// CreatePetSetList creates paginated list of Pet Set model
// objects based on Kubernetes Pet Set objects array and related resources arrays.
func CreatePetSetList(petSets []apps.PetSet, pods []api.Pod, events []api.Event,
	dsQuery *dataselect.DataSelectQuery, heapsterClient *heapster.HeapsterClient) *PetSetList {

	petSetList := &PetSetList{
		PetSets:  make([]PetSet, 0),
		ListMeta: common.ListMeta{TotalItems: len(petSets)},
	}

	cachedResources := &dataselect.CachedResources{
		Pods: pods,
	}
	replicationControllerCells, metricPromises := dataselect.GenericDataSelectWithMetrics(petset.ToCells(petSets), dsQuery, cachedResources, heapsterClient)
	petSets = petset.FromCells(replicationControllerCells)

	for _, petSet := range petSets {
		matchingPods := common.FilterNamespacedPodsBySelector(pods, petSet.ObjectMeta.Namespace,
			petSet.Spec.Selector.MatchLabels)
		// TODO(floreks): Conversion should be omitted when client type will be updated
		podInfo := common.GetPodInfo(int32(petSet.Status.Replicas), int32(petSet.Spec.Replicas),
			matchingPods)
		podInfo.Warnings = event.GetPodsEventWarnings(events, matchingPods)

		petSetList.PetSets = append(petSetList.PetSets, ToPetSet(&petSet, &podInfo))
	}

	cumulativeMetrics, err := metricPromises.GetMetrics()
	petSetList.CumulativeMetrics = cumulativeMetrics
	if err != nil {
		petSetList.CumulativeMetrics = make([]metric.Metric, 0)
	}

	return petSetList
}

// CreateReplicaSetList creates paginated list of Replica Set model
// objects based on Kubernetes Replica Set objects array and related resources arrays.
func CreateReplicaSetList(replicaSets []extensions.ReplicaSet, pods []api.Pod,
	events []api.Event, dsQuery *dataselect.DataSelectQuery, heapsterClient *heapster.HeapsterClient) *ReplicaSetList {

	replicaSetList := &ReplicaSetList{
		ReplicaSets: make([]replicaset.ReplicaSet, 0),
		ListMeta:    common.ListMeta{TotalItems: len(replicaSets)},
	}

	cachedResources := &dataselect.CachedResources{
		Pods: pods,
	}
	replicationControllerCells, metricPromises := dataselect.GenericDataSelectWithMetrics(replicaset.ToCells(replicaSets), dsQuery, cachedResources, heapsterClient)
	replicaSets = replicaset.FromCells(replicationControllerCells)

	for _, replicaSet := range replicaSets {
		matchingPods := common.FilterNamespacedPodsBySelector(pods, replicaSet.ObjectMeta.Namespace,
			replicaSet.Spec.Selector.MatchLabels)
		podInfo := common.GetPodInfo(replicaSet.Status.Replicas,
			replicaSet.Spec.Replicas, matchingPods)
		podInfo.Warnings = event.GetPodsEventWarnings(events, matchingPods)

		replicaSetList.ReplicaSets = append(replicaSetList.ReplicaSets, replicaset.ToReplicaSet(&replicaSet, &podInfo))
	}

	cumulativeMetrics, err := metricPromises.GetMetrics()
	replicaSetList.CumulativeMetrics = cumulativeMetrics
	if err != nil {
		replicaSetList.CumulativeMetrics = make([]metric.Metric, 0)
	}

	return replicaSetList
}

// CreateJobList returns a list of all Job model objects in the cluster, based on all
// Kubernetes Job API objects.
func CreateJobList(jobs []batch.Job, pods []api.Pod, events []api.Event,
	dsQuery *dataselect.DataSelectQuery, heapsterClient *heapster.HeapsterClient) *JobList {

	jobList := &JobList{
		Jobs:     make([]Job, 0),
		ListMeta: common.ListMeta{TotalItems: len(jobs)},
	}

	cachedResources := &dataselect.CachedResources{
		Pods: pods,
	}
	replicationControllerCells, metricPromises := dataselect.GenericDataSelectWithMetrics(toCells(jobs), dsQuery, cachedResources, heapsterClient)
	jobs = fromCells(replicationControllerCells)

