New helper for file thumbnails

app/helpers/file_icons_helper.rb

@@ -28,6 +28,18 @@ module FileIconsHelper
     fa_class
   end
 
+  def file_fa_icon_class_v2(asset)
+    file_ext = asset.file_file_name.split('.').last
+
+    if Constants::FILE_TEXT_FORMATS.include?(file_ext)
+      return 'fa-file-alt'
+    elsif Constants::WHITELISTED_IMAGE_TYPES.include?(file_ext)
+      return 'fa-image'
+    else
+      return 'fa-paperclip'
+    end
+  end
+
   # For showing next to file
   def file_extension_icon(asset)
     file_ext = asset.file_file_name.split('.').last

app/views/steps/attachments/_item.html.erb

@@ -17,7 +17,7 @@
       <% if image_preview %>
         <%= image_tag image_preview %>
       <% else %>
-        <i class="fas fa-image"></i>
+        <i class="fas <%= file_fa_icon_class_v2(asset) %>"></i>
       <% end %>
     </div>
     <div class="attachment-label"><%= truncate(asset.file_file_name,