Limnoria/plugins/Todo.py

#!/usr/bin/env python

###
# Copyright (c) 2003, Daniel DiPaolo
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###

"""
The Todo module allows registered users to keep their own personal list of
tasks to do, with an optional priority for each.
"""

import plugins

import glob
import time
import getopt
import string
import os.path

import sqlite

import conf
import debug
import ircdb
import utils
import privmsgs
import callbacks

dbfilename = os.path.join(conf.dataDir, 'Todo.db')

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 Todo')

example = utils.wrapLines("""
Add an example IRC session using this module here.
""")

class Todo(callbacks.Privmsg):
    def __init__(self):
        callbacks.Privmsg.__init__(self)
        self.makeDB(dbfilename)

    def makeDB(self, filename):
        """create Todo 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 todo (
                          id INTEGER PRIMARY KEY,
                          priority INTEGER,
                          added_at TIMESTAMP,
                          userid INTEGER,
                          task TEXT,
                          active BOOLEAN
                          )""")
        self.db.commit()

    def die(self):
        self.db.commit()
        self.db.close()
        del self.db

    def todo(self, irc, msg, args):
        """[<username>|<task id>]

        Retrieves a task for the given task id.  If no task id is given, it
        will return a list of task ids that that user has added to their todo
        list.
        """
        arg = privmsgs.getArgs(args, needed=0, optional=1)

        userid = None
        taskid = None
        # Figure out what userid and taskid need to be set to (if anything)
        if not arg:
            pass
        else:
            try:
                taskid = int(arg)
            except ValueError:
                try:
                    userid = ircdb.users.getUserId(arg)
                except KeyError:
                    irc.error(msg,
                              '%r is not a valid task id or username' % arg)
                    return
        # Everything needs a cursor, might as well plop it outside
        if not userid and not taskid:
            try:
                id = ircdb.users.getUserId(msg.prefix)
            except KeyError:
                irc.error(msg, conf.replyNotRegistered)
                return
            cursor = self.db.cursor()
            cursor.execute("""SELECT id, task FROM todo
                              WHERE userid = %s AND active = 1""", id)
            if cursor.rowcount == 0:
                irc.reply(msg, 'You have no tasks in your todo list.')
                return
            s = ['#%s: %s' % (item[0], utils.ellipsisify(item[1], 50)) \
                     for item in cursor.fetchall()]
            irc.reply(msg, utils.commaAndify(s))
        else:
            cursor = self.db.cursor() 
            if userid:
                cursor.execute("""SELECT id, task FROM todo
                                  WHERE userid = %s AND active = 1""", userid)
                if cursor.rowcount == 0:
                    irc.reply(msg, 'That user has no todos.')
                    return
                s = ['#%s: %s' % (item[0], utils.ellipsisify(item[1], 50)) \
                        for item in cursor.fetchall()]                    
                reply = "%s for %s: %s" % \
                        (utils.pluralize(len(s), 'Todo'), arg,
                         utils.commaAndify(s))
                irc.reply(msg, reply)
                return
            else:
                cursor.execute("""SELECT userid, priority, added_at, task
                                  FROM todo WHERE id = %s
                                  AND active = 1""", taskid)
                if cursor.rowcount == 0:
                    irc.error(msg, '%r is not a valid task id' % taskid)
                    return
                userid, pri, added_at, task = cursor.fetchone()
                # Construct and return the reply
                username = ircdb.users.getUser(userid).name
                if pri == 0:
                    priority = ""
                else:
                    priority = ", priority: %s" % pri
                added_time = time.strftime(conf.humanTimestampFormat,
                                           time.localtime(int(added_at)))
                s = "Todo for %s: %s%s (Added at %s)" % \
                    (username, task, priority, added_time)
                irc.reply(msg, s)

    def add(self, irc, msg, args):
        """[--priority=<num>] <text>

        Adds <text> as a task in your own personal todo list.  The optional
        priority argument allows you to set a task as a high or low priority.
        Any integer is valid.
        """
        try:
            id = ircdb.users.getUserId(msg.prefix)
        except KeyError:
            irc.error(msg, conf.replyNotRegistered)
            return
        (optlist, rest) = getopt.getopt(args, '', ['priority='])  
        priority = 0 
        for (option, arg) in optlist:
            if option == '--priority':
                try:
                    priority = int(arg)
                except ValueError, e:
                    irc.error(msg, '%r is an invalid priority' % arg)
                    return
        text = privmsgs.getArgs(rest, needed=1)
        cursor = self.db.cursor()
        cursor.execute("""INSERT INTO todo
                          VALUES (NULL, %s, %s, %s, %s, 1)""",
                          priority, int(time.time()), id, text)
        self.db.commit()
        irc.reply(msg, conf.replySuccess)

