/*
Copyright 2020 The Karmada 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 options

import (
	"fmt"
	"time"

	"github.com/spf13/pflag"
	"k8s.io/cli-runtime/pkg/genericclioptions"
)

// DefaultKarmadaClusterNamespace defines the default namespace where the member cluster secrets are stored.
const DefaultKarmadaClusterNamespace = "karmada-cluster"

// DefaultHostClusterDomain defines the default cluster domain of karmada host cluster.
const DefaultHostClusterDomain = "cluster.local"

// DefaultKarmadactlCommandDuration defines the default timeout for karmadactl execute
const DefaultKarmadactlCommandDuration = 60 * time.Second

const (
	// KarmadaCertsName the secret name of karmada certs
	KarmadaCertsName = "karmada-cert"
	// CaCertAndKeyName ca certificate cert/key name in karmada certs secret
	CaCertAndKeyName = "ca"
)

// DefaultConfigFlags It composes the set of values necessary for obtaining a REST client config with default values set.
var DefaultConfigFlags = genericclioptions.NewConfigFlags(true).WithDeprecatedPasswordFlag().WithDiscoveryBurst(300).WithDiscoveryQPS(50.0)

// AddKubeConfigFlags adds flags to the specified FlagSet.
func AddKubeConfigFlags(flags *pflag.FlagSet) {
	flags.StringVar(DefaultConfigFlags.KubeConfig, "kubeconfig", *DefaultConfigFlags.KubeConfig, "Path to the kubeconfig file to use for CLI requests.")
	flags.StringVar(DefaultConfigFlags.Context, "karmada-context", *DefaultConfigFlags.Context, "The name of the kubeconfig context to use")
}

// AddNamespaceFlag add namespace flag to the specified FlagSet.
func AddNamespaceFlag(flags *pflag.FlagSet) {
	flags.StringVarP(DefaultConfigFlags.Namespace, "namespace", "n", *DefaultConfigFlags.Namespace, "If present, the namespace scope for this CLI request.")
}

// OperationScope defines the operation scope of a command.
type OperationScope string

// String returns the string value of OperationScope
func (o *OperationScope) String() string {
	return string(*o)
}

// Set value to OperationScope
func (o *OperationScope) Set(s string) error {
	switch s {
	case "":
		return nil
	case string(KarmadaControlPlane):
		*o = KarmadaControlPlane
		return nil
	case string(Members):
		*o = Members
		return nil
	case string(All):
		*o = All
		return nil
	}
	return fmt.Errorf("not support OperationScope: %s", s)
}

// Type returns type of OperationScope
func (o *OperationScope) Type() string {
	return "operationScope"
}

const (
	// KarmadaControlPlane indicates the operation scope of a command is Karmada control plane.
	KarmadaControlPlane OperationScope = "karmada"
	// Members indicates the operation scope of a command is member clusters.
	Members OperationScope = "members"
	// All indicates the operation scope of a command contains Karmada control plane and member clusters.
	All OperationScope = "all"
)

// VerifyOperationScopeFlags verifies whether the given operationScope is valid.
func VerifyOperationScopeFlags(operationScope OperationScope, supportScope ...OperationScope) error {
	if len(supportScope) == 0 {
		supportScope = []OperationScope{KarmadaControlPlane, Members, All}
	}
	for _, scope := range supportScope {
		if operationScope == scope {
			return nil
		}
	}
	return fmt.Errorf("not support operation scope: %s", operationScope)
}

// ContainKarmadaScope returns true if the given operationScope contains Karmada control plane.
func ContainKarmadaScope(operationScope OperationScope) bool {
	return operationScope == KarmadaControlPlane || operationScope == All
}

// ContainMembersScope returns true if the given operationScope contains member clusters.
func ContainMembersScope(operationScope OperationScope) bool {
	return operationScope == Members || operationScope == All
}