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#       to you under the Apache License, Version 2.0 (the
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#
#         http://www.apache.org/licenses/LICENSE-2.0
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import logging

import argparse

from allura.model import main_orm_session, main_explicitflush_orm_session

from allura.scripts import ScriptTask
from allura import model as M
from allura.lib.plugin import AuthenticationProvider
from allura.lib.utils import chunked_find

log = logging.getLogger('allura.scripts.backfill_previous_login_details')


class BackfillPreviousLoginDetails(ScriptTask):

    @classmethod
    def parser(cls):
        return argparse.ArgumentParser(description="Backfill previous login details from audit logs.  "
                                                   "Needed if auth.hibp_failure_force_pwd_change is enabled")

    @classmethod
    def execute(cls, options):
        auth_provider = AuthenticationProvider.get(None)
        for i, chunk in enumerate(chunked_find(M.User, {}, pagesize=2)):
            log.info('Backfilling login details for chunk #%s', i)
            for u in chunk:
                try:
                    u.backfill_login_details(auth_provider)
                except Exception:
                    log.exception('Error backfilling on user %s', u)

            main_orm_session.clear()  # AuditLog and User objs
            main_explicitflush_orm_session.clear()  # UserLoginDetails objs, already flushed individually

        log.info('Finished backfilling previous login details')


if __name__ == '__main__':
    BackfillPreviousLoginDetails.main()