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

"""
SAT: a jabber client
Copyright (C) 2009, 2010  Jérôme Poisson (goffi@goffi.org)

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU 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 General Public License for more details.

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

CONST = {
    'client_name' : u'SàT (Salut à toi)',
    'client_version' : u'0.0.3D',   #Please add 'D' at the end for dev versions
    'local_dir' : '~/.sat'
}

import gettext
gettext.install('sat', "i18n", unicode=True)

from twisted.application import internet, service
from twisted.internet import glib2reactor, protocol, task
glib2reactor.install()

from twisted.words.protocols.jabber import jid, xmlstream
from twisted.words.protocols.jabber import error as jab_error
from twisted.words.xish import domish

from twisted.internet import reactor
import pdb

from wokkel import client, disco, xmppim, generic, compat

from sat.bridge.DBus import DBusBridge
import logging
from logging import debug, info, error

import signal, sys
import os.path

from sat.tools.memory import Memory
from sat.tools.xml_tools import tupleList2dataForm
from glob import glob

try:
    from twisted.words.protocols.xmlstream import XMPPHandler
except ImportError:
    from wokkel.subprotocols import XMPPHandler


### logging configuration FIXME: put this elsewhere ###
logging.basicConfig(level=logging.DEBUG,
                    format='%(message)s')
###


sat_id = 0

def sat_next_id():
    global sat_id
    sat_id+=1
    return "sat_id_"+str(sat_id)

class SatXMPPClient(client.XMPPClient):
    
    def __init__(self, host_app, profile, user_jid, password, host=None, port=5222):
        client.XMPPClient.__init__(self, user_jid, password, host, port)
        self.factory.clientConnectionLost = self.connectionLost
        self.__connected=False
        self.profile = profile
        self.host_app = host_app

    def _authd(self, xmlstream):
        print "SatXMPPClient"
        client.XMPPClient._authd(self, xmlstream)
        self.__connected=True
        info (_("********** [%s] CONNECTED **********") % self.profile)
        self.streamInitialized()
        self.host_app.bridge.connected(self.profile) #we send the signal to the clients

    def streamInitialized(self):
        """Called after _authd"""
        debug (_("XML stream is initialized"))
        self.keep_alife = task.LoopingCall(self.xmlstream.send, " ")  #Needed to avoid disconnection (specially with openfire)
        self.keep_alife.start(180)
        
        self.disco = SatDiscoProtocol(self)
        self.disco.setHandlerParent(self)
        self.discoHandler = disco.DiscoHandler()
        self.discoHandler.setHandlerParent(self)

        self.roster.requestRoster()
        
        self.presence.available()
       
        self.disco.requestInfo(jid.JID(self.host_app.memory.getParamA("Server", "Connection", profile_key=self.profile))).addCallback(self.host_app.serverDisco)  #FIXME: use these informations

    def isConnected(self):
        return self.__connected
    
    def connectionLost(self, connector, unused_reason):
        self.__connected=False
        info (_("********** [%s] DISCONNECTED **********") % self.profile)
        try:
            self.keep_alife.stop()
        except AttributeError:
            debug (_("No keep_alife"))
        self.host_app.bridge.disconnected(self.profile) #we send the signal to the clients


class SatMessageProtocol(xmppim.MessageProtocol):
    
    def __init__(self, host):
        xmppim.MessageProtocol.__init__(self)
        self.host = host

    def onMessage(self, message):
      debug (_(u"got message from: %s"), message["from"])
      for e in message.elements():
        if e.name == "body":
          type = message['type'] if message.hasAttribute('type') else 'chat' #FIXME: check specs
          self.host.bridge.newMessage(message["from"], e.children[0], type, profile=self.parent.profile)
          self.host.memory.addToHistory(self.parent.jid, jid.JID(message["from"]), self.parent.jid, "chat", e.children[0])
          break
    
class SatRosterProtocol(xmppim.RosterClientProtocol):

    def __init__(self, host):
        xmppim.RosterClientProtocol.__init__(self)
        self.host = host
    
    def rosterCb(self, roster):
        for raw_jid, item in roster.iteritems():
            self.onRosterSet(item)

    def requestRoster(self):
        """ ask the server for Roster list """
        debug("requestRoster")
        self.getRoster().addCallback(self.rosterCb)

    def removeItem(self, to):
        """Remove a contact from roster list"""
        xmppim.RosterClientProtocol.removeItem(self, to)
        #TODO: check IQ result
    
