fix: use apiVersion to disambiguate CRDs with same kind (#504)

When multiple CRDs share the same kind but different API groups
(e.g. Traefik's Middleware under traefik.io and traefik.containo.us),
the dashboard failed to look up the correct resource. Thread apiVersion
through the resource fetch chain and use group-qualified kind
(e.g. Widget.new.example.com) for kubectl lookups.

Closes #504

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/API/releases.ts

@@ -117,13 +117,18 @@ export function useGetResourceDescription(
   type: string,
   ns: string,
   name: string,
+  apiVersion?: string,
   options?: UseQueryOptions<string>
 ) {
+  const params = new URLSearchParams({ name, namespace: ns });
+  if (apiVersion) {
+    params.set("apiVersion", apiVersion);
+  }
   return useQuery<string>({
-    queryKey: ["describe", type, ns, name],
+    queryKey: ["describe", type, ns, name, apiVersion],
     queryFn: () =>
       apiService.fetchWithDefaults<string>(
-        `/api/k8s/${type}/describe?name=${name}&namespace=${ns}`,
+        `/api/k8s/${type}/describe?${params.toString()}`,
         {
           headers: { "Content-Type": "text/plain; charset=utf-8" },
         }

frontend/src/components/revision/RevisionResource.tsx

@@ -154,7 +154,8 @@ const DescribeResource = ({
   const { data, isLoading } = useGetResourceDescription(
     resource.kind,
     namespace,
-    name
+    name,
+    resource.apiVersion
   );
 
   const yamlFormattedData = useMemo(

pkg/dashboard/handlers/helmHandlers.go

@@ -159,7 +159,8 @@ func (h *HelmHandler) Resources(c *gin.Context) {
 			if ns == "" {
 				ns = c.Param("ns")
 			}
-			info, err := app.K8s.GetResourceInfo(obj.Kind, ns, obj.Name)
+			kind := utils.QualifiedKind(obj.Kind, obj.APIVersion)
+			info, err := app.K8s.GetResourceInfo(kind, ns, obj.Name)
 			if err != nil {
 				log.Warnf("Failed to get resource info for %s %s/%s: %+v", obj.Name, ns, obj.Name, err)
 				info = &v1.Carp{}

pkg/dashboard/handlers/kubeHandlers.go

@@ -47,7 +47,8 @@ func (h *KubeHandler) GetResourceInfo(c *gin.Context) {
 		return // sets error inside
 	}
 
-	res, err := app.K8s.GetResourceInfo(c.Param("kind"), qp.Namespace, qp.Name)
+	kind := utils.QualifiedKind(c.Param("kind"), qp.APIVersion)
+	res, err := app.K8s.GetResourceInfo(kind, qp.Namespace, qp.Name)
 	if errors.IsNotFound(err) {
 		res = &v12.Carp{Status: v12.CarpStatus{Phase: "NotFound", Message: err.Error()}}
 		//_ = c.AbortWithError(http.StatusNotFound, err)
@@ -160,7 +161,8 @@ func (h *KubeHandler) Describe(c *gin.Context) {
 		return // sets error inside
 	}
 
-	res, err := app.K8s.DescribeResource(c.Param("kind"), qp.Namespace, qp.Name)
+	kind := utils.QualifiedKind(c.Param("kind"), qp.APIVersion)
+	res, err := app.K8s.DescribeResource(kind, qp.Namespace, qp.Name)
 	if err != nil {
 		_ = c.AbortWithError(http.StatusInternalServerError, err)
 		return

pkg/dashboard/utils/utils.go

@@ -104,6 +104,7 @@ func RunCommand(cmd []string, env map[string]string) (string, error) {
 type QueryProps struct {
 	Namespace  string
 	Name       string
+	APIVersion string
 }
 
 func GetQueryProps(c *gin.Context) (*QueryProps, error) {
@@ -111,6 +112,7 @@ func GetQueryProps(c *gin.Context) (*QueryProps, error) {
 
 	qp.Namespace = c.Query("namespace")
 	qp.Name = c.Query("name")
+	qp.APIVersion = c.Query("apiVersion")
 	if qp.Name == "" {
 		return nil, errors.New("missing required query string parameter: name")
 	}
@@ -118,6 +120,24 @@ func GetQueryProps(c *gin.Context) (*QueryProps, error) {
 	return &qp, nil
 }
 
+// QualifiedKind returns a group-qualified kind (e.g. "Widget.new.example.com")
+// when apiVersion contains a group, allowing kubectl to disambiguate CRDs
+// that share the same kind across different API groups.
+func QualifiedKind(kind string, apiVersion string) string {
+	if apiVersion == "" {
+		return kind
+	}
+	group := apiVersion
+	if idx := strings.Index(apiVersion, "/"); idx >= 0 {
+		group = apiVersion[:idx]
+	}
+	// Core API group (e.g. "v1") has no group prefix
+	if !strings.Contains(group, ".") {
+		return kind
+	}
+	return kind + "." + group
+}
+
 func EnvAsBool(envKey string, envDef bool) bool {
 	validSettableValues := []string{"false", "true", "0", "1"}
 	envValue := os.Getenv(envKey)

pkg/dashboard/utils/utils_test.go

@@ -108,6 +108,30 @@ func TestChartAndVersion(t *testing.T) {
 	}
 }
 
+func TestQualifiedKind(t *testing.T) {
+	tests := []struct {
+		kind       string
+		apiVersion string
+		want       string
+	}{
+		{"Widget", "new.example.com/v1alpha1", "Widget.new.example.com"},
+		{"Widget", "old.example.com/v1alpha1", "Widget.old.example.com"},
+		{"Deployment", "apps/v1", "Deployment"},
+		{"ConfigMap", "v1", "ConfigMap"},
+		{"ConfigMap", "", "ConfigMap"},
+		{"Middleware", "traefik.io/v1alpha1", "Middleware.traefik.io"},
+		{"Middleware", "traefik.containo.us/v1alpha1", "Middleware.traefik.containo.us"},
+	}
+	for _, tt := range tests {
+		t.Run(tt.kind+"/"+tt.apiVersion, func(t *testing.T) {
+			got := QualifiedKind(tt.kind, tt.apiVersion)
+			if got != tt.want {
+				t.Errorf("QualifiedKind(%q, %q) = %q, want %q", tt.kind, tt.apiVersion, got, tt.want)
+			}
+		})
+	}
+}
+
 func TestEnvAsBool(t *testing.T) {
 	// value: "true" | "1", default: false -> expect true
 	t.Setenv("TEST", "true")