// HandleBuildDeletion deletes a build pod if the corresponding build has been deleted
func (bc *BuildDeleteController) HandleBuildDeletion(build *buildapi.Build) error {
	glog.V(4).Infof("Handling deletion of build %s", build.Name)
	if build.Spec.Strategy.JenkinsPipelineStrategy != nil {
		glog.V(4).Infof("Ignoring build with jenkins pipeline strategy")
		return nil
	}
	podName := buildapi.GetBuildPodName(build)
	pod, err := bc.PodManager.GetPod(build.Namespace, podName)
	if err != nil && !errors.IsNotFound(err) {
		glog.V(2).Infof("Failed to find pod with name %s for build %s in namespace %s due to error: %v", podName, build.Name, build.Namespace, err)
		return err
	}
	if pod == nil {
		glog.V(2).Infof("Did not find pod with name %s for build %s in namespace %s", podName, build.Name, build.Namespace)
		return nil
	}
	if buildName := buildapi.GetBuildName(pod); buildName != build.Name {
		glog.V(2).Infof("Not deleting pod %s/%s because the build label %s does not match the build name %s", pod.Namespace, podName, buildName, build.Name)
		return nil
	}
	err = bc.PodManager.DeletePod(build.Namespace, pod)
	if err != nil && !errors.IsNotFound(err) {
		glog.V(2).Infof("Failed to delete pod %s/%s for build %s due to error: %v", build.Namespace, podName, build.Name, err)
		return err
	}
	return nil
}

// List lists all Pods associated with a Build.
func (lw *buildPodDeleteLW) List(options kapi.ListOptions) (runtime.Object, error) {
	glog.V(5).Info("Checking for deleted build pods")
	buildList, err := lw.Client.Builds(kapi.NamespaceAll).List(options)
	if err != nil {
		glog.V(4).Infof("Failed to find any builds due to error %v", err)
		return nil, err
	}
	for _, build := range buildList.Items {
		glog.V(5).Infof("Found build %s/%s", build.Namespace, build.Name)
		if buildutil.IsBuildComplete(&build) {
			glog.V(5).Infof("Ignoring build %s/%s because it is complete", build.Namespace, build.Name)
			continue
		}
		if build.Spec.Strategy.JenkinsPipelineStrategy != nil {
			glog.V(5).Infof("Ignoring build %s/%s because it is a pipeline build", build.Namespace, build.Name)
			continue
		}
		pod, err := lw.KubeClient.Pods(build.Namespace).Get(buildapi.GetBuildPodName(&build))
		if err != nil {
			if !kerrors.IsNotFound(err) {
				glog.V(4).Infof("Error getting pod for build %s/%s: %v", build.Namespace, build.Name, err)
				return nil, err
			} else {
				pod = nil
			}
		} else {
			if buildName := buildapi.GetBuildName(pod); buildName != build.Name {
				pod = nil
			}
		}
		if pod == nil {
			deletedPod := &kapi.Pod{
				ObjectMeta: kapi.ObjectMeta{
					Name:      buildapi.GetBuildPodName(&build),
					Namespace: build.Namespace,
				},
			}
			glog.V(4).Infof("No build pod found for build %s/%s, sending delete event for build pod", build.Namespace, build.Name)
			err := lw.store.Delete(deletedPod)
			if err != nil {
				glog.V(4).Infof("Error queuing delete event: %v", err)
			}
		} else {
			glog.V(5).Infof("Found build pod %s/%s for build %s", pod.Namespace, pod.Name, build.Name)
		}
	}
	return &kapi.PodList{}, nil
}

// List returns an empty list but adds delete events to the store for all Builds that have been deleted but still have pods.
func (lw *buildDeleteLW) List(options kapi.ListOptions) (runtime.Object, error) {
	glog.V(5).Info("Checking for deleted builds")
	podList, err := listPods(lw.KubeClient)
	if err != nil {
		glog.V(4).Infof("Failed to find any pods due to error %v", err)
		return nil, err
	}

	for _, pod := range podList.Items {
		buildName := buildapi.GetBuildName(&pod)
		if len(buildName) == 0 {
			continue
		}
		glog.V(5).Infof("Found build pod %s/%s", pod.Namespace, pod.Name)

		build, err := lw.Client.Builds(pod.Namespace).Get(buildName)
		if err != nil && !kerrors.IsNotFound(err) {
			glog.V(4).Infof("Error getting build for pod %s/%s: %v", pod.Namespace, pod.Name, err)
			return nil, err
		}
		if err != nil && kerrors.IsNotFound(err) {
			build = nil

		}
		if build == nil {
			deletedBuild := &buildapi.Build{
				ObjectMeta: kapi.ObjectMeta{
					Name:      buildName,
					Namespace: pod.Namespace,
				},
			}
			glog.V(4).Infof("No build found for build pod %s/%s, deleting pod", pod.Namespace, pod.Name)
			err := lw.store.Delete(deletedBuild)
			if err != nil {
				glog.V(4).Infof("Error queuing delete event: %v", err)
			}
		} else {
			glog.V(5).Infof("Found build %s/%s for pod %s", build.Namespace, build.Name, pod.Name)
		}
	}
	return &buildapi.BuildList{}, nil
}