/**
 * 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.irc;

import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import org.apache.camel.impl.DefaultConsumer;
import org.schwering.irc.lib.IRCConnection;
import org.schwering.irc.lib.IRCEventAdapter;
import org.schwering.irc.lib.IRCModeParser;
import org.schwering.irc.lib.IRCUser;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class IrcConsumer extends DefaultConsumer {
    private static final transient Logger LOG = LoggerFactory.getLogger(IrcConsumer.class);

    private final IrcConfiguration configuration;
    private final IrcEndpoint endpoint;
    private final IRCConnection connection;
    private  IRCEventAdapter listener;

    public IrcConsumer(IrcEndpoint endpoint, Processor processor, IRCConnection connection) {
        super(endpoint, processor);
        this.endpoint = endpoint;
        this.connection = connection;
        this.configuration = endpoint.getConfiguration();
    }

    @Override
    protected void doStop() throws Exception {
        if (connection != null) {
            for (String channel : endpoint.getConfiguration().getChannels()) {
                if (LOG.isDebugEnabled()) {
                    LOG.debug("Parting: " + channel);
                }
                connection.doPart(channel);
            }
            connection.removeIRCEventListener(listener);
        }
        super.doStop();
    }

    @Override
    protected void doStart() throws Exception {
        super.doStart();
        listener = getListener();
        connection.addIRCEventListener(listener);
        endpoint.joinChannels();
    }

    public IRCConnection getConnection() {
        return connection;
    }

    public IRCEventAdapter getListener() {
        if (listener == null) {
            listener = new FilteredIRCEventAdapter();
        }
        return listener;
    }

    public void setListener(IRCEventAdapter listener) {
        this.listener = listener;
    }

    class FilteredIRCEventAdapter extends IRCEventAdapter {

        @Override
        public void onNick(IRCUser user, String newNick) {
            if (configuration.isOnNick()) {
                Exchange exchange = endpoint.createOnNickExchange(user, newNick);
                try {
                    getProcessor().process(exchange);
                } catch (Exception e) {
                    handleException(e);
                }
            }
        }

        @Override
        public void onQuit(IRCUser user, String msg) {
            if (configuration.isOnQuit()) {
                Exchange exchange = endpoint.createOnQuitExchange(user, msg);
                try {
                    getProcessor().process(exchange);
                } catch (Exception e) {
                    handleException(e);
                }
            }
        }

        @Override
        public void onJoin(String channel, IRCUser user) {
            if (configuration.isOnJoin()) {
                Exchange exchange = endpoint.createOnJoinExchange(channel, user);
                try {
                    getProcessor().process(exchange);
                } catch (Exception e) {
                    handleException(e);
                }
            }
        }

        @Override
        public void onKick(String channel, IRCUser user, String passiveNick, String msg) {

            // check to see if I got kick and if so rejoin if autoRejoin is on
            if (passiveNick.equals(connection.getNick()) && configuration.isAutoRejoin()) {
                endpoint.joinChannel(channel);
            }

            if (configuration.isOnKick()) {
                Exchange exchange = endpoint.createOnKickExchange(channel, user, passiveNick, msg);
                try {
                    getProcessor().process(exchange);
                } catch (Exception e) {
                    handleException(e);
                }
            }
        }

        @Override
        public void onMode(String channel, IRCUser user, IRCModeParser modeParser) {
            if (configuration.isOnMode()) {
                Exchange exchange = endpoint.createOnModeExchange(channel, user, modeParser);
                try {
                    getProcessor().process(exchange);
                } catch (Exception e) {
                    handleException(e);
                }
            }
        }

        @Override
        public void onPart(String channel, IRCUser user, String msg) {
            if (configuration.isOnPart()) {
                Exchange exchange = endpoint.createOnPartExchange(channel, user, msg);
                try {
                    getProcessor().process(exchange);
                } catch (Exception e) {
                    handleException(e);
                }
            }
        }

        @Override
        public void onReply(int num, String value, String msg) {
            if (configuration.isOnReply()) {
                Exchange exchange = endpoint.createOnReplyExchange(num, value, msg);
                try {
                    getProcessor().process(exchange);
                } catch (Exception e) {
                    handleException(e);
                }
            }
        }

        @Override
        public void onTopic(String channel, IRCUser user, String topic) {
            if (configuration.isOnTopic()) {
                Exchange exchange = endpoint.createOnTopicExchange(channel, user, topic);
                try {
                    getProcessor().process(exchange);
                } catch (Exception e) {
                    handleException(e);
                }
            }
        }

        @Override
        public void onPrivmsg(String target, IRCUser user, String msg) {
            if (configuration.isOnPrivmsg()) {
                Exchange exchange = endpoint.createOnPrivmsgExchange(target, user, msg);
                try {
                    getProcessor().process(exchange);
                } catch (Exception e) {
                    handleException(e);
                }
            }
        }

        @Override
        public void onError(int num, String msg) {
        }

    }

}
