mailers: add deposit receipt to initiated_mail

See #6146

app/mailers/notification_mailer.rb

@@ -21,6 +21,7 @@ class NotificationMailer < ApplicationMailer
     @service = @dossier.procedure.service
     @logo_url = attach_logo(@dossier.procedure)
     @rendered_template = sanitize(@body)
+    attachments[@attachment[:filename]] = @attachment[:content] if @attachment.present?
 
     I18n.with_locale(@dossier.user_locale) do
       mail(subject: @subject, to: @email, template_name: 'send_notification')
@@ -62,6 +63,7 @@ class NotificationMailer < ApplicationMailer
         @subject = mail_template.subject_for_dossier(@dossier)
         @body = mail_template.body_for_dossier(@dossier)
         @actions = mail_template.actions_for_dossier(@dossier)
+        @attachment = mail_template.attachment_for_dossier(@dossier)
       end
     end
   end

app/models/concerns/mail_template_concern.rb

@@ -21,6 +21,10 @@ module MailTemplateConcern
     [MailTemplateConcern::Actions::SHOW, MailTemplateConcern::Actions::ASK_QUESTION]
   end
 
+  def attachment_for_dossier(dossier)
+    nil
+  end
+
   def update_rich_body
     self.rich_body = self.body
   end

app/models/mails/initiated_mail.rb

@@ -20,5 +20,24 @@ module Mails
     DISPLAYED_NAME = I18n.t('activerecord.models.mail.initiated_mail.proof_of_receipt')
     DEFAULT_SUBJECT = I18n.t('activerecord.models.mail.initiated_mail.default_subject', dossier_number: '--numéro du dossier--', procedure_libelle: '--libellé démarche--')
     DOSSIER_STATE = Dossier.states.fetch(:en_construction)
+
+    def attachment_for_dossier(dossier)
+      if procedure.feature_enabled?(:procedure_dossier_papertrail)
+        {
+          filename: I18n.t('users.dossiers.show.papertrail.filename'),
+          content: deposit_receipt_for_dossier(dossier)
+        }
+      end
+    end
+
+    private
+
+    def deposit_receipt_for_dossier(dossier)
+      ApplicationController.render(
+        template: 'users/dossiers/papertrail',
+        formats: [:pdf],
+        assigns: { dossier: dossier }
+      )
+    end
   end
 end

spec/mailers/notification_mailer_spec.rb

@@ -3,6 +3,31 @@ RSpec.describe NotificationMailer, type: :mailer do
   let(:user) { create(:user) }
   let(:procedure) { create(:simple_procedure) }
 
+  describe 'send_en_construction_notification' do
+    let(:dossier) { create(:dossier, :en_construction, :with_individual, :with_service, user: user, procedure: procedure) }
+    let(:email_template) { create(:initiated_mail, subject: 'Email subject', body: 'Your dossier was received. Thanks.') }
+
+    before do
+      dossier.procedure.initiated_mail = email_template
+    end
+
+    subject(:mail) { described_class.send_en_construction_notification(dossier) }
+
+    it 'renders the template' do
+      expect(mail.subject).to eq('Email subject')
+      expect((mail.html_part || mail).body).to include('Your dossier was received')
+    end
+
+    context 'when the deposit receipt feature is enabled' do
+      before { Flipper.enable(:procedure_dossier_papertrail, procedure) }
+      after { Flipper.disable(:procedure_dossier_papertrail, procedure) }
+
+      it 'attaches the deposit receipt' do
+        expect(mail.attachments.first.filename).to eq("attestation-de-depot.pdf")
+      end
+    end
+  end
+
   describe 'send_en_instruction_notification' do
     let(:dossier) { create(:dossier, :en_construction, :with_individual, :with_service, user: user, procedure: procedure) }
     let(:email_template) { create(:received_mail, subject: 'Email subject', body: 'Your dossier was processed. Thanks.') }