Limnoria/plugins/Herald.py

#!/usr/bin/env python

###
# Copyright (c) 2002, Jeremiah Fincher
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# modification, are permitted provided that the following conditions are met:
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#     this list of conditions, and the following disclaimer.
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#     contributors to this software may be used to endorse or promote products
#     derived from this software without specific prior written consent.
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###

"""
Greets users who join the channel with a recognized hostmask with a nice
little greeting.  Otherwise, can greet 
"""

import plugins

import os
import time

import log
import conf
import utils
import ircdb
import ircmsgs
import ircutils
import privmsgs
import registry
import callbacks


class HeraldDB(object):
    def __init__(self):
        self.heralds = {}
        dataDir = conf.supybot.directories.data()
        self.filename = os.path.join(dataDir, 'Herald.db')
        self.open()

    def open(self):
        dataDir = conf.supybot.directories.data()
        if os.path.exists(self.filename):
            fd = file(self.filename)
            for line in fd:
                line = line.rstrip()
                try:
                    (idChannel, msg) = line.split(':', 1)
                    (id, channel) = idChannel.split(',', 1)
                    id = int(id)
                except ValueError:
                    log.warning('Invalid line in HeraldDB: %r', line)
                    continue
                self.heralds[(id, channel)] = msg
            fd.close()

    def close(self):
        fd = file(self.filename, 'w')
        L = self.heralds.items()
        L.sort()
        for ((id, channel), msg) in L:
            fd.write('%s,%s:%s%s' % (id, channel, msg, os.linesep))
        fd.close()
        
    def getHerald(self, id, channel):
        return self.heralds[(id, channel)]

    def setHerald(self, id, channel, msg):
        self.heralds[(id, channel)] = msg

    def delHerald(self, id, channel):
        del self.heralds[(id, channel)]


conf.registerPlugin('Herald')
conf.registerChannelValue(conf.supybot.plugins.Herald, 'heralding',
    registry.Boolean(True, """Determines whether messages will be sent to the
    channel when a recognized user joins; basically enables or disables the
    plugin."""))
conf.registerChannelValue(conf.supybot.plugins.Herald, 'throttleTime',
    registry.PositiveInteger(600, """Determines the minimum number of seconds
    between heralds."""))
conf.registerChannelValue(conf.supybot.plugins.Herald, 'throttleTimeAfterPart',
    registry.PositiveInteger(60, """Determines the minimum number of seconds
    after parting that the bot will not herald the person when he or she
    rejoins."""))

class Herald(callbacks.Privmsg):
    def __init__(self):
        callbacks.Privmsg.__init__(self)
        self.db = HeraldDB()
        self.lastParts = {}
        self.lastHerald = {}

    def die(self):
        self.db.close()
        callbacks.Privmsg.die(self)

    def doJoin(self, irc, msg):
        channel = msg.args[0]
        if self.registryValue('heralding', channel):
            try:
                id = ircdb.users.getUserId(msg.prefix)
                herald = self.db.getHerald(id, channel)
            except KeyError:
                return
            now = time.time()
            throttle = self.registryValue('throttleTime', channel)
            if now - self.lastHerald.get((id, channel), 0) > throttle:
                if (id, channel) in self.lastParts:
                   i = self.registryValue('throttleTimeAfterPart', channel) 
                   if now - self.lastParts[(id, channel)] < i:
                       return
                self.lastHerald[(id, channel)] = now
                irc.queueMsg(ircmsgs.privmsg(channel, herald))

    def doPart(self, irc, msg):
        try:
            id = self._getId(irc, msg.prefix)
            self.lastParts[(id, msg.args[0])] = time.time()
        except KeyError:
            pass

    def _getId(self, irc, userNickHostmask):
        try:
            id = ircdb.users.getUserId(userNickHostmask)
        except KeyError:
            if not ircutils.isUserHostmask(userNickHostmask):
                hostmask = irc.state.nickToHostmask(userNickHostmask)
                id = ircdb.users.getUserId(hostmask)
            else:
                raise KeyError
        return id

    def add(self, irc, msg, args):
        """[<channel>] <user|nick|hostmask> <msg>

        Sets the herald message for <user> (or the user <nick|hostmask> is
        currently identified or recognized as) to <msg>.  <channel> is only
        necessary if the message isn't sent in the channel itself.
        """
        channel = privmsgs.getChannel(msg, args)
        (userNickHostmask, herald) = privmsgs.getArgs(args, required=2)
        try:
            id = self._getId(irc, userNickHostmask)
        except KeyError:
            irc.errorNoUser()
            return
        self.db.setHerald(id, channel, herald)
        irc.replySuccess()

    def remove(self, irc, msg, args):
        """[<channel>] <user|nick|hostmask>

        Removes the herald message set for <user>, or the user
        <nick|hostmask> is currently identified or recognized as.
        <channel> is only necessary if the message isn't sent in the channel
        itself.
        """
        channel = privmsgs.getChannel(msg, args)
        userNickHostmask = privmsgs.getArgs(args)
        try:
            id = self._getId(irc, userNickHostmask)
        except KeyError:
            irc.errorNoUser()
            return
        self.db.delHerald(id, channel)
        irc.replySuccess()


Class = Herald

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