Add a new aggregation to support open_licenses

This aggregation will remove need to count manually licenses on frontend.
In addition this also will give sub aggregation that counts by resourcetype.

app/graphql/types/work_connection_with_total_type.rb

@@ -7,9 +7,11 @@ class WorkConnectionWithTotalType < BaseConnection
   field :total_count, Integer, null: false, cache: true
   field :totalCountFromCrossref,
         resolver: TotalCountFromCrossref, null: true, cache: true
+  field :total_open_licenses, Integer, null: true, cache: true
   field :total_content_url, Integer, null: true, cache: true
   field :published, [FacetType], null: true, cache: true
   field :resource_types, [FacetType], null: true, cache: true
+  field :open_license_resource_types, [FacetType], null: true, cache: true
   field :registration_agencies, [FacetType], null: true, cache: true
   field :repositories, [FacetType], null: true, cache: true
   field :affiliations, [FacetType], null: true, cache: true
@@ -26,6 +28,10 @@ def total_content_url
     object.aggregations.content_url_count.value.to_i
   end
 
+  def total_open_licenses
+    object.aggregations.open_licenses.doc_count.to_i
+  end
+
   def published
     if object.aggregations.published
       facet_by_range(object.aggregations.published.buckets)
@@ -35,8 +41,16 @@ def published
   end
 
   def resource_types
-    if object.aggregations.resource_types
-      facet_by_combined_key(object.aggregations.resource_types.buckets)
+    if object.aggregations.authors
+      facet_by_combined_key(object.aggregations.authors.buckets)
+    else
+      []
+    end
+  end
+
+  def open_license_resource_types
+    if object.aggregations.open_licenses
+      facet_by_combined_key(object.aggregations.open_licenses.resource_types.buckets)
     else
       []
     end

app/models/doi.rb

@@ -588,6 +588,14 @@ def self.gql_query_aggregations(facet_count: 10)
     if facet_count.positive?
       {
         resource_types: { terms: { field: "resource_type_id_and_name", size: facet_count, min_doc_count: 1 } },
+        open_licenses: {
+          filter: { terms: { "rights_list.rightsIdentifier": ["cc-by-1.0", "cc-by-2.0", "cc-by-2.5", "cc-by-3.0", "cc-by-3.0-at", "cc-by-3.0-us", "cc-by-4.0", "cc-pddc", "cc0-1.0", "cc-pdm-1.0"] } },
+          aggs: {
+            resource_types: {
+              terms: { field: "resource_type_id_and_name", size: facet_count, min_doc_count: 1 }
+            }
+          }
+        },
         published: {
           date_histogram: {
             field: "publication_year",