/*
Copyright 2015 The Kubernetes Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package v1alpha1

import (
	"net"
	"strconv"
	"time"

	apimachineryconfigv1alpha1 "k8s.io/apimachinery/pkg/apis/config/v1alpha1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	kruntime "k8s.io/apimachinery/pkg/runtime"
	apiserverconfigv1alpha1 "k8s.io/apiserver/pkg/apis/config/v1alpha1"
	api "k8s.io/kubernetes/pkg/apis/core"
	kubeletapis "k8s.io/kubernetes/pkg/kubelet/apis"
	"k8s.io/kubernetes/pkg/master/ports"
	utilpointer "k8s.io/utils/pointer"
)

func addDefaultingFuncs(scheme *kruntime.Scheme) error {
	return RegisterDefaults(scheme)
}

func SetDefaults_CloudControllerManagerConfiguration(obj *CloudControllerManagerConfiguration) {
	zero := metav1.Duration{}
	if obj.ServiceController.ConcurrentServiceSyncs == 0 {
		obj.ServiceController.ConcurrentServiceSyncs = 1
	}
	if obj.NodeStatusUpdateFrequency == zero {
		obj.NodeStatusUpdateFrequency = metav1.Duration{Duration: 5 * time.Minute}
	}
}

func SetDefaults_KubeControllerManagerConfiguration(obj *KubeControllerManagerConfiguration) {
	zero := metav1.Duration{}
	if len(obj.Controllers) == 0 {
		obj.Controllers = []string{"*"}
	}
	if obj.EndPointController.ConcurrentEndpointSyncs == 0 {
		obj.EndPointController.ConcurrentEndpointSyncs = 5
	}
	if obj.ServiceController.ConcurrentServiceSyncs == 0 {
		obj.ServiceController.ConcurrentServiceSyncs = 1
	}
	if obj.ReplicationController.ConcurrentRCSyncs == 0 {
		obj.ReplicationController.ConcurrentRCSyncs = 5
	}
	if obj.ReplicaSetController.ConcurrentRSSyncs == 0 {
		obj.ReplicaSetController.ConcurrentRSSyncs = 5
	}
	if obj.DaemonSetController.ConcurrentDaemonSetSyncs == 0 {
		obj.DaemonSetController.ConcurrentDaemonSetSyncs = 2
	}
	if obj.JobController.ConcurrentJobSyncs == 0 {
		obj.JobController.ConcurrentJobSyncs = 5
	}
	if obj.ResourceQuotaController.ConcurrentResourceQuotaSyncs == 0 {
		obj.ResourceQuotaController.ConcurrentResourceQuotaSyncs = 5
	}
	if obj.DeploymentController.ConcurrentDeploymentSyncs == 0 {
		obj.DeploymentController.ConcurrentDeploymentSyncs = 5
	}
	if obj.NamespaceController.ConcurrentNamespaceSyncs == 0 {
		obj.NamespaceController.ConcurrentNamespaceSyncs = 10
	}
	if obj.SAController.ConcurrentSATokenSyncs == 0 {
		obj.SAController.ConcurrentSATokenSyncs = 5
	}
	if obj.ResourceQuotaController.ResourceQuotaSyncPeriod == zero {
		obj.ResourceQuotaController.ResourceQuotaSyncPeriod = metav1.Duration{Duration: 5 * time.Minute}
	}
	if obj.NamespaceController.NamespaceSyncPeriod == zero {
		obj.NamespaceController.NamespaceSyncPeriod = metav1.Duration{Duration: 5 * time.Minute}
	}
	if obj.PersistentVolumeBinderController.PVClaimBinderSyncPeriod == zero {
		obj.PersistentVolumeBinderController.PVClaimBinderSyncPeriod = metav1.Duration{Duration: 15 * time.Second}
	}
	if obj.HPAController.HorizontalPodAutoscalerSyncPeriod == zero {
		obj.HPAController.HorizontalPodAutoscalerSyncPeriod = metav1.Duration{Duration: 30 * time.Second}
	}
	if obj.HPAController.HorizontalPodAutoscalerUpscaleForbiddenWindow == zero {
		obj.HPAController.HorizontalPodAutoscalerUpscaleForbiddenWindow = metav1.Duration{Duration: 3 * time.Minute}
	}
	if obj.HPAController.HorizontalPodAutoscalerDownscaleForbiddenWindow == zero {
		obj.HPAController.HorizontalPodAutoscalerDownscaleForbiddenWindow = metav1.Duration{Duration: 5 * time.Minute}
	}
	if obj.HPAController.HorizontalPodAutoscalerTolerance == 0 {
		obj.HPAController.HorizontalPodAutoscalerTolerance = 0.1
	}
	if obj.DeploymentController.DeploymentControllerSyncPeriod == zero {
		obj.DeploymentController.DeploymentControllerSyncPeriod = metav1.Duration{Duration: 30 * time.Second}
	}
	if obj.DeprecatedController.RegisterRetryCount == 0 {
		obj.DeprecatedController.RegisterRetryCount = 10
	}
	if obj.NodeLifecycleController.PodEvictionTimeout == zero {
		obj.NodeLifecycleController.PodEvictionTimeout = metav1.Duration{Duration: 5 * time.Minute}
	}
	if obj.NodeLifecycleController.NodeMonitorGracePeriod == zero {
		obj.NodeLifecycleController.NodeMonitorGracePeriod = metav1.Duration{Duration: 40 * time.Second}
	}
	if obj.NodeLifecycleController.NodeStartupGracePeriod == zero {
		obj.NodeLifecycleController.NodeStartupGracePeriod = metav1.Duration{Duration: 60 * time.Second}
	}
	if obj.NodeIpamController.NodeCIDRMaskSize == 0 {
		obj.NodeIpamController.NodeCIDRMaskSize = 24
	}
	if obj.PodGCController.TerminatedPodGCThreshold == 0 {
		obj.PodGCController.TerminatedPodGCThreshold = 12500
	}
	if obj.GarbageCollectorController.EnableGarbageCollector == nil {
		obj.GarbageCollectorController.EnableGarbageCollector = utilpointer.BoolPtr(true)
	}
	if obj.GarbageCollectorController.ConcurrentGCSyncs == 0 {
		obj.GarbageCollectorController.ConcurrentGCSyncs = 20
	}
	if obj.CSRSigningController.ClusterSigningCertFile == "" {
		obj.CSRSigningController.ClusterSigningCertFile = "/etc/kubernetes/ca/ca.pem"
	}
	if obj.CSRSigningController.ClusterSigningKeyFile == "" {
		obj.CSRSigningController.ClusterSigningKeyFile = "/etc/kubernetes/ca/ca.key"
	}
	if obj.CSRSigningController.ClusterSigningDuration == zero {
		obj.CSRSigningController.ClusterSigningDuration = metav1.Duration{Duration: 365 * 24 * time.Hour}
	}
	if obj.AttachDetachController.ReconcilerSyncLoopPeriod == zero {
		obj.AttachDetachController.ReconcilerSyncLoopPeriod = metav1.Duration{Duration: 60 * time.Second}
	}
	if obj.NodeLifecycleController.EnableTaintManager == nil {
		obj.NodeLifecycleController.EnableTaintManager = utilpointer.BoolPtr(true)
	}
	if obj.HPAController.HorizontalPodAutoscalerUseRESTClients == nil {
		obj.HPAController.HorizontalPodAutoscalerUseRESTClients = utilpointer.BoolPtr(true)
	}
}

