# This file is part of naxalnet.
# Copyright (C) 2021 The naxalnet Authors

# 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/>.

"""
log.py
------

Initialise the logger for other submodules to import. Do not
import any submodules here except for naxallnet.config
"""
import logging
from systemd.journal import JournalHandler
from naxalnet.config import args


def get_logger():
    """
    Initialise the logger and return it.
    This function is meant to be used only by naxalnet.log.
    If you want to import the logger, use:
    from naxalnet.log import logger
    """
    log = logging.getLogger("naxalnet")
    # --verbose
    if args.verbose >= 2:
        loglevel = logging.DEBUG
    elif args.verbose == 1:
        loglevel = logging.INFO
    else:
        loglevel = logging.WARNING

    # if --systemd is given, log to systemd journal
    if args.systemd:
        logging.basicConfig(level=logging.DEBUG)
        log.addHandler(JournalHandler())
    else:
        logging.basicConfig(level=loglevel)
    return log


logger = get_logger()