From 18999bcbbda8b694595b6af2661fc29c08aa8f02 Mon Sep 17 00:00:00 2001
From: DanB <damb@cgrates.org>
Date: Tue, 19 Nov 2019 20:15:50 +0100
Subject: [PATCH] CDRs refundCDR method implementation

---
 engine/cdrs.go         | 15 +++++++++++++--
 engine/libeventcost.go |  6 ++++++
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/engine/cdrs.go b/engine/cdrs.go
index 57b77c1a5..aa73a0b6f 100644
--- a/engine/cdrs.go
+++ b/engine/cdrs.go
@@ -286,9 +286,20 @@ func (cdrS *CDRServer) rateCDRWithErr(cdr *CDRWithArgDispatcher) (ratedCDRs []*C
 	return
 }
 
+// refundCDR will refund the EventCost within the CDR
 func (cdrS *CDRServer) refundCDR(cdr *CDR) (err error) {
-
-	return
+	if !AccountableRequestTypes.HasField(cdr.RequestType) || cdr.CostDetails == nil {
+		return // non refundable
+	}
+	cd := cdr.CostDetails.AsRefundIncrements(cdr.ToR)
+	if cd == nil || len(cd.Increments) == 0 {
+		return
+	}
+	var acnt engine.Account
+	if err = cdrS.rals.Call(utils.ResponderRefundIncrements,
+		&engine.CallDescriptorWithArgDispatcher{CallDescriptor: cd}, &acnt); err != nil {
+		return
+	}
 }
 
 // chrgProcessEvent will process the CGREvent with ChargerS subsystem
diff --git a/engine/libeventcost.go b/engine/libeventcost.go
index 613bb0403..22bd28328 100644
--- a/engine/libeventcost.go
+++ b/engine/libeventcost.go
@@ -35,6 +35,12 @@ var NonMonetaryBalances = MapEvent{
 	utils.GENERIC: struct{}{},
 }
 
+var AccountableRequestTypes = MapEvent{
+	utils.MetaPrepaid:       struct{}{},
+	utils.MetaPostpaid:      struct{}{},
+	utils.MetaPseudoprepaid: struct{}{},
+}
+
 // ChargingInterval represents one interval out of Usage providing charging info
 // eg: PEAK vs OFFPEAK
 type ChargingInterval struct {