Limnoria/plugins/Dunno.py

#!/usr/bin/env python

###
# Copyright (c) 2003, Daniel DiPaolo
# All rights reserved.
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# modification, are permitted provided that the following conditions are met:
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#   * 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
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###

"""
The Dunno module is used to spice up the 'replyWhenNotCommand' behavior with
random 'I dunno'-like responses.  If you want something spicier than '<x> is
not a valid command'-like responses, use this plugin.
"""

__revision__ = "$Id$"
__author__ = "Daniel DiPaolo (Strike) <ddipaolo@users.sf.net>"

import os
import time

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

try:
    import sqlite
except ImportError:
    raise callbacks.Error, 'You need to have PySQLite installed to use this ' \
                           'plugin.  Download it at <http://pysqlite.sf.net/>'

dbfilename = os.path.join(conf.supybot.directories.data(), 'Dunno.db')


conf.registerPlugin('Dunno')
conf.registerChannelValue(conf.supybot.plugins.Dunno, 'prefixNick',
    registry.Boolean(True, """Determines whether the bot will prefix the nick
    of the user giving an invalid command to the "dunno" response."""))

class Dunno(callbacks.Privmsg):
    """This plugin was written initially to work with MoobotFactoids, the two
    of them to provide a similar-to-moobot-and-blootbot interface for factoids.
    Basically, it replaces the standard 'Error: <X> is not a valid command.'
    messages with messages kept in a database, able to give more personable
    responses."""
    priority = 100
    def __init__(self):
        callbacks.Privmsg.__init__(self)
        self.makeDb(dbfilename)

    def makeDb(self, filename):
        """create Dunno database and tables"""
        if os.path.exists(filename):
            self.db = sqlite.connect(filename)
            return
        self.db = sqlite.connect(filename, converters={'bool': bool})
        cursor = self.db.cursor()
        cursor.execute("""CREATE TABLE dunnos (
                          id INTEGER PRIMARY KEY,
                          added_by INTEGER,
                          added_at TIMESTAMP,
                          dunno TEXT
                          )""")
        self.db.commit()

    def invalidCommand(self, irc, msg, tokens):
        cursor = self.db.cursor()
        cursor.execute("""SELECT dunno
                          FROM dunnos
                          ORDER BY random()
                          LIMIT 1""")
        if cursor.rowcount != 0:
            prefixName = self.registryValue('prefixNick', msg.args[0])
            dunno = cursor.fetchone()[0]
            dunno = plugins.standardSubstitute(irc, msg, dunno)
            irc.reply(dunno, prefixName=prefixName)

    def add(self, irc, msg, args):
        """<text>

        Adds <text> as a "dunno" to be used as a random response when no
        command or factoid key matches.  Can optionally contain '$who', which
        will be replaced by the user's name when the dunno is displayed.
        """
        # Must be registered to use this
        try:
            user_id = ircdb.users.getUserId(msg.prefix)
        except KeyError:
            irc.errorNotRegistered()
            return
        text = privmsgs.getArgs(args)
        cursor = self.db.cursor()
        at = int(time.time())
        cursor.execute("""INSERT INTO dunnos VALUES(NULL, %s, %s, %s)""",
                          user_id, at, text)
        self.db.commit()
        cursor.execute("""SELECT id FROM dunnos WHERE added_at=%s""", at)
        id = cursor.fetchone()[0]
        irc.replySuccess('Dunno #%s added.' % id)

    def remove(self, irc, msg, args):
        """<id>

        Removes dunno with the given <id>.
        """
        # Must be registered to use this
        try:
            user_id = ircdb.users.getUserId(msg.prefix)
        except KeyError:
            irc.errorNotRegistered()
            return
        dunno_id = privmsgs.getArgs(args, required=1)
        cursor = self.db.cursor()
        cursor.execute("""SELECT added_by, dunno FROM dunnos
                          WHERE id=%s""", dunno_id)
        if cursor.rowcount == 0:
            irc.error('No dunno with id #%s.' % dunno_id)
            return
        (added_by, dunno) = cursor.fetchone()
        if not (ircdb.checkCapability(user_id, 'admin') or \
                added_by == user_id):
            irc.error('Only admins and the dunno creator may delete a dunno.')
            return
        cursor.execute("""DELETE FROM dunnos WHERE id=%s""", dunno_id)
        self.db.commit()
        irc.replySuccess()

    def search(self, irc, msg, args):
        """<text>

        Search for dunno containing the given text.  Returns the ids of the
        dunnos with the text in them.
        """
        text = privmsgs.getArgs(args, required=1)
        glob = "%" + text + "%"
        cursor = self.db.cursor()
        cursor.execute("""SELECT id FROM dunnos WHERE dunno LIKE %s""", glob)
        if cursor.rowcount == 0:
            irc.error('No dunnos with %r found.' % text)
            return
        ids = [str(t[0]) for t in cursor.fetchall()]
        s = 'Dunno search for %r (%s found): %s.' % \
            (text, len(ids), utils.commaAndify(ids))
        irc.reply(s)

    def get(self, irc, msg, args):
        """<id>

        Display the text of the dunno with the given id.
        """
        id = privmsgs.getArgs(args, required=1)
        try:
            id = int(id)
        except ValueError:
            irc.error('%r is not a valid dunno id.' % id)
            return
        cursor = self.db.cursor()
        cursor.execute("""SELECT dunno FROM dunnos WHERE id=%s""", id)
        if cursor.rowcount == 0:
            irc.error('No dunno found with id #%s.' % id)
            return
        dunno = cursor.fetchone()[0]
        irc.reply("Dunno #%s: %r." % (id, dunno))

    def change(self, irc, msg, args):
        """<id> <regexp>

        Alters the dunno with the given id according to the provided regexp.
        """
        id, regexp = privmsgs.getArgs(args, required=2)
        # Must be registered to use this
        try:
            user_id = ircdb.users.getUserId(msg.prefix)
        except KeyError:
            irc.errorNotRegistered()
            return
        # Check id arg
        try:
            id = int(id)
        except ValueError:
            irc.error('%r is not a valid dunno id.' % id)
            return
        cursor = self.db.cursor()
        cursor.execute("""SELECT dunno FROM dunnos WHERE id=%s""", id)
        if cursor.rowcount == 0:
            irc.error('There is no dunno #%s.' % id)
            return
        try:
            replacer = utils.perlReToReplacer(regexp)
        except:
            irc.error('%r is not a valid regular expression.' % regexp)
            return
        dunno = cursor.fetchone()[0]
        new_dunno = replacer(dunno)
        cursor.execute("""UPDATE dunnos SET dunno=%s WHERE id=%s""",
                       new_dunno, id)
        self.db.commit()
        irc.replySuccess()

    def stats(self, irc, msg, args):
        """Returns the number of dunnos in the dunno database."""
        cursor = self.db.cursor()
        cursor.execute("""SELECT COUNT(*) FROM dunnos""")
        num = int(cursor.fetchone()[0])
        irc.reply('There %s %s in my database.' %
                  (utils.be(num), utils.nItems('dunno', num)))



Class = Dunno

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