# -*- coding: utf8 -*-
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# org.onap.vvp/validation-scripts
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import collections
import os

from tests import cached_yaml as yaml

from .helpers import validates


@validates("R-16447")
def test_unique_resources_across_all_yaml_files(yaml_files):
    """
    Check that all instance names are unique
    across all yaml files.
    """
    resources_ids = collections.defaultdict(set)
    for yaml_file in yaml_files:
        with open(yaml_file) as fh:
            yml = yaml.load(fh)
        if "resources" not in yml:
            continue
        for resource_id in yml["resources"]:
            resources_ids[resource_id].add(os.path.split(yaml_file)[1])

    dup_ids = {r_id: files for r_id, files in resources_ids.items() if len(files) > 1}

    msg = "The following resource IDs are duplicated in one or more files: "
    errors = [
        "ID ({}) appears in {}.".format(r_id, ", ".join(files))
        for r_id, files in dup_ids.items()
    ]
    msg += ", ".join(errors)
    assert not dup_ids, msg