#!/usr/bin/env python

###
# Copyright (c) 2002, Jeremiah Fincher
# 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.
###

from baseplugin import *

import re
import random

import debug
import ircdb
import ircmsgs
import privmsgs
import callbacks

class Topic(callbacks.Privmsg):
    topicSeparator = ' || '
    topicFormatter = '%s (%s)'
    topicUnformatter = re.compile('(.*) \((.*)\)')
    def addtopic(self, irc, msg, args):
        "[<channel>] (if not sent in the channel itself) <topic>"
        channel = privmsgs.getChannel(msg, args)
        topic = privmsgs.getArgs(args)
        if ircdb.checkCapability(msg.prefix, 'topic'):
            if topic.find(self.topicSeparator) != -1:
                s = 'You can\'t have %s in your topic' % self.topicSeparator
                irc.error(msg, s)
                return
            currentTopic = irc.state.getTopic(channel)
            name = ircdb.users.getUserName(msg.prefix)
            formattedTopic = self.topicFormatter % (topic, name)
            if currentTopic:
                newTopic = self.topicSeparator.join((currentTopic,
                                                     formattedTopic))
            else:
                newTopic = formattedTopic
            irc.queueMsg(ircmsgs.topic(channel, newTopic))
        else:
            irc.error(msg, conf.replyNoCapability % 'topic')

    def shuffletopic(self, irc, msg, args):
        "[<channel>] (if not sent in the channel itself)"
        channel = privmsgs.getChannel(msg, args)
        if ircdb.checkCapability(msg.prefix, 'topic'):
            topics = irc.state.getTopic(channel).split(self.topicSeparator)
            random.shuffle(topics)
            newtopic = self.topicSeparator.join(topics)
            irc.queueMsg(ircmsgs.topic(channel, newtopic))
        else:
            irc.error(msg, conf.replyNoCapability % 'topic')

    def removetopic(self, irc, msg, args):
        "[<channel>] (if not sent in the channel itself) <topic number>"
        channel = privmsgs.getChannel(msg, args)
        try:
            number = int(privmsgs.getArgs(args))
        except ValueError:
            irc.error(msg, 'The argument must be a number.')
            return
        if ircdb.checkCapability(msg.prefix, 'topic'):
            topics = irc.state.getTopic(channel).split(self.topicSeparator)
            topic = topics.pop(number)
            debug.printf(topic)
            (topic, name) = self.topicUnformatter.match(topic).groups()
            if name != ircdb.users.getUserName(msg.prefix) and \
               not ircdb.checkCapabilities(msg.prefix, ('op', 'admin')):
                irc.error('You can only remove your own topics.')
                return
            newTopic = self.topicSeparator.join(topics)
            irc.queueMsg(ircmsgs.topic(channel, newTopic))
        else:
            irc.error(msg, conf.replyNoCapability % 'topic')


Class = Topic