# 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/>.

from typing import Any

import argparse
import logging
import sys

from gi.repository import Gio
from gi.repository import GLib

LOG_FORMAT = '%(asctime)s %(levelname)s %(message)s'
logging.basicConfig(level=logging.INFO, format=LOG_FORMAT)
log = logging.getLogger()


OBJ_PATH = '/org/gajim/dbus/RemoteObject'
INTERFACE = 'org.gajim.dbus.RemoteInterface'
SERVICE = 'org.gajim.Gajim'

SIGNATURES = {
    'list_contacts': '(s)',
    'list_accounts': '()',
    'change_status': '(sss)',
    'send_chat_message': '(sss)',
    'send_groupchat_message': '(sss)',
    'account_info': '(s)',
    'get_status': '(s)',
    'get_status_message': '(s)',
    'get_unread_msgs_number': '()',
}


def call_method(args: argparse.Namespace) -> Any:
    arg_dict = vars(args)
    app_id = arg_dict.pop('app_id')
    command = arg_dict.pop('command')

    proxy = Gio.DBusProxy.new_for_bus_sync(
        Gio.BusType.SESSION,
        Gio.DBusProxyFlags.NONE,
        None,
        app_id,
        OBJ_PATH,
        INTERFACE,
        None)

    arguments = tuple(arg_dict.values())
    signature = SIGNATURES[command]
    method = getattr(proxy, command)
    return method(signature, *arguments)


def create_arg_parser() -> argparse.ArgumentParser:

    account_help = 'The account the command is executed for'

    parser = argparse.ArgumentParser(prog='gajim-remote')
    parser.add_argument('--app-id', default=SERVICE)

    subparsers = parser.add_subparsers(required=True,
                                       metavar='commands',
                                       dest='command')

    subparser = subparsers.add_parser(
        'list_contacts',
        help='Get all roster contacts')
    subparser.add_argument('account', type=str)

    subparser = subparsers.add_parser(
        'list_accounts',
        help='Get the list of accounts')

    subparser = subparsers.add_parser(
        'change_status',
        help='Change the status')
    subparser.add_argument('status',
                           choices=['offline', 'online', 'away', 'xa', 'dnd'])
    subparser.add_argument('message', type=str)
    subparser.add_argument('account', type=str)

    subparser = subparsers.add_parser(
        'send_chat_message',
        help='Send a chat message to a contact')
    subparser.add_argument('address', type=str,
                           help='The XMPP address of the contact')
    subparser.add_argument('message', type=str,
                           help='The message to be sent')
    subparser.add_argument('account', type=str,
                           help=account_help)

    subparser = subparsers.add_parser(
        'send_groupchat_message',
        help='Send a chat message to a group chat')
    subparser.add_argument('address', type=str,
                           help='The XMPP address of the group chat')
    subparser.add_argument('message', type=str,
                           help='The message to be sent')
    subparser.add_argument('account', type=str,
                           help=account_help)

    subparser = subparsers.add_parser(
        'account_info',
        help='Get account details')
    subparser.add_argument('account', type=str, help=account_help)

    subparser = subparsers.add_parser(
        'get_status',
        help='Get the current status')
    subparser.add_argument('account', type=str, help=account_help)

    subparser = subparsers.add_parser(
        'get_status_message',
        help='Get the current status message')
    subparser.add_argument('account', type=str, help=account_help)

    subparser = subparsers.add_parser(
        'get_unread_msgs_number',
        help='Get the unread message count')

    return parser


def run() -> None:
    args = create_arg_parser().parse_args()
    try:
        result = call_method(args)
    except GLib.Error as error:
        quark = GLib.quark_try_string('g-dbus-error-quark')
        if error.matches(quark, Gio.DBusError.SERVICE_UNKNOWN):
            log.error('Service not found. Check if Gajim is running. '
                      'If Gajim is running under a custom profile use '
                      '--app-id=org.gajim.Gajim.myprofilename')

        else:
            log.exception('Failed to execute method')

        sys.exit(1)

    except Exception:
        log.exception('Failed to execute method')
        sys.exit(1)

    print(result)