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/*
 * Copyright (c) 2022 Contributors to the Eclipse Foundation
 * Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package org.glassfish.ejb.deployment.node;

import com.sun.enterprise.deployment.node.DeploymentDescriptorNode;
import com.sun.enterprise.deployment.node.MethodNode;
import com.sun.enterprise.deployment.node.XMLElement;

import org.glassfish.ejb.deployment.descriptor.ConcurrentMethodDescriptor;
import org.glassfish.ejb.deployment.descriptor.TimeoutValueDescriptor;
import org.w3c.dom.Node;

import static org.glassfish.ejb.deployment.EjbTagNames.CONCURRENT_ACCESS_TIMEOUT;
import static org.glassfish.ejb.deployment.EjbTagNames.CONCURRENT_LOCK;
import static org.glassfish.ejb.deployment.EjbTagNames.METHOD;

public class ConcurrentMethodNode extends DeploymentDescriptorNode {

    private static final String WRITE_LOCK = "Write";

    private ConcurrentMethodDescriptor descriptor;

    public ConcurrentMethodNode() {
        registerElementHandler(new XMLElement(METHOD), MethodNode.class, "setConcurrentMethod");
        registerElementHandler(new XMLElement(CONCURRENT_ACCESS_TIMEOUT), TimeoutValueNode.class, "setAccessTimeout");
    }


    @Override
    public ConcurrentMethodDescriptor getDescriptor() {
        if (descriptor == null) {
            descriptor = new ConcurrentMethodDescriptor();
        }
        return descriptor;
    }


    @Override
    public void setElementValue(XMLElement element, String value) {
        if (CONCURRENT_LOCK.equals(element.getQName())) {
            descriptor.setWriteLock(value.equals(WRITE_LOCK));
        } else {
            super.setElementValue(element, value);
        }
    }


    @Override
    public Node writeDescriptor(Node parent, String nodeName, ConcurrentMethodDescriptor desc) {
        Node concurrentNode = super.writeDescriptor(parent, nodeName, descriptor);
        MethodNode methodNode = new MethodNode();
        methodNode.writeJavaMethodDescriptor(concurrentNode, METHOD, desc.getConcurrentMethod());
        if (desc.hasLockMetadata()) {
            String lockType = desc.isWriteLocked() ? "Write" : "Read";
            appendTextChild(concurrentNode, CONCURRENT_LOCK, lockType);
        }

        if (desc.hasAccessTimeout()) {
            TimeoutValueNode timeoutValueNode = new TimeoutValueNode();
            TimeoutValueDescriptor timeoutDesc = new TimeoutValueDescriptor();
            timeoutDesc.setValue(desc.getAccessTimeoutValue());
            timeoutDesc.setUnit(desc.getAccessTimeoutUnit());
            timeoutValueNode.writeDescriptor(concurrentNode, CONCURRENT_ACCESS_TIMEOUT, timeoutDesc);
        }
        return concurrentNode;
    }
}