feat: add redirection to original image if resampled image is not available

server/api/image.go

@@ -88,6 +88,10 @@ func handleGetResampledImage(c fiber.Ctx) error {
 	if err != nil {
 		return err
 	}
+	if image == nil {
+		// No resampled image, redirect to original
+		return c.Redirect().To("/api/image/" + idStr)
+	}
 	contentType := http.DetectContentType(image)
 	c.Set("Content-Type", contentType)
 	c.Set("Cache-Control", "public, max-age=31536000")

server/service/image.go

@@ -173,12 +173,17 @@ func deleteImage(id uint) error {
 	return nil
 }
 
+// GetResampledImage returns a resampled version of the image if it exceeds the maximum pixel limit, otherwise returns nil.
 func GetResampledImage(id uint) ([]byte, error) {
 	i, err := dao.GetImageByID(id)
 	if err != nil {
 		return nil, err
 	}
 
+	if i.Width*i.Height <= resampledMaxPixels {
+		return nil, nil
+	}
+
 	data, err := getOrCreateResampledImage(i)
 	if err != nil {
 		log.Error("Error getting or creating resampled image:", err)