await for completion when order enforced

app/controllers/submit_form_controller.rb

@@ -12,16 +12,20 @@ class SubmitFormController < ApplicationController
   def show
     @submitter = Submitter.find_by!(slug: params[:slug])
 
+    submission = @submitter.submission
+
     return redirect_to submit_form_completed_path(@submitter.slug) if @submitter.completed_at?
-    return render :archived if @submitter.submission.template.archived_at? || @submitter.submission.archived_at?
-    return render :expired if @submitter.submission.expired?
+    return render :archived if submission.template.archived_at? || submission.archived_at?
+    return render :expired if submission.expired?
     return render :declined if @submitter.declined_at?
+    return render :awaiting if submission.template.preferences['submitters_order'] == 'preserved' &&
+                               !Submitters.current_submitter_order?(@submitter)
 
     Submitters.preload_with_pages(@submitter)
 
     Submitters::MaybeUpdateDefaultValues.call(@submitter, current_user)
 
-    @attachments_index = ActiveStorage::Attachment.where(record: @submitter.submission.submitters, name: :attachments)
+    @attachments_index = ActiveStorage::Attachment.where(record: submission.submitters, name: :attachments)
                                                   .preload(:blob).index_by(&:uuid)
 
     @form_configs = Submitters::FormConfigs.call(@submitter, CONFIG_KEYS)

app/views/submit_form/awaiting.html.erb

@@ -0,0 +1,21 @@
+<div class="max-w-md mx-auto px-2 mt-12 mb-4">
+  <div class="space-y-6 mx-auto">
+    <div class="space-y-6">
+      <div class="flex items-center justify-center">
+        <%= render 'start_form/banner' %>
+      </div>
+      <div class="flex items-center bg-base-200 rounded-xl p-4 mb-4">
+        <div class="flex items-center">
+          <div class="mr-3">
+            <%= svg_icon('writing_sign', class: 'w-10 h-10') %>
+          </div>
+          <div dir="auto">
+            <p class="text-lg font-bold mb-1"><%= @submitter.submission.template.name %></p>
+            <p class="text-sm"><%= t('awaiting_completion_by_the_other_party') %></p>
+          </div>
+        </div>
+      </div>
+    </div>
+  </div>
+</div>
+<%= render 'shared/attribution', link_path: '/start', account: @submitter.account %>

config/locales/en.yml

@@ -24,6 +24,7 @@ en: &en
   you_have_been_invited_to_sign_the_name: 'You have been invited to sign the "%{name}".'
   alternatively_you_can_review_and_download_your_copy_using_the_link_below: "Alternatively, you can review and download your copy using the link below:"
   please_check_the_copy_of_your_name_in_the_email_attachments: 'Please check the copy of your "%{name}" in the email attachments.'
+  awaiting_completion_by_the_other_party: "Awaiting completion by the other party"
   review_and_sign: Review and Sign
   review_and_submit: Review and Submit
   please_contact_us_by_replying_to_this_email_if_you_didn_t_request_this: "Please contact us by replying to this email if you have any questions."

lib/submitters.rb

@@ -102,4 +102,14 @@ module Submitters
       SendSubmitterInvitationEmailJob.perform_async('submitter_id' => submitter.id)
     end
   end
+
+  def current_submitter_order?(submitter)
+    submitter_items = submitter.submission.template_submitters || submitter.submission.template.submitters
+
+    before_items = submitter_items[0...(submitter_items.find_index { |e| e['uuid'] == submitter.uuid })]
+
+    before_items.reduce(true) do |acc, item|
+      acc && submitter.submission.submitters.find { |e| e.uuid == item['uuid'] }&.completed_at?
+    end
+  end
 end