Don't allow download of archived files

app/controllers/essences_controller.rb

@@ -23,6 +23,13 @@ def show
   end
 
   def download
+    if !@current_user.admin? && @essence.is_archived?
+      flash[:error] = 'This file is archived and can only be downloaded by admins'
+      redirect_to [@collection, @item, @essence]
+
+      return
+    end
+
     Download.create! user: current_user, essence: @essence
 
     location = Nabu::Catalog.instance.essence_url(@essence, as_attachment: true)
@@ -32,6 +39,13 @@ def download
   end
 
   def display
+    if !@current_user.admin? && @essence.is_archived?
+      flash[:error] = 'This file is archived and can only be displayed to admins'
+      redirect_to [@collection, @item, @essence]
+
+      return
+    end
+
     location = Nabu::Catalog.instance.essence_url(@essence)
     raise ActionController::RoutingError, 'Essence file not found' unless location
 
@@ -71,6 +85,6 @@ def essence_params
 
 
   def find_essence
-    @essence = Essence.includes(:item => { item_agents: %i[agent_role user] }).find(params[:id])
+    @essence = Essence.includes(item: { item_agents: %i[agent_role user] }).find(params[:id])
   end
 end

app/models/essence.rb

@@ -109,6 +109,10 @@ def title
     filename
   end
 
+  def is_archived?
+    filename.ends_with?('.mxf') || filename.ends_with?('.mkv')
+  end
+
   def full_path
     # TODO: probably want to change this to be filename at some point, non-urgent though
     "#{item.full_path}/essences/#{id}"

app/views/essences/show.html.haml

@@ -67,7 +67,9 @@
       %tr
         %td.empty
         %td.empty
-          - if can? :download, @essence
+          - if admin_user_signed_in?
+            = link_to 'Download', download_collection_item_essence_path(@collection, @item, @essence), download: true
+          - elsif [email protected]_archived? && can?(:download, @essence)
             = link_to 'Download', download_collection_item_essence_path(@collection, @item, @essence), download: true
           - else
             %p No access rights to download essence.
@@ -79,7 +81,7 @@
   %fieldset
     %legend Preview
     #media_item
-      - if can? :display, @essence
+      - if [email protected]_archived? && can?(:display, @essence)
         - case @essence.mimetype
         - when /^image\/(jpeg|png|gif|tiff|bmp)/
           = image_tag display_collection_item_essence_path(@collection, @item, @essence)