#!/usr/bin/python
# -*- coding: utf-8 -*-

# SAT plugin for managing French Tarot game
# Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015 Jérôme Poisson (goffi@goffi.org)

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.

# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

from sat.core.i18n import _
from sat.core.constants import Const as C
from sat.core.log import getLogger
log = getLogger(__name__)
from twisted.words.xish import domish
from twisted.words.protocols.jabber import jid
from twisted.internet import defer
from wokkel import data_form

from sat.memory import memory
from sat.tools import xml_tools
from sat_frontends.tools.games import TarotCard
import random


NS_CG = 'http://www.goffi.org/protocol/card_game'
CG_TAG = 'card_game'

PLUGIN_INFO = {
    "name": "Tarot cards plugin",
    "import_name": "Tarot",
    "type": "Misc",
    "protocols": [],
    "dependencies": ["XEP-0045", "XEP-0249", "ROOM-GAME"],
    "main": "Tarot",
    "handler": "yes",
    "description": _("""Implementation of Tarot card game""")
}


class Tarot(object):

    def inheritFromRoomGame(self, host):
        global RoomGame
        RoomGame = host.plugins["ROOM-GAME"].__class__
        self.__class__ = type(self.__class__.__name__, (self.__class__, RoomGame, object), {})

    def __init__(self, host):
        log.info(_("Plugin Tarot initialization"))
        self._sessions = memory.Sessions()
        self.inheritFromRoomGame(host)
        RoomGame._init_(self, host, PLUGIN_INFO, (NS_CG, CG_TAG),
                        game_init={'hand_size': 18, 'init_player': 0, 'current_player': None, 'contrat': None, 'stage': None},
                        player_init={'score': 0})
        self.contrats = [_('Passe'), _('Petite'), _('Garde'), _('Garde Sans'), _('Garde Contre')]
        host.bridge.addMethod("tarotGameLaunch", ".plugin", in_sign='asss', out_sign='', method=self._prepareRoom, async=True)  # args: players, room_jid, profile
        host.bridge.addMethod("tarotGameCreate", ".plugin", in_sign='sass', out_sign='', method=self._createGame)  # args: room_jid, players, profile
        host.bridge.addMethod("tarotGameReady", ".plugin", in_sign='sss', out_sign='', method=self._playerReady)  # args: player, referee, profile
        host.bridge.addMethod("tarotGamePlayCards", ".plugin", in_sign='ssa(ss)s', out_sign='', method=self.play_cards)  # args: player, referee, cards, profile
        host.bridge.addSignal("tarotGamePlayers", ".plugin", signature='ssass')  # args: room_jid, referee, players, profile
        host.bridge.addSignal("tarotGameStarted", ".plugin", signature='ssass')  # args: room_jid, referee, players, profile
        host.bridge.addSignal("tarotGameNew", ".plugin", signature='sa(ss)s')  # args: room_jid, hand, profile
        host.bridge.addSignal("tarotGameChooseContrat", ".plugin", signature='sss')  # args: room_jid, xml_data, profile
        host.bridge.addSignal("tarotGameShowCards", ".plugin", signature='ssa(ss)a{ss}s')  # args: room_jid, type ["chien", "poignée",...], cards, data[dict], profile
        host.bridge.addSignal("tarotGameCardsPlayed", ".plugin", signature='ssa(ss)s')  # args: room_jid, player, type ["chien", "poignée",...], cards, data[dict], profile
        host.bridge.addSignal("tarotGameYourTurn", ".plugin", signature='ss')  # args: room_jid, profile
        host.bridge.addSignal("tarotGameScore", ".plugin", signature='ssasass')  # args: room_jid, xml_data, winners (list of nicks), loosers (list of nicks), profile
        host.bridge.addSignal("tarotGameInvalidCards", ".plugin", signature='ssa(ss)a(ss)s')  # args: room_jid, game phase, played_cards, invalid_cards, profile
        self.deck_ordered = []
        for value in ['excuse'] + map(str, range(1, 22)):
            self.deck_ordered.append(TarotCard(("atout", value)))
        for suit in ["pique", "coeur", "carreau", "trefle"]:
            for value in map(str, range(1, 11)) + ["valet", "cavalier", "dame", "roi"]:
                self.deck_ordered.append(TarotCard((suit, value)))
        self.__choose_contrat_id = host.registerCallback(self._contratChoosed, with_data=True)
        self.__score_id = host.registerCallback(self._scoreShowed, with_data=True)

