11923: add voucher to OC customer total report

config/locales/en.yml

@@ -3156,6 +3156,8 @@ See the %{link} to find out more about %{sitename}'s features and to start using
   report_header_transaction_fee: Transaction Fee (no tax)
   report_header_total_untaxable_admin: Total untaxable admin adjustments (no tax)
   report_header_total_taxable_admin: Total taxable admin adjustments (tax inclusive)
+  report_header_voucher_label: Voucher Label
+  report_header_voucher_amount: "Voucher Amount (%{currency_symbol})"
   report_line_cost_of_produce: Cost of produce
   report_line_line_items: line items
   report_header_last_completed_order_date: Last completed order date

lib/reporting/reports/orders_and_fulfillment/order_cycle_customer_totals.rb

@@ -29,6 +29,8 @@ module Reporting
             admin_handling_fees: proc { |_line_items| "" },
             ship_price: proc { |_line_items| "" },
             pay_fee_price: proc { |_line_items| "" },
+            voucher_label: proc { |_line_items| "" },
+            voucher_amount: proc { |_line_items| "" },
             total_price: proc { |_line_items| "" },
             paid: proc { |line_items| line_items.all? { |li| li.order.paid? } },
 
@@ -105,7 +107,7 @@ module Reporting
         def default_params
           super.merge(
             {
-              fields_to_hide: [:final_weight_volume]
+              fields_to_hide: %i[final_weight_volume voucher_label voucher_amount]
             }
           )
         end
@@ -129,6 +131,8 @@ module Reporting
             admin_handling_fees: order.admin_and_handling_total,
             ship_price: order.ship_total,
             pay_fee_price: order.payment_fee,
+            voucher_label: voucher_label(order),
+            voucher_amount: voucher_amount(order),
             total_price: order.total,
             paid: order.paid?,
             comments: order.special_instructions,
@@ -163,6 +167,23 @@ module Reporting
           user = line_items.first.order.user
           user&.customer_of(distributor)
         end
+
+        def voucher_label(order)
+          return '' unless voucher_applicable?(order)
+
+          voucher = order.voucher_adjustments.take.originator
+          voucher&.code.to_s # in case if we don't get the voucher, return ""
+        end
+
+        def voucher_amount(order)
+          return '' unless voucher_applicable?(order)
+
+          (order.total - order.pre_discount_total).abs
+        end
+
+        def voucher_applicable?(order)
+          order.voucher_adjustments.present?
+        end
       end
     end
   end