/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.neo4j.internal.kernel.api;

public abstract class DefaultCloseListenable implements AutoCloseablePlus {
    protected CloseListener closeListener;
    private int token = UNTRACKED;

    @Override
    public final void setCloseListener(CloseListener closeListener) {
        this.closeListener = closeListener;
    }

    public final CloseListener getCloseListener() {
        return this.closeListener;
    }

    @Override
    public final void close() {
        closeInternal();
        var listener = closeListener;
        if (listener != null) {
            listener.onClosed(this);
        }
    }

    @Override
    public final void setToken(int token) {
        this.token = token;
    }

    @Override
    public final int getToken() {
        return token;
    }

    public static DefaultCloseListenable wrap(AutoCloseable c) {
        return new DefaultCloseListenable() {
            private boolean closed;

            @Override
            public void closeInternal() {
                try {
                    c.close();
                    closed = true;
                } catch (Exception e) {
                    throw new RuntimeException(e);
                }
            }

            @Override
            public boolean isClosed() {
                return closed;
            }
        };
    }
}