func SetDefaults_GenericComponentConfiguration(obj *GenericComponentConfiguration) {
	zero := metav1.Duration{}
	if obj.MinResyncPeriod == zero {
		obj.MinResyncPeriod = metav1.Duration{Duration: 12 * time.Hour}
	}
	if obj.ContentType == "" {
		obj.ContentType = "application/vnd.kubernetes.protobuf"
	}
	if obj.KubeAPIQPS == 0 {
		obj.KubeAPIQPS = 20.0
	}
	if obj.KubeAPIBurst == 0 {
		obj.KubeAPIBurst = 30
	}
	if obj.ControllerStartInterval == zero {
		obj.ControllerStartInterval = metav1.Duration{Duration: 0 * time.Second}
	}

	// Use the default LeaderElectionConfiguration options
	apiserverconfigv1alpha1.RecommendedDefaultLeaderElectionConfiguration(&obj.LeaderElection)
}

func SetDefaults_KubeCloudSharedConfiguration(obj *KubeCloudSharedConfiguration) {
	zero := metav1.Duration{}
	// Port
	if obj.Address == "" {
		obj.Address = "0.0.0.0"
	}
	if obj.RouteReconciliationPeriod == zero {
		obj.RouteReconciliationPeriod = metav1.Duration{Duration: 10 * time.Second}
	}
	if obj.NodeMonitorPeriod == zero {
		obj.NodeMonitorPeriod = metav1.Duration{Duration: 5 * time.Second}
	}
	if obj.ClusterName == "" {
		obj.ClusterName = "kubernetes"
	}
	if obj.ConfigureCloudRoutes == nil {
		obj.ConfigureCloudRoutes = utilpointer.BoolPtr(true)
	}
}

