-    def show; end
+    def show
+      @account_moderation_note = current_account.account_moderation_notes.new(target_account: @account)
+      @moderation_notes = @account.targeted_moderation_notes.latest
+    end
 
     def subscribe
       Pubsubhubbub::SubscribeWorker.perform_async(@account.id)
diff --git a/app/controllers/admin/custom_emojis_controller.rb b/app/controllers/admin/custom_emojis_controller.rb
index d70514d9a..ca81f3255 100644
--- a/app/controllers/admin/custom_emojis_controller.rb
+++ b/app/controllers/admin/custom_emojis_controller.rb
@@ -2,8 +2,10 @@
 
 module Admin
   class CustomEmojisController < BaseController
+    before_action :set_custom_emoji, except: [:index, :new, :create]
+
     def index
-      @custom_emojis = CustomEmoji.local
+      @custom_emojis = filtered_custom_emojis.page(params[:page])
     end
 
     def new
@@ -21,14 +23,49 @@ module Admin
     end
 
     def destroy
-      CustomEmoji.find(params[:id]).destroy
+      @custom_emoji.destroy
       redirect_to admin_custom_emojis_path, notice: I18n.t('admin.custom_emojis.destroyed_msg')
     end
 
+    def copy
+      emoji = CustomEmoji.new(domain: nil, shortcode: @custom_emoji.shortcode, image: @custom_emoji.image)
+
+      if emoji.save
+        redirect_to admin_custom_emojis_path, notice: I18n.t('admin.custom_emojis.copied_msg')
+      else
+        redirect_to admin_custom_emojis_path, alert: I18n.t('admin.custom_emojis.copy_failed_msg')
+      end
+    end
+
+    def enable
+      @custom_emoji.update!(disabled: false)
+      redirect_to admin_custom_emojis_path, notice: I18n.t('admin.custom_emojis.enabled_msg')
+    end
+
+    def disable
+      @custom_emoji.update!(disabled: true)
+      redirect_to admin_custom_emojis_path, notice: I18n.t('admin.custom_emojis.disabled_msg')
+    end
+
     private
 
+    def set_custom_emoji
+      @custom_emoji = CustomEmoji.find(params[:id])
+    end
+
     def resource_params
       params.require(:custom_emoji).permit(:shortcode, :image)
     end
+
+    def filtered_custom_emojis
+      CustomEmojiFilter.new(filter_params).results
+    end
+
+    def filter_params
+      params.permit(
+        :local,
+        :remote
+      )
+    end
   end
 end
diff --git a/app/controllers/admin/email_domain_blocks_controller.rb b/app/controllers/admin/email_domain_blocks_controller.rb
new file mode 100644
index 000000000..09275d5dc
--- /dev/null
+++ b/app/controllers/admin/email_domain_blocks_controller.rb
@@ -0,0 +1,40 @@
+# frozen_string_literal: true
+
+module Admin
+  class EmailDomainBlocksController < BaseController
+    before_action :set_email_domain_block, only: [:show, :destroy]
+
+    def index
+      @email_domain_blocks = EmailDomainBlock.page(params[:page])
+    end
+
+    def new
+      @email_domain_block = EmailDomainBlock.new
+    end
+
+    def create
+      @email_domain_block = EmailDomainBlock.new(resource_params)
+
+      if @email_domain_block.save
+        redirect_to admin_email_domain_blocks_path, notice: I18n.t('admin.email_domain_blocks.created_msg')
+      else
+        render :new
+      end
+    end
+
+    def destroy
+      @email_domain_block.destroy
+      redirect_to admin_email_domain_blocks_path, notice: I18n.t('admin.email_domain_blocks.destroyed_msg')
+    end
+
+    private
+
+    def set_email_domain_block
+      @email_domain_block = EmailDomainBlock.find(params[:id])
+    end
+
+    def resource_params
+      params.require(:email_domain_block).permit(:domain)
+    end
+  end
+end
diff --git a/app/controllers/api/salmon_controller.rb b/app/controllers/api/salmon_controller.rb
index e9e700b18..143e9d3cd 100644
--- a/app/controllers/api/salmon_controller.rb
+++ b/app/controllers/api/salmon_controller.rb
@@ -7,9 +7,11 @@ class Api::SalmonController < Api::BaseController
   def update
     if verify_payload?
       process_salmon
-      head 201
-    else
       head 202
+    elsif payload.present?
+      [signature_verification_failure_reason, 401]
+    else
+      head 400
     end
   end
 