    def __card_list_to_xml(self, cards_list, elt_name):
        """Convert a card list to domish element"""
        cards_list_elt = domish.Element((None, elt_name))
        for card in cards_list:
            card_elt = domish.Element((None, 'card'))
            card_elt['suit'] = card.suit
            card_elt['value'] = card.value
            cards_list_elt.addChild(card_elt)
        return cards_list_elt

    def __xml_to_list(self, cards_list_elt):
        """Convert a domish element with cards to a list of tuples"""
        cards_list = []
        for card in cards_list_elt.elements():
            cards_list.append((card['suit'], card['value']))
        return cards_list

    def __ask_contrat(self):
        """Create a element for asking contrat"""
        contrat_elt = domish.Element((None, 'contrat'))
        form = data_form.Form('form', title=_('contrat selection'))
        field = data_form.Field('list-single', 'contrat', options=map(data_form.Option, self.contrats), required=True)
        form.addField(field)
        contrat_elt.addChild(form.toElement())
        return contrat_elt

    def __give_scores(self, scores, winners, loosers):
        """Create an element to give scores
        @param scores: unicode (can contain line feed)
        @param winners: list of unicode nicks of winners
        @param loosers: list of unicode nicks of loosers"""

        score_elt = domish.Element((None, 'score'))
        form = data_form.Form('form', title=_('scores'))
        for line in scores.split('\n'):
            field = data_form.Field('fixed', value=line)
            form.addField(field)
        score_elt.addChild(form.toElement())
        for winner in winners:
            winner_elt = domish.Element((None, 'winner'))
            winner_elt.addContent(winner)
            score_elt.addChild(winner_elt)
        for looser in loosers:
            looser_elt = domish.Element((None, 'looser'))
            looser_elt.addContent(looser)
            score_elt.addChild(looser_elt)
        return score_elt

    def __invalid_cards_elt(self, played_cards, invalid_cards, game_phase):
        """Create a element for invalid_cards error
        @param list_cards: list of Card
        @param game_phase: phase of the game ['ecart', 'play']"""
        error_elt = domish.Element((None, 'error'))
        played_elt = self.__card_list_to_xml(played_cards, 'played')
        invalid_elt = self.__card_list_to_xml(invalid_cards, 'invalid')
        error_elt['type'] = 'invalid_cards'
        error_elt['phase'] = game_phase
        error_elt.addChild(played_elt)
        error_elt.addChild(invalid_elt)
        return error_elt

    def __next_player(self, game_data, next_pl=None):
        """Increment player number & return player name
        @param next_pl: if given, then next_player is forced to this one
        """
        if next_pl:
            game_data['current_player'] = game_data['players'].index(next_pl)
            return next_pl
        else:
            pl_idx = game_data['current_player'] = (game_data['current_player'] + 1) % len(game_data['players'])
            return game_data['players'][pl_idx]

    def __winner(self, game_data):
        """give the nick of the player who win this trick"""
        players_data = game_data['players_data']
        first = game_data['first_player']
        first_idx = game_data['players'].index(first)
        suit_asked = None
        strongest = None
        winner = None
        for idx in [(first_idx + i) % 4 for i in range(4)]:
            player = game_data['players'][idx]
            card = players_data[player]['played']
            if card.value == "excuse":
                continue
            if suit_asked is None:
                suit_asked = card.suit
            if (card.suit == suit_asked or card.suit == "atout") and card > strongest:
                strongest = card
                winner = player
        assert winner
        return winner

    def __excuse_hack(self, game_data, played, winner):
        """give a low card to other team and keep excuse if trick is lost
        @param game_data: data of the game
        @param played: cards currently on the table
        @param winner: nick of the trick winner"""
        # TODO: manage the case where excuse is played on the last trick (and lost)
        players_data = game_data['players_data']
        excuse = TarotCard(("atout", "excuse"))

