/*
 * Copyright (c) 2000, 2017 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
 */

/*
 * @(#)ConsoleBrokerAdminManager.java	1.4 06/27/07
 */

package com.sun.messaging.jmq.admin.apps.console;

import java.util.Vector;
import com.sun.messaging.jmq.admin.util.UserPropertiesException;
import com.sun.messaging.jmq.admin.bkrutil.BrokerAdmin;
import com.sun.messaging.jmq.admin.bkrutil.BrokerAdminException;

public class ConsoleBrokerAdminManager {
    private String fileName = "brokerlist.properties";

    /**
     * The collection of BrokerAdmin objects.
     */
    private Vector admins = new Vector();

    public ConsoleBrokerAdminManager() {
    }

    /**
     * Adds an instance of BrokerAdmin to the list. This will simply overwrite the existing one if there is any. Should make
     * sure dups are not added by calling exist() before doing this.
     */
    public void addBrokerAdmin(BrokerAdmin ba) {
        admins.addElement(ba);
    }

    /**
     *
     */
    public void deleteBrokerAdmin(BrokerAdmin ba) {

        String baKey = ba.getKey();

        for (int i = 0; i < admins.size(); i++) {
            BrokerAdmin ba2 = (BrokerAdmin) admins.get(i);
            String ba2Key = ba2.getKey();
            if (baKey.equals(ba2Key)) {
                admins.remove(i);
                return;
            }
        }
    }

    /**
     * Reads the files and populates the manager with BrokerAdmin objects.
     *
     */
    public void readBrokerAdminsFromFile() throws UserPropertiesException, BrokerAdminException {

        BrokerListProperties blProps = readFromFile();

        int count = blProps.getBrokerCount();

        for (int i = 0; i < count; ++i) {
            BrokerAdmin ba = blProps.getBrokerAdmin(i);

            addBrokerAdmin(ba);
        }
    }

    /**
     * Writes broker list to files.
     */
    public void writeBrokerAdminsToFile() throws UserPropertiesException {

        BrokerListProperties blProps = new BrokerListProperties();

        for (int i = 0; i < admins.size(); i++) {
            BrokerAdmin ba = (BrokerAdmin) admins.get(i);
            blProps.addBrokerAdmin(ba);
        }

        writeToFile(blProps);
    }

    /**
     * Returns the list of admin instances.
     */
    public Vector getBrokerAdmins() {
        return admins;
    }

    /**
     * Returns true if the key of BrokerAdmin exists in the list. Returns false otherwise.
     */
    public boolean exist(String key) {
        for (int i = 0; i < admins.size(); i++) {
            BrokerAdmin ba = (BrokerAdmin) admins.get(i);
            String baKey = ba.getKey();
            if (key.equals(baKey)) {
                return true;
            }
        }

        return false;
    }

    /**
     * Sets the name of the file where the objstore list is saved when writeObjStoresToFile() is called. This is also the
     * file that is read from when readObjStoresFromFile() is called.
     *
     * @param fileName The fileName where the object stores are read from and written to.
     */
    public void setFileName(String fileName) {
        this.fileName = fileName;
    }

    /**
     * Reads the files containing the list of Brokers.
     *
     * @return Properties object containing list of Brokers
     *
     */
    private BrokerListProperties readFromFile() throws UserPropertiesException {

        BrokerListProperties blProps = new BrokerListProperties();

        blProps.setFileName(fileName);
        blProps.load();

        return (blProps);
    }

    /**
     * Writes ObjStoreAttrs to files.
     *
     */
    private void writeToFile(BrokerListProperties blProps) throws UserPropertiesException {
        blProps.setFileName(fileName);
        blProps.save();
    }

}
