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###

"""
Handles URL snarfing for Gameknot.com and the gkstats command.
"""

__revision__ = "$Id$"

import supybot.plugins as plugins

import re
import sets

import supybot.registry as registry

import supybot.conf as conf
import supybot.utils as utils
from supybot.commands import *
import supybot.plugins as plugins
import supybot.ircutils as ircutils
import supybot.webutils as webutils
import supybot.privmsgs as privmsgs
import supybot.callbacks as callbacks


def configure(advanced):
    from supybot.questions import output, expect, anything, something, yn
    conf.registerPlugin('Gameknot', True)
    if advanced:
        output("""The Gameknot plugin has the functionality to watch for URLs
                  that match a specific pattern (we call this a snarfer). When
                  supybot sees such a URL, he will parse the web page for
                  information and reply with the results.""")
        if yn('Do you want the Gameknot stats snarfer enabled by default?',
              default=False):
            conf.supybot.plugins.Gameknot.statSnarfer.setValue(True)
        if yn('Do you want the Gameknot Game links snarfer enabled by '
              'default?', default=False):
            conf.supybot.plugins.Gameknot.gameSnarfer.setValue(True)

conf.registerPlugin('Gameknot')
conf.registerChannelValue(conf.supybot.plugins.Gameknot, 'gameSnarfer',
    registry.Boolean(False, """Determines whether the game URL snarfer is
    enabled.  If so, the bot will reply to the channel with a summary of the
    game data when it sees a Gameknot game link on the channel."""))
conf.registerChannelValue(conf.supybot.plugins.Gameknot, 'statSnarfer',
    registry.Boolean(False, """Determines whether the stats URL snarfer is
    enabled.  If so, the bot will reply to the channel with a summary of the
    stats of any player whose stats URL is seen on the channel."""))

class Gameknot(callbacks.PrivmsgCommandAndRegexp):
    threaded = True
    callBefore = ['URL']
    regexps = ['gameknotSnarfer', 'gameknotStatsSnarfer']
    _gkrating = re.compile(r'<font color="#FFFF33">(\d+)</font>')
    _gkgames = re.compile(r's:</td><td class=sml>(\d+)</td></tr>')
    _gkrecord = re.compile(r'"#FFFF00">(\d+)[^"]+"#FFFF00">(\d+)[^"]+'
                           r'"#FFFF00">(\d+)')
    _gkteam = re.compile(r'Team:(<.*?>)+(?P<name>.*?)</span>')
    _gkseen = re.compile(r'(seen on GK:\s+([^[]+ago)|.*?is hiding.*?)')

    def getStats(self, name):
        gkprofile = 'http://www.gameknot.com/stats.pl?%s' % name
        try:
            profile = webutils.getUrl(gkprofile)
            rating = self._gkrating.search(profile).group(1)
            games = self._gkgames.search(profile).group(1)
            (w, l, d) = self._gkrecord.search(profile).groups()
            try:
                w = int(w)
                l = int(l)
                d = int(d)
                wp = 100. * w / (w + l + d) # win percent
                lp = 100. * l / (w + l + d) # loss percent
                dp = 100. * d / (w + l + d) # draw percent
            except (ValueError, ZeroDivisionError):
                w = w
                wp = 0.
                l = l
                lp = 0.
                d = d
                dp = 0.
            seen = self._gkseen.search(utils.htmlToText(profile))
            if seen is None:
                seen = ''
            elif 'is hiding' in seen.group(0):
                seen = '%s is hiding his/her online status.' % name
            elif seen.group(2).startswith('0'):
                seen = '%s is on gameknot right now.' % name
            else:
                seen = '%s was last seen on Gameknot %s.' % (name,
                seen.group(2))
            games = utils.nItems('game', int(games), between='active')
            if 'Team:' in profile:
                team = self._gkteam.search(profile).group('name')
                team = utils.htmlToText(team)
                s = '%s (team: %s) is rated %s and has %s ' \
                    'and a record of %s, %s, and %s ' \
                    '(win/loss/draw percentage: %.2f%%/%.2f%%/%.2f%%).  %s' % \
                    (name, team, rating, games,
                     utils.nItems('win', w),
                     utils.nItems('loss', l),
                     utils.nItems('draw', d),
                     wp, lp, dp, seen)
            else:
                s = '%s is rated %s and has %s ' \
                    'and a record of %s, %s, and %s ' \
                    '(win/loss/draw percentage: %.2f%%/%.2f%%/%.2f%%).  %s' % \
                    (name, rating, games,
                     utils.nItems('win', w),
                     utils.nItems('loss', l),
                     utils.nItems('draw', d),
                     wp, lp, dp, seen)
            return s
        except AttributeError:
            if ('User %s not found!' % name.lower()) in profile:
                raise callbacks.Error, 'No user %s exists.' % name
            else:
                raise callbacks.Error,'The format of the page was odd.  %s' % \
                      conf.supybot.replies.possibleBug()
        except webutils.WebError, e:
            raise callbacks.Error, webutils.strError(e)


