#
# Copyright (C) 2023 Soleta Networks <info@soleta.eu>
#
# This program is free software: you can redistribute it and/or modify it under
# the terms of the GNU Affero General Public License as published by the
# Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.

import logging
import logging.config
import os


class OgError(Exception):
    pass


def _default_logging_linux():
    from src.utils.net import getifaddr
    logconfig = {
        'version': 1,
        'disable_existing_loggers': False,
        'formatters': {
            'formatter.syslog': {
                '()': 'logging.Formatter',
                'format': 'ogClient: [{levelname}] - {message}',
                'style': '{',
            },
            'formatter.console': {
                '()': 'logging.Formatter',
                'format': '[{levelname}] - {message}',
                'style': '{',
            },
            'formatter.syslogtime': {
                '()': 'logging.Formatter',
                'datefmt': '%Y-%m-%d %H:%M:%S',
                'format': '({asctime}) ogClient: [{levelname}] - {message}',
                'style': '{',
            },
        },
        'handlers': {
            'console': {
                'class': 'logging.StreamHandler',
                'formatter': 'formatter.console',
                'stream': 'ext://sys.stdout',
            },
            'syslog': {
                'class': 'logging.handlers.SysLogHandler',
                'formatter': 'formatter.syslog',
                'address': '/dev/log',
            },
        },
        'loggers': {
            '': {
                'handlers': ['syslog', 'console'],
                'level': 'INFO',
            },
        }
    }
    return logconfig


def _default_logging_live():
    from src.utils.net import getifaddr
    logconfig = _default_logging_linux()
    samba = {
            'samba': {
                'class': 'logging.FileHandler',
                'formatter': 'formatter.syslogtime',
                'filename': f'/opt/opengnsys/log/{getifaddr(os.getenv("DEVICE"))}.log',
            }
        }
    rtlog = {
            'rtlog': {
                'class': 'logging.FileHandler',
                'formatter': 'formatter.syslogtime',
                'filename': f'/tmp/session.log',
            }
        }
    logconfig['handlers'].update(samba)
    logconfig['handlers'].update(rtlog)
    logconfig['loggers']['']['handlers'].append('samba')
    logconfig['loggers']['']['handlers'].append('rtlog')
    return logconfig


def _default_logging_win():
    logconfig = {
        'version': 1,
        'disable_existing_loggers': False,
        'formatters': {
            'formatter.console': {
                '()': 'logging.Formatter',
                'format': 'ogClient: [{levelname}] - {message}',
                'style': '{',
            }
        },
        'handlers': {
            'console': {
                'level': 'DEBUG',
                'class': 'logging.StreamHandler',
                'formatter': 'formatter.console',
                'stream': 'ext://sys.stdout',
            },
        },
        'loggers': {
            '': {
                'handlers': ['console'],
                'level': 'DEBUG',
            },
        }
    }
    return logconfig


def configure_logging(mode, level):
    """
    Receives a ogClient operating mode.

    Configures the default logger according to the operating mode.

    For example, in the case of running live mode it will activate
    logging to the expected samba shared log file ({ip}.txt.log).
    """
    if mode == 'windows':
        logconfig = _default_logging_win()
    elif mode == 'linux':
        logconfig = _default_logging_linux()
    elif mode == 'live':
        logconfig = _default_logging_live()
    else:
        raise OgError(f'Logging mode {mode} not supported')

    logconfig['loggers']['']['level'] = level

    logging.config.dictConfig(logconfig)