#!/usr/bin/python

###
# Copyright (c) 2004, Jeremiah Fincher
# All rights reserved.
#
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# 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 author of this software nor the name of
#     contributors to this software may be used to endorse or promote products
#     derived from this software without specific prior written consent.
#
# 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 OWNER 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.
###

"""
This module attempts to capture a specific nick, watching for an oppurtunity to
switch to that nick.
"""

__revision__ = "$Id$"
__author__ = 'Jeremy Fincher (jemfinch) <jemfinch@users.sf.net>'

import supybot.plugins as plugins

import supybot.conf as conf
import supybot.utils as utils
import supybot.privmsgs as privmsgs
import supybot.registry as registry
import supybot.callbacks as callbacks


def configure(advanced):
    # This will be called by setup.py to configure this module.  Advanced is
    # a bool that specifies whether the user identified himself as an advanced
    # user or not.  You should effect your configuration by manipulating the
    # registry as appropriate.
    from supybot.questions import expect, anything, something, yn
    conf.registerPlugin('NickCapture', True)

conf.registerPlugin('NickCapture')
conf.registerGlobalValue(conf.supybot.plugins.NickCapture, 'ison',
    registry.Boolean(True, """Determines whether the bot will check
    occasionally if its preferred nick is in use via the ISON command."""))
conf.registerGlobalValue(conf.supybot.plugins.NickCapture.ison, 'period',
    registry.PositiveInteger(600, """Determines how often (in seconds) the bot
    will check whether its nick ISON."""))

class NickCapture(callbacks.Privmsg):
    def __init__(self):
        callbacks.Privmsg.__init__(self)
        self.lastIson = 0
        
    def _getNick(self):
        return conf.supybot.nick()

    def __call__(self, irc, msg):
        if irc.afterConnect:
            nick = self._getNick()
            if nick and not ircutils.strEqual(nick, irc.nick):
                if nick not in irc.state.nicksToHostmasks:
                    # We don't know if it's online, let's ISON it.
                    self._ison(irc, nick)
                callbacks.Privmsg.__call__(self, irc, msg)

    def _ison(self, irc, nick):
        if self.registryValue('ison'):
            now = time.time()
            if now - self.lastIson > self.registryValue('ison.period'):
                self.lastIson = now
                self._sendIson(nick)
                
    def _sendIson(self, irc, nick):
        self.log.info('Checking if %s ISON %s.', nick, irc.network)
        irc.queueMsg(ircmsgs.ison(nick))

    def _sendNick(self, irc, nick):
        self.log.info('Attempting to switch to nick %s on %s.',
                      nick, irc.network)
        irc.sendMsg(ircmsgs.nick(nick))
        
    def doQuit(self, irc, msg):
        nick = self._getNick()
        if ircutils.strEqual(msg.nick, nick):
            self._sendNick(irc, nick)
            
    def doNick(self, irc, msg):
        nick = self._getNick()
        if ircutils.strEqual(msg.nick, nick):
            self._sendNick(irc, nick)

    def do303(self, irc, msg):
        """This is returned by the ISON command."""
        if not msg.args[1]:
            nick = self._getNick()
            if nick:
                self._sendNick(irc, nick)


Class = NickCapture

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