#!/usr/bin/python
# -*- coding: utf-8 -*-

# (c) 2017, Ansible by Red Hat, inc
# 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


DOCUMENTATION = """
module: nxos_l3_interface
author: Trishna Guha (@trishnaguha)
short_description: (deprecated, removed after 2022-06-01) Manage L3 interfaces
  on Cisco NXOS network devices
description:
- This module provides declarative management of L3 interfaces on Cisco NXOS network
  devices.
version_added: 1.0.0
deprecated:
  alternative: nxos_l3_interfaces
  why: Updated modules released with more functionality
  removed_at_date: '2022-06-01'
notes:
- Tested against NXOSv 7.0(3)I5(1).
- Unsupported for Cisco MDS
options:
  name:
    description:
    - Name of the L3 interface.
    type: str
  ipv4:
    description:
    - IPv4 of the L3 interface.
    type: str
  ipv6:
    description:
    - IPv6 of the L3 interface.
    type: str
  aggregate:
    description: List of L3 interfaces definitions.
    type: list
    elements: dict
    suboptions:
      name:
        description:
        - Name of the L3 interface.
        type: str
      ipv4:
        description:
        - IPv4 of the L3 interface.
        type: str
      ipv6:
        description:
        - IPv6 of the L3 interface.
        type: str
      state:
        description:
        - State of the L3 interface configuration.
        choices:
        - present
        - absent
        type: str
  state:
    description:
    - State of the L3 interface configuration.
    default: present
    choices:
    - present
    - absent
    type: str
extends_documentation_fragment:
- cisco.nxos.nxos
"""

EXAMPLES = """
- name: Set interface IPv4 address
  cisco.nxos.nxos_l3_interface:
    name: Ethernet2/3
    ipv4: 192.168.0.1/24

- name: Remove interface IPv4 address
  cisco.nxos.nxos_l3_interface:
    name: Ethernet2/3
    state: absent

- name: Set IP addresses on aggregate
  cisco.nxos.nxos_l3_interface:
    aggregate:
    - {name: "Ethernet2/1", ipv4: "192.168.2.10/24"}
    - {name: "Ethernet2/5", ipv4: "192.168.3.10/24", ipv6: "fd5d:12c9:2201:1::1/64"}

- name: Remove IP addresses on aggregate
  cisco.nxos.nxos_l3_interface:
    aggregate:
    - {name: "Ethernet2/1", ipv4: "192.168.2.10/24"}
    - {name: "Ethernet2/5", ipv4: "192.168.3.10/24", ipv6: "fd5d:12c9:2201:1::1/64"}
    state: absent
"""

RETURN = """
commands:
  description: The list of configuration mode commands to send to the device
  returned: always, except for the platforms that use Netconf transport to manage the device.
  type: list
  sample:
    - interface ethernet2/3
    - no switchport
    - ip address 192.168.22.1/24
    - ipv6 address "fd5d:12c9:2201:1::1/64"
    - no ip address 192.168.22.1/24
"""

import re

from copy import deepcopy

from ansible.module_utils.basic import AnsibleModule
from ansible_collections.ansible.netcommon.plugins.module_utils.network.common.config import (
    CustomNetworkConfig,
)
from ansible_collections.ansible.netcommon.plugins.module_utils.network.common.utils import (
    remove_default_spec,
)
from ansible_collections.cisco.nxos.plugins.module_utils.network.nxos.nxos import (
    get_config,
    load_config,
)
from ansible_collections.cisco.nxos.plugins.module_utils.network.nxos.nxos import (
    nxos_argument_spec,
    normalize_interface,
)


def search_obj_in_list(name, lst):
    for o in lst:
        if o["name"] == name:
            return o


def map_obj_to_commands(updates, module, warnings):
    commands = list()
    want, have = updates

    for w in want:
        name = w["name"]
        ipv4 = w["ipv4"]
        ipv6 = w["ipv6"]
        state = w["state"]
        del w["state"]

