fix s3 thing status (openhab#14925)

Signed-off-by: Alexandr Salamatov <[email protected]>

Author: goopilot

bundles/org.openhab.binding.folderwatcher/src/main/java/org/openhab/binding/folderwatcher/internal/api/S3Actions.java

@@ -115,7 +115,7 @@ private List<String> listObjectsV2(String prefix, Map<String, String> headers, M
         List<String> returnList = new ArrayList<>();
 
         if (nameNodesList.getLength() == 0) {
-            throw new Exception("No files deceted in the bucket");
+            return returnList;
         }
 
         for (int i = 0; i < nameNodesList.getLength(); i++) {

bundles/org.openhab.binding.folderwatcher/src/main/java/org/openhab/binding/folderwatcher/internal/handler/S3BucketWatcherHandler.java

@@ -89,7 +89,6 @@ public void initialize() {
 
         if (refreshS3BucketInformation()) {
             if (config.pollIntervalS3 > 0) {
-                updateStatus(ThingStatus.ONLINE);
                 executionJob = scheduler.scheduleWithFixedDelay(this::refreshS3BucketInformation, config.pollIntervalS3,
                         config.pollIntervalS3, TimeUnit.SECONDS);
             } else {
@@ -104,6 +103,7 @@ private boolean refreshS3BucketInformation() {
         List<String> currentS3Listing = new ArrayList<>();
         try {
             currentS3Listing = s3.listBucket(config.s3Path);
+            updateStatus(ThingStatus.ONLINE);
             List<String> difS3Listing = new ArrayList<>(currentS3Listing);
             difS3Listing.removeAll(previousS3Listing);
             difS3Listing.forEach(file -> triggerChannel(CHANNEL_NEWFILE, file));