Looking up manifest by ARK

app/controllers/catalog_controller.rb

@@ -263,4 +263,17 @@ def admin_state_facet
     return unless can? :create, ScannedResource
     blacklight_config.add_facet_field 'workflow_state_name_ssim', label: 'State'
   end
+
+  def lookup_manifest
+    ark = "#{params[:prefix]}/#{params[:naan]}/#{params[:arkid]}"
+    _, result = search_results(q: "identifier_ssim:#{RSolr.solr_escape(ark)}", fl: "id, has_model_ssim", rows: 1)
+
+    if result.first
+      object_id = result.first['id']
+      model_name = result.first['has_model_ssim'].first
+      redirect_to polymorphic_url([:manifest, :hyrax, model_name.underscore.to_sym], id: object_id)
+    else
+      render json: { message: "No manifest found for #{ark}" }, status: 404
+    end
+  end
 end

config/routes.rb

@@ -42,6 +42,7 @@
 
   mount GeoWorks::Engine => '/'
   get "/iiif/collections", defaults: { format: :json }, controller: 'hyrax/collections', action: :index_manifest
+  get "/iiif/lookup/:prefix/:naan/:arkid", controller: 'catalog', action: :lookup_manifest, as: :lookup_manifest
 
   namespace :hyrax, path: :concern do
     resources :parent, only: [] do

spec/controllers/catalog_controller_spec.rb

@@ -125,6 +125,25 @@
     end
   end
 
+  describe "manifest lookup" do
+    context "when the manifest is found" do
+      it "redirects to the manifest" do
+        resource = FactoryGirl.create(:complete_scanned_resource, identifier: 'ark:/99999/12345678')
+        resource.save
+
+        get :lookup_manifest, params: { prefix: 'ark:', naan: '99999', arkid: '12345678' }
+        expect(response).to redirect_to "http://test.host/concern/scanned_resources/#{resource.id}/manifest?locale=en"
+      end
+    end
+
+    context "when the manifeset is not found" do
+      it "sends a 404 error" do
+        get :lookup_manifest, params: { prefix: 'ark:', naan: '99999', arkid: '99999999' }
+        expect(response.status).to be 404
+      end
+    end
+  end
+
   def document_ids
     assigns[:document_list].map do |x|
       x["id"]