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/*
 * Copyright (c) 2022 Contributors to the Eclipse Foundation
 * Copyright (c) 2010, 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.config.support;

import com.sun.enterprise.config.serverbeans.Domain;
import com.sun.enterprise.util.SystemPropertyConstants;

import org.glassfish.hk2.api.ServiceLocator;

/**
 * CommandTarget is an enumeration of valid configuration target for a command execution
 */
public enum CommandTarget implements TargetValidator {

    /**
     * a domain wide configuration change
     */
    DOMAIN {
        @Override
        public boolean isValid(ServiceLocator locator, String target) {
            return target.equals(TARGET_DOMAIN);
        }

        @Override
        public String getDescription() {
            return "Domain";
        }
    },
    /**
     * configuration change to default server
     */
    DAS {
        @Override
        public boolean isValid(ServiceLocator locator, String target) {
            return target.equals(TARGET_SERVER);
        }

        @Override
        public String getDescription() {
            return "Default server";
        }
    },
    /**
     * a clustered instance configuration change
     */
    CLUSTERED_INSTANCE {
        @Override
        public boolean isValid(ServiceLocator locator, String target) {
            Domain domain = locator.getService(Domain.class);
            return (domain.getClusterForInstance(target) != null);
        }

        @Override
        public String getDescription() {
            return "Clustered Instance";
        }
    },
    /**
     * a standalone instance configuration change
     */
    STANDALONE_INSTANCE {
        @Override
        public boolean isValid(ServiceLocator locator, String target) {
            Domain domain = locator.getService(Domain.class);
            return (domain.getServerNamed(target) != null);
        }

        @Override
        public String getDescription() {
            return "Stand alone instance";
        }
    },
    /**
     * a config configuration change
     */
    CONFIG {
        @Override
        public boolean isValid(ServiceLocator locator, String target) {
            Domain domain = locator.getService(Domain.class);
            return domain.getConfigNamed(target) != null;
        }

        @Override
        public String getDescription() {
            return "Config";
        }
    },
    /**
     * a cluster configuration change
     */
    CLUSTER {
        @Override
        public boolean isValid(ServiceLocator locator, String target) {
            Domain domain = locator.getService(Domain.class);
            return domain.getClusterNamed(target) != null;
        }

        @Override
        public String getDescription() {
            return "Cluster";
        }
    },
    /**
     * a node configuration change
     */
    NODE {
        @Override
        public boolean isValid(ServiceLocator locator, String target) {
            Domain domain = locator.getService(Domain.class);
            return domain.getNodeNamed(target) != null;
        }

        @Override
        public String getDescription() {
            return "Node";
        }
    };

    public static final String TARGET_DOMAIN = "domain";
    public static final String TARGET_SERVER = SystemPropertyConstants.DAS_SERVER_NAME;

    @Override
    public boolean isValid(ServiceLocator locator, String target) {
        return false;
    }


    @Override
    public String getDescription() {
        return this.name();
    }
}