func SetDefaults_PersistentVolumeRecyclerConfiguration(obj *PersistentVolumeRecyclerConfiguration) {
	if obj.MaximumRetry == 0 {
		obj.MaximumRetry = 3
	}
	if obj.MinimumTimeoutNFS == 0 {
		obj.MinimumTimeoutNFS = 300
	}
	if obj.IncrementTimeoutNFS == 0 {
		obj.IncrementTimeoutNFS = 30
	}
	if obj.MinimumTimeoutHostPath == 0 {
		obj.MinimumTimeoutHostPath = 60
	}
	if obj.IncrementTimeoutHostPath == 0 {
		obj.IncrementTimeoutHostPath = 30
	}
}

func SetDefaults_VolumeConfiguration(obj *VolumeConfiguration) {
	if obj.EnableHostPathProvisioning == nil {
		obj.EnableHostPathProvisioning = utilpointer.BoolPtr(false)
	}
	if obj.EnableDynamicProvisioning == nil {
		obj.EnableDynamicProvisioning = utilpointer.BoolPtr(true)
	}
	if obj.FlexVolumePluginDir == "" {
		obj.FlexVolumePluginDir = "/usr/libexec/kubernetes/kubelet-plugins/volume/exec/"
	}
}

func SetDefaults_KubeSchedulerConfiguration(obj *KubeSchedulerConfiguration) {
	if len(obj.SchedulerName) == 0 {
		obj.SchedulerName = api.DefaultSchedulerName
	}

	if obj.HardPodAffinitySymmetricWeight == 0 {
		obj.HardPodAffinitySymmetricWeight = api.DefaultHardPodAffinitySymmetricWeight
	}

	if obj.AlgorithmSource.Policy == nil &&
		(obj.AlgorithmSource.Provider == nil || len(*obj.AlgorithmSource.Provider) == 0) {
		val := SchedulerDefaultProviderName
		obj.AlgorithmSource.Provider = &val
	}

	if policy := obj.AlgorithmSource.Policy; policy != nil {
		if policy.ConfigMap != nil && len(policy.ConfigMap.Namespace) == 0 {
			obj.AlgorithmSource.Policy.ConfigMap.Namespace = api.NamespaceSystem
		}
	}

	if host, port, err := net.SplitHostPort(obj.HealthzBindAddress); err == nil {
		if len(host) == 0 {
			host = "0.0.0.0"
		}
		obj.HealthzBindAddress = net.JoinHostPort(host, port)
	} else {
		obj.HealthzBindAddress = net.JoinHostPort("0.0.0.0", strconv.Itoa(ports.SchedulerPort))
	}

	if host, port, err := net.SplitHostPort(obj.MetricsBindAddress); err == nil {
		if len(host) == 0 {
			host = "0.0.0.0"
		}
		obj.MetricsBindAddress = net.JoinHostPort(host, port)
	} else {
		obj.MetricsBindAddress = net.JoinHostPort("0.0.0.0", strconv.Itoa(ports.SchedulerPort))
	}

	if obj.ClientConnection.QPS == 0.0 {
		obj.ClientConnection.QPS = 50.0
	}

	if obj.ClientConnection.Burst == 0 {
		obj.ClientConnection.Burst = 100
	}

	if len(obj.LeaderElection.LockObjectNamespace) == 0 {
		obj.LeaderElection.LockObjectNamespace = SchedulerDefaultLockObjectNamespace
	}
	if len(obj.LeaderElection.LockObjectName) == 0 {
		obj.LeaderElection.LockObjectName = SchedulerDefaultLockObjectName
	}

	if len(obj.FailureDomains) == 0 {
		obj.FailureDomains = kubeletapis.DefaultFailureDomains
	}

	if obj.PercentageOfNodesToScore == 0 {
		// by default, stop finding feasible nodes once the number of feasible nodes is 50% of the cluster.
		obj.PercentageOfNodesToScore = 50
	}

	// Use the default ClientConnectionConfiguration and LeaderElectionConfiguration options
	apimachineryconfigv1alpha1.RecommendedDefaultClientConnectionConfiguration(&obj.ClientConnection)
	apiserverconfigv1alpha1.RecommendedDefaultLeaderElectionConfiguration(&obj.LeaderElection.LeaderElectionConfiguration)
}