CHF::Env feature flags to turn off riiif use on viewer and download link

app/models/chf/env.rb

@@ -139,7 +139,16 @@ def self.instance
 
     define_key :use_image_server_on_show_page,
       system_env_transform: BOOLEAN_TRANSFORM,
-      default: -> { true }
+      default: -> { false }
+
+    define_key :use_image_server_on_viewer,
+      system_env_transform: BOOLEAN_TRANSFORM,
+      default: -> { false }
+
+    define_key :use_image_server_downloads,
+      system_env_transform: BOOLEAN_TRANSFORM,
+      default: -> { false }
+
 
     define_key :riiif_originals_cache, default: -> {
       Rails.env.production? ? "/var/sufia/riiif-originals" : Rails.root.join("tmp", "riiif-originals").to_s
@@ -153,12 +162,16 @@ def self.instance
     # but for now we calculate based on app_role value, but do it here
     # so we have one place to change.
     # Can still override with ENV or local_env.yml locally, nice!
-    define_key :serve_riiif_paths, default: -> {
-      lookup(:app_role).blank? || lookup(:app_role) == "riiif"
-    }
-    define_key :serve_app_paths, default: -> {
-      lookup(:app_role).blank? || lookup(:app_role) == "app"
-    }
+    define_key :serve_riiif_paths,
+      system_env_transform: BOOLEAN_TRANSFORM,
+      default: -> {
+        lookup(:app_role).blank? || lookup(:app_role) == "riiif"
+      }
+    define_key :serve_app_paths,
+      system_env_transform: BOOLEAN_TRANSFORM,
+      default: -> {
+        lookup(:app_role).blank? || lookup(:app_role) == "app"
+      }
 
   end
 end

app/views/curation_concerns/base/_chf_download_menu.html.erb

@@ -31,18 +31,18 @@ locals:
                     analytics_label: parent.id
                   }) %>
     </li>
-    <li>
-      <%= link_to("Full-size JPEG",
-                  (member ? riiif_image_url(member.riiif_file_id, format: "jpg", size: "full") : "#"),
-                  target: "_new",
-                  data: {
-                    content_hook: "dl-jpeg-link",
-                    # These action/labels are based on what sufia/hyrax uses, although
-                    # a bit weird.
-                    analytics_category: "Work",
-                    analytics_action: "download-jpg",
-                    analytics_label: parent.id
-                  }) %>
-    </li>
+    <% if CHF::Env.lookup(:use_image_server_downloads) %>
+      <li>
+        <%= link_to("Full-size JPEG",
+                    (member ? riiif_image_url(member.riiif_file_id, format: "jpg", size: "full") : "#"),
+                    target: "_new",
+                    data: {
+                      content_hook: "dl-jpeg-link",
+                      analytics_category: "Work",
+                      analytics_action: "download-jpg",
+                      analytics_label: parent.id
+                    }) %>
+      </li>
+    <% end %>
   </ul>
 

app/views/curation_concerns/base/_chf_image_viewer.html.erb

@@ -52,8 +52,14 @@
                       member_id: member_presenter.representative_id,
                       member_show_url: contextual_path(member_presenter, work),
                       member_dl_original_url: main_app.download_path(member_presenter.representative_id),
-                      member_dl_jpeg_url: riiif_image_url(member_presenter.riiif_file_id, format: "jpg", size: "full"),
-                      tile_source: riiif_info_url(member_presenter.riiif_file_id),
+                      member_dl_jpeg_url: (if CHF::Env.lookup(:use_image_server_downloads)
+                                            riiif_image_url(member_presenter.riiif_file_id, format: "jpg", size: "full")
+                                          end),
+                      tile_source: (if CHF::Env.lookup(:use_image_server_on_viewer)
+                                      riiif_info_url(member_presenter.riiif_file_id)
+                                    else
+                                      {"type" => "image", "url" => main_app.download_path(member_presenter.representative_id, file: "jpeg")}.to_json
+                                    end),
                       src: member_presenter.first(blacklight_config.view_config(document_index_view_type).thumbnail_field)
                     } if member_presenter.riiif_file_id # don't show it in the viewer if there's no image
                 -%>