mirror of https://github.com/Mikaela/Limnoria.git
400 lines
15 KiB
Python
400 lines
15 KiB
Python
# -*- coding:utf-8 -*-
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###
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# Copyright (c) 2002, Stéphan Kochen
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice,
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# this list of conditions, and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions, and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# * Neither the name of the author of this software nor the name of
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# contributors to this software may be used to endorse or promote products
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# derived from this software without specific prior written consent.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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###
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"""
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A module for managing and voting on polls.
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"""
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import supybot
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__revision__ = "$Id$"
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__author__ = supybot.authors.strike
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import supybot.plugins as plugins
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import os
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import time
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import supybot.dbi as dbi
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import supybot.conf as conf
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import supybot.utils as utils
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import supybot.ircdb as ircdb
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from supybot.commands import *
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import supybot.ircutils as ircutils
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import supybot.callbacks as callbacks
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class PollError(Exception):
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pass
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class OptionRecord(dbi.Record):
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__fields__ = [
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'text',
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'votes'
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]
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def __str__(self):
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return '#%s: %s' % (self.id, utils.quoted(self.text))
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class PollRecord(dbi.Record):
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__fields__ = [
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'by',
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'question',
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'options',
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'status'
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]
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def __str__(self):
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format = conf.supybot.reply.format.time()
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user = plugins.getUserName(self.by)
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if self.options:
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options = 'Options: %s' % '; '.join(map(str, self.options))
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else:
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options = 'The poll has no options, yet'
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if self.status:
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status = 'open'
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else:
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status = 'closed'
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return 'Poll #%s: %s started by %s. %s. Poll is %s.' % \
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(self.id, utils.quoted(self.question), user, options, status)
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class SqlitePollDB(object):
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def __init__(self, filename):
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self.dbs = ircutils.IrcDict()
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self.filename = filename
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def close(self):
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for db in self.dbs.itervalues():
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db.close()
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def _getDb(self, channel):
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try:
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import sqlite
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except ImportError:
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raise callbacks.Error, 'You need to have PySQLite installed to ' \
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'use this plugin. Download it at ' \
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'<http://pysqlite.sf.net/>'
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filename = plugins.makeChannelFilename(self.filename, channel)
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if filename in self.dbs:
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return self.dbs[filename]
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if os.path.exists(filename):
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self.dbs[filename] = sqlite.connect(filename)
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return self.dbs[filename]
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db = sqlite.connect(filename)
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self.dbs[filename] = db
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cursor = db.cursor()
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cursor.execute("""CREATE TABLE polls (
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id INTEGER PRIMARY KEY,
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question TEXT UNIQUE ON CONFLICT IGNORE,
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started_by INTEGER,
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open INTEGER)""")
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cursor.execute("""CREATE TABLE options (
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id INTEGER,
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poll_id INTEGER,
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option TEXT,
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UNIQUE (poll_id, id) ON CONFLICT IGNORE)""")
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cursor.execute("""CREATE TABLE votes (
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user_id INTEGER,
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poll_id INTEGER,
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option_id INTEGER,
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UNIQUE (user_id, poll_id)
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ON CONFLICT IGNORE)""")
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db.commit()
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return db
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def get(self, channel, poll_id):
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db = self._getDb(channel)
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cursor = db.cursor()
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cursor.execute("""SELECT question, started_by, open
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FROM polls WHERE id=%s""", poll_id)
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if cursor.rowcount:
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(question, by, status) = cursor.fetchone()
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else:
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raise dbi.NoRecordError
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cursor.execute("""SELECT id, option FROM options WHERE poll_id=%s""",
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poll_id)
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if cursor.rowcount:
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options = [OptionRecord(i, text=o, votes=0)
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for (i, o) in cursor.fetchall()]
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else:
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options = []
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return PollRecord(poll_id, question=question, status=status, by=by,
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options=options)
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def open(self, channel, user, question):
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db = self._getDb(channel)
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cursor = db.cursor()
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cursor.execute("""INSERT INTO polls VALUES (NULL, %s, %s, 1)""",
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question, user.id)
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db.commit()
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cursor.execute("""SELECT id FROM polls WHERE question=%s""", question)
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return cursor.fetchone()[0]
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def closePoll(self, channel, id):
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db = self._getDb(channel)
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cursor = db.cursor()
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# Check to make sure that the poll exists
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cursor.execute("""SELECT id FROM polls WHERE id=%s""", id)
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if cursor.rowcount == 0:
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raise dbi.NoRecordError
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cursor.execute("""UPDATE polls SET open=0 WHERE id=%s""", id)
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db.commit()
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def add(self, channel, user, id, option):
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db = self._getDb(channel)
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cursor = db.cursor()
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# Only the poll starter or an admin can add options
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cursor.execute("""SELECT started_by FROM polls
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WHERE id=%s""",
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id)
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if cursor.rowcount == 0:
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raise dbi.NoRecordError
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if not ((user.id == cursor.fetchone()[0]) or
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(ircdb.checkCapability(user.id, 'admin'))):
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raise PollAddError, \
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'That poll isn\'t yours and you aren\'t an admin.'