        # we first check if the Excuse was already played
        # and if somebody is waiting for a card
        for player in game_data['players']:
            if players_data[player]['wait_for_low']:
                # the excuse owner has to give a card to somebody
                if winner == player:
                    # the excuse owner win the trick, we check if we have something to give
                    for card in played:
                        if card.points == 0.5:
                            pl_waiting = players_data[player]['wait_for_low']
                            played.remove(card)
                            players_data[pl_waiting]['levees'].append(card)
                            log.debug(_(u'Player %(excuse_owner)s give %(card_waited)s to %(player_waiting)s for Excuse compensation') % {"excuse_owner": player, "card_waited": card, "player_waiting": pl_waiting})
                            return
                return

        if excuse not in played:
            # the Excuse is not on the table, nothing to do
            return

        excuse_player = None  # Who has played the Excuse ?
        for player in game_data['players']:
            if players_data[player]['played'] == excuse:
                excuse_player = player
                break

        if excuse_player == winner:
            return  # the excuse player win the trick, nothing to do

        # first we remove the excuse from played cards
        played.remove(excuse)
        # then we give it back to the original owner
        owner_levees = players_data[excuse_player]['levees']
        owner_levees.append(excuse)
        # finally we give a low card to the trick winner
        low_card = None
        # We look backward in cards won by the Excuse owner to
        # find a low value card
        for card_idx in range(len(owner_levees) - 1, -1, -1):
            if owner_levees[card_idx].points == 0.5:
                low_card = owner_levees[card_idx]
                del owner_levees[card_idx]
                players_data[winner]['levees'].append(low_card)
                log.debug(_(u'Player %(excuse_owner)s give %(card_waited)s to %(player_waiting)s for Excuse compensation') % {"excuse_owner": excuse_player, "card_waited": low_card, "player_waiting": winner})
                break
        if not low_card:  # The player has no low card yet
            # TODO: manage case when player never win a trick with low card
            players_data[excuse_player]['wait_for_low'] = winner
            log.debug(_(u"%(excuse_owner)s keep the Excuse but has not card to give, %(winner)s is waiting for one") % {'excuse_owner': excuse_player, 'winner': winner})

    def __draw_game(self, game_data):
        """The game is draw, no score change
        @param game_data: data of the game
        @return: tuple with (string victory message, list of winners, list of loosers)"""
        players_data = game_data['players_data']
        scores_str = _('Draw game')
        scores_str += '\n'
        for player in game_data['players']:
            scores_str += _(u"\n--\n%(player)s:\nscore for this game ==> %(score_game)i\ntotal score ==> %(total_score)i") % {'player': player, 'score_game': 0, 'total_score': players_data[player]['score']}
        log.debug(scores_str)

        return (scores_str, [], [])

    def __calculate_scores(self, game_data):
        """The game is finished, time to know who won :)
        @param game_data: data of the game
        @return: tuple with (string victory message, list of winners, list of loosers)"""
        players_data = game_data['players_data']
        levees = players_data[game_data['attaquant']]['levees']
        score = 0
        nb_bouts = 0
        bouts = []
        for card in levees:
            if card.bout:
                nb_bouts += 1
                bouts.append(card.value)
            score += card.points

        # We do a basic check on score calculation
        check_score = 0
        defenseurs = game_data['players'][:]
        defenseurs.remove(game_data['attaquant'])
        for defenseur in defenseurs:
            for card in players_data[defenseur]['levees']:
                check_score += card.points
        if game_data['contrat'] == "Garde Contre":
            for card in game_data['chien']:
                check_score += card.points
        assert (score + check_score == 91)

        point_limit = None
        if nb_bouts == 3:
            point_limit = 36
        elif nb_bouts == 2:
            point_limit = 41
        elif nb_bouts == 1:
            point_limit = 51
        else:
            point_limit = 56
        if game_data['contrat'] == 'Petite':
            contrat_mult = 1
        elif game_data['contrat'] == 'Garde':
            contrat_mult = 2
        elif game_data['contrat'] == 'Garde Sans':
            contrat_mult = 4
        elif game_data['contrat'] == 'Garde Contre':
            contrat_mult = 6
        else:
            log.error(_('INTERNAL ERROR: contrat not managed (mispelled ?)'))
            assert(False)

        victory = (score >= point_limit)
        margin = abs(score - point_limit)
        points_defenseur = (margin + 25) * contrat_mult * (-1 if victory else 1)
        winners = []
        loosers = []
        player_score = {}
        for player in game_data['players']:
            # TODO: adjust this for 3 and 5 players variants
            # TODO: manage bonuses (petit au bout, poignée, chelem)
            player_score[player] = points_defenseur if player != game_data['attaquant'] else points_defenseur * -3
            players_data[player]['score'] += player_score[player]  # we add score of this game to the global score
            if player_score[player] > 0:
                winners.append(player)
            else:
                loosers.append(player)

