# -*- coding: utf8 -*-
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# org.onap.vvp/validation-scripts
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'''vm-type syntax
'''

import re

import pytest

from .structures import Heat
from .helpers import validates
from .utils import vm_types

VERSION = '1.0.0'

RE_VM_TYPE = re.compile(r'[\w\d_]+$')
RE_VM_TYPE_NG = re.compile(r'.*_int|_?int_.*$')


@validates('R-98407')
def test_vm_type_syntax(heat_template):
    '''
    A VNF's Heat Orchestration Template's ``{vm-type}``
    **MUST** contain only
    alphanumeric characters and/or underscores '_' and **MUST NOT**
    contain any of the following strings:
    ``_int`` or ``int_`` or ``_int_``.
    '''
    v = Heat(filepath=heat_template)
    if not v.resources:
        pytest.skip("No resources")
    t = set()
    t.update(*[vm_types.get_vm_types_for_resource(r)
             for r in v.resources.values()])
    bad = [x for x in t if not RE_VM_TYPE.match(x) or RE_VM_TYPE_NG.match(x)]
    assert not bad, 'bad vm-types %s' % bad