/*
 *
 * Copyright 2020 The KubeSphere 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 authorizerfactory

import (
	"kubesphere.io/kubesphere/pkg/apiserver/authorization/authorizer"
)

// alwaysAllowAuthorizer is an implementation of authorizer.Attributes
// which always says yes to an authorization request.
// It is useful in tests and when using kubernetes in an open manner.
type alwaysAllowAuthorizer struct{}

func (alwaysAllowAuthorizer) Authorize(authorizer.Attributes) (authorized authorizer.Decision, reason string, err error) {
	return authorizer.DecisionAllow, "", nil
}

func NewAlwaysAllowAuthorizer() *alwaysAllowAuthorizer {
	return new(alwaysAllowAuthorizer)
}

// alwaysDenyAuthorizer is an implementation of authorizer.Attributes
// which always says no to an authorization request.
// It is useful in unit tests to force an operation to be forbidden.
type alwaysDenyAuthorizer struct{}

func (alwaysDenyAuthorizer) Authorize(a authorizer.Attributes) (decision authorizer.Decision, reason string, err error) {
	return authorizer.DecisionNoOpinion, "Everything is forbidden.", nil
}

func NewAlwaysDenyAuthorizer() *alwaysDenyAuthorizer {
	return new(alwaysDenyAuthorizer)
}