	for _, job := range jobs {
		var completions int32
		matchingPods := common.FilterNamespacedPodsBySelector(pods, job.ObjectMeta.Namespace,
			job.Spec.Selector.MatchLabels)
		if job.Spec.Completions != nil {
			completions = *job.Spec.Completions
		}
		podInfo := common.GetPodInfo(job.Status.Active, completions, matchingPods)
		podInfo.Warnings = event.GetPodsEventWarnings(events, matchingPods)

		jobList.Jobs = append(jobList.Jobs, ToJob(&job, &podInfo))
	}

	cumulativeMetrics, err := metricPromises.GetMetrics()
	jobList.CumulativeMetrics = cumulativeMetrics
	if err != nil {
		jobList.CumulativeMetrics = make([]metric.Metric, 0)
	}

	return jobList
}

// Returns simple info about pods(running, desired, failing, etc.) related to given pet set.
func getPetSetPodInfo(client *k8sClient.Client, petSet *apps.PetSet) (
	*common.PodInfo, error) {

	pods, err := getRawPetSetPods(client, petSet.Name, petSet.Namespace)
	if err != nil {
		return nil, err
	}

	podInfo := common.GetPodInfo(int32(petSet.Status.Replicas), int32(petSet.Spec.Replicas), pods)
	return &podInfo, nil
}

// Returns simple info about pods(running, desired, failing, etc.) related to given daemon set.
func getDaemonSetPodInfo(client k8sClient.Interface, daemonSet *extensions.DaemonSet) (
	*common.PodInfo, error) {

	pods, err := getRawDaemonSetPods(client, daemonSet.Name, daemonSet.Namespace)
	if err != nil {
		return nil, err
	}

	podInfo := common.GetPodInfo(daemonSet.Status.CurrentNumberScheduled,
		daemonSet.Status.DesiredNumberScheduled, pods)
	return &podInfo, nil
}

// Returns simple info about pods(running, desired, failing, etc.) related to given job.
func getJobPodInfo(client k8sClient.Interface, job *batch.Job) (*common.PodInfo, error) {
	labelSelector := labels.SelectorFromSet(job.Spec.Selector.MatchLabels)
	channels := &common.ResourceChannels{
		PodList: common.GetPodListChannelWithOptions(client, common.NewSameNamespaceQuery(
			job.Namespace),
			api.ListOptions{
				LabelSelector: labelSelector,
				FieldSelector: fields.Everything(),
			}, 1),
	}

	pods := <-channels.PodList.List
	if err := <-channels.PodList.Error; err != nil {
		return nil, err
	}

	podInfo := common.GetPodInfo(job.Status.Active, *job.Spec.Completions, pods.Items)
	return &podInfo, nil
}

// Returns simple info about pods(running, desired, failing, etc.) related to given replication
// controller.
func getReplicationControllerPodInfo(client k8sClient.Interface, rc *api.ReplicationController,
	namespace string) (*common.PodInfo, error) {

	labelSelector := labels.SelectorFromSet(rc.Spec.Selector)
	channels := &common.ResourceChannels{
		PodList: common.GetPodListChannelWithOptions(client, common.NewSameNamespaceQuery(namespace),
			api.ListOptions{
				LabelSelector: labelSelector,
				FieldSelector: fields.Everything(),
			}, 1),
	}

	pods := <-channels.PodList.List
	if err := <-channels.PodList.Error; err != nil {
		return nil, err
	}

	podInfo := common.GetPodInfo(rc.Status.Replicas, rc.Spec.Replicas, pods.Items)
	return &podInfo, nil
}

// CreateDeploymentList returns a list of all Deployment model objects in the cluster, based on all
// Kubernetes Deployment API objects.
func CreateDeploymentList(deployments []extensions.Deployment, pods []api.Pod,
	events []api.Event, dsQuery *dataselect.DataSelectQuery, heapsterClient *heapster.HeapsterClient) *DeploymentList {

	deploymentList := &DeploymentList{
		Deployments: make([]Deployment, 0),
		ListMeta:    common.ListMeta{TotalItems: len(deployments)},
	}

	cachedResources := &dataselect.CachedResources{
		Pods: pods,
	}
	replicationControllerCells, metricPromises := dataselect.GenericDataSelectWithMetrics(toCells(deployments), dsQuery, cachedResources, heapsterClient)
	deployments = fromCells(replicationControllerCells)

	for _, deployment := range deployments {

		matchingPods := common.FilterNamespacedPodsBySelector(pods, deployment.ObjectMeta.Namespace,
			deployment.Spec.Selector.MatchLabels)
		podInfo := common.GetPodInfo(deployment.Status.Replicas, deployment.Spec.Replicas,
			matchingPods)
		podInfo.Warnings = event.GetPodsEventWarnings(events, matchingPods)