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

        Removes <task id> from your personal todo list.
        """
        try:
            id = ircdb.users.getUserId(msg.prefix)
        except KeyError:
            irc.error(msg, conf.replyNotRegistered)
            return

        taskid = privmsgs.getArgs(args, needed=1)
        cursor = self.db.cursor()
        cursor.execute("""SELECT * FROM todo
                          WHERE id = %s AND userid = %s
                          AND active = 1""", taskid, id)
        if cursor.rowcount == 0:
            irc.error(msg, 'None of your tasks match that id.')
            return
        cursor.execute("""UPDATE todo SET active = 0 WHERE id = %s""", taskid)
        self.db.commit()
        irc.reply(msg, conf.replySuccess)

    _sqlTrans = string.maketrans('*?', '%_')
    def search(self, irc, msg, args):
        """[--{regexp,exact}=<value>] [<glob>]

        Searches the keyspace for tasks matching <glob>.  If --regexp is given,
        it associated value is taken as a regexp and matched against the tasks;
        if --exact is given, its associated value is taken as an exact string
        to match against the task.
        """
        try:
            id = ircdb.users.getUserId(msg.prefix)
        except KeyError:
            irc.error(msg, conf.replyNotRegistered)
            return

        (optlist, rest) = getopt.getopt(args, '', ['regexp=', 'exact='])
        if not optlist and not rest:
            raise callbacks.ArgumentError
        criteria = ['userid = %s' % id, 'active = 1']
        formats = []
        predicateName = 'p'
        for (option, arg) in optlist:
            if option == '--exact':
                criteria.append('task LIKE %s')
                formats.append('%' + arg + '%')
            elif option == '--regexp':
                criteria.append('%s(task)' % predicateName)
                try:
                    r = utils.perlReToPythonRe(arg)
                except ValueError, e:
                    irc.error(msg, '%r is not a valid regular expression' %
                              arg)
                    return
                def p(s, r=r):
                    return int(bool(r.search(s)))
                self.db.create_function(predicateName, 1, p)
                predicateName += 'p'
        for glob in rest:
            criteria.append('task LIKE %s')
            formats.append(glob.translate(self._sqlTrans))
        cursor = self.db.cursor()
        sql = """SELECT id, task FROM todo WHERE %s""" % ' AND '.join(criteria)
        cursor.execute(sql, formats)
        if cursor.rowcount == 0:
            irc.reply(msg, 'No tasks matched that query.')
        else:
            tasks = ['#%s: %s' % (item[0], utils.ellipsisify(item[1], 50)) \
                     for item in cursor.fetchall()]
            irc.reply(msg, utils.commaAndify(tasks))

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

        Sets the priority of the todo with the given id to the specified value.
        """
        try:
            user_id = ircdb.users.getUserId(msg.prefix)
        except KeyError:
            irc.error(msg, conf.replyNotRegistered)
            return
        (id, priority) = privmsgs.getArgs(args, needed=2)
        cursor = self.db.cursor()
        cursor.execute("""SELECT userid, priority FROM todo
                          WHERE id = %s AND active = 1""", id)
        if cursor.rowcount == 0:
            irc.error(msg, 'No note with id %d' % id)
            return
        (userid, oldpriority) = cursor.fetchone()
        if userid != user_id:
            irc.error(msg, 'Todo #%d does not belong to you.' % id)
            return
        # If we make it here, we're okay
        cursor.execute("""UPDATE todo SET priority = %s
                          WHERE id = %s""", priority, id)
        self.db.commit()
        irc.reply(msg, conf.replySuccess)

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

        Modify the task with the given id using the supplied regexp.
        """
        try:
            userid = ircdb.users.getUserId(msg.prefix)
        except KeyError:
            irc.error(msg, conf.replyNotRegistered)
            return
        taskid, regexp = privmsgs.getArgs(args, needed=2)
        # Check the regexp first, it's easier and doesn't require a db query
        try:
            replacer = utils.perlReToReplacer(regexp)
        except ValueError:
            irc.error(msg, '%r is not a valid regexp' % regexp)
            return
        cursor = self.db.cursor()
        cursor.execute("""SELECT task FROM todo
                          WHERE userid = %s AND id = %s
                          AND active = 1""", userid, taskid)
        if cursor.rowcount == 0:
            irc.error(msg, '%r is not a valid task id' % taskid)
            return
        newtext = replacer(cursor.fetchone()[0])
        cursor.execute("""UPDATE todo SET task = %s
                          WHERE id = %s""", newtext, taskid)
        self.db.commit()
        irc.reply(msg, conf.replySuccess)

Class = Todo

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