[#1946] Check if a dossier’s retention period has expired

app/models/dossier.rb

@@ -183,6 +183,16 @@ class Dossier < ApplicationRecord
     brouillon? || en_construction?
   end
 
+  def retention_end_date
+    if instruction_commencee?
+      en_instruction_at + procedure.duree_conservation_dossiers_dans_ds.months
+    end
+  end
+
+  def retention_expired?
+    instruction_commencee? && retention_end_date <= DateTime.now
+  end
+
   def text_summary
     if brouillon?
       parts = [

spec/models/dossier_spec.rb

@@ -1002,4 +1002,30 @@ describe Dossier do
       it { is_expected.to be false }
     end
   end
+
+  context "retention date" do
+    let(:procedure) { create(:procedure, duree_conservation_dossiers_dans_ds: 6) }
+    let(:uninstructed_dossier) { create(:dossier, :en_construction, procedure: procedure) }
+    let(:young_dossier) { create(:dossier, :en_instruction, en_instruction_at: DateTime.now, procedure: procedure) }
+    let(:just_expired_dossier) { create(:dossier, :en_instruction, en_instruction_at: 6.months.ago, procedure: procedure) }
+    let(:long_expired_dossier) { create(:dossier, :en_instruction, en_instruction_at: 1.year.ago, procedure: procedure) }
+    let(:modif_date) { DateTime.parse('01/01/2100') }
+
+    before { Timecop.freeze(modif_date) }
+    after { Timecop.return }
+
+    describe "#retention_end_date" do
+      it { expect(uninstructed_dossier.retention_end_date).to be_nil }
+      it { expect(young_dossier.retention_end_date).to eq(6.months.from_now) }
+      it { expect(just_expired_dossier.retention_end_date).to eq(DateTime.now) }
+      it { expect(long_expired_dossier.retention_end_date).to eq(6.months.ago) }
+    end
+
+    describe "#retention_expired?" do
+      it { expect(uninstructed_dossier).not_to be_retention_expired }
+      it { expect(young_dossier).not_to be_retention_expired }
+      it { expect(just_expired_dossier).to be_retention_expired }
+      it { expect(long_expired_dossier).to be_retention_expired }
+    end
+  end
 end