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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 wrap
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>

        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.
        """
        name = privmsgs.getArgs(args)
        irc.reply(self.getStats(name))

    _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.info('_gkGameTitle didn\'t match (%s).', url)
                return
            gameTitle = m.groups()
            gameTitle = ircutils.bold(gameTitle)
            L = self._gkPlayer.findall(s)
            if not L:
                self.log.info('_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 = 'That doesn\'t appear to be a proper Gameknot game.'
            irc.errorPossibleBug(s)
        except Exception, e:
            irc.error(utils.exnToString(e))
    gameknotSnarfer = wrap(gameknotSnarfer, decorators=['urlSnarfer'])

    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 = wrap(gameknotStatsSnarfer,decorators=['urlSnarfer'])

Class = Gameknot

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