Support indexing Recording IIIF 3 manifests.

app/services/iiif_manifest.rb

@@ -58,8 +58,9 @@ def compound_id
   end
 
   def ark_url
-    return unless manifest["rendering"] && manifest["rendering"]["@id"]
-    manifest["rendering"]["@id"]
+    first_rendering = Array.wrap(manifest["rendering"]).first
+    return unless first_rendering && first_rendering["@id"]
+    first_rendering["@id"]
   end
 
   def noid

app/services/iiif_service.rb

@@ -15,6 +15,29 @@ def self.iiif_response(url)
   end
 
   def create_iiif_manifest(manifest, collection = nil)
-    IiifManifest.new(url: manifest['@id'], manifest: manifest, collection: collection)
+    IiifManifest.new(url: manifest['@id'] || manifest['id'], manifest: manifest, collection: collection)
+  end
+
+  def object
+    @object ||= ManifestParser.parse(JSON.parse(response))
+  end
+
+  def manifest?
+    object.is_a?(IIIF::Presentation::Manifest) || object.is_a?(ManifestParser::IIIF3Manifest)
+  end
+
+  class ManifestParser
+    def self.parse(json)
+      return IIIF::Service.parse(json.to_json) unless json["@context"]&.include?("http://iiif.io/api/presentation/3/context.json")
+      IIIF3Manifest.new(json)
+    end
+
+    # IIIF::Presentation doesn't support IIIF 3. Fortunately we don't use much
+    # of it, so a simple wrapper with a label for a manifest gets us there.
+    class IIIF3Manifest < SimpleDelegator
+      def label
+        Array.wrap(__getobj__["label"]).first["@none"]
+      end
+    end
   end
 end

app/values/manifest_metadata.rb

@@ -2,8 +2,11 @@
 
 class ManifestMetadata < Spotlight::Resources::IiifManifest::Metadata
   def jsonld_url
-    return unless @manifest["see_also"]
-    json_ld_see_also = Array.wrap(@manifest["see_also"]).find { |v| v["format"] == "application/ld+json" }
+    # IIIF 3 manifests will have it in seeAlso, it's in see_also for
+    # IIIF::Presentation manifests.
+    see_also = @manifest["see_also"] || @manifest["seeAlso"]
+    return unless see_also
+    json_ld_see_also = Array.wrap(see_also).find { |v| v["format"] == "application/ld+json" }
     return unless json_ld_see_also
     json_ld_see_also["@id"]
   end