# This file is part of Gajim.
#
# Gajim 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; version 3 only.
#
# Gajim 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 Gajim.  If not, see <http://www.gnu.org/licenses/>.

# XEP-0199: XMPP Ping

from typing import Any
from typing import Tuple
from typing import Generator

import time

from nbxmpp.errors import is_error

from gajim.common import app
from gajim.common.nec import NetworkEvent
from gajim.common.types import ConnectionT
from gajim.common.types import ContactsT
from gajim.common.modules.base import BaseModule
from gajim.common.modules.util import as_task


class Ping(BaseModule):

    _nbxmpp_extends = 'Ping'
    _nbxmpp_methods = [
        'ping',
    ]

    def __init__(self, con: ConnectionT) -> None:
        BaseModule.__init__(self, con)

        self.handlers = []

    @as_task
    def send_ping(self, contact: ContactsT) -> Generator:
        _task = yield

        if not app.account_is_available(self._account):
            return

        jid = contact.get_full_jid()

        self._log.info('Send ping to %s', jid)

        app.nec.push_incoming_event(NetworkEvent('ping-sent',
                                                 account=self._account,
                                                 contact=contact))

        ping_time = time.time()

        response = yield self.ping(jid, timeout=10)
        if is_error(response):
            app.nec.push_incoming_event(NetworkEvent(
                'ping-error',
                account=self._account,
                contact=contact,
                error=str(response)))
            return

        diff = round(time.time() - ping_time, 2)
        self._log.info('Received pong from %s after %s seconds',
                       response.jid, diff)

        app.nec.push_incoming_event(NetworkEvent('ping-reply',
                                                 account=self._account,
                                                 contact=contact,
                                                 seconds=diff))


def get_instance(*args: Any, **kwargs: Any) -> Tuple[Ping, str]:
    return Ping(*args, **kwargs), 'Ping'