/*
Copyright 2021 Alibaba Group Holding Limited.

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 extension

import (
	"strings"

	admissionv1 "k8s.io/api/admission/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/runtime/schema"
	"sigs.k8s.io/controller-runtime/pkg/webhook/admission"
)

// The codes following is copied from
// https://github.com/kubernetes-sigs/controller-runtime/blob/e13341355d/pkg/webhook/admission/defaulter_custom.go
// https://github.com/kubernetes-sigs/controller-runtime/blob/e13341355d/pkg/webhook/admission/validator_custom.go
// to support custom defaulter and validator on controller-runtime 0.9+.

// Here's the original license.

/*
Copyright 2021 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.
*/

// validationResponseFromStatus returns a response for admitting a request with provided Status object.
func validationResponseFromStatus(allowed bool, status metav1.Status) admission.Response {
	resp := admission.Response{
		AdmissionResponse: admissionv1.AdmissionResponse{
			Allowed: allowed,
			Result:  &status,
		},
	}
	return resp
}

func GenerateMutatePath(apiPath string, gvk schema.GroupVersionKind) string {
	return apiPath + "/mutate-" + strings.ReplaceAll(gvk.Group, ".", "-") + "-" +
		gvk.Version + "-" + strings.ToLower(gvk.Kind)
}

func GenerateValidatePath(apiPath string, gvk schema.GroupVersionKind) string {
	return apiPath + "/validate-" + strings.ReplaceAll(gvk.Group, ".", "-") + "-" +
		gvk.Version + "-" + strings.ToLower(gvk.Kind)
}