modify concern

app/models/concerns/procedure_stats_concern.rb

@@ -27,4 +27,22 @@ module ProcedureStatsConcern
       ]
     end
   end
+
+  def stats_termines_by_week
+    Rails.cache.fetch("#{cache_key_with_version}/stats_termines_by_week", expires_in: 12.hours) do
+      now = Time.zone.now
+      chart_data = dossiers.joins(:traitements)
+        .state_termine
+        .where(traitements: { processed_at: (now.beginning_of_week - 6.months)..now.end_of_week })
+
+      dossier_state_values = chart_data.pluck(:state).sort.uniq
+
+      # rubocop:disable Style/HashTransformValues
+      dossier_state_values
+        .map do |state|
+          { name: state, data: chart_data.where(state: state).group_by_week { |dossier| dossier.traitements.first.processed_at }.map { |k, v| [k, v.count] }.to_h }
+          # rubocop:enable Style/HashTransformValues
+        end
+    end
+  end
 end