/*
 * Copyright 2012 - 2015 Anton Tananaev (anton.tananaev@gmail.com)
 *
 * 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 org.traccar;

import java.net.InetSocketAddress;
import org.jboss.netty.buffer.ChannelBuffer;
import org.jboss.netty.buffer.ChannelBuffers;
import org.jboss.netty.channel.ChannelEvent;
import org.jboss.netty.channel.ChannelHandler;
import org.jboss.netty.channel.ChannelHandlerContext;
import org.jboss.netty.channel.ChannelPipeline;
import org.jboss.netty.channel.ChannelPipelineFactory;
import org.jboss.netty.channel.ChannelStateEvent;
import org.jboss.netty.channel.Channels;
import org.jboss.netty.channel.DownstreamMessageEvent;
import org.jboss.netty.channel.MessageEvent;
import org.jboss.netty.channel.SimpleChannelHandler;
import org.jboss.netty.handler.logging.LoggingHandler;
import org.jboss.netty.handler.timeout.IdleStateHandler;
import org.traccar.helper.Log;

public abstract class BasePipelineFactory implements ChannelPipelineFactory {

    private final TrackerServer server;
    private final int resetDelay;

    private FilterHandler filterHandler;
    private DistanceHandler distanceHandler;
    private ReverseGeocoderHandler reverseGeocoderHandler;

    private static final class OpenChannelHandler extends SimpleChannelHandler {

        private final TrackerServer server;

        private OpenChannelHandler(TrackerServer server) {
            this.server = server;
        }

        @Override
        public void channelOpen(ChannelHandlerContext ctx, ChannelStateEvent e) {
            server.getChannelGroup().add(e.getChannel());
        }
    }

    private static class StandardLoggingHandler extends LoggingHandler {

        @Override
        public void log(ChannelEvent e) {
            if (e instanceof MessageEvent) {
                MessageEvent event = (MessageEvent) e;
                StringBuilder msg = new StringBuilder();

                msg.append("[").append(String.format("%08X", e.getChannel().getId())).append(": ");
                msg.append(((InetSocketAddress) e.getChannel().getLocalAddress()).getPort());
                if (e instanceof DownstreamMessageEvent) {
                    msg.append(" > ");
                } else {
                    msg.append(" < ");
                }

                if (event.getRemoteAddress() != null) {
                    msg.append(((InetSocketAddress) event.getRemoteAddress()).getHostString());
                } else {
                    msg.append("null");
                }
                msg.append("]");

                if (event.getMessage() instanceof ChannelBuffer) {
                    msg.append(" HEX: ");
                    msg.append(ChannelBuffers.hexDump((ChannelBuffer) event.getMessage()));
                }

                Log.debug(msg.toString());
            }
        }

    }

    public BasePipelineFactory(TrackerServer server, String protocol) {
        this.server = server;

        resetDelay = Context.getConfig().getInteger(protocol + ".resetDelay", 0);

        if (Context.getConfig().getBoolean("filter.enable")) {
            filterHandler = new FilterHandler();
        }

        if (Context.getReverseGeocoder() != null) {
            reverseGeocoderHandler = new ReverseGeocoderHandler(
                    Context.getReverseGeocoder(), Context.getConfig().getBoolean("geocode.processInvalidPositions"));
        }

        if (Context.getConfig().getBoolean("distance.enable")) {
            distanceHandler = new DistanceHandler();
        }
    }

    protected abstract void addSpecificHandlers(ChannelPipeline pipeline);

    @Override
    public ChannelPipeline getPipeline() {
        ChannelPipeline pipeline = Channels.pipeline();
        if (resetDelay != 0) {
            pipeline.addLast("idleHandler", new IdleStateHandler(GlobalTimer.getTimer(), resetDelay, 0, 0));
        }
        pipeline.addLast("openHandler", new OpenChannelHandler(server));
        if (Context.isLoggerEnabled()) {
            pipeline.addLast("logger", new StandardLoggingHandler());
        }
        addSpecificHandlers(pipeline);
        if (filterHandler != null) {
            pipeline.addLast("filter", filterHandler);
        }
        if (distanceHandler != null) {
            pipeline.addLast("distance", distanceHandler);
        }
        if (reverseGeocoderHandler != null) {
            pipeline.addLast("geocoder", reverseGeocoderHandler);
        }
        pipeline.addLast("remoteAddress", new RemoteAddressHandler());

        addDynamicHandlers(pipeline, "extraHandler", "extra.handlers");

        if (Context.getDataManager() != null) {
            pipeline.addLast("dataHandler", new DefaultDataHandler());
        }
        if (Context.getConfig().getBoolean("forward.enable")) {
            pipeline.addLast("webHandler", new WebDataHandler(Context.getConfig().getString("forward.url")));
        }
        pipeline.addLast("mainHandler", new MainEventHandler());
        return pipeline;
    }

    private void addDynamicHandlers(ChannelPipeline pipeline, String id, String key) {
        final String[] extraHandlers = Context.getConfig().getString(key,"").split(",");
        int i = 0;
        for (String extraHandler : extraHandlers) {
            try {
                Class c = Class.forName(extraHandler);
                i++;
                pipeline.addLast(id + "."+i, (ChannelHandler)c.newInstance());
            } catch (Throwable e) {
                Log.error("Error loading handler : " + extraHandler + " " + e);
            }
        }

    }
    
}

@@ -4562,32 +4562,33 @@
 r());%0A        %7D%0A
+%0A
         addSpeci
@@ -4606,24 +4606,25 @@
 (pipeline);%0A
+%0A
         if (
@@ -5054,42 +5054,8 @@
 line
-, %22extraHandler%22, %22extra.handlers%22
 );%0A%0A
@@ -5528,31 +5528,68 @@
 line
-, String id, String key
+) %7B%0A        if (Context.getConfig().hasKey(%22extra.handlers%22)
 ) %7B%0A
@@ -5596,21 +5596,19 @@
         
+  
-final
+ 
  String%5B
@@ -5609,22 +5609,17 @@
 tring%5B%5D 
-extraH
+h
 andlers 
@@ -5654,13 +5654,23 @@
 ing(
-key,%22
+%22extra.handlers
 %22).s
@@ -5692,165 +5692,82 @@
     
-int i = 0;%0A        for (String extraHandler : extraHandlers) %7B%0A            try %7B%0A                Class c = Class.forName(extraHandler);%0A                i++;%0A
+    for (int i = 0; i %3C handlers.length; i++) %7B%0A                try %7B%0A    
     
@@ -5799,17 +5799,26 @@
 ast(
-id + %22.%22+
+%22extraHandler.%22 + 
 i, (
@@ -5832,17 +5832,43 @@
 Handler)
-c
+ Class.forName(handlers%5Bi%5D)
 .newInst
@@ -5888,16 +5888,20 @@
         
+    
 %7D catch 
@@ -5905,102 +5905,147 @@
 ch (
-Throwable e) %7B%0A                Log.error(%22Error loading handler : %22 + extraHandler + %22 %22 + e);
+ClassNotFoundException %7C InstantiationException %7C IllegalAccessException error) %7B%0A                    Log.warning(error);%0A                %7D
 %0A   
@@ -6069,18 +6069,13 @@
   %7D%0A
-%0A
     %7D%0A
-    
 %0A%7D%0A

Clean up adding dynamic handlers