diff --git a/app/controllers/api/v1/accounts/relationships_controller.rb b/app/controllers/api/v1/accounts/relationships_controller.rb
index a88cf2021..91a942d75 100644
--- a/app/controllers/api/v1/accounts/relationships_controller.rb
+++ b/app/controllers/api/v1/accounts/relationships_controller.rb
@@ -7,7 +7,10 @@ class Api::V1::Accounts::RelationshipsController < Api::BaseController
   respond_to :json
 
   def index
-    @accounts = Account.where(id: account_ids).select('id')
+    accounts = Account.where(id: account_ids).select('id')
+    # .where doesn't guarantee that our results are in the same order
+    # we requested them, so return the "right" order to the requestor.
+    @accounts = accounts.index_by(&:id).values_at(*account_ids)
     render json: @accounts, each_serializer: REST::RelationshipSerializer, relationships: relationships
   end
 
diff --git a/app/controllers/api/v1/apps/credentials_controller.rb b/app/controllers/api/v1/apps/credentials_controller.rb
new file mode 100644
index 000000000..e469c7d21
--- /dev/null
+++ b/app/controllers/api/v1/apps/credentials_controller.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+class Api::V1::Apps::CredentialsController < Api::BaseController
+  before_action -> { doorkeeper_authorize! :read }
+
+  respond_to :json
+
+  def show
+    render json: doorkeeper_token.application, serializer: REST::StatusSerializer::ApplicationSerializer
+  end
+end
diff --git a/app/controllers/api/v1/apps_controller.rb b/app/controllers/api/v1/apps_controller.rb
index 44a27b20a..e9f7a7291 100644
--- a/app/controllers/api/v1/apps_controller.rb
+++ b/app/controllers/api/v1/apps_controller.rb
@@ -1,8 +1,6 @@
 # frozen_string_literal: true
 
 class Api::V1::AppsController < Api::BaseController
-  respond_to :json
-
   def create
     @app = Doorkeeper::Application.create!(application_options)
     render json: @app, serializer: REST::ApplicationSerializer
diff --git a/app/controllers/api/v1/blocks_controller.rb b/app/controllers/api/v1/blocks_controller.rb
index a412e4341..3a6690766 100644
--- a/app/controllers/api/v1/blocks_controller.rb
+++ b/app/controllers/api/v1/blocks_controller.rb
@@ -15,19 +15,17 @@ class Api::V1::BlocksController < Api::BaseController
   private
 
   def load_accounts
-    default_accounts.merge(paginated_blocks).to_a
-  end
-
-  def default_accounts
-    Account.includes(:blocked_by).references(:blocked_by)
+    paginated_blocks.map(&:target_account)
   end
 
   def paginated_blocks
-    Block.where(account: current_account).paginate_by_max_id(
-      limit_param(DEFAULT_ACCOUNTS_LIMIT),
-      params[:max_id],
-      params[:since_id]
-    )
+    @paginated_blocks ||= Block.eager_load(:target_account)
+                               .where(account: current_account)
+                               .paginate_by_max_id(
+                                 limit_param(DEFAULT_ACCOUNTS_LIMIT),
+                                 params[:max_id],
+                                 params[:since_id]
+                               )
   end
 
   def insert_pagination_headers
@@ -41,21 +39,21 @@ class Api::V1::BlocksController < Api::BaseController
   end
 
   def prev_path
-    unless @accounts.empty?
+    unless paginated_blocks.empty?
       api_v1_blocks_url pagination_params(since_id: pagination_since_id)
     end
   end
 
   def pagination_max_id
-    @accounts.last.blocked_by_ids.last
+    paginated_blocks.last.id
   end
 
   def pagination_since_id
-    @accounts.first.blocked_by_ids.first
+    paginated_blocks.first.id
   end
 
   def records_continue?
-    @accounts.size == limit_param(DEFAULT_ACCOUNTS_LIMIT)
+    paginated_blocks.size == limit_param(DEFAULT_ACCOUNTS_LIMIT)
   end
 
   def pagination_params(core_params)
diff --git a/app/controllers/api/v1/custom_emojis_controller.rb b/app/controllers/api/v1/custom_emojis_controller.rb
index 4dd77fb55..f8cd64455 100644
--- a/app/controllers/api/v1/custom_emojis_controller.rb
+++ b/app/controllers/api/v1/custom_emojis_controller.rb
@@ -4,6 +4,6 @@ class Api::V1::CustomEmojisController < Api::BaseController
   respond_to :json
 
