#
# Copyright (C) 2013 GNS3 Technologies Inc.
#
# 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/>.

"""
Interface for UNIX NIOs (Unix based OSes only).
"""

import asyncio
import uuid
from .nio import NIO

import logging

log = logging.getLogger(__name__)


class NIOUNIX(NIO):

    """
    Dynamips UNIX NIO.

    :param hypervisor: Dynamips hypervisor instance
    :param local_file: local UNIX socket filename
    :param remote_file: remote UNIX socket filename
    """

    def __init__(self, hypervisor, local_file, remote_file):

        # create an unique name
        name = f"unix-{uuid.uuid4()}"
        self._local_file = local_file
        self._remote_file = remote_file
        super().__init__(name, hypervisor)

    async def create(self):

        await self._hypervisor.send(
            "nio create_unix {name} {local} {remote}".format(
                name=self._name, local=self._local_file, remote=self._remote_file
            )
        )

        log.info(
            "NIO UNIX {name} created with local file {local} and remote file {remote}".format(
                name=self._name, local=self._local_file, remote=self._remote_file
            )
        )

    @property
    def local_file(self):
        """
        Returns the local UNIX socket.

        :returns: local UNIX socket filename
        """

        return self._local_file

    @property
    def remote_file(self):
        """
        Returns the remote UNIX socket.

        :returns: remote UNIX socket filename
        """

        return self._remote_file

    def __json__(self):

        return {
            "type": "nio_unix",
            "local_file": self._local_file,
            "remote_file": self._remote_file
        }