update LettingsLogCsvService to output codes only csv

app/models/lettings_log.rb

@@ -426,7 +426,9 @@ class LettingsLog < Log
   end
 
   delegate :service_name, :sensitive, :registered_under_care_act, :primary_client_group, :has_other_client_group, :secondary_client_group, :owning_organisation, :managing_organisation, :support_type, :intended_stay, :created_at, prefix: "scheme", to: :scheme, allow_nil: true
+  delegate :service_name_before_type_cast, :sensitive_before_type_cast, :registered_under_care_act_before_type_cast, :primary_client_group_before_type_cast, :has_other_client_group_before_type_cast, :secondary_client_group_before_type_cast, :owning_organisation_before_type_cast, :managing_organisation_before_type_cast, :support_type_before_type_cast, :intended_stay_before_type_cast, :created_at_before_type_cast, prefix: "scheme", to: :scheme, allow_nil: true
   delegate :scheme_type, to: :scheme, allow_nil: true
+  delegate :scheme_type_before_type_cast, to: :scheme, allow_nil: true
 
   def scheme_code
     scheme&.id ? "S#{scheme.id}" : nil
@@ -437,7 +439,9 @@ class LettingsLog < Log
   end
 
   delegate :postcode, :name, :units, :type_of_unit, :mobility_type, :startdate, prefix: "location", to: :location, allow_nil: true
+  delegate :postcode_before_type_cast, :name_before_type_cast, :units_before_type_cast, :type_of_unit_before_type_cast, :mobility_type_before_type_cast, :startdate_before_type_cast, prefix: "location", to: :location, allow_nil: true
   delegate :location_admin_district, to: :location, allow_nil: true
+  delegate :location_admin_district_before_type_cast, to: :location, allow_nil: true
 
   # This is not the location_code in the db, location.id is just called code in the UI
   def location_code
@@ -495,6 +499,10 @@ class LettingsLog < Log
     form.get_question("rent_type", self)&.label_from_value(rent_type)
   end
 
+  def lettings?
+    true
+  end
+
   def non_location_setup_questions_completed?
     [needstype, renewal, rent_type, startdate, owning_organisation_id, created_by_id].all?(&:present?)
   end

app/services/csv/lettings_log_csv_service.rb

@@ -21,21 +21,31 @@ module Csv
 
   private
 
-    def label_from_value(record, att)
+    def label_from_value(record, att, is_codes_only_export:)
       if %w[la prevloc].include? att
-        label_from_boolean_value(record.send(att))
+        record.send(att)
       elsif %w[mrcdate startdate voiddate].include? att
         record.send(att)&.to_formatted_s(:govuk_date)
+      elsif is_codes_only_export && (att.start_with?("location_", "scheme_"))
+        att = att + "_before_type_cast" unless %w[location_code scheme_code scheme_owning_organisation_name scheme_created_at location_startdate].include? att
+        value = record.send(att)
       else
-        record.form.get_question(att.remove("_label"), record)&.label_from_value(record.send(att.remove("_label"))) || label_from_boolean_value(record.send(att.remove("_label")))
+        att = att.remove("_label", "_detail") # a couple of csv column headers have suffixes for the user that are not reflected in the app domain
+        field_value = record.send(att)
+        answer_label = record.form
+                             .get_question(att, record)
+                             &.label_from_value(field_value)
+        if is_codes_only_export
+          field_value
+        else
+          answer_label || label_if_boolean_value(field_value) || field_value
+        end
       end
     end
 
-    def label_from_boolean_value(value)
+    def label_if_boolean_value(value)
       return "Yes" if value == true
       return "No" if value == false
-
-      value
     end
 
     def set_csv_attributes