[#2180] Expose migrated types PJ as legacy types PJ in procedure API

app/serializers/procedure_serializer.rb

@@ -16,7 +16,7 @@ class ProcedureSerializer < ActiveModel::Serializer
   has_one :geographic_information, serializer: ModuleApiCartoSerializer
   has_many :types_de_champ, serializer: TypeDeChampSerializer
   has_many :types_de_champ_private, serializer: TypeDeChampSerializer
-  has_many :types_de_piece_justificative, serializer: TypeDePieceJustificativeSerializer
+  has_many :types_de_piece_justificative
 
   def archived_at
     object.archived_at&.in_time_zone('UTC')
@@ -43,4 +43,9 @@ class ProcedureSerializer < ActiveModel::Serializer
       ModuleAPICarto.new(procedure: object)
     end
   end
+
+  def types_de_piece_justificative
+    ActiveModelSerializers::SerializableResource.new(object.types_de_piece_justificative).serializable_hash +
+      PiecesJustificativesService.serialize_types_de_champ_as_type_pj(object)
+  end
 end

app/services/pieces_justificatives_service.rb

@@ -67,4 +67,21 @@ class PiecesJustificativesService
       []
     end
   end
+
+  def self.serialize_types_de_champ_as_type_pj(procedure)
+    tdcs = procedure.types_de_champ.select { |type_champ| type_champ.old_pj.present? }
+    tdcs.map.with_index do |type_champ, order_place|
+      description = type_champ.description
+      if /^(?<original_description>.*?)(?:[\r\n]+)Récupérer le formulaire vierge pour mon dossier : (?<lien_demarche>http.*)$/m =~ description
+        description = original_description
+      end
+      {
+        id: type_champ.old_pj[:stable_id],
+        libelle: type_champ.libelle,
+        description: description,
+        order_place: order_place,
+        lien_demarche: lien_demarche
+      }
+    end
+  end
 end