#
# -*- coding: utf-8 -*-
# Copyright 2019 Red Hat
# GNU General Public License v3.0+
# (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
"""
The iosxr lacp_interfaces 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 __future__ import absolute_import, division, print_function

__metaclass__ = type


import re
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.argspec.lacp_interfaces.lacp_interfaces import (
    Lacp_interfacesArgs,
)
from ansible.module_utils.six import iteritems


class Lacp_interfacesFacts(object):
    """ The iosxr lacp_interfaces fact class
    """

    def __init__(self, module, subspec="config", options="options"):
        self._module = module
        self.argument_spec = Lacp_interfacesArgs.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 populate_facts(self, connection, ansible_facts, data=None):
        """ Populate the facts for lacp_interfaces
        :param connection: the device connection
        :param ansible_facts: Facts dictionary
        :param data: previously collected conf
        :rtype: dictionary
        :returns: facts
        """

        if not data:
            data = connection.get_config(flags="interface")
        interfaces = ("\n" + data).split("\ninterface ")

        objs = []
        for interface in interfaces:
            obj = self.render_config(self.generated_spec, interface)
            if obj:
                objs.append(obj)

        ansible_facts["ansible_network_resources"].pop("lacp_interfaces", None)
        facts = {}
        if objs:
            facts["lacp_interfaces"] = []
            params = utils.validate_config(
                self.argument_spec, {"config": objs}
            )
            for cfg in params["config"]:
                facts["lacp_interfaces"].append(utils.remove_empties(cfg))

        ansible_facts["ansible_network_resources"].update(facts)
        return ansible_facts

    def render_config(self, spec, conf):
        """
        Render config as dictionary structure and delete keys
          from spec for null values

        :param spec: The facts tree, generated from the argspec
        :param conf: The configuration
        :rtype: dictionary
        :returns: The generated config
        """
        config = deepcopy(spec)

        match = re.search(
            r"(GigabitEthernet|Bundle-Ether|TenGigE|FortyGigE|HundredGigE)(\S+)",
            conf,
            re.M,
        )
        if match:
            config["name"] = match.group(1) + match.group(2)

            temp = {
                "churn_logging": "lacp churn logging",
                "switchover_suppress_flaps": "lacp switchover suppress-flaps",
                "collector_max_delay": "lacp collector-max-delay",
                "period": "lacp period",
            }

            for key, value in iteritems(temp):
                config[key] = utils.parse_conf_arg(conf, value)

            for key in config["system"].keys():
                config["system"][key] = utils.parse_conf_arg(
                    conf, "lacp system {0}".format(key)
                )

        return utils.remove_empties(config)
