add code insee libelle for commune export

app/models/dossier.rb

@@ -883,8 +883,8 @@ class Dossier < ApplicationRecord
     # Get all the champs values for the types de champ in the final list.
     # Dossier might not have corresponding champ – display nil.
     types_de_champ.flat_map do |type_de_champ|
-      Array.wrap(values[type_de_champ.stable_id] || [nil]).map do |champ_value, index|
+      Array.wrap(values[type_de_champ.stable_id] || [nil]).map.with_index do |champ_value, index|
-        [type_de_champ.libelle, champ_value]
+        [type_de_champ.libelle_for_export(index), champ_value]
       end
     end
   end

app/models/type_de_champ.rb

@@ -61,7 +61,7 @@ class TypeDeChamp < ApplicationRecord
   has_many :revision_types_de_champ, class_name: 'ProcedureRevisionTypeDeChamp', dependent: :destroy, inverse_of: :type_de_champ
   has_many :revisions, through: :revision_types_de_champ
 
-  delegate :tags_for_template, to: :dynamic_type
+  delegate :tags_for_template, :libelle_for_export, to: :dynamic_type
 
   class WithIndifferentAccess
     def self.load(options)

app/models/types_de_champ/commune_type_de_champ.rb

@@ -1,2 +1,5 @@
 class TypesDeChamp::CommuneTypeDeChamp < TypesDeChamp::TypeDeChampBase
+  def libelle_for_export(index)
+    [libelle, "#{libelle} (Code insee)"][index]
+  end
 end

app/models/types_de_champ/type_de_champ_base.rb

@@ -21,6 +21,10 @@ class TypesDeChamp::TypeDeChampBase
     ]
   end
 
+  def libelle_for_export(index)
+    libelle
+  end
+
   def build_champ
     @type_de_champ.champ.build
   end

spec/models/types_de_champ/commune_type_de_champ_spec.rb

@@ -0,0 +1,6 @@
+describe TypesDeChamp::CommuneTypeDeChamp do
+  let(:subject) { create(:type_de_champ_communes, libelle: 'Ma commune') }
+
+  it { expect(subject.libelle_for_export(0)).to eq('Ma commune') }
+  it { expect(subject.libelle_for_export(1)).to eq('Ma commune (Code insee)') }
+end

spec/services/procedure_export_service_spec.rb

@@ -68,6 +68,7 @@ describe ProcedureExportService do
           "regions",
           "departements",
           "communes",
+          "communes (Code insee)",
           "engagement",
           "dossier_link",
           "piece_justificative",
@@ -154,6 +155,7 @@ describe ProcedureExportService do
           "regions",
           "departements",
           "communes",
+          "communes (Code insee)",
           "engagement",
           "dossier_link",
           "piece_justificative",
@@ -236,6 +238,7 @@ describe ProcedureExportService do
             "regions",
             "departements",
             "communes",
+            "communes (Code insee)",
             "engagement",
             "dossier_link",
             "piece_justificative",