        scores_str = _(u'The attacker (%(attaquant)s) makes %(points)i and needs to make %(point_limit)i (%(nb_bouts)s oulder%(plural)s%(separator)s%(bouts)s): (s)he %(victory)s') % {'attaquant': game_data['attaquant'], 'points': score, 'point_limit': point_limit, 'nb_bouts': nb_bouts, 'plural': 's' if nb_bouts > 1 else '', 'separator': ': ' if nb_bouts != 0 else '', 'bouts': ','.join(map(str, bouts)), 'victory': 'wins' if victory else 'looses'}
        scores_str += '\n'
        for player in game_data['players']:
            scores_str += _(u"\n--\n%(player)s:\nscore for this game ==> %(score_game)i\ntotal score ==> %(total_score)i") % {'player': player, 'score_game': player_score[player], 'total_score': players_data[player]['score']}
        log.debug(scores_str)

        return (scores_str, winners, loosers)

    def __invalid_cards(self, game_data, cards):
        """Checks that the player has the right to play what he wants to
        @param game_data: Game data
        @param cards: cards the player want to play
        @return forbidden_cards cards or empty list if cards are ok"""
        forbidden_cards = []
        if game_data['stage'] == 'ecart':
            for card in cards:
                if card.bout or card.value == "roi":
                    forbidden_cards.append(card)
                # TODO: manage case where atouts (trumps) are in the dog
        elif game_data['stage'] == 'play':
            biggest_atout = None
            suit_asked = None
            players = game_data['players']
            players_data = game_data['players_data']
            idx = players.index(game_data['first_player'])
            current_idx = game_data['current_player']
            current_player = players[current_idx]
            if idx == current_idx:
                # the player is the first to play, he can play what he wants
                return forbidden_cards
            while (idx != current_idx):
                player = players[idx]
                played_card = players_data[player]['played']
                if not suit_asked and played_card.value != "excuse":
                    suit_asked = played_card.suit
                if played_card.suit == "atout" and played_card > biggest_atout:
                    biggest_atout = played_card
                idx = (idx + 1) % len(players)
            has_suit = False  # True if there is one card of the asked suit in the hand of the player
            has_atout = False
            biggest_hand_atout = None

            for hand_card in game_data['hand'][current_player]:
                if hand_card.suit == suit_asked:
                    has_suit = True
                if hand_card.suit == "atout":
                    has_atout = True
                if hand_card.suit == "atout" and hand_card > biggest_hand_atout:
                    biggest_hand_atout = hand_card

            assert len(cards) == 1
            card = cards[0]
            if card.suit != suit_asked and has_suit and card.value != "excuse":
                forbidden_cards.append(card)
                return forbidden_cards
            if card.suit != suit_asked and card.suit != "atout" and has_atout:
                forbidden_cards.append(card)
                return forbidden_cards
            if card.suit == "atout" and card < biggest_atout and biggest_hand_atout > biggest_atout and card.value != "excuse":
                forbidden_cards.append(card)
        else:
            log.error(_('Internal error: unmanaged game stage'))
        return forbidden_cards

    def __start_play(self, room_jid, game_data, profile):
        """Start the game (tell to the first player after dealer to play"""
        game_data['stage'] = "play"
        next_player_idx = game_data['current_player'] = (game_data['init_player'] + 1) % len(game_data['players'])  # the player after the dealer start
        game_data['first_player'] = next_player = game_data['players'][next_player_idx]
        to_jid = jid.JID(room_jid.userhost() + "/" + next_player)  # FIXME: gof:
        self.send(to_jid, 'your_turn', profile=profile)

    def _contratChoosed(self, raw_data, profile):
        """Will be called when the contrat is selected
        @param raw_data: contains the choosed session id and the chosen contrat
        @param profile_key: profile
        """
        try:
            session_data = self._sessions.profileGet(raw_data["session_id"], profile)
        except KeyError:
            log.warning(_("session id doesn't exist, session has probably expired"))
            # TODO: send error dialog
            return defer.succeed({})

