/*
 * Copyright 2002-2022 the original author or 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
 *
 *      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.web.context;

import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

import org.springframework.security.core.context.SecurityContext;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.context.SecurityContextHolderStrategy;
import org.springframework.util.Assert;

/**
 * @author Luke Taylor
 * @since 3.1
 */
public final class NullSecurityContextRepository implements SecurityContextRepository {

	private SecurityContextHolderStrategy securityContextHolderStrategy = SecurityContextHolder
			.getContextHolderStrategy();

	@Override
	public boolean containsContext(HttpServletRequest request) {
		return false;
	}

	@Override
	public SecurityContext loadContext(HttpRequestResponseHolder requestResponseHolder) {
		return this.securityContextHolderStrategy.createEmptyContext();
	}

	@Override
	public void saveContext(SecurityContext context, HttpServletRequest request, HttpServletResponse response) {
	}

	/**
	 * Sets the {@link SecurityContextHolderStrategy} to use. The default action is to use
	 * the {@link SecurityContextHolderStrategy} stored in {@link SecurityContextHolder}.
	 *
	 * @since 5.8
	 */
	public void setSecurityContextHolderStrategy(SecurityContextHolderStrategy securityContextHolderStrategy) {
		Assert.notNull(securityContextHolderStrategy, "securityContextHolderStrategy cannot be null");
		this.securityContextHolderStrategy = securityContextHolderStrategy;
	}

}
