affiche evolution temps de traitement

app/controllers/instructeurs/procedures_controller.rb

@@ -210,6 +210,7 @@ module Instructeurs
       @dossiers_funnel = @procedure.stats_dossiers_funnel
       @termines_states = @procedure.stats_termines_states
       @termines_by_week = @procedure.stats_termines_by_week
+      @usual_traitement_time_by_month = @procedure.usual_traitement_time_by_month_in_days
     end
 
     private

app/controllers/users/statistiques_controller.rb

@@ -5,6 +5,7 @@ module Users
       return procedure_not_found if @procedure.blank? || @procedure.brouillon?
 
       @usual_traitement_time = @procedure.stats_usual_traitement_time
+      @usual_traitement_time_by_month = @procedure.stats_usual_traitement_time_by_month_in_days
       @dossiers_funnel = @procedure.stats_dossiers_funnel
       @termines_states = @procedure.stats_termines_states
       @termines_by_week = @procedure.stats_termines_by_week

app/models/concerns/procedure_stats_concern.rb

@@ -7,6 +7,12 @@ module ProcedureStatsConcern
     end
   end
 
+  def stats_usual_traitement_time_by_month_in_days
+    Rails.cache.fetch("#{cache_key_with_version}/stats_usual_traitement_time_by_month_in_days", expires_in: 12.hours) do
+      usual_traitement_time_by_month_in_days
+    end
+  end
+
   def stats_dossiers_funnel
     Rails.cache.fetch("#{cache_key_with_version}/stats_dossiers_funnel", expires_in: 12.hours) do
       [

app/models/procedure.rb

@@ -582,6 +582,37 @@ class Procedure < ApplicationRecord
     end
   end
 
+  def usual_traitement_time_by_month
+    first_processed_at = Traitement.includes(:dossier)
+      .where(dossier: self.dossiers)
+      .where.not('dossiers.en_construction_at' => nil, :processed_at => nil)
+      .order(:processed_at)
+      .pick(:processed_at)
+
+    return [] if first_processed_at.nil?
+    month_index = first_processed_at.at_end_of_month
+    month_range = []
+    while month_index <= Time.zone.now.at_end_of_month
+      month_range << month_index
+      month_index += 1.month
+    end
+
+    month_range.map do |month|
+      [I18n.l(month, format: "%B %Y"), compute_usual_traitement_time_for_month(month)]
+    end
+  end
+
+  def usual_traitement_time_by_month_in_days
+    usual_traitement_time_by_month.map do |month, time_in_seconds|
+      if time_in_seconds.present?
+        time_in_days = (time_in_seconds / 60.0 / 60.0 / 24.0).ceil
+      else
+        time_in_days = nil
+      end
+      [month, time_in_days]
+    end
+  end
+
   def populate_champ_stable_ids
     TypeDeChamp
       .joins(:revisions)

app/views/shared/procedures/_stats.html.haml

@@ -13,6 +13,14 @@
         %span.big-number-card-detail
           90% des demandes du mois dernier ont été traitées en moins de #{distance_of_time_in_words(@usual_traitement_time)}.
 
+  .stat-cards
+    .stat-card.stat-card-half.pull-left
+      %span.stat-card-title TEMPS DE TRAITEMENT
+      .chart-container
+        .chart
+          - colors = %w(#C3D9FF #0069CC #1C7EC9) # from _colors.scss
+          = column_chart @usual_traitement_time_by_month, ytitle: "Nb Jours"
+
   .stat-cards
     .stat-card.stat-card-half.pull-left
       %span.stat-card-title AVANCÉE DES DOSSIERS