// Copyright 2019 Antrea 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 networkpolicy

import (
	"k8s.io/apimachinery/pkg/apis/meta/internalversion"
	"k8s.io/apimachinery/pkg/fields"
	"k8s.io/apimachinery/pkg/labels"
)

// GetSelectors extracts label selector, field selector, and key selector from the provided options.
func GetSelectors(options *internalversion.ListOptions) (string, labels.Selector, fields.Selector) {
	label := labels.Everything()
	if options != nil && options.LabelSelector != nil {
		label = options.LabelSelector
	}
	field := fields.Everything()
	if options != nil && options.FieldSelector != nil {
		field = options.FieldSelector
	}
	key, _ := field.RequiresExactMatch("metadata.name")
	return key, label, field
}