		deploymentList.Deployments = append(deploymentList.Deployments,
			Deployment{
				ObjectMeta:      common.NewObjectMeta(deployment.ObjectMeta),
				TypeMeta:        common.NewTypeMeta(common.ResourceKindDeployment),
				ContainerImages: common.GetContainerImages(&deployment.Spec.Template.Spec),
				Pods:            podInfo,
			})
	}

	cumulativeMetrics, err := metricPromises.GetMetrics()
	deploymentList.CumulativeMetrics = cumulativeMetrics
	if err != nil {
		deploymentList.CumulativeMetrics = make([]metric.Metric, 0)
	}

	return deploymentList
}

// GetDeploymentDetail returns model object of deployment and error, if any.
func GetDeploymentDetail(client client.Interface, heapsterClient heapster.HeapsterClient, namespace string,
	deploymentName string) (*DeploymentDetail, error) {

	log.Printf("Getting details of %s deployment in %s namespace", deploymentName, namespace)

	deployment, err := client.Extensions().Deployments(namespace).Get(deploymentName)
	if err != nil {
		return nil, err
	}

	selector, err := unversioned.LabelSelectorAsSelector(deployment.Spec.Selector)
	if err != nil {
		return nil, err
	}
	options := api.ListOptions{LabelSelector: selector}

	channels := &common.ResourceChannels{
		ReplicaSetList: common.GetReplicaSetListChannelWithOptions(client.Extensions(),
			common.NewSameNamespaceQuery(namespace), options, 1),
		PodList: common.GetPodListChannelWithOptions(client,
			common.NewSameNamespaceQuery(namespace), options, 1),
	}

	rawRs := <-channels.ReplicaSetList.List
	if err := <-channels.ReplicaSetList.Error; err != nil {
		return nil, err
	}
	rawPods := <-channels.PodList.List
	if err := <-channels.PodList.Error; err != nil {
		return nil, err
	}

	// Pods
	podList, err := GetDeploymentPods(client, heapsterClient, dataselect.DefaultDataSelectWithMetrics, namespace, deploymentName)
	if err != nil {
		return nil, err
	}
	// Events
	eventList, err := GetDeploymentEvents(client, dataselect.DefaultDataSelect, namespace, deploymentName)
	if err != nil {
		return nil, err
	}

	// Old Replica Sets
	oldReplicaSetList, err := GetDeploymentOldReplicaSets(client, dataselect.DefaultDataSelect, namespace, deploymentName)
	if err != nil {
		return nil, err
	}

	// New Replica Set
	newRs, err := deploymentutil.FindNewReplicaSet(deployment, rawRs.Items)
	if err != nil {
		return nil, err
	}
	var newReplicaSet replicaset.ReplicaSet
	if newRs != nil {
		newRsPodInfo := common.GetPodInfo(newRs.Status.Replicas, newRs.Spec.Replicas, rawPods.Items)
		newReplicaSet = replicaset.ToReplicaSet(newRs, &newRsPodInfo)
	}

	// Extra Info
	var rollingUpdateStrategy *RollingUpdateStrategy
	if deployment.Spec.Strategy.RollingUpdate != nil {
		rollingUpdateStrategy = &RollingUpdateStrategy{
			MaxSurge:       deployment.Spec.Strategy.RollingUpdate.MaxSurge.IntValue(),
			MaxUnavailable: deployment.Spec.Strategy.RollingUpdate.MaxUnavailable.IntValue(),
		}
	}

	return &DeploymentDetail{
		ObjectMeta:            common.NewObjectMeta(deployment.ObjectMeta),
		TypeMeta:              common.NewTypeMeta(common.ResourceKindDeployment),
		PodList:               *podList,
		Selector:              deployment.Spec.Selector.MatchLabels,
		StatusInfo:            GetStatusInfo(&deployment.Status),
		Strategy:              deployment.Spec.Strategy.Type,
		MinReadySeconds:       deployment.Spec.MinReadySeconds,
		RollingUpdateStrategy: rollingUpdateStrategy,
		OldReplicaSetList:     *oldReplicaSetList,
		NewReplicaSet:         newReplicaSet,
		RevisionHistoryLimit:  deployment.Spec.RevisionHistoryLimit,
		EventList:             *eventList,
	}, nil

}