Backend support for the rest of the release

kefw2/kefw2.go

@@ -62,9 +62,18 @@ func (s *KEFSpeaker) UpdateInfo() (err error) {
 	if err != nil {
 		return err
 	}
-	s.getId()
-	s.getModelAndVersion()
-	s.GetMaxVolume()
+	err = s.getId()
+	if err != nil {
+		return fmt.Errorf("failed to get speaker IDs: %w", err)
+	}
+	err = s.getModelAndVersion()
+	if err != nil {
+		return fmt.Errorf("failed to get model and version information: %w", err)
+	}
+	_, err = s.GetMaxVolume() // Don't actually need the maxvol, but saving it to config.
+	if err != nil {
+		return fmt.Errorf("failed to get maxvol: %w", err)
+	}
 	return nil
 }
 
@@ -152,11 +161,20 @@ func (s KEFSpeaker) SetSource(source Source) error {
 	return s.setTypedValue(path, source)
 }
 
-func (s *KEFSpeaker) Source() (source Source, err error) {
-	src, err2 := JSONUnmarshalValue(s.getData("settings:/kef/play/physicalSource"))
+func (s *KEFSpeaker) Source() (Source, error) {
+	data, err := s.getData("settings:/kef/play/physicalSource")
+	src, err2 := JSONUnmarshalValue(data, err)
 	return src.(Source), err2
 }
 
+func (s *KEFSpeaker) CanControlPlayback() (bool, error) {
+	source, err := s.Source()
+	if err != nil {
+		return false, fmt.Errorf("failed getting speaker source: %w", err)
+	}
+	return (source != SourceWiFi || source != SourceBluetooth), nil
+}
+
 func (s *KEFSpeaker) IsPoweredOn() (bool, error) {
 	powerState, err := JSONUnmarshalValue(s.getData("settings:/kef/host/speakerStatus"))
 	if powerState == SpeakerStatusOn {