feat: expose files storage health detail

internal/storage/minio.go

@@ -66,6 +66,20 @@ func (s *Storage) EnsureBucket(ctx context.Context) error {
 	return s.client.MakeBucket(ctx, s.cfg.Bucket, minio.MakeBucketOptions{})
 }
 
+func (s *Storage) Check(ctx context.Context) error {
+	if !s.Configured() {
+		return errors.New("storage not configured")
+	}
+	exists, err := s.client.BucketExists(ctx, s.cfg.Bucket)
+	if err != nil {
+		return fmt.Errorf("check bucket: %w", err)
+	}
+	if !exists {
+		return fmt.Errorf("bucket %q does not exist", s.cfg.Bucket)
+	}
+	return nil
+}
+
 func GenerateKey(ownerID, filename string) string {
 	ext := strings.ToLower(strings.TrimPrefix(filepath.Ext(filename), "."))
 	if !AllowedExtension(ext) {