"""
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 <https://www.gnu.org/licenses/>.

Copyright © 2019 Cloud Linux Software Inc.

This software is also available under ImunifyAV commercial license,
see <https://www.imunify360.com/legal/eula>
"""
from datetime import datetime, timedelta
from logging import getLogger

from imav.malwarelib.model import MalwareHistory, MalwareScan
from defence360agent.mr_proper import BaseCleaner

logger = getLogger(__name__)


class OutdatedScansCleaner(BaseCleaner):
    PERIOD = timedelta(days=1).total_seconds()
    CLEANUP_LIMIT_DELTA = timedelta(days=30)

    @classmethod
    async def cleanup(cls) -> None:
        cleanup_time_limit = int(
            (datetime.now() - cls.CLEANUP_LIMIT_DELTA).timestamp()
        )
        deleted = (
            MalwareScan.delete()
            .where(MalwareScan.started < cleanup_time_limit)
            .execute()
        )
        logger.info("Cleaned %s outdated scans", deleted)


class OutdatedHistoryCleaner(BaseCleaner):
    PERIOD = timedelta(days=1).total_seconds()
    CLEANUP_LIMIT_DELTA = timedelta(days=30)

    @classmethod
    async def cleanup(cls) -> None:
        keep_time_threshold = int(
            (datetime.now() - cls.CLEANUP_LIMIT_DELTA).timestamp()
        )
        deleted = (
            MalwareHistory.delete()
            .where(MalwareHistory.ctime < keep_time_threshold)
            .execute()
        )
        logger.info("Cleaned %s outdated malware history", deleted)