fix: initialize keys before starting ln backend

service/keys/keys.go

@@ -1,6 +1,8 @@
 package keys
 
 import (
+	"errors"
+
 	"github.com/getAlby/hub/config"
 	"github.com/getAlby/hub/logger"
 	"github.com/nbd-wtf/go-nostr"
@@ -81,6 +83,9 @@ func (keys *keys) GetNostrSecretKey() string {
 }
 
 func (keys *keys) DeriveKey(path []uint32) (*bip32.Key, error) {
+	if keys.appKey == nil {
+		return nil, errors.New("app key not set")
+	}
 	key := keys.appKey
 	for _, index := range path {
 		var err error

service/start.go

@@ -24,16 +24,10 @@ import (
 	"github.com/getAlby/hub/logger"
 )
 
-func (svc *service) startNostr(ctx context.Context, encryptionKey string) error {
+func (svc *service) startNostr(ctx context.Context) error {
 
 	relayUrl := svc.cfg.GetRelayUrl()
 
-	err := svc.keys.Init(svc.cfg, encryptionKey)
-	if err != nil {
-		logger.Logger.WithError(err).Error("Failed to init nostr keys")
-		return err
-	}
-
 	npub, err := nip19.EncodePublicKey(svc.keys.GetNostrPublicKey())
 	if err != nil {
 		logger.Logger.WithError(err).Error("Error converting nostr privkey to pubkey")
@@ -130,7 +124,14 @@ func (svc *service) StartApp(encryptionKey string) error {
 
 	ctx, cancelFn := context.WithCancel(svc.ctx)
 
-	err := svc.launchLNBackend(ctx, encryptionKey)
+	err := svc.keys.Init(svc.cfg, encryptionKey)
+	if err != nil {
+		logger.Logger.WithError(err).Error("Failed to init nostr keys")
+		cancelFn()
+		return err
+	}
+
+	err = svc.launchLNBackend(ctx, encryptionKey)
 	if err != nil {
 		logger.Logger.Errorf("Failed to launch LN backend: %v", err)
 		svc.eventPublisher.Publish(&events.Event{
@@ -140,7 +141,7 @@ func (svc *service) StartApp(encryptionKey string) error {
 		return err
 	}
 
-	err = svc.startNostr(ctx, encryptionKey)
+	err = svc.startNostr(ctx)
 	if err != nil {
 		cancelFn()
 		return err