"istio.io/api/label"
	"istio.io/istio/istioctl/pkg/util"
)

func GetRevisionWebhooks(ctx context.Context, client kubernetes.Interface) ([]admitv1.MutatingWebhookConfiguration, error) {
	webhooks, err := client.AdmissionregistrationV1().MutatingWebhookConfigurations().List(ctx, metav1.ListOptions{
		LabelSelector: label.IoIstioRev.Name,
	})
	if err != nil {
		return nil, err
	}
	return webhooks.Items, nil
}

	if revision == "" {
		revision = "default"
	}
	whcList, err := client.Kube().AdmissionregistrationV1().MutatingWebhookConfigurations().List(context.TODO(),
		metav1.ListOptions{LabelSelector: fmt.Sprintf("%s=%s", label.IoIstioRev.Name, revision)})
	if err != nil {
		return e, fmt.Errorf("could not find valid mutatingWebhookConfiguration %q from cluster %v",
			whcName, err)
	}
	if whcList != nil && len(whcList.Items) != 0 {

				Items: []admitv1.MutatingWebhookConfiguration{
					{
						ObjectMeta: metav1.ObjectMeta{
							Name:   "istio-revision-tag-wrong",
							Labels: map[string]string{label.IoIstioTag.Name: "wrong"},
						},
					},
				},
			},
			webhooksAfter: admitv1.MutatingWebhookConfigurationList{
				Items: []admitv1.MutatingWebhookConfiguration{
					{
						ObjectMeta: metav1.ObjectMeta{

	}

	return revisions, nil
}

func Webhooks(ctx context.Context, client kube.CLIClient) ([]admitv1.MutatingWebhookConfiguration, error) {
	hooks, err := client.Kube().AdmissionregistrationV1().MutatingWebhookConfigurations().List(ctx, metav1.ListOptions{})
	if err != nil {
		return []admitv1.MutatingWebhookConfiguration{}, err
	}
	return hooks.Items, nil
}

func renderWithDefault(s, def string) string {
	if s != "" {

		}
	}
	return w.Flush()
}

func getInjector(namespace *corev1.Namespace, hooks []admitv1.MutatingWebhookConfiguration) *admitv1.MutatingWebhookConfiguration {
	// find matching hook
	for _, hook := range hooks {
		for _, webhook := range hook.Webhooks {
			nsSelector, err := metav1.LabelSelectorAsSelector(webhook.NamespaceSelector)

		}

		whObject, _, err := deserializer.Decode([]byte(webhookYAML), nil, &admitv1.MutatingWebhookConfiguration{})
		if err != nil {
			t.Fatalf("could not parse webhook from generated YAML: %s", webhookYAML)
		}
		wh := whObject.(*admitv1.MutatingWebhookConfiguration)

		// expect both namespace.sidecar-injector.istio.io and object.sidecar-injector.istio.io webhooks

}

type xdsAddr struct {
	gcpProject, host, istiod string
}

func getXdsAddressFromWebhooks(client kube.CLIClient) (*xdsAddr, error) {
	webhooks, err := client.Kube().AdmissionregistrationV1().MutatingWebhookConfigurations().List(context.Background(), metav1.ListOptions{
		LabelSelector: fmt.Sprintf("%s=%s,!%s", label.IoIstioRev.Name, client.Revision(), label.IoIstioTag.Name),
	})
	if err != nil {
		return nil, err
	}

	if err != nil {
		return fmt.Errorf("failed to retrieve revision tags: %v", err)
	}
	if len(tagWebhooks) == 0 {
		fmt.Fprintf(writer, "No Istio revision tag MutatingWebhookConfigurations to list\n")
		return nil
	}
	rawTags := map[uniqTag]tagDescription{}
	for _, wh := range tagWebhooks {
		tagName := GetWebhookTagName(wh)
		tagRevision, err := GetWebhookRevision(wh)

		},
		{
			namespace: istioNamespace,
			version:   "v1",
			resource:  "configmaps",
		},
		{
			group:    "admissionregistration.k8s.io",
			version:  "v1",
			resource: "mutatingwebhookconfigurations",
		},
		{
			group:    "admissionregistration.k8s.io",
			version:  "v1",
			resource: "validatingwebhookconfigurations",
		},
	}
	msgs := diag.Messages{}
	for _, r := range Resources {

	for _, mf := range mfs {
		for _, m := range mf.Manifests {
			if m.GetKind() == "MutatingWebhookConfiguration" && strings.HasPrefix(m.GetName(), "istio-revision-tag-") {
				tagWebhookYaml = m.Content
				break
			}
		}
	}
	if tagWebhookYaml == "" {
		return "", fmt.Errorf("could not find MutatingWebhookConfiguration in manifests")
	}

	scheme := runtime.NewScheme()