# -*- cpy-indent-level: 4; indent-tabs-mode: nil -*-
# ex: set expandtab softtabstop=4 shiftwidth=4:
#
# Copyright (C) 2009,2010,2011,2012,2013,2016  Contributor
#
# Licensed 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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# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
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from aquilon.exceptions_ import ArgumentError
from aquilon.aqdb.model import Archetype, Personality
from aquilon.worker.broker import BrokerCommand


class CommandDelArchetype(BrokerCommand):

    required_parameters = ["archetype"]

    def render(self, session, archetype, **_):
        dbarch = Archetype.get_unique(session, archetype, compel=True)

        # Check dependencies
        q = session.query(Personality)
        q = q.filter_by(archetype=dbarch)
        q = q.order_by(Personality.name)

        row = q.first()
        if row:
            raise ArgumentError("{0} is still in use by {1:l} and cannot be "
                                "deleted.".format(dbarch, row))
        session.delete(dbarch)
        session.flush()
        return
