# jsb/plugs/common/karma.py
#
#

""" maintain karma! """

## jsb imports

from jsb.utils.name import stripname
from jsb.lib.callbacks import callbacks
from jsb.lib.commands import cmnds
from jsb.lib.examples import examples
from jsb.lib.persist import PlugPersist, PlugPersistCollection
from jsb.utils.statdict import StatDict
from jsb.lib.persistconfig import PersistConfig

## basic imports

import logging
import re

## defines

RE_KARMA = re.compile(r'^(?P<item>\([^\)]+\)|\[[^\]]+\]|\w+)(?P<mod>\+\+|--)( |$)')

cfg = PersistConfig()
cfg.define('verbose', '1')

## KarmaItem class

class KarmaItem(PlugPersist):

     """ Item holding karma data. """

     def __init__(self, name, default={}):
         PlugPersist.__init__(self, name)
         self.data.name = name
         self.data.count = self.data.count or 0
         self.data.whoup = self.data.whoup or {}
         self.data.whodown = self.data.whodown or {}
         self.data.whyup = self.data.whyup or []
         self.data.whydown = self.data.whydown or []

## karma-precondition

def prekarma(bot, event):
     # if not event.iscmnd(): return False
     # we want to catch all the ++ and to avoid cheating
    if event.userhost in bot.ignore: return False
    karmastring = re.search(RE_KARMA, event.txt)
    if karmastring:
         # ignore the karma from the same user
         if karmastring.group('item') == event.nick : return False
         else: return True
    return False

## karma-callbacks

def karmacb(bot, event):
    """ karma callback. """
    event.bind(bot)
    if bot.type == "convore" and not event.chan.data.enable: return
    targets = re.findall(RE_KARMA, event.txt)
    karma = []
    try: reason = event.txt.split('#', 1)[1] ; reason = reason.strip()
    except IndexError: reason = None
    for target in targets:
        try: item, what, bogus = target
        except ValueError: logging.debug("%s not in (iten, what, bogus) form" % target) ; continue
        item = item.lower()
        if what == "++":
            i = KarmaItem(event.channel.lower() + "-" + item)
            i.data.count += 1
            if event.nick not in i.data.whoup: i.data.whoup[event.nick] = 0
            i.data.whoup[event.nick] += 1
            if reason and reason not in i.data.whyup: i.data.whyup.append(reason)
            i.save()
        else:
            i = KarmaItem(event.channel.lower() + "-" + item)
            i.data.count -= 1
            if event.nick not in i.data.whodown: i.data.whodown[event.nick] = 0
            i.data.whodown[event.nick] -= 1
            if reason and reason not in i.data.whyup: i.data.whydown.append(reason)
            i.save()
        karma.append("%s: %s" % (item, i.data.count))
        got = item or item2
    if karma: 
        if cfg.get('verbose') == '1': event.reply("karma - ", karma)
        event.ready()

callbacks.add('PRIVMSG', karmacb, prekarma)
callbacks.add('MESSAGE', karmacb, prekarma)
callbacks.add('CONSOLE', karmacb, prekarma)
callbacks.add('CONVORE', karmacb, prekarma)
callbacks.add('TORNADO', karmacb, prekarma)

## karma command

def handle_karma(bot, event):
    """ arguments: <item> - show karma of item. """
    if not event.rest: event.missing("<item>") ; return
    k = event.rest.lower()
    item = KarmaItem(event.channel.lower() + "-" + k)
    if item.data.count: event.reply("karma of %s is %s" % (k, item.data.count))
    else: event.reply("%s doesn't have karma yet." % k)

cmnds.add('karma', handle_karma, ['OPER', 'USER', 'GUEST'])
examples.add('karma', 'show karma', 'karma jsb')

## karma-whyup command

def handle_karmawhyup(bot, event):
    """ arguments: <item> - show reason for karma increase. """
    k = event.rest.lower()
    item = KarmaItem(event.channel + "-" + k)
    if item.data.whyup: event.reply("reasons for karma up are: ", item.data.whyup)
    else: event.reply("no reasons for karmaup of %s known yet" % k)

cmnds.add("karma-whyup", handle_karmawhyup, ['OPER', 'USER', 'GUEST'])
examples.add("karma-whyup", "show why a karma item is upped", "karma-whyup jsb")

## karma-whoup command

def handle_karmawhoup(bot, event):
    """ arguments: <item> - show who increased the karma of an item. """
    k = event.rest.lower()
    item = KarmaItem(event.channel.lower() + "-" + k)
    sd = StatDict(item.data.whoup)
    res = []
    for i in sd.top():
        res.append("%s: %s" % i)
    if res: event.reply("uppers of %s are: " % k, res)
    else: event.reply("nobody upped %s yet" % k)

cmnds.add("karma-whoup", handle_karmawhoup, ['OPER', 'USER', 'GUEST'])
examples.add("karma-whoup", "show who upped an item", "karma-whoup jsb")

## karma-whydown command

def handle_karmawhydown(bot, event):
    """ arguments: <item> - show reason why karma was lowered. """
    k = event.rest.lower()
    item = KarmaItem(event.channel.lower() + "-" + k)
    if item.data.whydown: event.reply("reasons for karmadown are: ", item.data.whydown)
    else: event.reply("no reasons for karmadown of %s known yet" % k)

cmnds.add("karma-whydown", handle_karmawhydown, ['OPER', 'USER', 'GUEST'])
examples.add("karma-whydown", "show why a karma item is downed", "karma-whydown jsb")

## karma-whodown command

def handle_karmawhodown(bot, event):
    """ arguments: <item> - show who lowered the karma of an item. """
    k = event.rest.lower()
    item = KarmaItem(event.channel.lower() + "-" + k)
    sd = StatDict(item.data.whodown)
    res = []
    for i in sd.down():
        res.append("%s: %s" % i)
    if res: event.reply("downers of %s are: " % k, res)
    else: event.reply("nobody downed %s yet" % k)

cmnds.add("karma-whodown", handle_karmawhodown, ['OPER', 'USER', 'GUEST'])
examples.add("karma-whodown", "show who downed an item", "karma-whodown jsb")

## karma-good command

def handle_karmagood(bot, event):
    """ arguments: none - show top karma items of a channel. """
    collection = PlugPersistCollection()
    stats = StatDict()
    objs = collection.objects(event.channel.lower())
    for name, obj in objs.iteritems():
       if not obj.data: logging.warn("%s is empty" % name) ; continue
       item = stripname(name).split("-")[-1]
       stats.upitem(item, obj.data.count)
    res = []
    for item in stats.top():
        res.append("%s - %s" % item)
    event.reply("top karma items of %s: " % event.channel, res)
    
cmnds.add("karma-good", handle_karmagood, ["OPER", "USER", "GUEST"])
examples.add("karma-good", "show top karma items of a channel", "karma-good")