/*
 * Copyright 2004-present 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.webauthn.authentication;

import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpSession;
import org.jspecify.annotations.Nullable;

import org.springframework.security.web.webauthn.api.PublicKeyCredentialRequestOptions;
import org.springframework.util.Assert;

/**
 * A {@link PublicKeyCredentialRequestOptionsRepository} that stores the
 * {@link PublicKeyCredentialRequestOptions} in the
 * {@link jakarta.servlet.http.HttpSession}.
 *
 * @author Rob Winch
 * @since 6.4
 */
public class HttpSessionPublicKeyCredentialRequestOptionsRepository
		implements PublicKeyCredentialRequestOptionsRepository {

	static final String DEFAULT_ATTR_NAME = PublicKeyCredentialRequestOptionsRepository.class.getName()
		.concat(".ATTR_NAME");

	private String attrName = DEFAULT_ATTR_NAME;

	@Override
	public void save(HttpServletRequest request, HttpServletResponse response,
			@Nullable PublicKeyCredentialRequestOptions options) {
		HttpSession session = request.getSession();
		session.setAttribute(this.attrName, options);
	}

	@Override
	public @Nullable PublicKeyCredentialRequestOptions load(HttpServletRequest request) {
		HttpSession session = request.getSession(false);
		if (session == null) {
			return null;
		}
		return (PublicKeyCredentialRequestOptions) session.getAttribute(this.attrName);
	}

	public void setAttrName(String attrName) {
		Assert.notNull(attrName, "attrName cannot be null");
		this.attrName = attrName;
	}

}
