Wings persister saves a native valkyrie resource

Adds all current shared specs from valkyrie, marks pending those that do
not pass. Removed ones that were pending upstream (i.e. not supported in
valkyrie adapters). Removed deep nesting and mixed nesting.

Sketches out the beginning of a "Default" active fedora object for use
with an unrecognized Valkyrie Resource

Co-authored-by: LaRita Robinson <[email protected]>
Co-authored-by: jeremyf <[email protected]>

.rubocop_fixme.yml

@@ -129,7 +129,7 @@ RSpec/ExampleLength:
     - 'spec/services/hyrax/workflow/state_machine_generator_spec.rb'
     - 'spec/services/hyrax/workflow/workflow_importer_spec.rb'
     - 'spec/views/**/*'
-
+    - 'spec/wings/valkyrie/persister_spec.rb'
 RSpec/VerifiedDoubles:
   Enabled: false
 

lib/hyrax.rb

@@ -17,7 +17,6 @@
 require 'hyrax/version'
 require 'hyrax/inflections'
 require 'kaminari_route_prefix'
-require 'wings'
 
 module Hyrax
   extend ActiveSupport::Autoload

lib/hyrax/engine.rb

@@ -70,6 +70,7 @@ class Engine < ::Rails::Engine
       require 'dry/struct'
       require 'dry/equalizer'
       require 'dry/validation'
+      require 'wings'
       begin
         require 'valkyrie'
       rescue LoadError

lib/wings/active_fedora_converter.rb

@@ -27,12 +27,18 @@ def initialize(resource:)
     ##
     # @return [ActiveFedora::Base]
     def convert
-      resource.internal_resource.constantize.new(attributes).tap do |obj|
+      active_fedora_class.new(attributes).tap do |obj|
         obj.id = id unless id.empty?
-        resource.member_ids.each { |valkyrie_id| obj.members << ActiveFedora::Base.find(valkyrie_id.id) } if resource.respond_to? :member_ids
+        resource.member_ids.each { |valkyrie_id| obj.members << ActiveFedora::Base.find(valkyrie_id.id) } if resource.respond_to?(:member_ids) && resource.member_ids
       end
     end
 
+    def active_fedora_class
+      klass = resource.internal_resource.constantize
+      return klass if klass <= ActiveFedora::Base
+      DefaultWork
+    end
+
     ##
     # @return [Hash<Symbol, Object>]
     def attributes
@@ -55,7 +61,36 @@ def attributes
     ##
     # @return [String]
     def id
+      return "" unless resource.respond_to?(:alternate_ids)
       resource.alternate_ids.first.to_s
     end
+
+    # A dummy work class for valkyrie resources that don't have corresponding
+    # hyrax ActiveFedora::Base models.
+    #
+    # A possible improvement would be to dynamically generate properties based
+    # on what's found in the resource.
+    class DefaultWork < ActiveFedora::Base
+      include Hyrax::WorkBehavior
+      property :ordered_authors, predicate: ::RDF::Vocab::DC.creator
+      property :ordered_nested, predicate: ::RDF::URI("http://example.com/ordered_nested")
+      property :nested_resource, predicate: ::RDF::URI("http://example.com/nested_resource"), class_name: "Wings::ActiveFedoraConverter::NestedResource"
+      accepts_nested_attributes_for :nested_resource
+
+      # self.indexer = <%= class_name %>Indexer
+      include ::Hyrax::BasicMetadata
+    end
+
+    class NestedResource < ActiveTriples::Resource
+      def initialize(uri = RDF::Node.new, _parent = ActiveTriples::Resource.new)
+        uri = if uri.try(:node?)
+                RDF::URI("#nested_resource_#{uri.to_s.gsub('_:', '')}")
+              elsif uri.to_s.include?('#')
+                RDF::URI(uri)
+              end
+        super
+      end
+      include ::Hyrax::BasicMetadata
+    end
   end
 end