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# and NOBODY can add options once a poll has votes
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cursor.execute("""SELECT COUNT(user_id) FROM votes
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WHERE poll_id=%s""",
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id)
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if int(cursor.fetchone()[0]) != 0:
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raise PollAddError, 'Cannot add options to a poll with votes.'
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# Get the next highest id
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cursor.execute("""SELECT MAX(id)+1 FROM options
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WHERE poll_id=%s""",
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id)
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option_id = cursor.fetchone()[0] or 1
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cursor.execute("""INSERT INTO options VALUES
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(%s, %s, %s)""",
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option_id, id, option)
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db.commit()
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def vote(self, channel, user, id, option):
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db = self._getDb(channel)
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cursor = db.cursor()
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cursor.execute("""SELECT open
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FROM polls WHERE id=%s""",
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id)
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if cursor.rowcount == 0:
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raise dbi.NoRecordError
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elif int(cursor.fetchone()[0]) == 0:
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raise PollError, 'That poll is closed.'
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cursor.execute("""SELECT id FROM options
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WHERE poll_id=%s
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AND id=%s""",
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id, option)
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if cursor.rowcount == 0:
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raise PollError, 'There is no such option.'
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cursor.execute("""SELECT option_id FROM votes
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WHERE user_id=%s AND poll_id=%s""",
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user.id, id)
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if cursor.rowcount == 0:
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cursor.execute("""INSERT INTO votes VALUES (%s, %s, %s)""",
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user.id, id, option)
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else:
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cursor.execute("""UPDATE votes SET option_id=%s
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WHERE user_id=%s AND poll_id=%s""",
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option, user.id, id)
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db.commit()
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def results(self, channel, poll_id):
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db = self._getDb(channel)
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cursor = db.cursor()
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cursor.execute("""SELECT id, question, started_by, open
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FROM polls WHERE id=%s""",
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poll_id)
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if cursor.rowcount == 0:
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raise dbi.NoRecordError
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(id, question, by, status) = cursor.fetchone()
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by = ircdb.users.getUser(by).name
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cursor.execute("""SELECT count(user_id), option_id
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FROM votes
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WHERE poll_id=%s
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GROUP BY option_id
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UNION
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SELECT 0, id AS option_id
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FROM options
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WHERE poll_id=%s
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AND id NOT IN (
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SELECT option_id FROM votes
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WHERE poll_id=%s)
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GROUP BY option_id
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ORDER BY count(user_id) DESC""",
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poll_id, poll_id, poll_id)
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if cursor.rowcount == 0:
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raise PollError, 'This poll has no votes yet.'
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else:
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options = []
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for count, option_id in cursor.fetchall():
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cursor.execute("""SELECT option FROM options
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WHERE id=%s AND poll_id=%s""",
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option_id, poll_id)
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option = cursor.fetchone()[0]
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options.append(OptionRecord(option_id, votes=int(count),
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text=option))
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return PollRecord(poll_id, question=question, status=status, by=by,
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options=options)
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def select(self, channel):
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db = self._getDb(channel)
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cursor = db.cursor()
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cursor.execute("""SELECT id, started_by, question
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FROM polls
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WHERE open=1""")
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if cursor.rowcount:
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return [PollRecord(id, question=q, by=by, status=1)
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for (id, by, q) in cursor.fetchall()]
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else:
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raise dbi.NoRecordError
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PollDB = plugins.DB('Poll', {'sqlite': SqlitePollDB})
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class Poll(callbacks.Privmsg):
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def __init__(self):
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self.__parent = super(Poll, self)
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self.__parent.__init__()
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self.db = PollDB()
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def die(self):
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self.__parent.die()
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self.db.close()
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def poll(self, irc, msg, args, channel, id):
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"""[<channel>] <id>
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Displays the poll question and options for the given poll id.