    #XXX: disabled (cf http://wokkel.ik.nu/ticket/56))
    #def addItem(self, to):
        #"""Add a contact to roster list"""
        #xmppim.RosterClientProtocol.addItem(self, to)
        #TODO: check IQ result"""

    def onRosterSet(self, item):
        """Called when a new/update roster item is received"""
        #TODO: send a signal to frontends
        item_attr = {'to': str(item.subscriptionTo),
                     'from': str(item.subscriptionFrom),
                     'ask': str(item.ask)
                     }
        if item.name:
            item_attr['name'] = item.name
        info (_("new contact in roster list: %s"), item.jid.full())
        self.host.memory.addContact(item.jid, item_attr, item.groups, self.parent.profile)
        self.host.bridge.newContact(item.jid.full(), item_attr, item.groups, self.parent.profile)
    
    def onRosterRemove(self, entity):
        """Called when a roster removal event is received"""
        #TODO: send a signal to frontends
        print _("removing %s from roster list") % entity.full()
        self.host.memory.delContact(entity, self.parent.profile)

class SatPresenceProtocol(xmppim.PresenceClientProtocol):

    def __init__(self, host):
        xmppim.PresenceClientProtocol.__init__(self)
        self.host = host
    
    def availableReceived(self, entity, show=None, statuses=None, priority=0):
        debug (_("presence update for [%(entity)s] (available, show=%(show)s statuses=%(statuses)s priority=%(priority)d)") % {'entity':entity, 'show':show, 'statuses':statuses, 'priority':priority})
        
        if statuses.has_key(None):   #we only want string keys
            statuses["default"] = statuses[None]
            del statuses[None]

        self.host.memory.addPresenceStatus(entity, show or "",
                int(priority), statuses, self.parent.profile)

        #now it's time to notify frontends
        self.host.bridge.presenceUpdate(entity.full(),  show or "",
                int(priority), statuses, self.parent.profile)
    
    def unavailableReceived(self, entity, statuses=None):
        debug (_("presence update for [%(entity)s] (unavailable, statuses=%(statuses)s)") % {'entity':entity, 'statuses':statuses})
        if statuses and statuses.has_key(None):   #we only want string keys
            statuses["default"] = statuses[None]
            del statuses[None]
        self.host.memory.addPresenceStatus(entity, "unavailable", 0, statuses, self.parent.profile)

        #now it's time to notify frontends
        self.host.bridge.presenceUpdate(entity.full(), "unavailable", 0, statuses, self.parent.profile)
        
    
    def available(self, entity=None, show=None, statuses=None, priority=0):
        if statuses and statuses.has_key('default'):
            statuses[None] = statuses['default']
            del statuses['default']
        xmppim.PresenceClientProtocol.available(self, entity, show, statuses, priority)
    
    def subscribedReceived(self, entity):
        debug (_("subscription approved for [%s]") % entity.userhost())
        self.host.memory.delWaitingSub(entity.userhost(), self.parent.profile)
        self.host.bridge.subscribe('subscribed', entity.userhost(), self.parent.profile)

    def unsubscribedReceived(self, entity):
        debug (_("unsubscription confirmed for [%s]") % entity.userhost())
        self.host.memory.delWaitingSub(entity.userhost(), self.parent.profile)
        self.host.bridge.subscribe('unsubscribed', entity.userhost(), self.parent.profile)

    def subscribeReceived(self, entity):
        debug (_("subscription request for [%s]") % entity.userhost())
        self.host.memory.addWaitingSub('subscribe', entity.userhost(), self.parent.profile)
        self.host.bridge.subscribe('subscribe', entity.userhost(), self.parent.profile)

    def unsubscribeReceived(self, entity):
        debug (_("unsubscription asked for [%s]") % entity.userhost())
        self.host.memory.addWaitingSub('unsubscribe', entity.userhost(), self.parent.profile)
        self.host.bridge.subscribe('unsubscribe', entity.userhost(), self.parent.profile)

class SatDiscoProtocol(disco.DiscoClientProtocol):
    def __init__(self, host):
        disco.DiscoClientProtocol.__init__(self)