   def index
-    render json: CustomEmoji.local, each_serializer: REST::CustomEmojiSerializer
+    render json: CustomEmoji.local.where(disabled: false), each_serializer: REST::CustomEmojiSerializer
   end
 end
diff --git a/app/controllers/api/v1/media_controller.rb b/app/controllers/api/v1/media_controller.rb
index 8a1992fca..9f330f0df 100644
--- a/app/controllers/api/v1/media_controller.rb
+++ b/app/controllers/api/v1/media_controller.rb
@@ -10,7 +10,7 @@ class Api::V1::MediaController < Api::BaseController
   respond_to :json
 
   def create
-    @media = current_account.media_attachments.create!(file: media_params[:file])
+    @media = current_account.media_attachments.create!(media_params)
     render json: @media, serializer: REST::MediaAttachmentSerializer
   rescue Paperclip::Errors::NotIdentifiedByImageMagickError
     render json: file_type_error, status: 422
@@ -18,10 +18,16 @@ class Api::V1::MediaController < Api::BaseController
     render json: processing_error, status: 500
   end
 
+  def update
+    @media = current_account.media_attachments.where(status_id: nil).find(params[:id])
+    @media.update!(media_params)
+    render json: @media, serializer: REST::MediaAttachmentSerializer
+  end
+
   private
 
   def media_params
-    params.permit(:file)
+    params.permit(:file, :description)
   end
 
   def file_type_error
diff --git a/app/controllers/auth/registrations_controller.rb b/app/controllers/auth/registrations_controller.rb
index 60ace04d7..aac3c31ff 100644
--- a/app/controllers/auth/registrations_controller.rb
+++ b/app/controllers/auth/registrations_controller.rb
@@ -6,6 +6,7 @@ class Auth::RegistrationsController < Devise::RegistrationsController
   before_action :check_enabled_registrations, only: [:new, :create]
   before_action :configure_sign_up_params, only: [:create]
   before_action :set_sessions, only: [:edit, :update]
+  before_action :set_instance_presenter, only: [:new, :update]
 
   def destroy
     not_found
@@ -39,6 +40,10 @@ class Auth::RegistrationsController < Devise::RegistrationsController
 
   private
 
+  def set_instance_presenter
+    @instance_presenter = InstancePresenter.new
+  end
+
   def determine_layout
     %w(edit update).include?(action_name) ? 'admin' : 'auth'
   end
diff --git a/app/controllers/auth/sessions_controller.rb b/app/controllers/auth/sessions_controller.rb
index bc3bd2f4b..463a183e4 100644
--- a/app/controllers/auth/sessions_controller.rb
+++ b/app/controllers/auth/sessions_controller.rb
@@ -8,6 +8,7 @@ class Auth::SessionsController < Devise::SessionsController
   skip_before_action :require_no_authentication, only: [:create]
   skip_before_action :check_suspension, only: [:destroy]
   prepend_before_action :authenticate_with_two_factor, if: :two_factor_enabled?, only: [:create]
+  before_action :set_instance_presenter, only: [:new]
 
   def create
     super do |resource|
@@ -84,6 +85,10 @@ class Auth::SessionsController < Devise::SessionsController
 
   private
 
+  def set_instance_presenter
+    @instance_presenter = InstancePresenter.new
+  end
+
   def home_paths(resource)
     paths = [about_path]
     if single_user_mode? && resource.is_a?(User)
diff --git a/app/controllers/concerns/signature_verification.rb b/app/controllers/concerns/signature_verification.rb
index 4211283ed..2baafb5bf 100644
--- a/app/controllers/concerns/signature_verification.rb
+++ b/app/controllers/concerns/signature_verification.rb
@@ -9,10 +9,15 @@ module SignatureVerification
     request.headers['Signature'].present?
   end
 
+  def signature_verification_failure_reason
+    return @signature_verification_failure_reason if defined?(@signature_verification_failure_reason)
+  end
+
   def signed_request_account
     return @signed_request_account if defined?(@signed_request_account)
 
     unless signed_request?
+      @signature_verification_failure_reason = 'Request not signed'
       @signed_request_account = nil
       return
     end
@@ -27,6 +32,7 @@ module SignatureVerification
     end
 
     if incompatible_signature?(signature_params)
+      @signature_verification_failure_reason = 'Incompatible request signature'
       @signed_request_account = nil
       return
     end
@@ -34,6 +40,7 @@ module SignatureVerification
     account = account_from_key_id(signature_params['keyId'])
 