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<channel> is only necessary if the message isn't sent in the channel
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itself.
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"""
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try:
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record = self.db.get(channel, id)
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except dbi.NoRecordError:
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irc.error('There is no poll with id %s.' % id, Raise=True)
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irc.reply(record)
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poll = wrap(poll, ['channeldb', 'id'])
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def open(self, irc, msg, args, channel, user, question):
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"""[<channel>] <question>
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Creates a new poll with the given question. <channel> is only
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necessary if the message isn't sent in the channel itself.
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"""
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irc.replySuccess('(poll #%s added)' %
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self.db.open(channel, user, question))
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open = wrap(open, ['channeldb', 'user', 'text'])
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def close(self, irc, msg, args, channel, id):
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"""[<channel>] <id>
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Closes the poll with the given <id>; further votes will not be allowed.
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<channel> is only necessary if the message isn't sent in the channel
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itself.
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"""
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try:
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self.db.closePoll(channel, id)
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irc.replySuccess()
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except dbi.NoRecordError:
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irc.errorInvalid('poll id')
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close = wrap(close, ['channeldb', ('id', 'poll')])
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def add(self, irc, msg, args, channel, user, id, option):
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"""[<channel>] <id> <option text>
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Add an option with the given text to the poll with the given id.
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<channel> is only necessary if the message isn't sent in the channel
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itself.
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"""
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try:
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self.db.add(channel, user, id, option)
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irc.replySuccess()
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except dbi.NoRecordError:
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irc.errorInvalid('poll id')
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except PollError, e:
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irc.error(str(e))
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irc.replySuccess()
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add = wrap(add, ['channeldb', 'user', ('id', 'poll'), 'text'])
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def vote(self, irc, msg, args, channel, user, id, option):
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"""[<channel>] <poll id> <option id>
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Vote for the option with the given id on the poll with the given poll
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id. This command can also be used to override any previous vote.
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<channel> is only necesssary if the message isn't sent in the channel
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itself.
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"""
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try:
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self.db.vote(channel, user, id, option)
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irc.replySuccess()
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except dbi.NoRecordError:
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irc.errorInvalid('poll id')
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except PollError, e:
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irc.error(str(e))
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vote = wrap(vote, ['channeldb', 'user', ('id', 'poll'), ('id', 'option')])
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def results(self, irc, msg, args, channel, id):
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"""[<channel>] <id>
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Shows the results for the poll with the given id. <channel> is only
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necessary if the message is not sent in the channel itself.
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"""
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try:
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poll = self.db.results(channel, id)
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reply = 'Results for poll #%s: "%s" by %s' % \
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(poll.id, poll.question, poll.by)
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options = poll.options
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L = []
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for option in options:
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L.append('%s: %s' % (utils.quoted(option.text), option.votes))
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s = utils.commaAndify(L)
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reply += ' - %s' % s
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irc.reply(reply)
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except dbi.NoRecordError:
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irc.error('There is no such poll.', Raise=True)
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except PollError, e:
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irc.error(str(e))
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results = wrap(results, ['channeldb', ('id', 'poll')])
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def list(self, irc, msg, args, channel):
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"""[<channel>]
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Lists the currently open polls for <channel>. <channel> is only
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necessary if the message isn't sent in the channel itself.
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"""
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try:
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polls = self.db.select(channel)
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polls = ['#%s: %s' % (p.id, utils.quoted(p.question))
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for p in polls]
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irc.reply(utils.commaAndify(polls))
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except dbi.NoRecordError:
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irc.reply('This channel currently has no open polls.')
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list = wrap(list, ['channeldb'])
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Class = Poll
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# vim:set shiftwidth=4 tabstop=8 expandtab textwidth=78:
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