class SatFallbackHandler(generic.FallbackHandler):
    def __init__(self, host):
        generic.FallbackHandler.__init__(self)

    def iqFallback(self, iq):
        debug (u"iqFallback: xml = [%s], handled=%s" % (iq.toXml(), "True" if iq.handled else "False"))
        generic.FallbackHandler.iqFallback(self, iq)

class RegisteringAuthenticator(xmlstream.ConnectAuthenticator):

    def __init__(self, host, jabber_host, user_login, user_pass, answer_id):
        xmlstream.ConnectAuthenticator.__init__(self, jabber_host)
        self.host = host
        self.jabber_host = jabber_host
        self.user_login = user_login
        self.user_pass = user_pass
        self.answer_id = answer_id
        print _("Registration asked for"),user_login, user_pass, jabber_host
    
    def connectionMade(self):
        print "connectionMade"
        
        self.xmlstream.namespace = "jabber:client"
        self.xmlstream.sendHeader()

        iq = compat.IQ(self.xmlstream, 'set')
        iq["to"] = self.jabber_host
        query = iq.addElement(('jabber:iq:register', 'query'))
        _user = query.addElement('username')
        _user.addContent(self.user_login)
        _pass = query.addElement('password')
        _pass.addContent(self.user_pass)
        reg = iq.send(self.jabber_host).addCallbacks(self.registrationAnswer, self.registrationFailure)

    def registrationAnswer(self, answer):
        debug (_("registration answer: %s") % answer.toXml())
        answer_type = "SUCCESS"
        answer_data={"message":_("Registration successfull")}
        self.host.bridge.actionResult(answer_type, self.answer_id, answer_data)
        self.xmlstream.sendFooter()
        
    def registrationFailure(self, failure):
        info (_("Registration failure: %s") % str(failure.value))
        answer_type = "ERROR"
        answer_data = {}
        if failure.value.condition == 'conflict':
            answer_data['reason'] = 'conflict'
            answer_data={"message":_("Username already exists, please choose an other one")}
        else:
            answer_data['reason'] = 'unknown'
            answer_data={"message":_("Registration failed (%s)") % str(failure.value.condition)}
        self.host.bridge.actionResult(answer_type, self.answer_id, answer_data)
        self.xmlstream.sendFooter()
        

class SAT(service.Service):
   
    def get_next_id(self):
        return sat_next_id()

    def get_const(self, name):
        """Return a constant"""
        if not CONST.has_key(name):
            error(_('Trying to access an undefined constant'))
            raise Exception
        return CONST[name]

    def set_const(self, name, value):
        """Save a constant"""
        if CONST.has_key(name):
            error(_('Trying to redefine a constant'))
            raise Exception  
        CONST[name] = value
    
    def __init__(self):
        #TODO: standardize callback system
        
        local_dir = os.path.expanduser(self.get_const('local_dir'))
        if not os.path.exists(local_dir):
            os.makedirs(local_dir)

        self.__waiting_conf = {}  #callback called when a confirmation is received
        self.__progress_cb_map = {}  #callback called when a progress is requested (key = progress id)
        self.__general_cb_map = {}  #callback called for general reasons (key = name) 
        self.__private_data = {}  #used for internal callbacks (key = id)
        self.profiles = {}
        self.plugins = {}
        self.menus = {} #used to know which new menus are wanted by plugins
        
        self.memory=Memory(self)
        self.server_features=[]  #XXX: temp dic, need to be transfered into self.memory in the future

