fix(after_party): backfill children Champs without row_ids

Pendant l'after_party 20221215135522_backfill_row_id_on_champs.rake
qui crééait les row_id pour la première fois,
des dossiers ont été clonés et ont échappé à cette tâche.
Ils possèdent donc des champs répétables sans row_id.

Cette tâche vient compléter les row_id manquants
pour ces quelques malheureux champs.

Co-authored-by: Paul Chavard <github@paul.chavard.net>

lib/tasks/deployment/20230118102035_backfill_repetition_champ_without_row_id.rake

@@ -0,0 +1,32 @@
+namespace :after_party do
+  desc 'Deployment task: backfill_repetition_champ_without_row_id'
+  task backfill_repetition_champ_without_row_id: :environment do
+    puts "Running deploy task 'backfill_repetition_champ_without_row_id'"
+    # You may need to set a higher statement_timeout when invoking this task for this query
+    champs = Champ.where(row_id: nil).where.not(parent_id: nil)
+
+    progress = ProgressReport.new(champs.count)
+
+    row_ids = {}
+
+    champs.group_by { [_1.dossier_id, _1.stable_id] }.values.map { _1.sort_by(&:created_at) }.each do |champs_by_stable_id|
+      champs_by_stable_id.each_with_index do |champ, row_index|
+        key = [champ.dossier_id, champ.parent_id, row_index]
+
+        row_ids[key] ||= ULID.generate
+        row_id = row_ids[key]
+
+        champ.update!(row_id:)
+
+        progress.inc
+      end
+    end
+
+    progress.finish
+
+    # Update task as completed.  If you remove the line below, the task will
+    # run with every deploy (or every time you call after_party:run).
+    AfterParty::TaskRecord
+      .create version: AfterParty::TaskRecorder.new(__FILE__).timestamp
+  end
+end