feat(dossier): add methods to upsert champ values

app/models/concerns/dossier_champs_concern.rb

@@ -39,6 +39,46 @@ module DossierChampsConcern
     end
   end
 
+  def find_type_de_champ_by_stable_id(stable_id, scope = nil)
+    case scope
+    when :public
+      revision.types_de_champ.public_only
+    when :private
+      revision.types_de_champ.private_only
+    else
+      revision.types_de_champ
+    end.find_by!(stable_id:)
+  end
+
+  def champs_for_prefill(stable_ids)
+    revision
+      .types_de_champ
+      .filter { _1.stable_id.in?(stable_ids) }
+      .filter { !revision.child?(_1) }
+      .map { champ_for_update(_1, nil) }
+  end
+
+  def champ_for_update(type_de_champ, row_id)
+    champ, attributes = champ_with_attributes_for_update(type_de_champ, row_id)
+    champ.assign_attributes(attributes)
+    champ
+  end
+
+  def update_champs_attributes(attributes, scope)
+    # TODO: remove after one deploy
+    if attributes.present? && attributes.values.filter { _1.key?(:with_public_id) }.empty?
+      assign_attributes("champs_#{scope}_all_attributes".to_sym => attributes)
+      @champs_by_public_id = nil
+      return
+    end
+
+    champs_attributes = attributes.to_h.map do |public_id, attributes|
+      champ_attributes_by_public_id(public_id, attributes, scope)
+    end
+
+    assign_attributes(champs_attributes:)
+  end
+
   private
 
   def champs_by_public_id
@@ -53,4 +93,39 @@ module DossierChampsConcern
       champ
     end
   end
+
+  def champ_attributes_by_public_id(public_id, attributes, scope)
+    stable_id, row_id = public_id.split('-')
+    type_de_champ = find_type_de_champ_by_stable_id(stable_id, scope)
+    champ_with_attributes_for_update(type_de_champ, row_id).last.merge(attributes)
+  end
+
+  def champ_with_attributes_for_update(type_de_champ, row_id)
+    attributes = type_de_champ.params_for_champ
+    # TODO: Once we have the right index in place, we should change this to use `create_or_find_by` instead of `find_or_create_by`
+    champ = champs
+      .create_with(type_de_champ:, **attributes)
+      .find_or_create_by!(stable_id: type_de_champ.stable_id, row_id:)
+
+    attributes[:id] = champ.id
+
+    # Needed when a revision change the champ type in this case, we reset the champ data
+    if champ.type != attributes[:type]
+      attributes[:value] = nil
+      attributes[:value_json] = nil
+      attributes[:external_id] = nil
+      attributes[:data] = nil
+    end
+
+    parent = revision.parent_of(type_de_champ)
+    if parent.present?
+      attributes[:parent] = champs.find { _1.type_de_champ_id == parent.id }
+    else
+      attributes[:parent] = nil
+    end
+
+    @champs_by_public_id = nil
+
+    [champ, attributes]
+  end
 end

app/models/concerns/dossier_prefillable_concern.rb

@@ -13,8 +13,4 @@ module DossierPrefillableConcern
     assign_attributes(attributes)
     save(validate: false)
   end
-
-  def find_champs_by_stable_ids(stable_ids)
-    champs.joins(:type_de_champ).where(types_de_champ: { stable_id: stable_ids.compact.uniq })
-  end
 end