# -*- coding: utf-8 -*-
# Copyright 2021 Red Hat
# GNU General Public License v3.0+
# (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)

from __future__ import absolute_import, division, print_function

__metaclass__ = type

"""
The iosxr bgp_neighbor_address_family fact class
It is in this file the configuration is collected from the device
for a given resource, parsed, and the facts tree is populated
based on the configuration.
"""

from copy import deepcopy

from ansible_collections.ansible.netcommon.plugins.module_utils.network.common import (
    utils,
)
from ansible_collections.cisco.iosxr.plugins.module_utils.network.iosxr.rm_templates.bgp_neighbor_address_family import (
    Bgp_neighbor_address_familyTemplate,
)
from ansible_collections.cisco.iosxr.plugins.module_utils.network.iosxr.argspec.bgp_neighbor_address_family.bgp_neighbor_address_family import (
    Bgp_neighbor_address_familyArgs,
)
from ansible_collections.cisco.iosxr.plugins.module_utils.network.iosxr.utils.utils import (
    flatten_config,
)


class Bgp_neighbor_address_familyFacts(object):
    """ The iosxr bgp_neighbor_address_family facts class
    """

    def __init__(self, module, subspec="config", options="options"):
        self._module = module
        self.argument_spec = Bgp_neighbor_address_familyArgs.argument_spec
        spec = deepcopy(self.argument_spec)
        if subspec:
            if options:
                facts_argument_spec = spec[subspec][options]
            else:
                facts_argument_spec = spec[subspec]
        else:
            facts_argument_spec = spec

        self.generated_spec = utils.generate_dict(facts_argument_spec)

    def get_config(self, connection):
        return connection.get("show running-config router bgp")

    def populate_facts(self, connection, ansible_facts, data=None):
        """ Populate the facts for Bgp_address_family network resource
        :param connection: the device connection
        :param ansible_facts: Facts dictionary
        :param data: previously collected conf
        :rtype: dictionary
        :returns: facts
        """
        facts = {}
        objs = []
        if not data:
            data = self.get_config(connection)
        nbr_data = flatten_config(data, "neighbor")
        data = flatten_config(nbr_data, "vrf")
        # parse native config using the Bgp_global template
        bgp_global_parser = Bgp_neighbor_address_familyTemplate(
            lines=data.splitlines()
        )
        objs = bgp_global_parser.parse()

        if objs:
            top_lvl_nbrs = objs.get("vrfs", {}).pop("vrf_", {})
            objs["neighbors"] = self._post_parse(top_lvl_nbrs).get(
                "neighbors", []
            )

            if "vrfs" in objs:
                for vrf in objs["vrfs"].values():
                    vrf["neighbors"] = self._post_parse(vrf)["neighbors"]
                objs["vrfs"] = list(objs["vrfs"].values())

        ansible_facts["ansible_network_resources"].pop(
            "bgp_neighbor_address_family", None
        )

        params = utils.remove_empties(
            utils.validate_config(self.argument_spec, {"config": objs})
        )

        facts["bgp_neighbor_address_family"] = params.get("config", {})
        ansible_facts["ansible_network_resources"].update(facts)

        return ansible_facts

    def _post_parse(self, data):
        """ Converts the intermediate data structure
            to valid format as per argspec.
        :param obj: dict
        """
        if "neighbors" in data:
            data["neighbors"] = sorted(
                list(data["neighbors"].values()),
                key=lambda k, s="neighbor_address": k[s],
            )
            for nbr in data["neighbors"]:
                nbr["address_family"] = list(nbr["address_family"].values())
        return data