        self.bridge=DBusBridge()
        self.bridge.register("getVersion", lambda: self.get_const('client_version'))
        self.bridge.register("getProfileName", self.memory.getProfileName)
        self.bridge.register("getProfilesList", self.memory.getProfilesList)
        self.bridge.register("createProfile", self.memory.createProfile)
        self.bridge.register("deleteProfile", self.memory.deleteProfile)
        self.bridge.register("registerNewAccount", self.registerNewAccount)
        self.bridge.register("connect", self.connect)
        self.bridge.register("disconnect", self.disconnect)
        self.bridge.register("getContacts", self.memory.getContacts)
        self.bridge.register("getPresenceStatus", self.memory.getPresenceStatus)
        self.bridge.register("getWaitingSub", self.memory.getWaitingSub)
        self.bridge.register("sendMessage", self.sendMessage)
        self.bridge.register("setParam", self.setParam)
        self.bridge.register("getParamA", self.memory.getParamA)
        self.bridge.register("getParamsUI", self.memory.getParamsUI)
        self.bridge.register("getParams", self.memory.getParams)
        self.bridge.register("getParamsForCategory", self.memory.getParamsForCategory)
        self.bridge.register("getParamsCategories", self.memory.getParamsCategories)
        self.bridge.register("getHistory", self.memory.getHistory)
        self.bridge.register("setPresence", self.setPresence)
        self.bridge.register("subscription", self.subscription)
        self.bridge.register("addContact", self.addContact)
        self.bridge.register("delContact", self.delContact)
        self.bridge.register("isConnected", self.isConnected)
        self.bridge.register("launchAction", self.launchAction)
        self.bridge.register("confirmationAnswer", self.confirmationAnswer)
        self.bridge.register("getProgress", self.getProgress)
        self.bridge.register("getMenus", self.getMenus)
        self.bridge.register("getMenuHelp", self.getMenuHelp)
        self.bridge.register("callMenu", self.callMenu)

        self._import_plugins()


    def _import_plugins(self):
        """Import all plugins found in plugins directory"""
        #TODO: manage dependencies
        plug_lst = [os.path.splitext(plugin)[0] for plugin in map(os.path.basename,glob ("plugins/plugin*.py"))]

        for plug in plug_lst:
            plug_path = 'plugins.'+plug
            __import__(plug_path)
            mod = sys.modules[plug_path]
            plug_info = mod.PLUGIN_INFO
            info (_("importing plugin: %s"), plug_info['name'])
            self.plugins[plug_info['import_name']] = getattr(mod, plug_info['main'])(self)
            if plug_info.has_key('handler') and plug_info['handler'] == 'yes':
                self.plugins[plug_info['import_name']].is_handler = True
            else:
                self.plugins[plug_info['import_name']].is_handler = False
            #TODO: test xmppclient presence and register handler parent

    def connect(self, profile_key = '@DEFAULT@'):
        """Connect to jabber server"""

        profile = self.memory.getProfileName(profile_key)
        if not profile_key:
            error (_('Trying to connect a non-exsitant profile'))
            return
        
        if (self.isConnected(profile)):
            info(_("already connected !"))
            return
        current = self.profiles[profile] = SatXMPPClient(self, profile,
            jid.JID(self.memory.getParamA("JabberID", "Connection", profile_key = profile_key), profile),
            self.memory.getParamA("Password", "Connection", profile_key = profile_key),
            self.memory.getParamA("Server", "Connection", profile_key = profile_key), 5222)

        current.messageProt = SatMessageProtocol(self)
        current.messageProt.setHandlerParent(current)
        
        current.roster = SatRosterProtocol(self)
        current.roster.setHandlerParent(current)

        current.presence = SatPresenceProtocol(self)
        current.presence.setHandlerParent(current)

        current.fallBack = SatFallbackHandler(self)
        current.fallBack.setHandlerParent(current)

        current.versionHandler = generic.VersionHandler(self.get_const('client_name'),
                                                     self.get_const('client_version'))
        current.versionHandler.setHandlerParent(current)

        debug (_("setting plugins parents"))
        
        for plugin in self.plugins.iteritems():
            if plugin[1].is_handler:
                plugin[1].getHandler(profile).setHandlerParent(current)

        current.startService()
    
    def disconnect(self, profile_key='@DEFAULT@'):
        """disconnect from jabber server"""
        if (not self.isConnected(profile_key)):
            info(_("not connected !"))
            return
        profile = self.memory.getProfileName(profile_key)
        info(_("Disconnecting..."))
        self.profiles[profile].stopService()

    def startService(self):
        info("Salut à toi ô mon frère !")
        #TODO: manage autoconnect
        #self.connect()
    
    def stopService(self):
        self.memory.save()
        info("Salut aussi à Rantanplan")

    def run(self):
        debug(_("running app"))
        reactor.run()
    
    def stop(self):
        debug(_("stopping app"))
        reactor.stop()
        
