added client playlist highlight

src/main/java/com/museum/projection/service/ClientService.java

@@ -68,8 +68,8 @@ public class ClientService {
             }
         }
         currentTrack = controlService.getTitle(connectedClient);
-        if (currentTrack.equals("")) {
-            log.info("No title to parse, title equals empty string");
+        if (currentTrack == null || currentTrack.equals("")) {
+            log.info("No title to parse, title equals empty or null string");
             return;
         }
         String[] split = currentTrack.split("-");

src/main/resources/templates/fragments/client.html

@@ -27,7 +27,7 @@
                         <dt class="col-sm-3">Playlist</dt>
                         <ol>
                             <li th:if="${track.playlist.isEmpty()}">Unknown</li>
-                            <li th:text="${playTrack}" th:each="playTrack : ${track.playlist}" ></li>
+                            <li  th:classappend="${playTrack == track.displayTrack} ? font-weight-bolder : ''" th:text="${playTrack}" th:each="playTrack : ${track.playlist}" ></li>
                         </ol>
 
                     </div>