#!/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-get-metadata CloudFormation functionality
"""
import argparse
import logging


from heat_cfntools.cfntools import cfn_helper

description = " "
parser = argparse.ArgumentParser(description=description)
parser.add_argument('-s', '--stack',
                    dest="stack_name",
                    help="A Heat stack name",
                    required=True)
parser.add_argument('-r', '--resource',
                    dest="logical_resource_id",
                    help="A Heat logical resource ID",
                    required=True)
parser.add_argument('--access-key',
                    dest="access_key",
                    help="A Keystone access key",
                    required=False)
parser.add_argument('--secret-key',
                    dest="secret_key",
                    help="A Keystone secret key",
                    required=False)
parser.add_argument('--region',
                    dest="region",
                    help="Openstack region",
                    required=False)
parser.add_argument('--credential-file',
                    dest="credential_file",
                    help="credential-file",
                    required=False)
parser.add_argument('-u', '--url',
                    dest="url",
                    help="service url",
                    required=False)
parser.add_argument('-k', '--key',
                    dest="key",
                    help="key",
                    required=False)
args = parser.parse_args()

if not args.stack_name:
    print('The Stack name must not be empty.')
    exit(1)

if not args.logical_resource_id:
    print('The Resource ID must not be empty')
    exit(1)

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

LOG = logging.getLogger('cfntools')
log_file_name = "/var/log/cfn-get-metadata.log"
file_handler = logging.FileHandler(log_file_name)
file_handler.setFormatter(logging.Formatter(log_format))
LOG.addHandler(file_handler)

metadata = cfn_helper.Metadata(args.stack_name,
                               args.logical_resource_id,
                               access_key=args.access_key,
                               secret_key=args.secret_key,
                               region=args.region,
                               credentials_file=args.credential_file)
metadata.retrieve()
LOG.debug(str(metadata))
metadata.display(args.key)