# -*- cpy-indent-level: 4; indent-tabs-mode: nil -*-
# ex: set expandtab softtabstop=4 shiftwidth=4:
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# Copyright (C) 2008,2009,2010,2011,2012,2013,2016  Contributor
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# Licensed under the Apache License, Version 2.0 (the "License");
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"""Contains the logic for `aq del alias`."""

from aquilon.aqdb.model import DnsEnvironment, Alias
from aquilon.worker.broker import BrokerCommand
from aquilon.worker.dbwrappers.dns import delete_dns_record
from aquilon.worker.dbwrappers.service_instance import check_no_provided_service
from aquilon.worker.processes import DSDBRunner


class CommandDelAlias(BrokerCommand):

    required_parameters = ["fqdn"]

    def render(self, session, logger, fqdn, dns_environment, **_):
        dbdns_env = DnsEnvironment.get_unique_or_default(session,
                                                         dns_environment)
        dbdns_rec = Alias.get_unique(session, fqdn=fqdn,
                                     dns_environment=dbdns_env, compel=True)
        domain = dbdns_rec.fqdn.dns_domain.name

        check_no_provided_service(dbdns_rec)

        old_target_fqdn = str(dbdns_rec.target)
        old_comments = dbdns_rec.comments
        target_is_restricted = dbdns_rec.target.dns_domain.restricted
        delete_dns_record(dbdns_rec)

        session.flush()

        if dbdns_env.is_default and domain == "ms.com" and not target_is_restricted:
            dsdb_runner = DSDBRunner(logger=logger)
            dsdb_runner.del_alias(fqdn, old_target_fqdn, old_comments)
            dsdb_runner.commit_or_rollback("Could not delete alias from DSDB")

        return
