###
# Copyright (c) 2004, Jeremiah Fincher
# Copyright (c) 2009, James Vega
# All rights reserved.
#
# 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 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.
###

import time

import supybot.ircdb as ircdb
import supybot.ircmsgs as ircmsgs
import supybot.ircutils as ircutils
import supybot.schedule as schedule
import supybot.callbacks as callbacks

class Continue(Exception):
    pass # Used below, look in the "do" function nested in doJoin.

class AutoMode(callbacks.Plugin):
    def doJoin(self, irc, msg):
        channel = msg.args[0]
        if ircutils.strEqual(irc.nick, msg.nick):
            return
        if not self.registryValue('enable', channel):
            return
        fallthrough = self.registryValue('fallthrough', channel)
        def do(type):
            if ircdb.checkCapability(msg.prefix, 'owner') and not \
               self.registryValue('owner'):
                raise Continue
            cap = ircdb.makeChannelCapability(channel, type)
            if ircdb.checkCapability(msg.prefix, cap):
                if self.registryValue(type, channel):
                    self.log.info('Sending auto-%s of %s in %s.',
                                  type, msg.prefix, channel)
                    msgmaker = getattr(ircmsgs, type)
                    irc.queueMsg(msgmaker(channel, msg.nick))
                    raise Continue # Even if fallthrough, let's only do one.
                elif not fallthrough:
                    self.log.debug('%s has %s, but supybot.plugins.AutoMode.%s'
                                   ' is not enabled in %s, refusing to fall '
                                   'through.', msg.prefix, cap, type, channel)
                    raise Continue
        try:
            do('op')
            if 'h' in irc.state.supported['prefix']:
                do('halfop')
            do('voice')
        except Continue:
            return
        c = ircdb.channels.getChannel(channel)
        if c.checkBan(msg.prefix) and self.registryValue('ban', channel):
            period = self.registryValue('ban.period', channel)
            if period:
                def unban():
                    try:
                        if msg.prefix in irc.state.channels[channel].bans:
                            irc.queueMsg(ircmsgs.unban(channel, msg.prefix))
                    except KeyError:
                        # We're not in the channel anymore.
                        pass
                schedule.addEvent(unban, time.time()+period)
            banmask =conf.supybot.protocols.irc.banmask.makeBanmask(msg.prefix)
            irc.queueMsg(ircmsgs.ban(channel, banmask))
            irc.queueMsg(ircmsgs.kick(channel, msg.nick))


Class = AutoMode

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