    ## Misc methods ##
   
    def getJidNStream(self, profile_key):
        """Convenient method to get jid and stream from profile key
        @return: tuple (jid, xmlstream) from profile, can be None"""
        profile = self.memory.getProfileName(profile_key)
        if not profile or not self.profiles[profile].isConnected():
            return (None, None)
        return (self.profiles[profile].jid, self.profiles[profile].xmlstream)

    def getClient(self, profile_key):
        """Convenient method to get client from profile key
        @return: client or None if it doesn't exist"""
        profile = self.memory.getProfileName(profile_key)
        if not profile:
            return None
        return self.profiles[profile]

    def registerNewAccount(self, login, password, server, port = 5222, id = None):
        """Connect to a server and create a new account using in-band registration"""

        next_id = id or sat_next_id()  #the id is used to send server's answer
        serverRegistrer = xmlstream.XmlStreamFactory(RegisteringAuthenticator(self, server, login, password, next_id))
        connector = reactor.connectTCP(server, port, serverRegistrer)
        serverRegistrer.clientConnectionLost = lambda conn, reason: connector.disconnect()
        
        return next_id 

    def registerNewAccountCB(self, id, data, profile):
        user = jid.parse(self.memory.getParamA("JabberID", "Connection", profile_key=profile))[0]
        password = self.memory.getParamA("Password", "Connection", profile_key=profile)
        server = self.memory.getParamA("Server", "Connection", profile_key=profile)

        if not user or not password or not server:
            info (_('No user or server given'))
            #TODO: a proper error message must be sent to frontend
            self.actionResult(id, "ERROR", {'message':_("No user, password or server given, can't register new account.")})
            return

        confirm_id = sat_next_id()
        self.__private_data[confirm_id]=(id,profile)
    
        self.askConfirmation(confirm_id, "YES/NO",
            {"message":_("Are you sure to register new account [%(user)s] to server %(server)s ?") % {'user':user, 'server':server, 'profile':profile}},
            self.regisConfirmCB)
        print ("===============+++++++++++ REGISTER NEW ACCOUNT++++++++++++++============")
        print "id=",id
        print "data=",data

    def regisConfirmCB(self, id, accepted, data):
        print _("register Confirmation CB ! (%s)") % str(accepted)
        action_id,profile = self.__private_data[id]
        del self.__private_data[id]
        if accepted:
            user = jid.parse(self.memory.getParamA("JabberID", "Connection", profile_key=profile))[0]
            password = self.memory.getParamA("Password", "Connection", profile_key=profile)
            server = self.memory.getParamA("Server", "Connection", profile_key=profile)
            self.registerNewAccount(user, password, server, id=action_id)
        else:
            self.actionResult(action_id, "SUPPRESS", {})

    def submitForm(self, action, target, fields, profile_key='@DEFAULT@'):
        """submit a form
        @param target: target jid where we are submitting
        @param fields: list of tuples (name, value)
        @return: tuple: (id, deferred)
        """

        profile = self.memory.getProfileName(profile_key)
        assert(profile)
        to_jid = jid.JID(target)
        
        iq = compat.IQ(self.profiles[profile].xmlstream, 'set')
        iq["to"] = target
        iq["from"] = self.profiles[profile].jid.full()
        query = iq.addElement(('jabber:iq:register', 'query'))
        if action=='SUBMIT':
            form = tupleList2dataForm(fields)
            query.addChild(form.toElement())
        elif action=='CANCEL':
            query.addElement('remove')
        else:
            error (_("FIXME FIXME FIXME: Unmanaged action (%s) in submitForm") % action)
            raise NotImplementedError

        deferred = iq.send(target)
        return (iq['id'], deferred)

    ## Client management ##

    def setParam(self, name, value, category, profile_key='@DEFAULT@'):
        """set wanted paramater and notice observers"""
        info (_("setting param: %(name)s=%(value)s in category %(category)s") % {'name':name, 'value':value, 'category':category})
        self.memory.setParam(name, value, category, profile_key)

    def isConnected(self, profile_key='@DEFAULT@'):
        """Return connection status of profile
        @param profile_key: key_word or profile name to determine profile name
        @return True if connected
        """
        profile = self.memory.getProfileName(profile_key)
        if not profile:
            error (_('asking connection status for a non-existant profile'))
            return
        if not self.profiles.has_key(profile):
            return False
        return self.profiles[profile].isConnected()

    def launchAction(self, type, data, profile_key='@DEFAULT@'):
        """Launch a specific action asked by client
        @param type: action type (button)
        @param data: needed data to launch the action

