fix bugs

Azaion.Dataset/DatasetExplorerEventHandler.cs

@@ -69,8 +69,10 @@ public class DatasetExplorerEventHandler(DatasetExplorer datasetExplorer, IGalle
         }
     }
 
-    public Task Handle(ImageCreatedEvent notification, CancellationToken cancellationToken)
+     public async Task Handle(ImageCreatedEvent imageCreatedEvent, CancellationToken cancellationToken)
     {
-        throw new NotImplementedException();
+        var (thumbnailDto, detections) = await galleryManager.CreateThumbnail(imageCreatedEvent.ImagePath, cancellationToken);
+        if (thumbnailDto != null && detections != null)
+            datasetExplorer.AddThumbnail(thumbnailDto, detections);
     }
 }

Azaion.Dataset/GalleryManager.cs

@@ -30,7 +30,7 @@ public class GalleryManager(
     private readonly AnnotationConfig _annotationConfig = annotationConfig.Value;
 
     private readonly string _thumbnailsCacheFile = Path.Combine(directoriesConfig.Value.ThumbnailsDirectory, Constants.THUMBNAILS_CACHE_FILE);
-    public event ThumbnailsUpdatedEventHandler ThumbnailsUpdate;
+    public event ThumbnailsUpdatedEventHandler? ThumbnailsUpdate;
 
 
     private readonly SemaphoreSlim _updateLock = new(1);
@@ -125,7 +125,7 @@ public class GalleryManager(
         await File.WriteAllTextAsync(_thumbnailsCacheFile, labelsCacheStr);
     }
 
-    public async Task<ThumbnailDto?> CreateThumbnail(string imgPath, CancellationToken cancellationToken = default)
+    public async Task<(ThumbnailDto? thumbnailDto, List<int>? classes)> CreateThumbnail(string imgPath, CancellationToken cancellationToken = default)
     {
         try
         {
@@ -149,7 +149,7 @@ public class GalleryManager(
             {
                 File.Delete(imgPath);
                 logger.LogInformation($"No labels found for image {imgName}! Image deleted!");
-                return null;
+                return (null, null);
             }
 
             var labels = (await YoloLabel.ReadFromFile(labelName, cancellationToken))
@@ -209,18 +209,19 @@ public class GalleryManager(
             var thumbnailName = Path.Combine(ThumbnailsDirectory.FullName, $"{Path.GetFileNameWithoutExtension(imgPath)}{Constants.THUMBNAIL_PREFIX}.jpg");
             bitmap.Save(thumbnailName, ImageFormat.Jpeg);
 
-            return new ThumbnailDto
+            var thumbnailDto = new ThumbnailDto
             {
                 ThumbnailPath = thumbnailName,
                 ImagePath = imgPath,
                 LabelPath = labelName,
                 ImageDate = File.GetCreationTimeUtc(imgPath)
             };
+            return (thumbnailDto, classes);
         }
         catch (Exception e)
         {
             logger.LogError(e, e.Message);
-            return null;
+            return (null, null);
         }
     }
 
@@ -241,12 +242,12 @@ public class GalleryManager(
 
 public interface IGalleryManager
 {
-    event ThumbnailsUpdatedEventHandler ThumbnailsUpdate;
+    event ThumbnailsUpdatedEventHandler? ThumbnailsUpdate;
     double ThumbnailsPercentage { get; set; }
     Task SaveLabelsCache();
     LabelInfo AddToCache(string imgPath, List<int> classes);
     ConcurrentDictionary<string, LabelInfo> LabelsCache { get; set; }
-    Task<ThumbnailDto?> CreateThumbnail(string imgPath, CancellationToken cancellationToken = default);
+    Task<(ThumbnailDto? thumbnailDto, List<int>? classes)> CreateThumbnail(string imgPath, CancellationToken cancellationToken = default);
     Task RefreshThumbnails();
     void ClearThumbnails();
 }