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

from tests.helpers import validates
from tests.utils.nested_files import get_nested_files
from tests.structures import Heat, Resource


def non_nested_files(filenames):
    nested_files = get_nested_files(filenames)
    return set(filenames).difference(set(nested_files))


@validates("R-589037")
def test_detected_volume_module_follows_naming_convention(template_dir):
    all_files = [os.path.join(template_dir, f) for f in os.listdir(template_dir)]
    yaml_files = [f for f in all_files if f.endswith(".yaml") or f.endswith(".yml")]
    errors = []
    for yaml_file in non_nested_files(yaml_files):
        heat = Heat(filepath=yaml_file)
        if not heat.resources:
            continue
        base_dir, filename = os.path.split(yaml_file)
        resources = heat.get_all_resources(base_dir)
        non_nested_ids = {
            r_id
            for r_id, r_data in resources.items()
            if not Resource(r_id, r_data).is_nested()
        }
        volume_ids = {
            r_id
            for r_id, r_data in resources.items()
            if Resource(r_id, r_data).resource_type == "OS::Cinder::Volume"
        }
        non_volume_ids = non_nested_ids.difference(volume_ids)
        if non_volume_ids:
            continue  # Not a volume module
        base_name, ext = os.path.splitext(filename)
        if not base_name.endswith("_volume") or ext not in (".yaml", ".yml"):
            errors.append(yaml_file)
        msg = (
            "Volume modules detected, but they do not follow the expected "
            + " naming convention {{module_name}}_volume.[yaml|yml]: {}"
        ).format(", ".join(errors))
        assert not errors, msg