add option to toggle single digital sign

app/controllers/account_configs_controller.rb

@@ -6,7 +6,8 @@ class AccountConfigsController < ApplicationController
 
   ALLOWED_KEYS = [
     AccountConfig::ALLOW_TYPED_SIGNATURE,
-    AccountConfig::FORCE_MFA
+    AccountConfig::FORCE_MFA,
+    AccountConfig::ESIGNING_PREFERENCE_KEY
   ].freeze
 
   def create

app/models/account_config.rb

@@ -29,6 +29,7 @@ class AccountConfig < ApplicationRecord
   ALLOW_TYPED_SIGNATURE = 'allow_typed_signature'
   SUBMITTER_REMAILERS = 'submitter_reminders'
   FORM_COMPLETED_BUTTON_KEY = 'form_completed_button'
+  ESIGNING_PREFERENCE_KEY = 'esigning_preference'
 
   DEFAULT_VALUES = {
     SUBMITTER_INVITATION_EMAIL_KEY => {

app/views/esign_settings/show.html.erb

@@ -121,7 +121,28 @@
             <%= f.button button_title(title: 'Save', disabled_with: 'Updating'), class: 'base-button' %>
           </div>
         <% end %>
+      </div>
+    <% end %>
+    <% if !Docuseal.multitenant? %>
+      <% account_config = AccountConfig.where(account: current_account, key: AccountConfig::ESIGNING_PREFERENCE_KEY).first_or_initialize(value: 'multiple') %>
+      <% if can?(:manage, account_config) %>
+        <div class="px-1 mt-8 max-w-xl">
+          <div class="flex justify-between items-end mb-4 mt-8">
+            <h2 class="text-3xl font-bold">Preferences</h2>
+          </div>
+          <% if can?(:manage, account_config) %>
+            <%= form_for account_config, url: account_configs_path, method: :post do |f| %>
+              <%= f.hidden_field :key %>
+              <div class="flex items-center justify-between py-2.5">
+                <span>
+                  Apply multiple PDF digital signatures in the document per each signer
+                </span>
+                <%= f.check_box :value, { class: 'toggle', checked: account_config.value == 'multiple', onchange: 'this.form.requestSubmit()' }, 'multiple', 'single' %>
+              </div>
+            <% end %>
           <% end %>
         </div>
+      <% end %>
+    <% end %>
   </div>
 </div>

lib/submissions/generate_audit_trail.rb

@@ -257,7 +257,7 @@ module Submissions
               if event.event_type.include?('sms') || event.event_type.include?('phone')
                 submitter.phone
               else
-                (submitter.name || submitter.email || submitter.phone)
+                submitter.name || submitter.email || submitter.phone
               end
             ]
           )

lib/submissions/generate_result_attachments.rb

@@ -11,7 +11,8 @@ module Submissions
                 end
 
     INFO_CREATOR = "#{Docuseal.product_name} (#{Docuseal::PRODUCT_URL})".freeze
-    SIGN_REASON = 'Signed by %<email>s with DocuSeal.co'
+    SIGN_REASON = 'Signed by %<name>s with DocuSeal.co'
+    SIGN_SIGNLE_REASON = 'Digitally signed with DocuSeal.co'
 
     TEXT_LEFT_MARGIN = 1
     TEXT_TOP_MARGIN = 1
@@ -200,7 +201,7 @@ module Submissions
         submitter.submission.template_schema.map do |item|
           pdf = pdfs_index[item['attachment_uuid']]
 
-          attachment = save_signed_pdf(pdf:, submitter:, pkcs:, tsa_url:,
+          attachment = save_pdf(pdf:, submitter:, pkcs:, tsa_url:,
                                 uuid: item['attachment_uuid'],
                                 name: item['name'])
 
@@ -217,7 +218,7 @@ module Submissions
         end
 
       images_pdf_result =
-        save_signed_pdf(
+        save_pdf(
           pdf: images_pdf,
           submitter:,
           tsa_url:,
@@ -230,13 +231,16 @@ module Submissions
     end
     # rubocop:enable Metrics
 
-    def save_signed_pdf(pdf:, submitter:, pkcs:, tsa_url:, uuid:, name:)
+    def save_pdf(pdf:, submitter:, pkcs:, tsa_url:, uuid:, name:)
       io = StringIO.new
 
       pdf.trailer.info[:Creator] = info_creator
 
+      sign_reason = fetch_sign_reason(submitter)
+
+      if sign_reason
         sign_params = {
-        reason: sign_reason(submitter.email),
+          reason: sign_reason,
           certificate: pkcs.certificate,
           key: pkcs.key,
           certificate_chain: pkcs.ca_certs || []
@@ -248,12 +252,13 @@ module Submissions
         end
 
         pdf.sign(io, **sign_params)
+      else
+        pdf.write(io, incremental: true)
+      end
 
       ActiveStorage::Attachment.create!(
         uuid:,
-        blob: ActiveStorage::Blob.create_and_upload!(
-          io: StringIO.new(io.string), filename: "#{name}.pdf"
-        ),
+        blob: ActiveStorage::Blob.create_and_upload!(io: StringIO.new(io.string), filename: "#{name}.pdf"),
         metadata: { sha256: Base64.urlsafe_encode64(Digest::SHA256.digest(io.string)) },
         name: 'documents',
         record: submitter
@@ -308,8 +313,27 @@ module Submissions
       pdf
     end
 
-    def sign_reason(email)
-      format(SIGN_REASON, email:)
+    def sign_reason(name)
+      format(SIGN_REASON, name:)
+    end
+
+    def single_sign_reason
+      SIGN_SIGNLE_REASON
+    end
+
+    def fetch_sign_reason(submitter)
+      reason_name = submitter.email || submitter.name || submitter.phone
+
+      return sign_reason(reason_name) if Docuseal.multitenant?
+
+      return sign_reason(reason_name) if AccountConfig.where(account: submitter.account,
+                                                             key: AccountConfig::ESIGNING_PREFERENCE_KEY)
+                                                      .first_or_initialize(value: 'multiple').value == 'multiple'
+
+      return single_sign_reason if !submitter.submission.submitters.exists?(completed_at: nil) &&
+                                   submitter.completed_at == submitter.submission.submitters.maximum(:completed_at)
+
+      nil
     end
 
     def info_creator