/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.geronimo.st.v30.core;

import org.apache.geronimo.st.v30.core.internal.Trace;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Plugin;
import org.eclipse.core.runtime.Status;
import org.eclipse.wst.server.core.IServer;
import org.eclipse.wst.server.core.IServerLifecycleListener;
import org.eclipse.wst.server.core.ServerCore;
import org.osgi.framework.BundleContext;

/**
 * The activator class controls the plug-in life cycle
 *
 * @version $Rev$ $Date$
 */
public class Activator extends Plugin {
    // The plug-in ID
    public static final String PLUGIN_ID = "org.apache.geronimo.st.v30.core";
    /* trace and log switchers */
    public static boolean console;
    public static boolean logCore;
    public static boolean logCommands;
    public static boolean logDesc;
    public static boolean logFacets;
    public static boolean logInternal;
    public static boolean logJaxb;
    public static boolean logOperations;
    public static boolean logOsgi;

    public static boolean traceCore;
    public static boolean traceCommands;
    public static boolean traceDesc;
    public static boolean traceFacets;
    public static boolean traceInternal;
    public static boolean traceJaxb;
    public static boolean traceOperations;
    public static boolean traceOsgi;
    /* end here */
    static {
        try {
            console = Boolean.parseBoolean(Platform.getDebugOption(PLUGIN_ID + "/console"));
            logCore = Boolean.parseBoolean(Platform.getDebugOption(PLUGIN_ID + "/log/core"));
            logCommands = Boolean.parseBoolean(Platform.getDebugOption(PLUGIN_ID + "/log/commands"));
            logDesc = Boolean.parseBoolean(Platform.getDebugOption(PLUGIN_ID + "/log/descriptor"));
            logFacets = Boolean.parseBoolean(Platform.getDebugOption(PLUGIN_ID + "/log/factes"));
            logInternal = Boolean.parseBoolean(Platform.getDebugOption(PLUGIN_ID + "/log/internal"));
            logJaxb = Boolean.parseBoolean(Platform.getDebugOption(PLUGIN_ID + "/log/jaxb"));
            logOperations = Boolean.parseBoolean(Platform.getDebugOption(PLUGIN_ID + "/log/operations"));
            logOsgi = Boolean.parseBoolean(Platform.getDebugOption(PLUGIN_ID + "/log/osgi"));

            traceCore = Boolean.parseBoolean(Platform.getDebugOption(PLUGIN_ID + "/trace/core"));
            traceCommands = Boolean.parseBoolean(Platform.getDebugOption(PLUGIN_ID + "/trace/commands"));
            traceDesc = Boolean.parseBoolean(Platform.getDebugOption(PLUGIN_ID + "/trace/descriptor"));
            traceFacets = Boolean.parseBoolean(Platform.getDebugOption(PLUGIN_ID + "/trace/factes"));
            traceInternal = Boolean.parseBoolean(Platform.getDebugOption(PLUGIN_ID + "/trace/internal"));
            traceJaxb = Boolean.parseBoolean(Platform.getDebugOption(PLUGIN_ID + "/trace/jaxb"));
            traceOperations = Boolean.parseBoolean(Platform.getDebugOption(PLUGIN_ID + "/trace/operations"));
            traceOsgi = Boolean.parseBoolean(Platform.getDebugOption(PLUGIN_ID + "/trace/osgi"));
        } catch (NumberFormatException e) {
            Trace.trace(Trace.ERROR, e.getMessage(), true);
        } catch (NullPointerException e) {
            Trace.trace(Trace.ERROR, e.getMessage(), true);
        }
    }

    // The shared instance
    private static Activator plugin;

    /**
     * The constructor
     */
    public Activator() {
        plugin = this;
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.core.runtime.Plugins#start(org.osgi.framework.BundleContext)
     */
    public void start(BundleContext context) throws Exception {
        super.start(context);
        /*
         * XXX: Do not put any code here that could cause GeronimoServerBehaviourDelegate or
         * GeronimoServerDelegate classes to be loaded. See GERONIMODEVTOOLS-760 for details.
         */
    }
    
    public void startMonitoring() {
        ServerCore.addServerLifecycleListener(new IServerLifecycleListener() {
            public void serverAdded(IServer server) {
                triggerStartUpdateServerTask(server);
            }

            public void serverChanged(IServer server) {
                GeronimoServerBehaviourDelegate delegate = getGeronimoServerBehaviourDelegate(server);
                if (delegate != null) {
                    delegate.resetKernelConnection();
                }
            }

            public void serverRemoved(IServer server) {
            }
        });
        IServer[] servers = ServerCore.getServers();
        for(int i = 0; i < servers.length; i++) {
            triggerStartUpdateServerTask(servers[i]);
        }
    }
    
    final protected GeronimoServerBehaviourDelegate getGeronimoServerBehaviourDelegate (IServer server) {
        GeronimoServerBehaviourDelegate delegate = (GeronimoServerBehaviourDelegate) server.getAdapter(GeronimoServerBehaviourDelegate.class);
        if (delegate == null) {
            delegate = (GeronimoServerBehaviourDelegate) server.loadAdapter(GeronimoServerBehaviourDelegate.class, null);
        }
        return delegate;
    }
    
    /** 
     * <b>triggerStartUpdateServerTask</b> is invoked from:
     * <ul> 
     * <li>The WTP ResourceManager after a new server has been defined (via the WTP NewServerWizard)
     * <li>When a server lifecycle listener has been added (see above)
     * </ul>
     * 
     * @param server 
     */
    private void triggerStartUpdateServerTask(IServer server) {
        GeronimoServerBehaviourDelegate delegate = getGeronimoServerBehaviourDelegate(server);
        if (delegate != null) {
            delegate.startUpdateServerStateTask();
        }
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.core.runtime.Plugin#stop(org.osgi.framework.BundleContext)
     */
    public void stop(BundleContext context) throws Exception {
        ModuleArtifactMapper.getInstance().save();
        super.stop(context);
        plugin = null;
    }

    /**
     * Returns the shared instance
     * 
     * @return the shared instance
     */
    public static Activator getDefault() {
        return plugin;
    }
    
    public static void log(int severity, String message, Throwable throwable) {
        if (plugin != null && plugin.getLog() != null) {
            plugin.getLog().log(new Status(severity, PLUGIN_ID, 0, message, throwable));
        }
    }
}