     if account.nil?
+      @signature_verification_failure_reason = "Public key not found for key #{signature_params['keyId']}"
       @signed_request_account = nil
       return
     end
@@ -44,7 +51,18 @@ module SignatureVerification
     if account.keypair.public_key.verify(OpenSSL::Digest::SHA256.new, signature, compare_signed_string)
       @signed_request_account = account
       @signed_request_account
+    elsif account.possibly_stale?
+      account = account.refresh!
+
+      if account.keypair.public_key.verify(OpenSSL::Digest::SHA256.new, signature, compare_signed_string)
+        @signed_request_account = account
+        @signed_request_account
+      else
+        @signed_verification_failure_reason = "Verification failed for #{account.username}@#{account.domain} #{account.uri}"
+        @signed_request_account = nil
+      end
     else
+      @signed_verification_failure_reason = "Verification failed for #{account.username}@#{account.domain} #{account.uri}"
       @signed_request_account = nil
     end
   end
@@ -99,7 +117,7 @@ module SignatureVerification
       ResolveRemoteAccountService.new.call(key_id.gsub(/\Aacct:/, ''))
     elsif !ActivityPub::TagManager.instance.local_uri?(key_id)
       account   = ActivityPub::TagManager.instance.uri_to_resource(key_id, Account)
-      account ||= ActivityPub::FetchRemoteKeyService.new.call(key_id)
+      account ||= ActivityPub::FetchRemoteKeyService.new.call(key_id, id: false)
       account
     end
   end
diff --git a/app/controllers/emojis_controller.rb b/app/controllers/emojis_controller.rb
new file mode 100644
index 000000000..a82b9340b
--- /dev/null
+++ b/app/controllers/emojis_controller.rb
@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+class EmojisController < ApplicationController
+  before_action :set_emoji
+
+  def show
+    respond_to do |format|
+      format.json do
+        render json: @emoji,
+               serializer: ActivityPub::EmojiSerializer,
+               adapter: ActivityPub::Adapter,
+               content_type: 'application/activity+json'
+      end
+    end
+  end
+
+  private
+
+  def set_emoji
+    @emoji = CustomEmoji.local.find(params[:id])
+  end
+end
diff --git a/app/controllers/follower_accounts_controller.rb b/app/controllers/follower_accounts_controller.rb
index 8eb4d2822..399e79665 100644
--- a/app/controllers/follower_accounts_controller.rb
+++ b/app/controllers/follower_accounts_controller.rb
@@ -10,7 +10,10 @@ class FollowerAccountsController < ApplicationController
       format.html
 
       format.json do
-        render json: collection_presenter, serializer: ActivityPub::CollectionSerializer, adapter: ActivityPub::Adapter, content_type: 'application/activity+json'
+        render json: collection_presenter,
+               serializer: ActivityPub::CollectionSerializer,
+               adapter: ActivityPub::Adapter,
+               content_type: 'application/activity+json'
       end
     end
   end
diff --git a/app/controllers/following_accounts_controller.rb b/app/controllers/following_accounts_controller.rb
index 1ca6f0fe7..1e73d4bd4 100644
--- a/app/controllers/following_accounts_controller.rb
+++ b/app/controllers/following_accounts_controller.rb
@@ -10,7 +10,10 @@ class FollowingAccountsController < ApplicationController
       format.html
 
       format.json do
-        render json: collection_presenter, serializer: ActivityPub::CollectionSerializer, adapter: ActivityPub::Adapter, content_type: 'application/activity+json'
+        render json: collection_presenter,
+               serializer: ActivityPub::CollectionSerializer,
+               adapter: ActivityPub::Adapter,
+               content_type: 'application/activity+json'
       end
     end
   end
diff --git a/app/controllers/manifests_controller.rb b/app/controllers/manifests_controller.rb
index 832e1eb6f..ac267c229 100644
--- a/app/controllers/manifests_controller.rb
+++ b/app/controllers/manifests_controller.rb
@@ -1,11 +1,7 @@
 # frozen_string_literal: true
 
 class ManifestsController < ApplicationController
-  before_action :set_instance_presenter
-
-  def show; end
-
-  def set_instance_presenter
-    @instance_presenter = InstancePresenter.new
+  def show
+    render json: InstancePresenter.new, serializer: ManifestSerializer
   end
 end
diff --git a/app/controllers/settings/follower_domains_controller.rb b/app/controllers/settings/follower_domains_controller.rb
index 90b48887f..9968504e5 100644
--- a/app/controllers/settings/follower_domains_controller.rb
+++ b/app/controllers/settings/follower_domains_controller.rb
@@ -9,7 +9,7 @@ class Settings::FollowerDomainsController < ApplicationController
 