        @return: action id for result, or empty string in case or error
        """
        profile = self.memory.getProfileName(profile_key)
        if not profile:
            error (_('trying to launch action with a non-existant profile'))
            raise Exception  #TODO: raise a proper exception
        if type=="button":
            try:
                cb_name = data['callback_id']
            except KeyError:
                error (_("Incomplete data"))
                return ""
            id = sat_next_id()
            self.callGeneralCB(cb_name, id, data, profile = profile)
            return id
        else:
            error (_("Unknown action type"))
            return ""


    ## jabber methods ##
    
    def sendMessage(self,to,msg,type='chat', profile_key='@DEFAULT@'):
        #FIXME: check validity of recipient
        profile = self.memory.getProfileName(profile_key)
        assert(profile)
        current_jid = self.profiles[profile].jid
        debug(_("Sending jabber message to %s..."), to)
        message = domish.Element(('jabber:client','message'))
        message["to"] = jid.JID(to).full()
        message["from"] = current_jid.full()
        message["type"] = type
        message.addElement("body", "jabber:client", msg)
        self.profiles[profile].xmlstream.send(message)
        self.memory.addToHistory(current_jid, current_jid, jid.JID(to), message["type"], unicode(msg))
        if type!="groupchat":
            self.bridge.newMessage(message['from'], unicode(msg), to=message['to'], type=type, profile=profile) #We send back the message, so all clients are aware of it


    def setPresence(self, to="", show="", priority = 0, statuses={}, profile_key='@DEFAULT@'):
        """Send our presence information"""
        profile = self.memory.getProfileName(profile_key)
        assert(profile)
        to_jid = jid.JID(to) if to else None
        self.profiles[profile].presence.available(to_jid, show, statuses, priority)
    
    def subscription(self, subs_type, raw_jid, profile_key='@DEFAULT@'):
        """Called to manage subscription
        @param subs_type: subsciption type (cf RFC 3921)
        @param raw_jid: unicode entity's jid
        @param profile_key: profile"""
        profile = self.memory.getProfileName(profile_key)
        assert(profile)
        to_jid = jid.JID(raw_jid)
        debug (_('subsciption request [%(subs_type)s] for %(jid)s') % {'subs_type':subs_type, 'jid':to_jid.full()})
        if subs_type=="subscribe":
            self.profiles[profile].presence.subscribe(to_jid)
        elif subs_type=="subscribed":
            self.profiles[profile].presence.subscribed(to_jid)
            contact = self.memory.getContact(to_jid) 
            if not contact or not bool(contact['to']): #we automatically subscribe to 'to' presence
                debug(_('sending automatic "to" subscription request'))
                self.subscription('subscribe', to_jid.userhost())
        elif subs_type=="unsubscribe":
            self.profiles[profile].presence.unsubscribe(to_jid)
        elif subs_type=="unsubscribed":
            self.profiles[profile].presence.unsubscribed(to_jid)


    def addContact(self, to, profile_key='@DEFAULT@'):
        """Add a contact in roster list"""
        profile = self.memory.getProfileName(profile_key)
        assert(profile)
        to_jid=jid.JID(to)
        #self.profiles[profile].roster.addItem(to_jid) XXX: disabled (cf http://wokkel.ik.nu/ticket/56))
        self.profiles[profile].presence.subscribe(to_jid)

    def delContact(self, to, profile_key='@DEFAULT@'):
        """Remove contact from roster list"""
        profile = self.memory.getProfileName(profile_key)
        assert(profile)
        to_jid=jid.JID(to)
        self.profiles[profile].roster.removeItem(to_jid)
        self.profiles[profile].presence.unsubscribe(to_jid)
        self.bridge.contactDeleted(to, profile)


    ## callbacks ##

    def serverDisco(self, disco):
        """xep-0030 Discovery Protocol."""
        for feature in disco.features:
            debug (_("Feature found: %s"),feature)
            self.server_features.append(feature)
        for cat, type in disco.identities:
            debug (_("Identity found: [%(category)s/%(type)s] %(identity)s") % {'category':cat, 'type':type, 'identity':disco.identities[(cat,type)]})