        room_jid = session_data['room_jid']
        referee_jid = self.games[room_jid]['referee']
        player = self.host.plugins["XEP-0045"].getRoomNick(room_jid, profile)
        data = xml_tools.XMLUIResult2DataFormResult(raw_data)
        contrat = data['contrat']
        log.debug(_(u'contrat [%(contrat)s] choosed by %(profile)s') % {'contrat': contrat, 'profile': profile})
        d = self.send(referee_jid, ('', 'contrat_choosed'), {'player': player}, content=contrat, profile=profile)
        d.addCallback(lambda ignore: {})
        del self._sessions[raw_data["session_id"]]
        return d

    def _scoreShowed(self, raw_data, profile):
        """Will be called when the player closes the score dialog
        @param raw_data: nothing to retrieve from here but the session id
        @param profile_key: profile
        """
        try:
            session_data = self._sessions.profileGet(raw_data["session_id"], profile)
        except KeyError:
            log.warning(_("session id doesn't exist, session has probably expired"))
            # TODO: send error dialog
            return defer.succeed({})

        room_jid_s = session_data['room_jid'].userhost()
        # XXX: empty hand means to the frontend "reset the display"...
        self.host.bridge.tarotGameNew(room_jid_s, [], profile)
        del self._sessions[raw_data["session_id"]]
        return defer.succeed({})

    def play_cards(self, player, referee, cards, profile_key=C.PROF_KEY_NONE):
        """Must be call by player when the contrat is selected
        @param player: player's name
        @param referee: arbiter jid
        @cards: cards played (list of tuples)
        @profile_key: profile
        """
        profile = self.host.memory.getProfileName(profile_key)
        if not profile:
            log.error(_(u"profile %s is unknown") % profile_key)
            return
        log.debug(_(u'Cards played by %(profile)s: [%(cards)s]') % {'profile': profile, 'cards': cards})
        elem = self.__card_list_to_xml(TarotCard.from_tuples(cards), 'cards_played')
        self.send(jid.JID(referee), elem, {'player': player}, profile=profile)

    def newRound(self, room_jid, profile):
        game_data = self.games[room_jid]
        players = game_data['players']
        game_data['first_player'] = None  # first player for the current trick
        game_data['contrat'] = None
        common_data = {'contrat': None,
                       'levees': [],  # cards won
                       'played': None,  # card on the table
                       'wait_for_low': None  # Used when a player wait for a low card because of excuse
                       }

        hand = game_data['hand'] = {}
        hand_size = game_data['hand_size']
        chien = game_data['chien'] = []
        deck = self.deck_ordered[:]
        random.shuffle(deck)
        for i in range(4):
            hand[players[i]] = deck[0:hand_size]
            del deck[0:hand_size]
        chien.extend(deck)
        del(deck[:])
        msg_elts = {}
        for player in players:
            msg_elts[player] = self.__card_list_to_xml(hand[player], 'hand')

        RoomGame.newRound(self, room_jid, (common_data, msg_elts), profile)

        pl_idx = game_data['current_player'] = (game_data['init_player'] + 1) % len(players)  # the player after the dealer start
        player = players[pl_idx]
        to_jid = jid.JID(room_jid.userhost() + "/" + player)  # FIXME: gof:
        self.send(to_jid, self.__ask_contrat(), profile=profile)

    def room_game_cmd(self, mess_elt, profile):
        """
        @param mess_elt: instance of twisted.words.xish.domish.Element
        """
        from_jid = jid.JID(mess_elt['from'])
        room_jid = jid.JID(from_jid.userhost())
        nick = self.host.plugins["XEP-0045"].getRoomNick(room_jid, profile)

        game_elt = mess_elt.firstChildElement()
        game_data = self.games[room_jid]
        is_player = self.isPlayer(room_jid, nick)
        if 'players_data' in game_data:
            players_data = game_data['players_data']

        for elt in game_elt.elements():
            if not is_player and (elt.name not in ('started', 'players')):
                continue  # user is in the room but not playing

            if elt.name in ('started', 'players'):  # new game created and/or players list updated
                players = []
                for player in elt.elements():
                    players.append(unicode(player))
                signal = self.host.bridge.tarotGameStarted if elt.name == 'started' else self.host.bridge.tarotGamePlayers
                signal(room_jid.userhost(), from_jid.full(), players, profile)

