// - this is because during add specifically, if CNI plugins have not finished executing,
// K8S may get a pod Add event without any IPs in the object, and the pod will later be updated with IPs.
//
// We always need the IPs, but this is fine because this AddPodToMesh can be called from the CNI plugin as well,
// which always has the firsthand info of the IPs, even before K8S does - so we pass them separately here because

	switch v := match.GetOnNoMatch().GetOnMatch().(type) {
	case *matcher.Matcher_OnMatch_Action:
		if v.Action.GetName() == name {
			// TODO this only makes sense in context of a chain... do we need a way to give it context
			return []string{"ANY"}, true
		}
	case *matcher.Matcher_OnMatch_Matcher:
		ms, f := recurse(name, v.Matcher)
		if !f {
			return []string{"NONE"}, true
		}
		return ms, true

}

// Setup iptables rules for HOST netnamespace. Ideally this should be an idempotent function.
// NOTE that this expects to be run from within the HOST network namespace!
//
// We need to do this specifically to be able to distinguish between traffic coming from different node-level processes
// via the nodeIP
// - kubelet (node-local healthchecks, which we do not capture)

	if len(template.cniNetworkConfig) > 0 {
		installLog.Infof("Using CNI config template from CNI_NETWORK_CONFIG environment variable.")
		return []byte(template.cniNetworkConfig), nil
	}

	return nil, fmt.Errorf("need CNI_NETWORK_CONFIG or CNI_NETWORK_CONFIG_FILE to be set")
}

func replaceCNIConfigVars(cniConfig []byte, vars cniConfigVars) []byte {
	cniConfigStr := string(cniConfig)

	Run(ctx context.Context)
	PodDeleted(ctx context.Context, uid string) error
	PodAdded(ctx context.Context, pod *v1.Pod, netns Netns) error
	Close() error
}

/*
To clean up stale ztunnels

	we may need to ztunnel to send its (uid, bootid / boot time) to us
	so that we can remove stale entries when the ztunnel pod is deleted

	err := netServer.DelPodFromMesh(ctx, pod)
	assert.NoError(t, err)
	assert.Equal(t, ztunnelServer.deletedPods.Load(), 1)
	// with delete iptables is not called, as there is no need to delete the iptables rules
	// from a pod that's gone from the cluster.
	assert.Equal(t, nlDeps.DelInpodMarkIPRuleCnt.Load(), 0)
	assert.Equal(t, nlDeps.DelLoopbackRoutesCnt.Load(), 0)

		// Pod deleted, nothing to do
		return nil
	}
	return c.ReconcilePod(pod)
}

func (c *Controller) ReconcilePod(pod *corev1.Pod) (err error) {
	if !c.matchesFilter(pod) {
		return // Skip, pod doesn't need repair
	}
	repairLog.Debugf("Reconciling pod %s", pod.Name)

	if c.cfg.RepairPods {
		return c.repairPod(pod)
	} else if c.cfg.DeletePods {
		return c.deleteBrokenPod(pod)
	} else if c.cfg.LabelPods {

				Force:        nil,
				FieldManager: "istioctl",
			})
			if err != nil {
				if errors.IsNotFound(err) {
					return fmt.Errorf("missing Kubernetes Gateway CRDs need to be installed before applying a waypoint: %s", err)
				}
				return err
			}
			if waitReady {
				startTime := time.Now()
				ticker := time.NewTicker(1 * time.Second)
				defer ticker.Stop()

	AmbientEnabled  bool       `json:"ambient_enabled"`
	Kubernetes      Kubernetes `json:"kubernetes"`
}

// K8sArgs is the valid CNI_ARGS used for Kubernetes
// The field names need to match exact keys in containerd args for unmarshalling
// https://github.com/containerd/containerd/blob/ced9b18c231a28990617bc0a4b8ce2e81ee2ffa1/pkg/cri/server/sandbox_run.go#L526-L532
type K8sArgs struct {
	types.CommonArgs

		if err != nil {
			installLog.Error("error watching node CNI config")
			return err
		}
		installLog.Info("Detected changes to the node-level CNI setup, checking to see if configs or binaries need redeploying")
		// We don't support (or want) to silently (re)deploy any binaries that were not in the initial "snapshot"
		// so we intentionally discard/do not update the list of installedBins on redeploys.