# -*- coding: utf8 -*-
# ============LICENSE_START=======================================================
# org.onap.vvp/validation-scripts
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# Unless otherwise specified, all software contained herein is licensed
# under the Apache License, Version 2.0 (the “License”);
# you may not use this software except in compliance with the License.
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#             http://www.apache.org/licenses/LICENSE-2.0
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# Unless otherwise specified, all documentation contained herein is licensed
# under the Creative Commons License, Attribution 4.0 Intl. (the “License”);
# you may not use this documentation except in compliance with the License.
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#             https://creativecommons.org/licenses/by/4.0/
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from os import path
import yaml

VERSION = '1.0.0'


def get_volume_resources(heat_template):
    '''
    get the resources from the volume template
    Note: Returns an empty dict if there is no
    volume template or for any other error
    '''
    basename = path.splitext(heat_template)[0]

    for ext in ['.yaml', '.yml']:
        volume_template = basename + '_volume' + ext
        if path.isfile(volume_template):
            break
    else:
        return {}

    try:
        with open(volume_template) as fh:
            yml = yaml.load(fh)
    except yaml.YAMLError as e:
        print(e)    # pylint: disable=superfluous-parens
        return {}

    if 'outputs' not in yml:
        return {}
    if 'resources' not in yml:
        return {}

    return yml['resources']