fix: enhance thumbnail generation by adding image repair logic and de…

…duplication path check

cmd/server/main.go

@@ -2870,10 +2870,6 @@ func generateThumbnail(originalPath, size string) error {
 
 	log.Debugf("Generating thumbnail for: %s with size: %s", originalPath, size)
 
-	if !conf.Thumbnails.Enabled {
-		return nil
-	}
-
 	// Check if the file is an image
 	if !isImageFile(originalPath) {
 		log.Infof("File %s is not an image. Skipping thumbnail generation.", originalPath)
@@ -2905,6 +2901,12 @@ func generateThumbnail(originalPath, size string) error {
 		return fmt.Errorf("error checking thumbnail existence: %v", err)
 	}
 
+	// Check if the original image is in the dedup directory
+	originalDedupPath := filepath.Join(conf.Deduplication.Directory, filepath.Base(originalPath))
+	if _, err := os.Stat(originalDedupPath); err == nil {
+		originalPath = originalDedupPath
+	}
+
 	// Check if ffmpeg is installed
 	if isFFmpegInstalled() {
 		// Use ffmpeg to generate the thumbnail
@@ -2920,11 +2922,25 @@ func generateThumbnail(originalPath, size string) error {
 		// Use Go internal imaging function to generate the thumbnail
 		err := generateThumbnailWithImaging(originalPath, thumbnailPath, width, height)
 		if err != nil {
-			if conf.Thumbnails.SkipOnFailure {
-				log.Warnf("Failed to generate thumbnail with imaging for %s, skipping: %v", originalPath, err)
-				return nil
+			// Attempt to repair the image if it appears corrupt
+			err = fixCorruptedImage(originalPath)
+			if err != nil {
+				log.Warnf("Failed to repair image %s: %v", originalPath, err)
+				if conf.Thumbnails.SkipOnFailure {
+					return nil
+				}
+				return fmt.Errorf("failed to repair image: %v", err)
+			}
+
+			// Retry generating the thumbnail after repair
+			err = generateThumbnailWithImaging(originalPath, thumbnailPath, width, height)
+			if err != nil {
+				if conf.Thumbnails.SkipOnFailure {
+					log.Warnf("Failed to generate thumbnail with imaging for %s, skipping: %v", originalPath, err)
+					return nil
+				}
+				return fmt.Errorf("failed to generate thumbnail with imaging: %v", err)
 			}
-			return fmt.Errorf("failed to generate thumbnail with imaging: %v", err)
 		}
 	}