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# org.onap.vvp/validation-scripts
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"""
resource property name
"""
import os
import collections

from .structures import Heat
from .structures import HeatProcessor
from .helpers import validates
from tests.utils import nested_files

VERSION = "1.2.0"


def get_non_servers(heat):
    """
    Return a dict of non servers.  key is rid, value is resource
    """
    non_servers = {
        rid: resource
        for rid, resource in heat.resources.items()
        if heat.nested_get(resource, "type") != "OS::Nova::Server"
    }
    return non_servers


@validates("R-85734")
def test_non_server_name(yaml_file):
    """
    If a VNF's Heat Orchestration Template contains the property ``name``
    for a non ``OS::Nova::Server`` resource, the intrinsic function
    ``str_replace`` **MUST** be used in conjunction with the ONAP
    supplied metadata parameter ``vnf_name`` to generate a unique value.

    """
    h = Heat(filepath=yaml_file)
    non_servers = get_non_servers(h)

    bad = []
    for rid, resource in non_servers.items():
        name = h.nested_get(resource, "properties", "name")
        if not name:
            continue

        # Make sure it uses str_replace
        str_replace = name.get("str_replace") if hasattr(name, "get") else None
        if not str_replace:
            bad.append("{}'s name property does not use str_replace".format(rid))
            continue

        # Make sure str_replace is properly formatted
        if not all(key in str_replace for key in ("template", "params")):
            bad.append(
                (
                    "{}'s name property use of str_replace is "
                    + "missing template, params, or both"
                ).format(rid)
            )
            continue
        params = str_replace["params"]
        if not isinstance(params, dict):
            bad.append(
                (
                    "{}'s name property's use of str_replace.params is "
                    + "missing or invalid"
                ).format(rid)
            )
            continue

        # Find the param that uses vnf_name
        vnf_name_param = None
        for key, value in params.items():
            if not isinstance(value, dict):
                continue
            if value.get("get_param", "") == "vnf_name":
                vnf_name_param = key
                break
        if not vnf_name_param:
            bad.append(
                (
                    "{}'s name property's use str_replace does not "
                    + "use have a params that maps to the parameter "
                    "via {{get_param: vnf_name}}"
                ).format(rid)
            )
            continue

        # make sure the VNF name is used in the template string
        template = str_replace.get("template") or ""
        if vnf_name_param not in template:
            bad.append(
                (
                    "{}'s name property's str_replace template does "
                    + "not incorporate vnf_name; expected {} in "
                    + "template ({})"
                ).format(rid, vnf_name_param, template)
            )
    msg = (
        "Improper name property for" " non-OS::Nova::Server resources. "
    ) + ". ".join(bad)

    assert not bad, msg


@validates("R-85734")
def test_non_server_name_unique(heat_template):
    """Test name has unique value
    """
    list_nest = nested_files.get_list_of_nested_files(
        heat_template, os.path.dirname(heat_template)
    )
    list_nest.append(heat_template)
    non_servers = {}
    for yaml_file in list_nest:
        h = Heat(filepath=yaml_file)
        non_servers.update(get_non_servers(h))
    names = collections.defaultdict(set)
    for rid, resource in non_servers.items():
        name = HeatProcessor.get_str_replace_name(resource)
        if name:
            names[name].add(rid)
    bad = {key: value for key, value in names.items() if len(value) > 1}
    delim = "\n" + 4 * " "
    assert not bad, "Names must be unique," " not shared across resource ids.%s%s" % (
        delim,
        delim.join("%s: %s" % (name, list(value)) for name, value in bad.items()),
    )