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# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
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# software distributed under the License is distributed on an
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import logging
from datetime import datetime, timedelta

from superset.commands.base import BaseCommand
from superset.dao.exceptions import DAODeleteFailedError
from superset.models.reports import ReportSchedule
from superset.reports.commands.exceptions import ReportSchedulePruneLogError
from superset.reports.dao import ReportScheduleDAO
from superset.utils.celery import session_scope

logger = logging.getLogger(__name__)


class AsyncPruneReportScheduleLogCommand(BaseCommand):
    """
    Prunes logs from all report schedules
    """

    def __init__(self, worker_context: bool = True):
        self._worker_context = worker_context

    def run(self) -> None:
        with session_scope(nullpool=True) as session:
            self.validate()
            prune_errors = []

            for report_schedule in session.query(ReportSchedule).all():
                if report_schedule.log_retention is not None:
                    from_date = datetime.utcnow() - timedelta(
                        days=report_schedule.log_retention
                    )
                    try:
                        row_count = ReportScheduleDAO.bulk_delete_logs(
                            report_schedule, from_date, session=session, commit=False
                        )
                        logger.info(
                            "Deleted %s logs for %s",
                            str(row_count),
                            ReportSchedule.name,
                        )
                    except DAODeleteFailedError as ex:
                        prune_errors.append(str(ex))
            if prune_errors:
                raise ReportSchedulePruneLogError(";".join(prune_errors))

    def validate(self) -> None:
        pass