#!/usr/bin/env python2.7
# -*- coding: utf-8 -*-

from sat.core.i18n import _
from twisted.internet import defer
from sat.core.log import getLogger
log = getLogger('pages/chat')
from sat.tools.common import data_objects
from twisted.words.protocols.jabber import jid
from libervia.server.constants import Const as C
from libervia.server import session_iface

name = u'chat'
access = C.PAGES_ACCESS_PROFILE
template = u"chat/chat.html"
dynamic = True


def parse_url(self, request):
    rdata = self.getRData(request)

    try:
        target_jid_s = self.nextPath(request)
    except IndexError:
        # not chat jid, we redirect to jid selection page
        self.pageRedirect(u"chat_select", request)

    try:
        target_jid = jid.JID(target_jid_s)
        if not target_jid.user:
            raise ValueError(_(u"invalid jid for chat (no local part)"))
    except Exception as e:
        log.warning(_(u"bad chat jid entered: {jid} ({msg})").format(
            jid=target_jid,
            msg = e))
        self.pageError(request, C.HTTP_BAD_REQUEST)
    else:
        rdata['target'] = target_jid


@defer.inlineCallbacks
def prepare_render(self, request):
    # FIXME: bug on room filtering (currently display messages from all rooms)
    session = self.host.getSessionData(request, session_iface.ISATSession)
    template_data = request.template_data
    rdata = self.getRData(request)
    target_jid = rdata['target']
    profile = session.profile
    profile_jid = session.jid

    disco = yield self.host.bridgeCall(u"discoInfos", target_jid.host, u'', True, profile)
    if "conference" in [i[0] for i in disco[1]]:
        chat_type = C.CHAT_GROUP
        join_ret = yield self.host.bridgeCall(u"mucJoin", target_jid.userhost(), "", "", profile)
        already_joined, room_jid_s, occupants, user_nick, room_subject, dummy = join_ret
        template_data[u'subject'] = room_subject
        own_jid = jid.JID(room_jid_s)
        own_jid.resource = user_nick
    else:
        chat_type = C.CHAT_ONE2ONE
        own_jid = profile_jid
    rdata['chat_type'] = chat_type
    template_data['own_jid'] = own_jid

    self.registerSignal(request, u"messageNew")
    history = yield self.host.bridgeCall(u'historyGet', profile_jid.userhost(), target_jid.userhost(), 20, True, {}, profile)
    authors = {m[2] for m in history}
    identities = {}
    for author in authors:
        identities[author] = yield self.host.bridgeCall(u'identityGet', author, profile)

    template_data[u'messages'] = data_objects.Messages(history)
    template_data[u'identities'] = identities
    template_data[u'target_jid'] = target_jid
    template_data[u'chat_type'] = chat_type


def on_data(self, request, data):
    session = self.host.getSessionData(request, session_iface.ISATSession)
    rdata = self.getRData(request)
    target = rdata['target']
    data_type = data.get(u'type', '')
    if data_type == 'msg':
        message = data[u'body']
        mess_type = C.MESS_TYPE_GROUPCHAT if rdata['chat_type'] == C.CHAT_GROUP else C.MESS_TYPE_CHAT
        log.debug(u'message received: {}'.format(message))
        self.host.bridgeCall(u'messageSend', target.full(), {u'': message}, {}, mess_type, {}, session.profile)
    else:
        log.warning(u'unknown message type: {type}'.format(type=data_type))


@defer.inlineCallbacks
def on_signal(self, request, signal, *args):
    if signal == 'messageNew':
        rdata = self.getRData(request)
        template_data = request.template_data
        template_data_update = {u"msg": data_objects.Message((args))}
        target_jid = rdata['target']
        identities = template_data['identities']
        uid, timestamp, from_jid_s, to_jid_s, message, subject, mess_type, extra, dummy = args
        from_jid = jid.JID(from_jid_s)
        to_jid = jid.JID(to_jid_s)
        if (target_jid.userhostJID() != from_jid.userhostJID() and
            target_jid.userhostJID() != to_jid.userhostJID()):
            # the message is not linked with page's room/user
            return


        if from_jid_s not in identities:
            profile = self.getProfile(request)
            identities[from_jid_s] = yield self.host.bridgeCall(u'identityGet', from_jid_s, profile)
            template_data_update['identities'] = identities
        self.renderAndUpdate(request, u"chat/message.html", "#messages",
                             template_data_update)
    else:
        log.error(_(u"Unexpected signal: {signal}").format(signal=signal))