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/**
 * Copyright (C) 2020 Mike Hummel ([email protected])
 *
 * 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
 *
 *         http://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 de.mhus.osgi.jms;

import java.util.LinkedList;

import org.osgi.framework.BundleContext;
import org.osgi.framework.FrameworkUtil;
import org.osgi.framework.ServiceReference;
import org.osgi.service.component.ComponentContext;
import org.osgi.service.component.annotations.Activate;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Deactivate;

import de.mhus.osgi.api.jms.JmsReceiver;
import de.mhus.osgi.api.jms.JmsReceiverAdmin;

@Component(name = "JmsReceiverAdmin", immediate = true)
public class JmsReceiverAdminImpl implements JmsReceiverAdmin {

    private LinkedList receivers = new LinkedList();

    @Activate
    public void doActivate(ComponentContext ctx) {}

    @Deactivate
    public void doDeactivate(ComponentContext ctx) {
        for (JmsReceiver r : list()) remove(r.getName());
    }

    @Override
    public void add(JmsReceiver receiver) {
        receiver.init(this);
        receivers.add(receiver);
    }

    @Override
    public void remove(String queue) {
        for (JmsReceiver r : receivers) {
            if (r.getName().equals(queue)) {
                receivers.remove(r);
                r.close();
                return;
            }
        }
    }

    @Override
    public JmsReceiver[] list() {
        return receivers.toArray(new JmsReceiver[receivers.size()]);
    }

    public static JmsReceiverAdmin findAdmin() {
        BundleContext bc = FrameworkUtil.getBundle(JmsReceiverAdminImpl.class).getBundleContext();
        ServiceReference ref = bc.getServiceReference(JmsReceiverAdmin.class);
        return bc.getService(ref);
    }
}