Serialize master file display title to iiif ranges

app/models/concerns/master_file_behavior.rb

@@ -68,7 +68,7 @@ def stream_details
     # Returns the hash
     return({
       id: self.id,
-      label: title,
+      label: structure_title,
       is_video: is_video?,
       poster_image: poster_path,
       embed_code: embed_code(EMBED_SIZE[:medium], {urlappend: '/embed'}),
@@ -119,6 +119,10 @@ def embed_title
     [media_object.title, display_title].compact.join(" - ")
   end
 
+  def structure_title
+    display_title.present? ? display_title : media_object.title
+  end
+
   def embed_code(width, permalink_opts = {})
     begin
       url = if self.permalink.present?

app/models/iiif_canvas_presenter.rb

@@ -131,8 +131,7 @@ def supplemental_captions_transcripts
       files
     end
 
-    def simple_iiif_range(label = stream_info[:embed_title])
-      # TODO: embed_title?
+    def simple_iiif_range(label = stream_info[:label])
       IiifManifestRange.new(
         label: { "none" => [label] },
         items: [

app/presenters/speedy_af/proxy/master_file.rb

@@ -1,11 +1,11 @@
 # Copyright 2011-2023, The Trustees of Indiana University and Northwestern
 #   University.  Licensed under the Apache License, Version 2.0 (the "License");
 #   you may not use this file except in compliance with the License.
-# 
+#
 # You may obtain a copy of the License at
-# 
+#
 # http://www.apache.org/licenses/LICENSE-2.0
-# 
+#
 # Unless required by applicable law or agreed to in writing, software distributed
 #   under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
 #   CONDITIONS OF ANY KIND, either express or implied. See the License for the

spec/models/iiif_canvas_presenter_spec.rb

@@ -88,13 +88,27 @@
     end
 
     context 'with no structural metadata' do
-      let(:structure_xml) { "" }
+      context 'master file with title' do
+        let(:structure_xml) { "" }
+        let(:master_file) { FactoryBot.create(:master_file, title: "video.mp4", media_object: media_object, derivatives: [derivative]) }
+
+        it 'autogenerates a basic range with structure_title as label' do
+        	expect(subject.label.to_s).to eq "{\"none\"=>[\"#{master_file.structure_title}\"]}"
+        	expect(subject.items.size).to eq 1
+        	expect(subject.items.first).to be_a IiifCanvasPresenter
+          expect(subject.items.first.media_fragment).to eq "t=0,#{master_file.duration.to_f/1000}"
+        end
+      end
 
-      it 'autogenerates a basic range' do
-      	expect(subject.label.to_s).to eq "{\"none\"=>[\"#{master_file.embed_title}\"]}"
-      	expect(subject.items.size).to eq 1
-      	expect(subject.items.first).to be_a IiifCanvasPresenter
-        expect(subject.items.first.media_fragment).to eq "t=0,#{master_file.duration.to_f/1000}"
+      context 'master file without title' do
+        let(:structure_xml) { "" }
+
+        it 'autogenerates a basic range with media_object.title as label' do
+        	expect(subject.label.to_s).to eq "{\"none\"=>[\"#{media_object.title}\"]}"
+        	expect(subject.items.size).to eq 1
+        	expect(subject.items.first).to be_a IiifCanvasPresenter
+          expect(subject.items.first.media_fragment).to eq "t=0,#{master_file.duration.to_f/1000}"
+        end
       end
     end