/*
  Copyright (C) 2008-2014 The Communi Project

  You may use this file under the terms of BSD license as follows:

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:
    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
    * Neither the name of the copyright holder nor the names of its
      contributors may be used to endorse or promote products derived
      from this software without specific prior written permission.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR
  ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*!
    \page bot Bot example

    The example presents a simple IRC bot that can handle half a dozen commands.
    This article focuses on handling messages, and parsing and sending commands.
    See the \ref minimal "Minimal example" for basics on setting up an IRC
    connection.

    \image html bot.png "The bot example in action"

    The bot uses IrcCommandParser for parsing commands from messages received
    from other clients. In order to take it in use, the desired commands must
    be first introduced.

    \snippet bot/ircbot.cpp commands

    Some of the commands are context sensitive. Thus, the parser must know
    the list of channels the bot is on. This is easily achieved with help of
    IrcBufferModel.

    \snippet bot/ircbot.cpp channels

    Furthermore, the current target of the parser is later updated whenever
    messages are received and parsed for commands.

    In order for the bot to be able to process private and channel
    messages, it connects to the \ref IrcConnection::messageReceived()
    "IrcConnection::privateMessageReceived()" signal.

    \snippet bot/ircbot.cpp messages

    The current target of the parser, and command triggers are chosen depending
    on whether the received message is a channel or private message. The next
    snippet illustrates how the logic of the bot has been implemented using
    IrcCommandParser.

    \snippet bot/ircbot.cpp receive

    Notice how the help command is implemented as a "custom" command. This is
    because it does not correspond to any actual IRC command, but we want the
    bot to reply with a help message instead of performing an actual command.

    Finally, the last snippet shows the bot in action!

    \code
    [17:42:44] ! CommuniBot172375 (~communi@12.34.56.78) joined #communi
    [17:42:59] <jpnurmi> !say Communi rocks!
    [17:42:59] <CommuniBot172375> Communi rocks!
    [17:44:05] <jpnurmi> CommuniBot172375: nick CommuniRocks
    [17:44:05] ! CommuniBot172375 changed nick to CommuniRocks
    [17:44:18] <jpnurmi> CommuniRocks: quit
    [17:44:19] ! CommuniRocks (~communi@12.34.56.78) has quit (Client Quit)
    \endcode

    Files:
    \li \ref examples/bot/main.cpp
    \li \ref examples/bot/ircbot.h
    \li \ref examples/bot/ircbot.cpp

    \file examples/bot/main.cpp
    \brief \ref bot
    \include examples/bot/main.cpp

    \file examples/bot/ircbot.h
    \brief \ref bot
    \include examples/bot/ircbot.h

    \file examples/bot/ircbot.cpp
    \brief \ref bot
    \include examples/bot/ircbot.cpp
 */