Fix Paypal Payflow (#237)

gateways/paypalpayflow/paypalpayflow.go

@@ -3,7 +3,6 @@ package paypalpayflow
 import (
 	"fmt"
 	"io/ioutil"
-	"log"
 	"net/http"
 	"strings"
 
@@ -75,8 +74,9 @@ func (client *PaypalPayflowClient) sendRequest(request *Request) (*Response, *ht
 
 	req, err := http.NewRequest("POST", client.url, strings.NewReader(data))
 	if err != nil {
-		log.Fatal(err)
+		return nil, nil, err
 	}
+
 	req.Header.Add("User-Agent", common.UserAgent())
 	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
 

gateways/paypalpayflow/request_builder.go

@@ -77,12 +77,16 @@ func buildVoidParams(request *sleet.VoidRequest) *Request {
 }
 
 func buildRefundParams(request *sleet.RefundRequest) *Request {
-	amount := sleet.AmountToDecimalString(request.Amount)
+	var amount *string = nil
+	if request.Amount != nil {
+		res := sleet.AmountToDecimalString(request.Amount)
+		amount = &res
+	}
 	return &Request{
 		TrxType:    REFUND,
 		OriginalID: &request.TransactionReference,
 		Verbosity:  &defaultVerbosity,
 		Tender:     &defaultTender,
-		Amount:     &amount,
+		Amount:     amount,
 	}
 }