   def show
     @account = current_account
-    @domains = current_account.followers.reorder(nil).group('accounts.domain').select('accounts.domain, count(accounts.id) as accounts_from_domain').page(params[:page]).per(10)
+    @domains = current_account.followers.reorder('MIN(follows.id) DESC').group('accounts.domain').select('accounts.domain, count(accounts.id) as accounts_from_domain').page(params[:page]).per(10)
   end
 
   def update
diff --git a/app/controllers/settings/notifications_controller.rb b/app/controllers/settings/notifications_controller.rb
new file mode 100644
index 000000000..09839f16e
--- /dev/null
+++ b/app/controllers/settings/notifications_controller.rb
@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+class Settings::NotificationsController < ApplicationController
+  layout 'admin'
+
+  before_action :authenticate_user!
+
+  def show; end
+
+  def update
+    user_settings.update(user_settings_params.to_h)
+
+    if current_user.save
+      redirect_to settings_notifications_path, notice: I18n.t('generic.changes_saved_msg')
+    else
+      render :show
+    end
+  end
+
+  private
+
+  def user_settings
+    UserSettingsDecorator.new(current_user)
+  end
+
+  def user_settings_params
+    params.require(:user).permit(
+      notification_emails: %i(follow follow_request reblog favourite mention digest),
+      interactions: %i(must_be_follower must_be_following)
+    )
+  end
+end
diff --git a/app/controllers/statuses_controller.rb b/app/controllers/statuses_controller.rb
index 65206ea96..e8a360fb5 100644
--- a/app/controllers/statuses_controller.rb
+++ b/app/controllers/statuses_controller.rb
@@ -21,13 +21,19 @@ class StatusesController < ApplicationController
       end
 
       format.json do
-        render json: @status, serializer: ActivityPub::NoteSerializer, adapter: ActivityPub::Adapter, content_type: 'application/activity+json'
+        render json: @status,
+               serializer: ActivityPub::NoteSerializer,
+               adapter: ActivityPub::Adapter,
+               content_type: 'application/activity+json'
       end
     end
   end
 
   def activity
-    render json: @status, serializer: ActivityPub::ActivitySerializer, adapter: ActivityPub::Adapter, content_type: 'application/activity+json'
+    render json: @status,
+           serializer: ActivityPub::ActivitySerializer,
+           adapter: ActivityPub::Adapter,
+           content_type: 'application/activity+json'
   end
 
   def embed
diff --git a/app/controllers/tags_controller.rb b/app/controllers/tags_controller.rb
index 3001b2ee3..9f3090e37 100644
--- a/app/controllers/tags_controller.rb
+++ b/app/controllers/tags_controller.rb
@@ -1,24 +1,40 @@
 # frozen_string_literal: true
 
 class TagsController < ApplicationController
-  layout 'public'
+  before_action :set_body_classes
+  before_action :set_instance_presenter
 
   def show
-    @tag      = Tag.find_by!(name: params[:id].downcase)
-    @statuses = Status.as_tag_timeline(@tag, current_account, params[:local]).paginate_by_max_id(20, params[:max_id])
-    @statuses = cache_collection(@statuses, Status)
+    @tag = Tag.find_by!(name: params[:id].downcase)
 
     respond_to do |format|
-      format.html
+      format.html do
+        serializable_resource = ActiveModelSerializers::SerializableResource.new(InitialStatePresenter.new(initial_state_params), serializer: InitialStateSerializer)
+        @initial_state_json   = serializable_resource.to_json
+      end
 
       format.json do
-        render json: collection_presenter, serializer: ActivityPub::CollectionSerializer, adapter: ActivityPub::Adapter, content_type: 'application/activity+json'
+        @statuses = Status.as_tag_timeline(@tag, current_account, params[:local]).paginate_by_max_id(20, params[:max_id])
+        @statuses = cache_collection(@statuses, Status)
+
+        render json: collection_presenter,
+               serializer: ActivityPub::CollectionSerializer,
+               adapter: ActivityPub::Adapter,
+               content_type: 'application/activity+json'
       end
     end
   end
 
   private
 
+  def set_body_classes
+    @body_classes = 'tag-body'
+  end
+
+  def set_instance_presenter
+    @instance_presenter = InstancePresenter.new
+  end
+
   def collection_presenter
     ActivityPub::CollectionPresenter.new(
       id: tag_url(@tag),
@@ -27,4 +43,11 @@ class TagsController < ApplicationController
       items: @statuses.map { |s| ActivityPub::TagManager.instance.uri_for(s) }
     )
   end
+
+  def initial_state_params
+    {
+      settings: {},
+      token: current_session&.token,
+    }
+  end
 end