process acro form fields

app/controllers/templates_debug_controller.rb

@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+class TemplatesDebugController < ApplicationController
+  load_and_authorize_resource :template
+
+  def show
+    attachment = @template.documents.first
+
+    pdf = HexaPDF::Document.new(io: StringIO.new(attachment.download))
+
+    fields = Templates::FindAcroFields.call(pdf, attachment)
+
+    attachment.metadata['pdf'] ||= {}
+    attachment.metadata['pdf']['fields'] = fields
+
+    @template.update!(fields: Templates::ProcessDocument.normalize_attachment_fields(@template, [attachment]))
+
+    ActiveRecord::Associations::Preloader.new(
+      records: [@template],
+      associations: [schema_documents: { preview_images_attachments: :blob }]
+    ).call
+
+    @template_data =
+      @template.as_json.merge(
+        documents: @template.schema_documents.as_json(
+          methods: %i[metadata signed_uuid],
+          include: { preview_images: { methods: %i[url metadata filename] } }
+        )
+      ).to_json
+
+    render 'templates/edit', layout: 'plain'
+  end
+end