fix(sva): add sva/svr decision date tag for relevant template emails

Closes #10033

app/models/concerns/mail_template_concern.rb

@@ -50,6 +50,6 @@ module MailTemplateConcern
   end
 
   def dossier_tags
-    TagsSubstitutionConcern::DOSSIER_TAGS + TagsSubstitutionConcern::DOSSIER_TAGS_FOR_MAIL
+    super + TagsSubstitutionConcern::DOSSIER_TAGS_FOR_MAIL
   end
 end

app/models/concerns/tags_substitution_concern.rb

@@ -158,6 +158,14 @@ module TagsSubstitutionConcern
     }
   ]
 
+  DOSSIER_SVA_SVR_DECISION_DATE_TAG = {
+    id: 'dossier_sva_svr_decision_on',
+    libelle: 'date prévisionnelle SVA/SVR',
+    description: 'Date prévisionnelle de décision automatique par le SVA/SVR',
+    lambda: -> (d) { format_date(d.sva_svr_decision_on) },
+    available_for_states: Dossier.states.fetch(:en_instruction)
+  }
+
   INDIVIDUAL_TAGS = [
     {
       id: 'individual_gender',
@@ -335,7 +343,13 @@ module TagsSubstitutionConcern
 
   def dossier_tags
     # Overridden by MailTemplateConcern
-    DOSSIER_TAGS
+    DOSSIER_TAGS + contextual_dossier_tags
+  end
+
+  def contextual_dossier_tags
+    tags = []
+    tags << DOSSIER_SVA_SVR_DECISION_DATE_TAG if respond_to?(:procedure) && procedure.sva_svr_enabled?
+    tags
   end
 
   def tags_for_dossier_state(tags)

spec/models/concerns/mail_template_concern_spec.rb

@@ -141,6 +141,14 @@ describe MailTemplateConcern do
       let(:mail) { create(:without_continuation_mail, procedure: procedure) }
       it_behaves_like 'inserting the --lien document justificatif-- tag'
     end
+
+    context 'sva/svr' do
+      let(:procedure) { create(:procedure, :sva) }
+      let(:received_mail) { create(:received_mail, procedure:) }
+      it "treats date de passage en instruction as a tag" do
+        expect(received_mail.tags).to include(include({ libelle: 'date prévisionnelle SVA/SVR' }))
+      end
+    end
   end
 
   describe '#replace_tags' do

spec/models/concerns/tags_substitution_concern_spec.rb

@@ -413,6 +413,20 @@ describe TagsSubstitutionConcern, type: :model do
       end
     end
 
+    context "with date decision sva/svr" do
+      let(:template) { '--date prévisionnelle SVA/SVR--' }
+      let(:procedure) { create(:procedure, :published, :sva) }
+      let(:state) { dossier.state }
+
+      before do
+        dossier.passer_en_construction!
+        dossier.process_sva_svr!
+        dossier.update(sva_svr_decision_on: Date.parse("2024-09-20"))
+      end
+
+      it { is_expected.to eq('20/09/2024') }
+    end
+
     context "when the template has a libellé démarche tag" do
       let(:template) { 'body --libellé démarche--' }