/*
 * 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.camel.component.netty;

import io.netty.channel.Channel;
import io.netty.channel.ChannelPipeline;
import io.netty.handler.codec.DelimiterBasedFrameDecoder;
import io.netty.handler.codec.Delimiters;
import io.netty.handler.codec.string.StringDecoder;
import io.netty.handler.codec.string.StringEncoder;
import io.netty.util.CharsetUtil;

import org.apache.camel.BindToRegistry;
import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.netty.handlers.ClientChannelHandler;
import org.apache.camel.component.netty.handlers.ServerChannelHandler;
import org.junit.Test;

public class NettyCustomPipelineFactoryAsynchTest extends BaseNettyTest {

    private volatile boolean clientInvoked;
    private volatile boolean serverInvoked;

    @BindToRegistry("cpf")
    private TestClientChannelInitializerFactory testClientFactory = new TestClientChannelInitializerFactory(null);

    @BindToRegistry("spf")
    private TestServerChannelPipelineFactory testServerFactory = new TestServerChannelPipelineFactory(null);

    @Override
    protected RouteBuilder createRouteBuilder() throws Exception {
        return new RouteBuilder() {
            @Override
            public void configure() throws Exception {
                from("netty:tcp://localhost:{{port}}?serverInitializerFactory=#spf&textline=true").process(new Processor() {
                    public void process(Exchange exchange) throws Exception {
                        exchange.getOut().setBody("Forrest Gump: We was always taking long walks, and we was always looking for a guy named 'Charlie'");
                    }
                });
            }
        };
    }

    @Test
    public void testCustomClientInitializerFactory() throws Exception {
        String response = (String)template.requestBody("netty:tcp://localhost:{{port}}?clientInitializerFactory=#cpf&textline=true", "Forest Gump describing Vietnam...");

        assertEquals("Forrest Gump: We was always taking long walks, and we was always looking for a guy named 'Charlie'", response);
        assertEquals(true, clientInvoked);
        assertEquals(true, serverInvoked);
    }

    public class TestClientChannelInitializerFactory extends ClientInitializerFactory {
        private int maxLineSize = 1024;
        private NettyProducer producer;

        public TestClientChannelInitializerFactory(NettyProducer producer) {
            this.producer = producer;
        }

        @Override
        protected void initChannel(Channel ch) throws Exception {

            ChannelPipeline channelPipeline = ch.pipeline();
            clientInvoked = true;
            channelPipeline.addLast("decoder-DELIM", new DelimiterBasedFrameDecoder(maxLineSize, true, Delimiters.lineDelimiter()));
            channelPipeline.addLast("decoder-SD", new StringDecoder(CharsetUtil.UTF_8));
            channelPipeline.addLast("encoder-SD", new StringEncoder(CharsetUtil.UTF_8));
            channelPipeline.addLast("handler", new ClientChannelHandler(producer));
        }

        @Override
        public ClientInitializerFactory createPipelineFactory(NettyProducer producer) {
            return new TestClientChannelInitializerFactory(producer);
        }
    }

    public class TestServerChannelPipelineFactory extends ServerInitializerFactory {
        private int maxLineSize = 1024;
        private NettyConsumer consumer;

        public TestServerChannelPipelineFactory(NettyConsumer consumer) {
            this.consumer = consumer;
        }

        @Override
        protected void initChannel(Channel ch) throws Exception {
            ChannelPipeline channelPipeline = ch.pipeline();
            serverInvoked = true;
            channelPipeline.addLast("encoder-SD", new StringEncoder(CharsetUtil.UTF_8));
            channelPipeline.addLast("decoder-DELIM", new DelimiterBasedFrameDecoder(maxLineSize, true, Delimiters.lineDelimiter()));
            channelPipeline.addLast("decoder-SD", new StringDecoder(CharsetUtil.UTF_8));
            channelPipeline.addLast("handler", new ServerChannelHandler(consumer));
        }

        @Override
        public ServerInitializerFactory createPipelineFactory(NettyConsumer consumer) {
            return new TestServerChannelPipelineFactory(consumer);
        }
    }
}