Limnoria/plugins/Poll.py

309 lines
12 KiB
Python

#!/usr/bin/python
# -*- coding:utf-8 -*-
###
# Copyright (c) 2002, Stéphan Kochen
# 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.
###
"""
A module for managing and voting on polls.
"""
__revision__ = "$Id$"
import plugins
import os
import time
import conf
import utils
import ircdb
import ircutils
import privmsgs
import 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/>'
def configure(onStart, afterConnect, advanced):
# This will be called by setup.py to configure this module. onStart and
# afterConnect are both lists. Append to onStart the commands you would
# like to be run when the bot is started; append to afterConnect the
# commands you would like to be run when the bot has finished connecting.
from questions import expect, anything, something, yn
onStart.append('load Poll')
class Poll(callbacks.Privmsg, plugins.ChannelDBHandler):
def __init__(self):
callbacks.Privmsg.__init__(self)
plugins.ChannelDBHandler.__init__(self)
def makeDb(self, filename):
if os.path.exists(filename):
db = sqlite.connect(filename)
else:
db = sqlite.connect(filename)
cursor = db.cursor()
cursor.execute("""CREATE TABLE polls (
id INTEGER PRIMARY KEY,
question TEXT UNIQUE ON CONFLICT IGNORE,
started_by INTEGER,
open INTEGER)""")
cursor.execute("""CREATE TABLE options (
id INTEGER PRIMARY KEY,
poll_id INTEGER,
option TEXT,
UNIQUE (poll_id, id) ON CONFLICT IGNORE)""")
cursor.execute("""CREATE TABLE votes (
user_id INTEGER,
poll_id INTEGER,
option_id INTEGER,
UNIQUE (user_id, poll_id)
ON CONFLICT IGNORE)""")
db.commit()
return db
def open(self, irc, msg, args):
"""[<channel>] <question>
Creates a new poll with the given question.
"""
channel = privmsgs.getChannel(msg, args)
question = privmsgs.getArgs(args)
# Must be registered to create a poll
try:
userId = ircdb.users.getUserId(msg.prefix)
except KeyError:
irc.error(msg, conf.replyNotRegistered)
return
db = self.getDb(channel)
cursor = db.cursor()
cursor.execute("""INSERT INTO polls
VALUES (NULL, %s, %s, 1)""",
question, userId)
db.commit()
cursor.execute("""SELECT id FROM polls WHERE question=%s""", question)
id = cursor.fetchone()[0]
irc.reply(msg, '%s (poll #%s)' % (conf.replySuccess, id))
def close(self, irc, msg, args):
"""[<channel>] <id>
Closes the poll with the given <id>; further votes will not be allowed.
"""
channel = privmsgs.getChannel(msg, args)
id = privmsgs.getArgs(args)
try:
id = int(id)
except ValueError:
irc.error(msg, 'The id must be an integer.')
return
db = self.getDb(channel)
cursor = db.cursor()
# Check to make sure that the poll exists
cursor.execute("""SELECT id FROM polls WHERE id=%s""", id)
if cursor.rowcount == 0:
irc.error(msg, 'Id #%s is not an existing poll.')
return
cursor.execute("""UPDATE polls SET open=0 WHERE id=%s""", id)
irc.reply(msg, conf.replySuccess)
def add(self, irc, msg, args):
"""[<channel>] <id> <option text>
Add an option with the given text to the poll with the given id.
"""
channel = privmsgs.getChannel(msg, args)
(poll_id, option) = privmsgs.getArgs(args, required=2)
try:
poll_id = int(poll_id)
except ValueError:
irc.error(msg, 'The id must be an integer.')
return
try:
userId = ircdb.users.getUserId(msg.prefix)
except KeyError:
irc.error(msg, conf.replyNotRegistered)
return
db = self.getDb(channel)
cursor = db.cursor()
cursor.execute("""SELECT started_by FROM polls
WHERE id=%s""",
poll_id)
if cursor.rowcount == 0:
irc.error(msg, 'There is no such poll.')
return
if not ((userId == cursor.fetchone()[0]) or
(ircdb.checkCapability(userId, 'admin'))):
irc.error(msg, 'That poll isn\'t yours and you aren\'t an admin.')
return
cursor.execute("""INSERT INTO options VALUES
(NULL, %s, %s)""",
poll_id, option)
irc.reply(msg, conf.replySuccess)
def vote(self, irc, msg, args):
"""[<channel>] <poll id> <option id>
Vote for the option with the given id on the poll with the given poll
id. This command can also be used to override any previous vote.
