Limnoria/plugins/Later.py

###
# 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,
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#     documentation and/or other materials provided with the distribution.
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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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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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###

"""
Informal notes, mostly for compatibility with other bots.  Based entirely on
nicks, it's an easy way to tell users who refuse to register notes when they
arrive later.
"""

import supybot

__revision__ = "$Id$"
__author__ = supybot.authors.jemfinch

import supybot.plugins as plugins

import csv
import time

import supybot.log as log
import supybot.conf as conf
import supybot.utils as utils
from supybot.commands import *
import supybot.ircutils as ircutils
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('Later', True)

conf.registerPlugin('Later')
conf.registerGlobalValue(conf.supybot.plugins.Later, 'maximum',
    registry.NonNegativeInteger(0, """Determines the maximum number of messages
    to be queued for a user.  If this value is 0, there is no maximum."""))
conf.registerGlobalValue(conf.supybot.plugins.Later, 'private',
    registry.Boolean(True, """Determines whether users will be notified in the
    first place in which they're seen, or in private."""))

class Later(callbacks.Privmsg):
    """Used to do things later; currently, it only allows the sending of
    nick-based notes.  Do note (haha!) that these notes are *not* private
    and don't even pretend to be; if you want such features, consider using the
    Note plugin."""
    def __init__(self):
        callbacks.Privmsg.__init__(self)
        self._notes = ircutils.IrcDict()
        self.wildcards = []
        self.filename = conf.supybot.directories.data.dirize('Later.db')
        self._openNotes()

    def die(self):
        self._flushNotes()

    def _flushNotes(self):
        fd = utils.transactionalFile(self.filename)
        writer = csv.writer(fd)
        for (nick, notes) in self._notes.iteritems():
            for (time, whence, text) in notes:
                writer.writerow([nick, time, whence, text])
        fd.close()

    def _openNotes(self):
        try:
            fd = file(self.filename)
        except EnvironmentError, e:
            self.log.warning('Couldn\'t open %s: %s', self.filename, e)
            return
        reader = csv.reader(fd)
        for (nick, time, whence, text) in reader:
            self._addNote(nick, whence, text, at=float(time), maximum=0)
        fd.close()

    def _timestamp(self, when):
        #format = conf.supybot.reply.format.time()
        diff = time.time() - when
        try:
            return utils.timeElapsed(diff, seconds=False) + ' ago'
        except ValueError:
            return 'just now'
        
    def _addNote(self, nick, whence, text, at=None, maximum=None):
        if at is None:
            at = time.time()
        if maximum is None:
            maximum = self.registryValue('maximum')
        try:
            notes = self._notes[nick]
            if maximum and len(notes) >= maximum:
                raise ValueError
            else:
                notes.append((at, whence, text))
        except KeyError:
            self._notes[nick] = [(at, whence, text)]
        if '?' in nick or '*' in nick and nick not in self.wildcards:
            self.wildcards.append(nick)
        self._flushNotes()
        
    def tell(self, irc, msg, args, nick, text):
        """<nick> <text>

        Tells <nick> <text> the next time <nick> is in seen.  <nick> can
        contain wildcard characters, and the first matching nick will be
        given the note.
        """
        if ircutils.strEqual(nick, irc.nick):
            irc.error('I can\'t send notes to myself.')
            return
        try:
            self._addNote(nick, msg.nick, text)
            irc.replySuccess()
        except ValueError:
            irc.error('That person\'s message queue is already full.')
    tell = wrap(tell, ['nick', 'text'])

    def notes(self, irc, msg, args, nick):
        """[<nick>]

        If <nick> is given, replies with what notes are waiting on <nick>,
        otherwise, replies with the nicks that have notes waiting for them.
        """
        if nick:
            if nick in self._notes:
                notes = [self._formatNote(when, whence, note)
                         for (when, whence, note) in self._notes[nick]]
                irc.reply(utils.commaAndify(notes))
            else:
                irc.error('I have no notes for that nick.')
        else:
            nicks = self._notes.keys()
            utils.sortBy(ircutils.toLower, nicks)
            irc.reply('I currently have notes waiting for %s.' %
                      utils.commaAndify(nicks))
    notes = wrap(notes, [additional('something')])
    
    def doPrivmsg(self, irc, msg):
        notes = self._notes.pop(msg.nick, [])
        # Let's try wildcards.
        removals = []
        for wildcard in self.wildcards:
            if ircutils.hostmaskPatternEqual(wildcard, msg.nick):
                removals.append(wildcard)
                notes.extend(self._notes.pop(wildcard))
            for removal in removals:
                self.wildcards.remove(removal)
        if notes:
            irc = callbacks.SimpleProxy(irc, msg)
            private = self.registryValue('private')
            for (when, whence, note) in notes:
                s = self._formatNote(when, whence, note)
                irc.reply(s, private=private)
            self._flushNotes()

    def _formatNote(self, when, whence, note):
        return 'Sent %s: <%s> %s' % (self._timestamp(when), whence, note)
            


Class = Later

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