#!/usr/bin/env python3

from libervia.backend.core.i18n import _
from twisted.internet import defer
from libervia.backend.core.log import getLogger
from libervia.backend.tools.common import data_objects
from libervia.backend.tools.common import data_format
from libervia.frontends.tools import jid
from libervia.web.server.constants import Const as C
from libervia.web.server import session_iface


log = getLogger(__name__)

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


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

    try:
        target_jid_s = self.next_path(request)
    except IndexError:
        # not chat jid, we redirect to jid selection page
        self.page_redirect("chat_select", request)
        return

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


async def prepare_render(self, request):
    #  FIXME: bug on room filtering (currently display messages from all rooms)
    session = self.host.get_session_data(request, session_iface.IWebSession)
    template_data = request.template_data
    rdata = self.get_r_data(request)
    target_jid = rdata["target"]
    profile = session.profile
    profile_jid = session.jid

    disco = await self.host.bridge_call(
        "disco_infos", target_jid.domain, "", True, profile
    )
    if "conference" in [i[0] for i in disco[1]]:
        chat_type = C.CHAT_GROUP
        join_ret = await self.host.bridge_call(
            "muc_join", target_jid.bare, "", "", profile
        )
        (already_joined,
         room_jid_s,
         occupants,
         user_nick,
         room_subject,
         room_statuses,
         __) = join_ret
        template_data["subject"] = room_subject
        template_data["room_statuses"] = room_statuses
        own_local_jid = jid.JID(room_jid_s)
        own_local_jid = own_local_jid.change_resource(user_nick)
    else:
        room_subject = None
        chat_type = C.CHAT_ONE2ONE
        own_local_jid = profile_jid
    rdata["chat_type"] = chat_type
    template_data["own_local_jid"] = own_local_jid

    history = await self.host.bridge_call(
        "history_get",
        profile_jid.userhost(),
        target_jid.bare,
        20,
        True,
        {},
        profile,
    )

    authors = {m[2] for m in history}
    identities = session.identities
    for author in authors:
        id_raw = await self.host.bridge_call(
            "identity_get", author, [], True, profile)
        identities[author] = data_format.deserialise(id_raw)

    template_data["messages"] = data_objects.Messages(history)
    rdata['identities'] = identities
    template_data["target_jid"] = target_jid
    template_data["chat_type"] = chat_type
    self.expose_to_scripts(
        request,
        room_subject=room_subject,
        own_local_jid=str(own_local_jid),
        target_jid=target_jid,
        chat_type=chat_type,
    )


def on_data(self, request, data):
    session = self.host.get_session_data(request, session_iface.IWebSession)
    rdata = self.get_r_data(request)
    target = rdata["target"]
    data_type = data.get("type", "")
    if data_type == "msg":
        message = data["body"]
        mess_type = (
            C.MESS_TYPE_GROUPCHAT
            if rdata["chat_type"] == C.CHAT_GROUP
            else C.MESS_TYPE_CHAT
        )
        log.debug("message received: {}".format(message))
        self.host.bridge_call(
            "message_send",
            target.full(),
            {"": message},
            {},
            mess_type,
            "",
            session.profile,
        )
    else:
        log.warning("unknown message type: {type}".format(type=data_type))