send metrics when connecting to the websocket

src/main/java/xyz/mcutils/backend/websocket/MetricsWebSocketHandler.java

@@ -22,26 +22,39 @@ public class MetricsWebSocketHandler extends TextWebSocketHandler {
     private final long interval = TimeUnit.SECONDS.toMillis(5);
     public final List<WebSocketSession> sessions = new ArrayList<>();
 
+    private final MetricService metricService;
+
     public MetricsWebSocketHandler(MetricService metricService) {
+        this.metricService = metricService;
         Timer.scheduleRepeating(() -> {
+            for (WebSocketSession session : sessions) {
+                sendMetrics(session);
+            }
+        }, interval, interval);
+    }
+
+    /**
+     * Sends the metrics to the client.
+     *
+     * @param session the session to send the metrics to
+     */
+    private void sendMetrics(WebSocketSession session) {
         try {
             WebsocketMetrics metrics = new WebsocketMetrics(Map.of(
                     "totalRequests", metricService.getMetric(TotalRequestsMetric.class).getValue())
             );
 
-                for (WebSocketSession session : sessions) {
             session.sendMessage(new TextMessage(Main.GSON.toJson(metrics)));
-                }
         } catch (Exception e) {
             log.error("An error occurred while sending metrics to the client", e);
         }
-        }, interval, interval);
     }
 
     @Override
     public void afterConnectionEstablished(WebSocketSession session) {
         log.info("WebSocket connection established with session id: {}", session.getId());
 
+        sendMetrics(session);
         sessions.add(session);
     }