Add ability to create refunds

2 files changed, 19 insertions, 0 deletions

diff --git a/lib/super_good/solidus_taxjar/api.rb b/lib/super_good/solidus_taxjar/api.rb
index 61fecae..7309a64 100644
--- a/lib/super_good/solidus_taxjar/api.rb
+++ b/lib/super_good/solidus_taxjar/api.rb
@@ -32,6 +32,10 @@ module SuperGood
         taxjar_client.delete_order order.number
       end
 
+      def create_refund_for(reimbursement)
+        taxjar_client.create_refund APIParams.refund_params(reimbursement)
+      end
+
       private
 
       attr_reader :taxjar_client
diff --git a/lib/super_good/solidus_taxjar/api_params.rb b/lib/super_good/solidus_taxjar/api_params.rb
index f75713c..b848eee 100644
--- a/lib/super_good/solidus_taxjar/api_params.rb
+++ b/lib/super_good/solidus_taxjar/api_params.rb
@@ -33,6 +33,21 @@ module SuperGood
             )
         end
 
+        def refund_params(reimbursement)
+          additional_taxes = reimbursement.return_items.sum(&:additional_tax_total)
+
+          {}
+            .merge(order_address_params(reimbursement.order.tax_address))
+            .merge(
+              transaction_id: reimbursement.number,
+              transaction_reference_id: reimbursement.order.number,
+              transaction_date: reimbursement.order.completed_at.to_formatted_s(:iso8601),
+              amount: reimbursement.total - additional_taxes,
+              shipping: 0,
+              sales_tax: additional_taxes
+            )
+        end
+
         private
 
         def order_address_params(address)