synchronize documents generation

app/controllers/send_submission_email_controller.rb

@@ -17,8 +17,6 @@ class SendSubmissionEmailController < ApplicationController
         Submitter.find_by!(slug: params[:submitter_slug])
       end
 
-    Submissions::GenerateResultAttachments.call(@submitter) if @submitter.documents.blank?
-
     SubmitterMailer.documents_copy_email(@submitter).deliver_later!
 
     respond_to do |f|

app/controllers/start_form_controller.rb

@@ -13,7 +13,7 @@ class StartFormController < ApplicationController
 
   def update
     @submitter = Submitter.where(submission: @template.submissions.where(deleted_at: nil))
-                          .find_or_initialize_by(**submitter_params)
+                          .find_or_initialize_by(email: submitter_params[:email])
 
     if @submitter.completed_at?
       redirect_to start_form_completed_path(@template.slug, email: submitter_params[:email])
@@ -25,7 +25,7 @@ class StartFormController < ApplicationController
         ua: request.user_agent
       )
 
-      @submitter.build_submission(template: @template)
+      @submitter.submission ||= Submission.new(template: @template)
 
       if @submitter.save
         redirect_to submit_form_path(@submitter.slug)

app/controllers/submissions_download_controller.rb

@@ -6,7 +6,7 @@ class SubmissionsDownloadController < ApplicationController
   def index
     submitter = Submitter.find_by(slug: params[:submitter_slug])
 
-    Submissions::GenerateResultAttachments.call(submitter) if submitter.documents.blank?
+    Submissions::EnsureResultGenerated.call(submitter)
 
     urls =
       Submitters.select_attachments_for_download(submitter).map do |attachment|

app/controllers/submit_form_controller.rb

@@ -24,6 +24,8 @@ class SubmitFormController < ApplicationController
     submitter.save!
 
     if submitter.completed_at?
+      GenerateSubmitterResultAttachmentsJob.perform_later(submitter)
+
       submitter.submission.template.account.users.active.each do |user|
         SubmitterMailer.completed_email(submitter, user).deliver_later!
       end

app/jobs/application_job.rb

@@ -0,0 +1,4 @@
+# frozen_string_literal: true
+
+class ApplicationJob < ActiveJob::Base
+end

app/jobs/generate_submitter_result_attachments_job.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class GenerateSubmitterResultAttachmentsJob < ApplicationJob
+  def perform(submitter)
+    Submissions::EnsureResultGenerated.call(submitter)
+  end
+end

app/mailers/submitter_mailer.rb

@@ -21,6 +21,9 @@ class SubmitterMailer < ApplicationMailer
 
   def documents_copy_email(submitter)
     @submitter = submitter
+
+    Submissions::EnsureResultGenerated.call(@submitter)
+
     @documents = Submitters.select_attachments_for_download(submitter)
 
     @documents.each do |attachment|

app/models/document_generation_event.rb

@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+# == Schema Information
+#
+# Table name: document_generation_events
+#
+#  id           :bigint           not null, primary key
+#  event_name   :string           not null
+#  created_at   :datetime         not null
+#  updated_at   :datetime         not null
+#  submitter_id :bigint           not null
+#
+# Indexes
+#
+#  index_document_generation_events_on_submitter_id                 (submitter_id)
+#  index_document_generation_events_on_submitter_id_and_event_name  (submitter_id,event_name) UNIQUE WHERE ((event_name)::text = ANY ((ARRAY['start'::character varying, 'complete'::character varying])::text[]))
+#
+# Foreign Keys
+#
+#  fk_rails_...  (submitter_id => submitters.id)
+#
+class DocumentGenerationEvent < ApplicationRecord
+  belongs_to :submitter
+
+  enum :event_name, {
+    complete: 'complete',
+    fail: 'fail',
+    start: 'start',
+    retry: 'retry'
+  }, scope: false
+end

app/models/submitter.rb

@@ -39,6 +39,8 @@ class Submitter < ApplicationRecord
   has_many_attached :documents
   has_many_attached :attachments
 
+  has_many :document_generation_events, dependent: :destroy
+
   def status
     if completed_at?
       'completed'

app/views/start_form/show.html.erb

@@ -33,7 +33,7 @@
             <%= f.email_field :email, required: true, class: 'base-input', placeholder: 'Provide your email to start' %>
           </div>
           <div class="form-control">
-            <%= f.button button_title(title: 'Start'), class: 'base-button' %>
+            <%= f.button button_title(title: 'Start', disabled_with: 'Starting'), class: 'base-button' %>
           </div>
         <% end %>
       </div>