"""
channel = privmsgs.getChannel(msg, args)
(poll_id, option_id) = privmsgs.getArgs(args, required=2)
try:
poll_id = int(poll_id)
option_id = int(option_id)
except ValueError:
irc.error(msg, 'The poll id and option id '
'arguments must be an integers.')
return
try:
userId = ircdb.users.getUserId(msg.prefix)
except KeyError:
irc.error(msg, conf.replyNotRegistered)
return
db = self.getDb(channel)
cursor = db.cursor()
cursor.execute("""SELECT open
FROM polls WHERE id=%s""",
poll_id)
if cursor.rowcount == 0:
irc.error(msg, 'There is no such poll.')
return
elif cursor.fetchone()[0] == 0:
irc.error(msg, 'That poll is closed.')
return
cursor.execute("""SELECT id FROM options
WHERE poll_id=%s
AND id=%s""",
poll_id, option_id)
if cursor.rowcount == 0:
irc.error(msg, 'There is no such option.')
return
cursor.execute("""SELECT option_id FROM votes
WHERE user_id=%s AND poll_id=%s""",
userId, poll_id)
if cursor.rowcount == 0:
cursor.execute("""INSERT INTO votes VALUES (%s, %s, %s)""",
userId, poll_id, option_id)
else:
cursor.execute("""UPDATE votes SET option_id=%s
WHERE user_id=%s AND poll_id=%s""",
option_id, userId, poll_id)
irc.reply(msg, conf.replySuccess)
def results(self, irc, msg, args):
"""[<channel>] <id>
Shows the results for the poll with the given id.
"""
channel = privmsgs.getChannel(msg, args)
poll_id = privmsgs.getArgs(args)
try:
poll_id = int(poll_id)
except ValueError:
irc.error(msg, 'The id argument must be an integer.')
return
db = self.getDb(channel)
cursor = db.cursor()
cursor.execute("""SELECT id, question, started_by, open
FROM polls WHERE id=%s""",
poll_id)
if cursor.rowcount == 0:
irc.error(msg, 'There is no such poll.')
return
(id, question, startedBy, open) = cursor.fetchone()
try:
startedBy = ircdb.users.getUser(msg.prefix).name
except KeyError:
startedBy = 'an unknown user'
return
reply = 'Results for poll #%s: "%s" by %s' % \
(id, question, startedBy)
cursor.execute("""SELECT count(user_id), option_id
FROM votes
WHERE poll_id=%s
GROUP BY option_id
ORDER BY count(user_id) DESC""",
poll_id)
if cursor.rowcount == 0:
s = 'This poll has no votes yet.'
else:
results = []
for count, option_id in cursor.fetchall():
cursor.execute("""SELECT option FROM options
WHERE id=%s""", option_id)
option = cursor.fetchone()[0]
results.append('%s: %s' % (option, count))
s = utils.commaAndify(results)
reply += ' - %s' % s
irc.reply(msg, reply)
def list(self, irc, msg, args):
"""takes no arguments.
Lists the currently open polls for the channel and their ids.
"""
channel = privmsgs.getChannel(msg, args)
db = self.getDb(channel)
cursor = db.cursor()
cursor.execute("""SELECT id, question FROM polls WHERE open=1""")
if cursor.rowcount == 0:
irc.reply(msg, 'This channel currently has no open polls.')
return
polls = ['#%s: %r' % (id, q) for id, q in cursor.fetchall()]
irc.reply(msg, utils.commaAndify(polls))
def options(self, irc, msg, args):
"""<id>
Lists the options for the poll with the given id.
"""
channel = privmsgs.getChannel(msg, args)
poll_id = privmsgs.getArgs(args)
db = self.getDb(channel)
cursor = db.cursor()
cursor.execute("""SELECT id, option FROM options
WHERE poll_id=%s""",
poll_id)
if cursor.rowcount == 0:
irc.reply(msg, 'This poll has no options yet '
'or no such poll exists.')
return
options = ['%s: %r' % (id, o) for id, o in cursor.fetchall()]
irc.reply(msg, utils.commaAndify(options))
Class = Poll
# vim:set shiftwidth=4 tabstop=8 expandtab textwidth=78: