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/*
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 *  Copyright (c) [2018] Payara Foundation and/or its affiliates. All rights reserved.
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 *  General Public License Version 2 only ("GPL") or the Common Development
 *  and Distribution License("CDDL") (collectively, the "License").  You
 *  may not use this file except in compliance with the License.  You can
 *  obtain a copy of the License at
 *  https://github.com/payara/Payara/blob/master/LICENSE.txt
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 *  file that accompanied this code.
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package fish.payara.admin.amx;

import fish.payara.admin.amx.config.AMXConfiguration;
import java.beans.PropertyChangeEvent;
import java.util.Collections;
import javax.annotation.PostConstruct;
import javax.inject.Inject;
import org.glassfish.admin.mbeanserver.BootAMX;
import org.glassfish.api.StartupRunLevel;
import org.glassfish.hk2.api.ServiceLocator;
import org.glassfish.hk2.runlevel.RunLevel;
import org.jvnet.hk2.annotations.Service;
import org.jvnet.hk2.config.ConfigListener;
import org.jvnet.hk2.config.UnprocessedChangeEvent;
import org.jvnet.hk2.config.UnprocessedChangeEvents;

/**
 *
 * @author jonathan
 * @since 4.1.2.172
 */
@Service(name="amx-boot-service")
@RunLevel(StartupRunLevel.VAL)
public class AMXBootService implements ConfigListener {
    
    @Inject
    AMXConfiguration config;
    
    @Inject
    ServiceLocator habitat;
    
    private boolean enabled;
    private BootAMX bootAMX;
    
    @PostConstruct
    public void postConstruct(){
        enabled = Boolean.valueOf(config.getEnabled());
        if (enabled){
            startup();
        }
        
    }
    
    private void startup(){
        bootAMX = habitat.getService(BootAMX.class);
        bootAMX.bootAMX();
    }
    
    public void setEnabled(boolean enabled){
        this.enabled = enabled;
        if (enabled){
            startup();
        }   
    }

    @Override
    public UnprocessedChangeEvents changed(PropertyChangeEvent[] events) {
        UnprocessedChangeEvents unchanged = null;
        for (PropertyChangeEvent event: events){
            if (event.getPropertyName().contains("enabled")){
                String change = (String) event.getNewValue();
                if (change.equalsIgnoreCase("false")){
                    unchanged = new UnprocessedChangeEvents(new UnprocessedChangeEvent(event, "Unable to stop AMX dynamically"));
                } else if (change.equalsIgnoreCase("true")){
                    setEnabled(true);
                } else {
                    throw new IllegalArgumentException("Not boolean change" + event.toString());
                }
            }
        }

        return unchanged;
    }
    
    
    
}