            elif elt.name == 'player_ready':  # ready to play
                player = elt['player']
                status = self.games[room_jid]['status']
                nb_players = len(self.games[room_jid]['players'])
                status[player] = 'ready'
                log.debug(_(u'Player %(player)s is ready to start [status: %(status)s]') % {'player': player, 'status': status})
                if status.values().count('ready') == nb_players:  # everybody is ready, we can start the game
                    self.newRound(room_jid, profile)

            elif elt.name == 'hand':  # a new hand has been received
                self.host.bridge.tarotGameNew(room_jid.userhost(), self.__xml_to_list(elt), profile)

            elif elt.name == 'contrat':  # it's time to choose contrat
                form = data_form.Form.fromElement(elt.firstChildElement())
                session_id, session_data = self._sessions.newSession(profile=profile)
                session_data["room_jid"] = room_jid
                xml_data = xml_tools.dataForm2XMLUI(form, self.__choose_contrat_id, session_id).toXml()
                self.host.bridge.tarotGameChooseContrat(room_jid.userhost(), xml_data, profile)

            elif elt.name == 'contrat_choosed':
                # TODO: check we receive the contrat from the right person
                # TODO: use proper XEP-0004 way for answering form
                player = elt['player']
                players_data[player]['contrat'] = unicode(elt)
                contrats = [players_data[player]['contrat'] for player in game_data['players']]
                if contrats.count(None):
                    # not everybody has choosed his contrat, it's next one turn
                    player = self.__next_player(game_data)
                    to_jid = jid.JID(room_jid.userhost() + "/" + player)  # FIXME: gof:
                    self.send(to_jid, self.__ask_contrat(), profile=profile)
                else:
                    best_contrat = [None, "Passe"]
                    for player in game_data['players']:
                        contrat = players_data[player]['contrat']
                        idx_best = self.contrats.index(best_contrat[1])
                        idx_pl = self.contrats.index(contrat)
                        if idx_pl > idx_best:
                            best_contrat[0] = player
                            best_contrat[1] = contrat
                    if best_contrat[1] == "Passe":
                        log.debug(_("Everybody is passing, round ended"))
                        to_jid = jid.JID(room_jid.userhost())
                        self.send(to_jid, self.__give_scores(*self.__draw_game(game_data)), profile=profile)
                        game_data['init_player'] = (game_data['init_player'] + 1) % len(game_data['players'])  # we change the dealer
                        for player in game_data['players']:
                            game_data['status'][player] = "init"
                        return
                    log.debug(_(u"%(player)s win the bid with %(contrat)s") % {'player': best_contrat[0], 'contrat': best_contrat[1]})
                    game_data['contrat'] = best_contrat[1]

                    if game_data['contrat'] == "Garde Sans" or game_data['contrat'] == "Garde Contre":
                        self.__start_play(room_jid, game_data, profile)
                        game_data['attaquant'] = best_contrat[0]
                    else:
                        # Time to show the chien to everybody
                        to_jid = jid.JID(room_jid.userhost())  # FIXME: gof:
                        elem = self.__card_list_to_xml(game_data['chien'], 'chien')
                        self.send(to_jid, elem, {'attaquant': best_contrat[0]}, profile=profile)
                        # the attacker (attaquant) get the chien
                        game_data['hand'][best_contrat[0]].extend(game_data['chien'])
                        del game_data['chien'][:]

                    if game_data['contrat'] == "Garde Sans":
                        # The chien go into attaquant's (attacker) levees
                        players_data[best_contrat[0]]['levees'].extend(game_data['chien'])
                        del game_data['chien'][:]

            elif elt.name == 'chien':  # we have received the chien
                log.debug(_("tarot: chien received"))
                data = {"attaquant": elt['attaquant']}
                game_data['stage'] = "ecart"
                game_data['attaquant'] = elt['attaquant']
                self.host.bridge.tarotGameShowCards(room_jid.userhost(), "chien", self.__xml_to_list(elt), data, profile)

            elif elt.name == 'cards_played':
                if game_data['stage'] == "ecart":
                    # TODO: show atouts (trumps) if player put some in écart
                    assert (game_data['attaquant'] == elt['player'])  # TODO: throw an xml error here
                    list_cards = TarotCard.from_tuples(self.__xml_to_list(elt))
                    # we now check validity of card
                    invalid_cards = self.__invalid_cards(game_data, list_cards)
                    if invalid_cards:
                        elem = self.__invalid_cards_elt(list_cards, invalid_cards, game_data['stage'])
                        self.send(jid.JID(room_jid.userhost() + '/' + elt['player']), elem, profile=profile)
                        return

