Fix the file preview modal so it supports WOPI_ENABLED == false

app/controllers/assets_controller.rb

@@ -5,6 +5,7 @@ class AssetsController < ApplicationController
   include ActionView::Helpers::TextHelper
   include ActionView::Helpers::UrlHelper
   include ActionView::Context
+  include ApplicationHelper
   include InputSanitizeHelper
   include FileIconsHelper
 
@@ -81,7 +82,7 @@ class AssetsController < ApplicationController
       )
     end
 
-    if wopi_file?(@asset)
+    if wopi_enabled? && wopi_file?(@asset)
       edit_supported, title = wopi_file_edit_button_status
       response_json['wopi-controls'] = render_to_string(
         partial: 'shared/file_wopi_controlls.html.erb',
@@ -293,6 +294,7 @@ class AssetsController < ApplicationController
   def asset_data_type(asset)
     return 'wopi' if wopi_file?(asset)
     return 'image' if asset.is_image?
+
     'file'
   end
 end

app/helpers/application_helper.rb

@@ -221,4 +221,8 @@ module ApplicationHelper
     user.avatar(style) == '/images/icon_small/missing.png' ||
       user.avatar(style) == '/images/thumb/missing.png'
   end
+
+  def wopi_enabled?
+    ENV['WOPI_ENABLED'] == 'true'
+  end
 end

app/views/assets/wopi/_create_wopi_file_button.html.erb

@@ -1,11 +1,12 @@
- <%= link_to create_wopi_file_path,
-             class: 'btn btn-default create-wopi-file-btn',
-             target: '_blank',
+<% if wopi_enabled? %>
+  <%= link_to create_wopi_file_path,
+              class: 'btn btn-default create-wopi-file-btn',
+              target: '_blank',
               title: 'Create_new_file',
               data: { 'id': element_id, 'type': element_type, } do %>
-
-   <span class="btn btn-default new-asset-upload-button">
-    <span class="fas fa-file-medical new-asset-upload-icon"></span>
-      <%=t 'assets.create_wopi_file.button_text' %>
-   </span>
+    <span class="btn btn-default new-asset-upload-button">
+      <span class="fas fa-file-medical new-asset-upload-icon"></span>
+        <%=t 'assets.create_wopi_file.button_text' %>
+    </span>
   <% end %>
+<% end %>