# Copyright 2015 - Huawei Technologies Co. Ltd
# Copyright 2015 - StackStorm, Inc.
#
#    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 json

import yaml

from mistralclient import exceptions


def do_action_on_many(action, resources, success_msg, error_msg):
    """Helper to run an action on many resources."""
    failure_flag = False

    for resource in resources:
        try:
            action(resource)
            print(success_msg % resource)
        except Exception as e:
            failure_flag = True
            print(e)

    if failure_flag:
        raise exceptions.MistralClientException(error_msg)


def load_content(content):
    if content is None or content == '':
        return dict()

    try:
        data = yaml.safe_load(content)
    except Exception:
        data = json.loads(content)

    return data


def load_file(path):
    with open(path, 'r') as f:
        return load_content(f.read())