db(migration): add closing_reason and closing_details to procedure

app/models/procedure.rb

@@ -223,6 +223,11 @@ class Procedure < ApplicationRecord
     accepte:         'accepte'
   }
 
+  enum closing_reason: {
+    internal_procedure: 'internal_procedure',
+    other: 'other'
+  }
+
   scope :for_api_v2, -> {
     includes(:draft_revision, :published_revision, administrateurs: :user)
   }
@@ -260,6 +265,9 @@ class Procedure < ApplicationRecord
 
   validate :check_juridique, on: [:create, :publication]
 
+  # TO DO add validation after data backfill
+  # validates :replaced_by_id, presence: true, if: -> { closing_reason == self.closing_reasons.fetch(:internal_procedure) }
+
   validates :path, presence: true, format: { with: /\A[a-z0-9_\-]{3,200}\z/ }, uniqueness: { scope: [:path, :closed_at, :hidden_at, :unpublished_at], case_sensitive: false }
   validates :duree_conservation_dossiers_dans_ds, allow_nil: false,
                                                   numericality: {