    def gkstats(self, irc, msg, args, name):
        """<name>

        Returns the stats Gameknot keeps on <name>.  Gameknot is an online
        website for playing chess (rather similar to correspondence chess, just
        somewhat faster) against players from all over the world.
        """
        irc.reply(self.getStats(name))
    gkstats = wrap(gkstats, ['text'])

    _gkPlayer = re.compile(r"popd\('(Rating[^']+)'\).*?>([^<]+)<")
    _gkRating = re.compile(r": (\d+)[^:]+:<br>(\d+)[^,]+, (\d+)[^,]+, (\d+)")
    _gkGameTitle = re.compile(r"<td[^<]+><p><b>(.*?)\s*</b>&nbsp;")
    _gkWon = re.compile(r'>(\S+)\s+won')
    _gkReason = re.compile(r'won\s+\(\S+\s+(\S+)\)')
    def gameknotSnarfer(self, irc, msg, match):
        r"http://(?:www\.)?gameknot\.com/chess\.pl\?bd=\d+(&r=\d+)?"
        if not self.registryValue('gameSnarfer', msg.args[0]):
            return
        url = match.group(0)
        s = webutils.getUrl(url)
        try:
            if 'no longer available' in s:
                s = 'That game is no longer available.'
                irc.reply(s, prefixName=True)
                return
            m = self._gkGameTitle.search(s)
            if m is None:
                self.log.debug('_gkGameTitle didn\'t match (%s).', url)
                return
            gameTitle = m.groups()
            gameTitle = ircutils.bold(gameTitle)
            L = self._gkPlayer.findall(s)
            if not L:
                self.log.debug('_gkPlayer didn\'t match (%s).', url)
                return
            ((wRating, wName), (bRating, bName)) = L
            wName = ircutils.bold(wName)
            bName = ircutils.bold(bName)
            if 'to move...' in s:
                if 'white to move' in s:
                    toMove = wName + ' to move.'
                else:
                    toMove = bName + ' to move.'
            else:
                # Game is over.
                m = self._gkWon.search(s)
                if m:
                    winner = m.group(1)
                    m = self._gkReason.search(s)
                    if m:
                        reason = m.group(1)
                    else:
                        reason = 'lost'
                    if winner == 'white':
                        toMove = '%s won, %s %s.' % (wName, bName, reason)
                    else:
                        toMove = '%s won, %s %s.' % (bName, wName, reason)
                else:
                    toMove = 'The game was a draw.'
            (wRating, wWins, wLosses, wDraws) = \
                      self._gkRating.search(wRating).groups()
            (bRating, bWins, bLosses, bDraws) = \
                      self._gkRating.search(bRating).groups()
            wStats = '%s; W-%s, L-%s, D-%s' % (wRating, wWins, wLosses, wDraws)
            bStats = '%s; W-%s, L-%s, D-%s' % (bRating, bWins, bLosses, bDraws)
            s = '%s: %s (%s) vs. %s (%s);  %s' % \
                (gameTitle, wName, wStats, bName, bStats, toMove)
            irc.reply(s, prefixName=False)
        except ValueError:
            s = '%s doesn\'t appear to be a proper Gameknot game.' % url
            self.log.debug('Unable to snarf.  %s' % s)
        except Exception, e:
            self.log.warning(utils.exnToString(e))
    gameknotSnarfer = urlSnarfer(gameknotSnarfer)

    def gameknotStatsSnarfer(self, irc, msg, match):
        r"http://gameknot\.com/stats\.pl\?([^& ]+)"
        if not self.registryValue('statSnarfer', msg.args[0]):
            return
        name = match.group(1)
        s = self.getStats(name)
        irc.reply(s, prefixName=False)
    gameknotStatsSnarfer = urlSnarfer(gameknotStatsSnarfer)

Class = Gameknot

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