Gab Social. All are welcome.

app/controllers/activitypub/collections_controller.rb

@@ -0,0 +1,63 @@
+# frozen_string_literal: true
+
+class ActivityPub::CollectionsController < Api::BaseController
+  include SignatureVerification
+
+  before_action :set_account
+  before_action :set_size
+  before_action :set_statuses
+  before_action :set_cache_headers
+
+  def show
+    skip_session!
+
+    render_cached_json(['activitypub', 'collection', @account, params[:id]], content_type: 'application/activity+json') do
+      ActiveModelSerializers::SerializableResource.new(
+        collection_presenter,
+        serializer: ActivityPub::CollectionSerializer,
+        adapter: ActivityPub::Adapter,
+        skip_activities: true
+      )
+    end
+  end
+
+  private
+
+  def set_account
+    @account = Account.find_local!(params[:account_username])
+  end
+
+  def set_statuses
+    @statuses = scope_for_collection
+    @statuses = cache_collection(@statuses, Status)
+  end
+
+  def set_size
+    case params[:id]
+    when 'featured'
+      @account.pinned_statuses.count
+    else
+      raise ActiveRecord::RecordNotFound
+    end
+  end
+
+  def scope_for_collection
+    case params[:id]
+    when 'featured'
+      @account.statuses.permitted_for(@account, signed_request_account).tap do |scope|
+        scope.merge!(@account.pinned_statuses)
+      end
+    else
+      raise ActiveRecord::RecordNotFound
+    end
+  end
+
+  def collection_presenter
+    ActivityPub::CollectionPresenter.new(
+      id: account_collection_url(@account, params[:id]),
+      type: :ordered,
+      size: @size,
+      items: @statuses
+    )
+  end
+end