Only show spark wallet link if lightning is enabled

main.go

@@ -60,6 +60,7 @@ type TemplateData struct {
   Features []InstallationInfoFeature  `json:"features"`
   Containers []InstallationInfoContainer  `json:"containers"`
   ForwardedPrefix string
+  FeatureByName map[string]bool
 }
 
 var auth *cnAuth.CnAuth
@@ -142,6 +143,12 @@ func  getInstallatioInfo() (*TemplateData,error) {
     return nil,err
   }
 
+  // map features to FeatureByName
+  installationInfo.FeatureByName = make( map[string]bool, 0 )
+  for f := 0 ; f< len(installationInfo.Features); f++ {
+    installationInfo.FeatureByName[installationInfo.Features[f].Name] = installationInfo.Features[f].Working
+  }
+
   log.Info("getInstallatioInfo: json done")
 
   return installationInfo,nil

templates/index.html

@@ -61,7 +61,9 @@
       <ul>
         <li><a href="config.7z">Download your Cyphernode <b>configurations</b>, can be used for another Cyphernode deployment</a></li>
         <li><a href="certs.7z">Download Client <b>API ID's and keys</b>, needed in your client apps</a></li>
-        <li><a href="/sparkwallet">Your Lightning Network Wallet (Spark Wallet)</a> <b>if LN installed during setup</b></li>
+        {{if index .FeatureByName "lightning" }}
+        <li><a href="/sparkwallet">Your Lightning Network Wallet (Spark Wallet)</a></li>
+        {{end}}
       </ul>
   </div>
 </section>