refactor start form

app/controllers/start_form_self_controller.rb

@@ -0,0 +1,39 @@
+# frozen_string_literal: true
+
+class StartFormSelfController < ApplicationController
+  load_resource :template, parent: false
+
+  around_action :with_browser_locale
+  before_action :authorize_start!
+
+  def update
+    @submitter = Submitters::StartForm.build_submitters_scope(@template, exclude_completed: true)
+                                      .find_or_initialize_by(email: current_user.email)
+
+    if (is_new_record = @submitter.new_record?)
+      @submitter.name = current_user.full_name
+
+      Submitters::StartForm.assign_submission_attributes(
+        @submitter, @template, ip: request.remote_ip, user_agent: request.user_agent
+      )
+
+      Submissions::AssignDefinedSubmitters.call(@submitter.submission)
+    else
+      @submitter.assign_attributes(ip: request.remote_ip, ua: request.user_agent)
+    end
+
+    @submitter.save!
+
+    Submitters::StartForm.enqueue_new_submitter_jobs(@submitter) if is_new_record
+
+    redirect_to submit_form_path(@submitter.slug)
+  end
+
+  private
+
+  def authorize_start!
+    authorize!(:read, @template)
+
+    redirect_to template_path(@template) if @template.archived_at?
+  end
+end