rename to templates

app/controllers/submit_form_controller.rb

@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+
+class SubmitFormController < ApplicationController
+  layout 'form'
+
+  skip_before_action :authenticate_user!
+
+  def show
+    @submission = Submission.preload(template: { documents_attachments: { preview_images_attachments: :blob } })
+                            .find_by!(slug: params[:slug])
+
+    return redirect_to submit_form_completed_path(@submission.slug) if @submission.completed_at?
+  end
+
+  def update
+    submission = Submission.find_by!(slug: params[:slug])
+    submission.values.merge!(normalized_values)
+    submission.completed_at = Time.current if params[:completed] == 'true'
+
+    submission.save
+
+    head :ok
+  end
+
+  def completed
+    @submission = Submission.find_by!(slug: params[:submit_form_slug])
+  end
+
+  private
+
+  def normalized_values
+    params[:values].to_unsafe_h.transform_values { |v| v.is_a?(Array) ? v.compact_blank : v }
+  end
+end