#!/usr/bin/env python
#
#    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.

"""
Implements cfn-signal CloudFormation functionality
"""
import argparse
import logging
import os
import sys


if os.path.exists('/opt/aws/bin'):
    sys.path.insert(0, '/opt/aws/bin')
    from cfn_helper import *
else:
    from heat.cfntools.cfn_helper import *


description = " "
parser = argparse.ArgumentParser(description=description)
parser.add_argument('-s', '--success',
        dest="success",
        help="signal status to report",
        default='true',
        required=False)
parser.add_argument('-r', '--reason',
        dest="reason",
        help="The reason for the failure",
        default="Configuration Complete",
        required=False)
parser.add_argument('--data',
        dest="data",
        default="Application has completed configuration.",
        help="The data to send",
        required=False)
parser.add_argument('-i', '--id',
        dest="unique_id",
        help="the unique id to send back to the WaitCondition",
        default='00000',
        required=False)
parser.add_argument('-e', '--exit',
        dest="exit_code",
        help="The exit code from a procecc to interpret",
        default=None,
        required=False)
parser.add_argument('url',
                   help='the url to post to')
args = parser.parse_args()

log_format = '%(levelname)s [%(asctime)s] %(message)s'
logging.basicConfig(format=log_format, level=logging.DEBUG)

logger = logging.getLogger('cfn-init')
log_file_name = "/var/log/cfn-signal.log"
file_handler = logging.FileHandler(log_file_name)
file_handler.setFormatter(logging.Formatter(log_format))
logger.addHandler(file_handler)

logger.debug('cfn-signal called %s ' % (str(args)))

status = 'FAILURE'
if args.exit_code:
    # "exit_code" takes presedence over "success".
    if args.exit_code == '0':
        status = 'SUCCESS'
else:
    if args.success == 'true':
        status = 'SUCCESS'

body = {
    "Status" : status,
    "Reason" : args.reason,
    "UniqueId" : args.unique_id,
    "Data" : args.data
}

cmd_str = "curl -X PUT -H \'Content-Type:\' --data-binary \'%s\' %s" % \
           (json.dumps(body), args.url)
CommandRunner(cmd_str).run()