    
    ## Generic HMI ## 
    
    def actionResult(self, id, type, data):
        """Send the result of an action
        @param id: same id used with action
        @param type: result type ("PARAM", "SUCCESS", "ERROR", "XMLUI")
        @param data: dictionary
        """
        self.bridge.actionResult(type, id, data)

    def actionResultExt(self, id, type, data):
        """Send the result of an action, extended version
        @param id: same id used with action
        @param type: result type /!\ only "DICT_DICT" for this method
        @param data: dictionary of dictionaries
        """
        if type != "DICT_DICT":
            error(_("type for actionResultExt must be DICT_DICT, fixing it"))
            type = "DICT_DICT"
        self.bridge.actionResultExt(type, id, data)



    def askConfirmation(self, id, type, data, cb):
        """Add a confirmation callback
        @param id: id used to get answer
        @param type: confirmation type ("YES/NO", "FILE_TRANSFERT")
        @param data: data (depend of confirmation type)
        @param cb: callback called with the answer
        """
        if self.__waiting_conf.has_key(id):
            error (_("Attempt to register two callbacks for the same confirmation"))
        else:
            self.__waiting_conf[id] = cb
            self.bridge.askConfirmation(type, id, data)


    def confirmationAnswer(self, id, accepted, data):
        """Called by frontends to answer confirmation requests"""
        debug (_("Received confirmation answer for id [%(id)s]: %(success)s") % {'id': id, 'success':_("accepted") if accepted else _("refused")})
        if not self.__waiting_conf.has_key(id):
            error (_("Received an unknown confirmation"))
        else:
            cb = self.__waiting_conf[id]
            del self.__waiting_conf[id]
            cb(id, accepted, data)

    def registerProgressCB(self, id, CB):
        """Register a callback called when progress is requested for id"""
        self.__progress_cb_map[id] = CB

    def removeProgressCB(self, id):
        """Remove a progress callback"""
        if not self.__progress_cb_map.has_key(id):
            error (_("Trying to remove an unknow progress callback"))
        else:
            del self.__progress_cb_map[id]

    def getProgress(self, id):
        """Return a dict with progress information
        data['position'] : current possition
        data['size'] : end_position
        """
        data = {}
        try:
            self.__progress_cb_map[id](data)
        except KeyError:
            pass
            #debug("Requested progress for unknown id")
        return data

    def registerGeneralCB(self, name, CB):
        """Register a callback called for general reason"""
        self.__general_cb_map[name] = CB

    def removeGeneralCB(self, name):
        """Remove a general callback"""
        if not self.__general_cb_map.has_key(name):
            error (_("Trying to remove an unknow general callback"))
        else:
            del self.__general_cb_map[name]

    def callGeneralCB(self, name, *args, **kwargs):
        """Call general function back"""
        try:
            return self.__general_cb_map[name](*args, **kwargs)
        except KeyError:
            error(_("Trying to call unknown function (%s)") % name)
            return None

    #Menus management

    def importMenu(self, category, name, callback, help_string = "", type = "NORMAL"):
        """register a new menu for frontends
        @param category: category of the menu
        @param name: menu item entry
        @param callback: method to be called when menuitem is selected"""
        if self.menus.has_key((category,name)):
            error ("Want to register a menu which already existe")
            return
        self.menus[(category,name,type)] = {'callback':callback, 'help_string':help_string, 'type':type}

    def getMenus(self):
        """Return all menus registered"""
        return self.menus.keys()

    def getMenuHelp(self, category, name, type="NORMAL"):
        """return the help string of the menu"""
        try:
            return self.menus[(category,name,type)]['help_string']
        except KeyError:
            error (_("Trying to access an unknown menu"))
            return ""

    def callMenu(self, category, name, type="NORMAL", profile_key='@DEFAULT@'):
        """return the help string of the menu"""
        profile = self.memory.getProfileName(profile_key)
        if not profile_key:
            error (_('Non-exsitant profile'))
            return ""
        if self.menus.has_key((category,name,type)):
            id = self.get_next_id()
            self.menus[(category,name,type)]['callback'](id, profile)
            return id
        else:
            error (_("Trying to access an unknown menu (%(category)s/%(name)s/%(type)s)")%{'category':category, 'name':name,'type':type})
            return ""



application = service.Application('SàT')
service = SAT()
service.setServiceParent(application)