refactor validations

app/models/location_deactivation_period.rb

@@ -1,12 +1,33 @@
 class LocationDeactivationPeriodValidator < ActiveModel::Validator
   def validate(record)
     location = record.location
-
     recent_deactivation = location.location_deactivation_periods.deactivations_without_reactivation.first
-    if record.deactivation_date.blank? && recent_deactivation.nil? || recent_deactivation && record.reactivation_date.blank?
-      if record.deactivation_date_type.blank? && record.reactivation_date_type.blank?
+    if recent_deactivation.present?
+      validate_reactivation(record, recent_deactivation, location)
+    else
+      validate_deactivation(record, location)
+    end
+  end
+
+  def validate_reactivation(record, recent_deactivation, location)
+    if record.reactivation_date.blank?
+      if record.reactivation_date_type.blank?
+        record.errors.add(:reactivation_date_type, message: I18n.t("validations.location.toggle_date.not_selected"))
+      elsif record.reactivation_date_type == "other"
+        record.errors.add(:reactivation_date, message: I18n.t("validations.location.toggle_date.invalid"))
+      end
+    elsif !record.reactivation_date.between?(location.available_from, Time.zone.local(2200, 1, 1))
+      record.errors.add(:reactivation_date, message: I18n.t("validations.location.toggle_date.out_of_range", date: location.available_from.to_formatted_s(:govuk_date)))
+    elsif record.reactivation_date < recent_deactivation.deactivation_date
+      record.errors.add(:reactivation_date, message: I18n.t("validations.location.reactivation.before_deactivation", date: recent_deactivation.deactivation_date.to_formatted_s(:govuk_date)))
+    end
+  end
+
+  def validate_deactivation(record, location)
+    if record.deactivation_date.blank?
+      if record.deactivation_date_type.blank?
         record.errors.add(:deactivation_date_type, message: I18n.t("validations.location.toggle_date.not_selected"))
-      elsif record.deactivation_date_type == "other" || record.reactivation_date_type == "other"
+      elsif record.deactivation_date_type == "other"
         record.errors.add(:deactivation_date, message: I18n.t("validations.location.toggle_date.invalid"))
       end
     elsif location.location_deactivation_periods.any? { |period| period.reactivation_date.present? && record.deactivation_date.between?(period.deactivation_date, period.reactivation_date - 1.day) }
@@ -16,14 +37,6 @@ class LocationDeactivationPeriodValidator < ActiveModel::Validator
         record.errors.add(:deactivation_date, message: I18n.t("validations.location.toggle_date.out_of_range", date: location.available_from.to_formatted_s(:govuk_date)))
       end
     end
-
-    if recent_deactivation && record.reactivation_date.present?
-      if !record.reactivation_date.between?(location.available_from, Time.zone.local(2200, 1, 1))
-        record.errors.add(:reactivation_date, message: I18n.t("validations.location.toggle_date.out_of_range", date: location.available_from.to_formatted_s(:govuk_date)))
-      elsif record.reactivation_date < recent_deactivation.deactivation_date
-        record.errors.add(:reactivation_date, message: I18n.t("validations.location.reactivation.before_deactivation", date: recent_deactivation.deactivation_date.to_formatted_s(:govuk_date)))
-      end
-    end
   end
 end