[Fix #2494] Improve deletion warning text

app/helpers/procedure_helper.rb

@@ -21,4 +21,29 @@ module ProcedureHelper
     action = procedure.archivee? ? :reopen : :publish
     t(action, scope: [:modal, :publish, key])
   end
+
+  def dossiers_deletion_warning(procedure)
+    dossiers_count = procedure.dossiers.state_not_brouillon.count
+    brouillons_count = procedure.dossiers.state_brouillon.count
+    formatted_dossiers_count = nil
+    formatted_brouillons_count = nil
+
+    if dossiers_count > 0
+      formatted_dossiers_count = pluralize(dossiers_count, "dossier", "dossiers")
+    end
+
+    if brouillons_count > 0
+      formatted_brouillons_count = pluralize(brouillons_count, "brouillon", "brouillons")
+    end
+
+    formatted_combination = [formatted_dossiers_count, formatted_brouillons_count]
+      .compact
+      .join(" et ")
+
+    [
+      formatted_combination,
+      dossiers_count + brouillons_count == 1 ? "est rattaché" : "sont rattachés",
+      "à cette procédure, la suppression de cette procédure entrainera également leur suppression."
+    ].join(" ")
+  end
 end