#!/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.

import os
import re
import sys

from heat.common import template_format


def main():
    path = sys.argv[1]
    if os.path.isdir(path):
        convert_directory(path)
    elif os.path.isfile(path):
        convert_file(path)
    else:
        print('File or directory not valid: %s' % path)


def convert_file(path):
    f = open(path, 'r')
    print(template_format.convert_json_to_yaml(f.read()))


def convert_directory(dirpath):
    for path in os.listdir(dirpath):
        if not path.endswith('.template') and not path.endswith('.json'):
            continue
        yamlpath = re.sub('\..*$', '.yaml', path)
        print('Writing to %s' % yamlpath)
        f = open(os.path.join(dirpath, path), 'r')
        out = open(os.path.join(dirpath, yamlpath), 'w')
        yml = template_format.convert_json_to_yaml(f.read())
        out.write(yml)
        out.close()

if __name__ == '__main__':
    main()