/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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
 *
 *    https://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 org.springframework.security.access.vote

import groovy.transform.CompileStatic

import org.springframework.context.support.MessageSourceAccessor
import org.springframework.security.access.AccessDecisionManager
import org.springframework.security.access.AccessDecisionVoter
import org.springframework.security.access.AccessDeniedException
import org.springframework.security.access.ConfigAttribute
import org.springframework.security.core.SpringSecurityMessageSource

@CompileStatic
abstract class AbstractAccessDecisionManager implements AccessDecisionManager {

	protected final MessageSourceAccessor messages = SpringSecurityMessageSource.accessor
	protected final List<AccessDecisionVoter> decisionVoters

	boolean allowIfAllAbstainDecisions

	AbstractAccessDecisionManager(List<AccessDecisionVoter> decisionVoters) {
		this.decisionVoters = decisionVoters == null ? [] : new ArrayList<>(decisionVoters)
	}

	List<AccessDecisionVoter> getDecisionVoters() {
		decisionVoters
	}

	@Override
	boolean supports(ConfigAttribute attribute) {
		decisionVoters.any { it.supports(attribute) }
	}

	@Override
	boolean supports(Class<?> clazz) {
		decisionVoters.every { it.supports(clazz) }
	}

	protected void checkAllowIfAllAbstainDecisions() {
		if (!allowIfAllAbstainDecisions) {
			throw new AccessDeniedException(
					messages.getMessage(
							'AbstractAccessDecisionManager.accessDenied',
							'Access is denied'
					)
			)
		}
	}
}
