Add support for Allinson Flex metadata

Implemented a sql query to pull labels and names from
`AllinsonFlex::ProfileProperty` so all defined m3 metadata can be
displayed.

lib/iiif_print.rb

@@ -107,7 +107,7 @@ def iiif_print_config?
   # @see Hyrax::IiifManifestPresenter#manifest_metadata
   def self.manifest_metadata_for(work:,
                                  version: config.default_iiif_manifest_version,
-                                 fields: default_fields_for(work),
+                                 fields: defined?(AllinsonFlex) ? allinson_flex_fields_for(work) : default_fields_for(work),
                                  current_ability:,
                                  base_url:)
     Metadata.build_metadata_for(work: work,
@@ -133,4 +133,29 @@ def self.default_fields_for(_work, fields: config.metadata_fields)
       )
     end
   end
+
+  def self.allinson_flex_fields_for(_work, fields: allinson_flex_fields)
+    fields.map do |field|
+      Field.new(
+        name: field.name,
+        label: field.label,
+        # TODO: transform Allinson Flex `indexing` properties to determine
+        # render as value (ex. facetable => render_as: faceted)
+        options: nil
+      )
+    end
+  end
+
+  def self.allinson_flex_fields
+    AllinsonFlex::ProfileProperty
+      .find_by_sql(
+        "SELECT DISTINCT allinson_flex_profile_texts.value AS label, " \
+        "allinson_flex_profile_properties.name AS name " \
+        "FROM allinson_flex_profile_properties " \
+        "JOIN allinson_flex_profile_texts " \
+        "ON allinson_flex_profile_properties.id = " \
+          "allinson_flex_profile_texts.profile_property_id " \
+        "WHERE allinson_flex_profile_texts.name = 'display_label'"
+      )
+  end
 end

lib/iiif_print/metadata.rb

@@ -27,7 +27,7 @@ def build_metadata
 
     def build_metadata_for_v2
       fields.map do |field|
-        label = Hyrax::Renderers::AttributeRenderer.new(field.name, nil).label
+        label = Hyrax::Renderers::AttributeRenderer.new(field.label, nil).label
         if field.name == :collection && member_of_collection?
           viewable_collections = Hyrax::CollectionMemberService.run(work, @current_ability)
           next if viewable_collections.empty?