add breadcrumbs

internal/app/server.go

@@ -40,3 +40,11 @@ func (s *Server) GetProduct(ctx context.Context, req *crm.GetProductReq) (*crm.P
 	}
 	return &crm.ProductRsp{Product: product}, nil
 }
+
+func (s *Server) GetBreadcrumbs(ctx context.Context, req *crm.GetBreadcrumbsReq) (*crm.BreadcrumbsRsp, error) {
+	breadcrumbs, err := s.storage.GetBreadcrumbs(ctx, req.Id)
+	if err != nil {
+		return nil, err
+	}
+	return &crm.BreadcrumbsRsp{Categories: breadcrumbs}, nil
+}