/*
 * 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.karaf.shell.impl.console.osgi;

import java.io.Closeable;
import java.util.HashMap;
import java.util.Map;

import org.apache.felix.service.command.CommandSession;
import org.apache.felix.service.command.CommandSessionListener;
import org.osgi.framework.BundleContext;
import org.osgi.service.event.Event;
import org.osgi.service.event.EventAdmin;
import org.osgi.util.tracker.ServiceTracker;

public class EventAdminListener implements CommandSessionListener, Closeable
{

    private ServiceTracker<EventAdmin, EventAdmin> tracker;

    public EventAdminListener(BundleContext bundleContext)
    {
        tracker = new ServiceTracker<>(bundleContext, EventAdmin.class.getName(), null);
        tracker.open();
    }

    public void close() {
        tracker.close();
    }

    public void beforeExecute(CommandSession session, CharSequence command) {
        if (command.toString().trim().length() > 0) {
            EventAdmin admin = tracker.getService();
            if (admin != null) {
                Map<String, Object> props = new HashMap<>();
                props.put("command", command.toString());
                Event event = new Event("org/apache/karaf/shell/console/EXECUTING", props);
                admin.postEvent(event);
            }
        }
    }

    public void afterExecute(CommandSession session, CharSequence command, Exception exception) {
    }

    public void afterExecute(CommandSession session, CharSequence command, Object result) {
    }

}

@@ -1671,24 +1671,409 @@
  command) %7B%0A
+    %7D%0A%0A    public void afterExecute(CommandSession session, CharSequence command, Exception exception) %7B%0A        sendEvent(command, null, exception);%0A    %7D%0A%0A    public void afterExecute(CommandSession session, CharSequence command, Object result) %7B%0A        sendEvent(command, result, null);%0A    %7D%0A%0A    private void sendEvent(CharSequence command, Object result, Exception exception) %7B%0A
         if (
@@ -2339,124 +2339,83 @@
     
-Event even
+if (resul
 t 
+!
 = n
-ew Event(%22org/apache/karaf/shell/console/EXECUTING%22, props);%0A                admin.postEvent(event);%0A
+ull) %7B%0A                    props.put(%22result%22, result);%0A    
     
@@ -2436,101 +2436,81 @@
     
-%7D%0A
     
-%7D%0A%0A
     
-public void afterExecute(CommandSession session, CharSequence command, E
+if (exception != null) %7B%0A                    props.put(%22e
 xception
  exc
@@ -2497,32 +2497,34 @@
 s.put(%22exception
+%22,
  exception) %7B%0A  
@@ -2522,109 +2522,182 @@
 ion)
- %7B%0A
+;%0A           
     
+ 
 %7D
-%0A
 %0A    
-public void afterExecute(CommandSession session, CharSequence command, Object result) %7B
+            Event event = new Event(%22org/apache/karaf/shell/console/EXECUTED%22, props);%0A                admin.postEvent(event);%0A            %7D%0A        %7D
 %0A   

Send an event to EventAdmin after having executed a command in the shell and include the result / exception