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

import pytest
from tests import cached_yaml as yaml

from .helpers import validates
from .utils.network_roles import get_network_role_from_port, \
    get_network_type_from_port, \
    property_uses_get_resource
from .utils.vm_types import get_vm_type_for_nova_server


@validates('R-69014',
           'R-05201',
           'R-68936',
           'R-32025',
           'R-11168',
           'R-84322',
           'R-96983',
           'R-26506',
           'R-20453',
           'R-26351')
def test_port_resource_ids(heat_template):
    '''
    Check that all resource ids for ports follow the right
    naming convention to include the {vm_type} of the
    nova server it is associated to and also contains the
    {network_role} of the network it is associated with
    '''
    with open(heat_template) as fh:
        yml = yaml.load(fh)

    # skip if resources are not defined
    if "resources" not in yml:
        pytest.skip("No resources specified in the heat template")

    port_patterns = {'internal': re.compile(r'(.+?)_\d+_int_(.+?)_port_\d+'),
                     'external': re.compile(r'(.+?)_\d+_(.+?)_port_\d+')}
    resources = yml['resources']

    invalid_ports = []
    for k, v in resources.items():
        if not isinstance(v, dict):
            continue
        if 'type' not in v:
            continue
        if v['type'] not in 'OS::Nova::Server':
            continue
        if 'properties' not in v:
            continue
        if 'networks' not in v['properties']:
            continue

        has_vm_type = False
        has_network_role = True
        port_resource = None

        vm_type = get_vm_type_for_nova_server(v)
        if not vm_type:
            continue
        vm_type = vm_type.lower()

        # get all ports associated with the nova server
        properties = v['properties']
        for v2 in properties['networks']:
            for k3, v3 in v2.items():
                if k3 != 'port':
                    continue
                if not isinstance(v3, dict):
                    continue

                if 'get_param' in v3:
                    continue
                elif 'get_resource' in v3:
                    port_id = v3['get_resource']
                    if not resources[port_id]:
                        continue
                    port_resource = resources[port_id]
                    port_id = port_id.lower()
                else:
                    continue

                has_vm_type = vm_type + "_" in port_id
                has_network_role = False

                if port_resource:
                    if property_uses_get_resource(v, "network"):
                        continue
                    network_role = get_network_role_from_port(port_resource)
                    if not network_role:
                        continue
                    network_role = network_role.lower()

                    network_type = get_network_type_from_port(port_resource)
                    if not network_type:
                        continue

                    if port_patterns[network_type].match(port_id):
                        has_network_role = True
                else:
                    # match the assumed naming convention for ports
                    # if the specified port is provided via get_param
                    network_type = 'external'
                    if "int_" in port_id:
                        network_type = 'internal'
                    if port_patterns[network_type].match(port_id):
                        has_network_role = True

                if has_vm_type and has_network_role:
                    continue
                invalid_ports.append(port_id)

    assert not set(invalid_ports)