feat: add ldk custom tlvs to metadata custom records (#445)

Author: rolznz

go.mod

@@ -10,7 +10,7 @@ require (
 	github.com/davrux/echo-logrus/v4 v4.0.3
 	github.com/elnosh/gonuts v0.1.1-0.20240602162005-49da741613e4
 	github.com/getAlby/glalby-go v0.0.0-20240416174357-e6e2faa2fbd8
-	github.com/getAlby/ldk-node-go v0.0.0-20240613043419-a3ae86f6a26d
+	github.com/getAlby/ldk-node-go v0.0.0-20240614062656-d4de573a1996
 	github.com/go-gormigrate/gormigrate/v2 v2.1.1
 	github.com/gorilla/sessions v1.2.2
 	github.com/labstack/echo-contrib v0.14.1

go.sum

@@ -188,8 +188,8 @@ github.com/fsnotify/fsnotify v1.5.4 h1:jRbGcIw6P2Meqdwuo0H1p6JVLbL5DHKAKlYndzMwV
 github.com/fsnotify/fsnotify v1.5.4/go.mod h1:OVB6XrOHzAwXMpEM7uPOzcehqUV2UqJxmVXmkdnm1bU=
 github.com/getAlby/glalby-go v0.0.0-20240416174357-e6e2faa2fbd8 h1:mJsdhUb8hmSSSLR2GQFw9BGtnJP7xmKB/XQxDt3DvAo=
 github.com/getAlby/glalby-go v0.0.0-20240416174357-e6e2faa2fbd8/go.mod h1:ViyJvjlvv0GCesTJ7mb3fBo4G+/qsujDAFN90xZ7a9U=
-github.com/getAlby/ldk-node-go v0.0.0-20240613043419-a3ae86f6a26d h1:pj+/wYZ3TFzJt2fGQaf7naAqWluR0HlzLGNFAiwoe3g=
-github.com/getAlby/ldk-node-go v0.0.0-20240613043419-a3ae86f6a26d/go.mod h1:8BRjtKcz8E0RyYTPEbMS8VIdgredcGSLne8vHDtcRLg=
+github.com/getAlby/ldk-node-go v0.0.0-20240614062656-d4de573a1996 h1:UULF8HX3z0kxgppzDX67oG/7t1Es+tpZogqtsYsguX0=
+github.com/getAlby/ldk-node-go v0.0.0-20240614062656-d4de573a1996/go.mod h1:8BRjtKcz8E0RyYTPEbMS8VIdgredcGSLne8vHDtcRLg=
 github.com/getsentry/raven-go v0.2.0 h1:no+xWJRb5ZI7eE8TWgIq1jLulQiIoLG0IfYxv5JYMGs=
 github.com/getsentry/raven-go v0.2.0/go.mod h1:KungGk8q33+aIAZUIVWZDr2OfAEBsO49PX4NzFV5kcQ=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=

lnclient/ldk/ldk.go

@@ -17,6 +17,8 @@ import (
 
 	"github.com/getAlby/ldk-node-go/ldk_node"
 	// "github.com/getAlby/nostr-wallet-connect/ldk_node"
+	b64 "encoding/base64"
+
 	decodepay "github.com/nbd-wtf/ln-decodepay"
 	"github.com/sirupsen/logrus"
 
@@ -964,6 +966,7 @@ func (ls *LDKService) ldkPaymentToTransaction(payment *ldk_node.PaymentDetails)
 	var settledAt *int64
 	preimage := ""
 	paymentHash := ""
+	metadata := map[string]interface{}{}
 
 	bolt11PaymentKind, isBolt11PaymentKind := payment.Kind.(ldk_node.PaymentKindBolt11)
 
@@ -998,10 +1001,8 @@ func (ls *LDKService) ldkPaymentToTransaction(payment *ldk_node.PaymentDetails)
 	spontaneousPaymentKind, isSpontaneousPaymentKind := payment.Kind.(ldk_node.PaymentKindSpontaneous)
 	if isSpontaneousPaymentKind {
 		// keysend payment
-		// currently no access to created at or the TLVs to get the description
-		// TODO: store these in NWC database
 		lastUpdate := int64(payment.LastUpdate)
-		// TODO: use proper created at time
+		// TODO: use proper created at time (currently no access to created time for keysend payments)
 		createdAt = lastUpdate
 		if payment.Status == ldk_node.PaymentStatusSucceeded {
 			settledAt = &lastUpdate
@@ -1010,6 +1011,11 @@ func (ls *LDKService) ldkPaymentToTransaction(payment *ldk_node.PaymentDetails)
 		if spontaneousPaymentKind.Preimage != nil {
 			preimage = *spontaneousPaymentKind.Preimage
 		}
+		customRecords := map[string]string{}
+		for _, tlv := range spontaneousPaymentKind.CustomTlvs {
+			customRecords[strconv.FormatUint(tlv.Type, 10)] = b64.StdEncoding.EncodeToString(tlv.Value)
+		}
+		metadata["custom_records"] = customRecords
 	}
 
 	var amount uint64 = 0
@@ -1034,6 +1040,7 @@ func (ls *LDKService) ldkPaymentToTransaction(payment *ldk_node.PaymentDetails)
 		Description:     description,
 		DescriptionHash: descriptionHash,
 		ExpiresAt:       expiresAt,
+		Metadata:        metadata,
 	}, nil
 }