Bind specific invoice when paid via Banklink / EveryPay

Fix styling issues

Move redundant logic to shared base

app/models/payment_orders/base.rb

@@ -26,6 +26,32 @@ module PaymentOrders
       transaction.save!
     end
 
+    def compose_or_find_transaction
+      transaction = BankTransaction.find_by(base_transaction_params)
+
+      # Transaction already autobinded (possibly) invalid invoice
+      if transaction.binded?
+        Rails.logger.info("Transaction #{transaction.id} is already binded")
+        Rails.logger.info('Creating new BankTransaction record.')
+
+        transaction = new_base_transaction
+      end
+
+      transaction
+    end
+
+    def new_base_transaction
+      BankTransaction.new(base_transaction_params)
+    end
+
+    def base_transaction_params
+      {
+        description: invoice.order,
+        currency: invoice.currency,
+        iban: invoice.seller_iban,
+      }
+    end
+
     def form_url
       ENV["payments_#{type}_url"]
     end