                    # FIXME: gof: manage Garde Sans & Garde Contre cases
                    players_data[elt['player']]['levees'].extend(list_cards)  # we add the chien to attaquant's levées
                    for card in list_cards:
                        game_data['hand'][elt['player']].remove(card)

                    self.__start_play(room_jid, game_data, profile)

                elif game_data['stage'] == "play":
                    current_player = game_data['players'][game_data['current_player']]
                    cards = TarotCard.from_tuples(self.__xml_to_list(elt))

                    if mess_elt['type'] == 'groupchat':
                        self.host.bridge.tarotGameCardsPlayed(room_jid.userhost(), elt['player'], self.__xml_to_list(elt), profile)
                    else:
                        # we first check validity of card
                        invalid_cards = self.__invalid_cards(game_data, cards)
                        if invalid_cards:
                            elem = self.__invalid_cards_elt(cards, invalid_cards, game_data['stage'])
                            self.send(jid.JID(room_jid.userhost() + '/' + current_player), elem, profile=profile)
                            return
                        # the card played is ok, we forward it to everybody
                        # first we remove it from the hand and put in on the table
                        game_data['hand'][current_player].remove(cards[0])
                        players_data[current_player]['played'] = cards[0]

                        # then we forward the message
                        self.send(room_jid, elt, profile=profile)

                        # Did everybody played ?
                        played = [players_data[player]['played'] for player in game_data['players']]
                        if all(played):
                            # everybody has played
                            winner = self.__winner(game_data)
                            log.debug(_(u'The winner of this trick is %s') % winner)
                            # the winner win the trick
                            self.__excuse_hack(game_data, played, winner)
                            players_data[elt['player']]['levees'].extend(played)
                            # nothing left on the table
                            for player in game_data['players']:
                                players_data[player]['played'] = None
                            if len(game_data['hand'][current_player]) == 0:
                                # no card left: the game is finished
                                elem = self.__give_scores(*self.__calculate_scores(game_data))
                                self.send(room_jid, elem, profile=profile)
                                game_data['init_player'] = (game_data['init_player'] + 1) % len(game_data['players'])  # we change the dealer
                                for player in game_data['players']:
                                    game_data['status'][player] = "init"
                                return
                            # next player is the winner
                            next_player = game_data['first_player'] = self.__next_player(game_data, winner)
                        else:
                            next_player = self.__next_player(game_data)

                        # finally, we tell to the next player to play
                        to_jid = jid.JID(room_jid.userhost() + "/" + next_player)
                        self.send(to_jid, 'your_turn', profile=profile)

            elif elt.name == 'your_turn':
                self.host.bridge.tarotGameYourTurn(room_jid.userhost(), profile)

            elif elt.name == 'score':
                form_elt = elt.elements(name='x', uri='jabber:x:data').next()
                winners = []
                loosers = []
                for winner in elt.elements(name='winner', uri=NS_CG):
                    winners.append(unicode(winner))
                for looser in elt.elements(name='looser', uri=NS_CG):
                    loosers.append(unicode(looser))
                form = data_form.Form.fromElement(form_elt)
                session_id, session_data = self._sessions.newSession(profile=profile)
                session_data["room_jid"] = room_jid
                xml_data = xml_tools.dataForm2XMLUI(form, self.__score_id, session_id).toXml()
                self.host.bridge.tarotGameScore(room_jid.userhost(), xml_data, winners, loosers, profile)
            elif elt.name == 'error':
                if elt['type'] == 'invalid_cards':
                    played_cards = self.__xml_to_list(elt.elements(name='played', uri=NS_CG).next())
                    invalid_cards = self.__xml_to_list(elt.elements(name='invalid', uri=NS_CG).next())
                    self.host.bridge.tarotGameInvalidCards(room_jid.userhost(), elt['phase'], played_cards, invalid_cards, profile)
                else:
                    log.error(_(u'Unmanaged error type: %s') % elt['type'])
            else:
                log.error(_(u'Unmanaged card game element: %s') % elt.name)

    def getSyncDataForPlayer(self, room_jid, nick):
        return []