#!/usr/bin/env python

# vim: tabstop=4 shiftwidth=4 softtabstop=4

#    Copyright (C) 2012 Yahoo! Inc. All Rights Reserved.
#
#    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
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
#    License for the specific language governing permissions and limitations
#    under the License.

import os
import logging.config
import sys
import traceback

from devstack import settings

#this needs to happen immediately (or thats what it seems)
LOG_FN = os.getenv(settings.STACK_LOG_ENV_LOCATION)
if not LOG_FN or not os.path.isfile(LOG_FN):
    LOG_FN = settings.STACK_LOG_CFG_LOCATION
logging.config.fileConfig(LOG_FN)

from devstack import opts
from devstack import shell as sh
from devstack import utils

#these are the program runtimes that actually do the running
from devstack.progs import actions


def main():

    #do this first so people can see the help message...
    args = opts.parse()
    prog_name = sys.argv[0]

    #will need root to setup openstack
    if not sh.got_root():
        rest_args = sys.argv[1:]
        print("This program requires a user with sudo access.")
        msg = "Perhaps you should try %s %s" % \
                (utils.color_text("sudo %s" % (prog_name), "red", True), " ".join(rest_args))
        print(msg)
        return 1

    try:
        #drop to usermode
        sh.user_mode(False)
        # now let's go
        started_ok = actions.run(args)
        if not started_ok:
            me = utils.color_text(prog_name, "red", True)
            me += " " + utils.color_text('--help', 'red')
            print("Perhaps you should try %s" % (me))
            return 1
        else:
            utils.goodbye(True)
            return 0
    except Exception:
        utils.goodbye(False)
        traceback.print_exc(file=sys.stdout)
        return 1


if __name__ == "__main__":
    sys.exit(main())