        obj_in_have = search_obj_in_list(name, have)

        if not obj_in_have:
            warnings.append("Unknown interface {0}".format(name))
        elif state == "absent":
            command = []
            if obj_in_have["name"] == name:
                if ipv4 and ipv4 == obj_in_have["ipv4"]:
                    command.append("no ip address {0}".format(ipv4))
                if ipv6 and ipv6 in obj_in_have["ipv6"]:
                    command.append("no ipv6 address {0}".format(ipv6))
                if command:
                    command.append("exit")
                    command.insert(0, "interface {0}".format(name))
            commands.extend(command)

        elif state == "present":
            command = []
            if obj_in_have["name"] == name:
                if ipv4 and ipv4 != obj_in_have["ipv4"]:
                    command.append("ip address {0}".format(ipv4))
                if ipv6 and ipv6 not in obj_in_have["ipv6"]:
                    command.append("ipv6 address {0}".format(ipv6))
                if command:
                    command.append("exit")
                    command.insert(0, "interface {0}".format(name))
                elif not ipv4 and not ipv6:
                    command.append("interface {0}".format(name))
            commands.extend(command)

    return commands


def map_params_to_obj(module):
    obj = []

    aggregate = module.params.get("aggregate")
    if aggregate:
        for item in aggregate:
            for key in item:
                if item.get(key) is None:
                    item[key] = module.params[key]

            d = item.copy()
            name = d["name"]
            d["name"] = normalize_interface(name)
            obj.append(d)

    else:
        obj.append(
            {
                "name": normalize_interface(module.params["name"]),
                "ipv4": module.params["ipv4"],
                "ipv6": module.params["ipv6"],
                "state": module.params["state"],
            }
        )

    return obj


def map_config_to_obj(want, module):
    objs = list()
    netcfg = CustomNetworkConfig(indent=2, contents=get_config(module))

    for w in want:
        parents = ["interface {0}".format(w["name"])]
        config = netcfg.get_section(parents)
        obj = dict(name=None, ipv4=None, ipv6=[])

        if config:
            match_name = re.findall(r"interface (\S+)", config, re.M)
            if match_name:
                obj["name"] = normalize_interface(match_name[0])

            match_ipv4 = re.findall(r"ip address (\S+)", config, re.M)
            if match_ipv4:
                obj["ipv4"] = match_ipv4[0]

            match_ipv6 = re.findall(r"ipv6 address (\S+)", config, re.M)
            if match_ipv6:
                obj["ipv6"] = match_ipv6

            objs.append(obj)
    return objs


def main():
    """main entry point for module execution"""
    element_spec = dict(
        name=dict(),
        ipv4=dict(),
        ipv6=dict(),
        state=dict(default="present", choices=["present", "absent"]),
    )

    aggregate_spec = deepcopy(element_spec)

    # remove default in aggregate spec, to handle common arguments
    remove_default_spec(aggregate_spec)

    argument_spec = dict(
        aggregate=dict(type="list", elements="dict", options=aggregate_spec)
    )

    argument_spec.update(element_spec)
    argument_spec.update(nxos_argument_spec)

    required_one_of = [["name", "aggregate"]]
    mutually_exclusive = [["name", "aggregate"]]
    module = AnsibleModule(
        argument_spec=argument_spec,
        required_one_of=required_one_of,
        mutually_exclusive=mutually_exclusive,
        supports_check_mode=True,
    )

    warnings = list()
    result = {"changed": False}

    want = map_params_to_obj(module)
    have = map_config_to_obj(want, module)

    commands = map_obj_to_commands((want, have), module, warnings)
    result["commands"] = commands

    if warnings:
        result["warnings"] = warnings
    if commands:
        if not module.check_mode:
            load_config(module, commands)
        result["changed"] = True

    module.exit_json(**result)


if __name__ == "__main__":
    main()