#!/usr/bin/python
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
#
from __future__ import absolute_import, division, print_function


__metaclass__ = type
DOCUMENTATION = """
module: ios_facts
author:
  - Peter Sprygada (@privateip)
  - Sumit Jaiswal (@justjais)
short_description: Module to collect facts from remote devices.
description:
  - Collects a base set of device facts from a remote device that is running IOS.  This
    module prepends all of the base network fact keys with C(ansible_net_<fact>).  The
    facts module will always collect a base set of facts from the device and can enable
    or disable collection of additional facts.
version_added: 1.0.0
extends_documentation_fragment:
  - cisco.ios.ios
notes:
  - Tested against Cisco IOSXE Version 17.3 on CML and IOS 15.6 for L2 specific resource.
  - Facts gathering for L3 devices are supposed to produce blank output for unsupported
    resources like vlan.
  - This module works with connection C(network_cli).
    See U(https://docs.ansible.com/ansible/latest/network/user_guide/platform_ios.html)
options:
  gather_subset:
    description:
      - When supplied, this argument restricts the facts collected to a given subset.
      - Possible values for this argument include C(all), C(min), C(default), C(hardware), C(config),
        and C(interfaces).
      - Specify a list of values to include a larger subset.
      - Use a value with an initial C(!) to collect all facts except that subset.
    required: false
    default: "min"
    type: list
    elements: str
  gather_network_resources:
    description:
      - When supplied, this argument will restrict the facts collected to a given subset.
        Possible values for this argument include all and the resources like interfaces,
        vlans etc. Can specify a list of values to include a larger subset. Values can
        also be used with an initial C(!) to specify that a specific subset should
        not be collected. Valid subsets are 'bgp_global', 'l3_interfaces', 'lag_interfaces',
        'ntp_global', 'acls', 'hostname', 'interfaces', 'lldp_interfaces', 'logging_global',
        'ospf_interfaces', 'ospfv2', 'prefix_lists', 'static_routes', 'acl_interfaces',
        'all', 'bgp_address_family', 'l2_interfaces', 'lacp', 'lacp_interfaces', 'lldp_global',
        'ospfv3', 'snmp_server', 'vlans', 'service'.
    type: list
    elements: str
  available_network_resources:
    description: When 'True' a list of network resources for which resource modules are available will be provided.
    type: bool
    default: false
"""

EXAMPLES = """
- name: Gather all legacy facts
  cisco.ios.ios_facts:
    gather_subset: all

- name: Gather only the config and default facts
  cisco.ios.ios_facts:
    gather_subset:
      - config

- name: Do not gather hardware facts
  cisco.ios.ios_facts:
    gather_subset:
      - "!hardware"

- name: Gather legacy and resource facts
  cisco.ios.ios_facts:
    gather_subset: all
    gather_network_resources: all

- name: Gather only the interfaces resource facts and no legacy facts
  cisco.ios.ios_facts:
    gather_subset:
      - "!all"
      - "!min"
    gather_network_resources:
      - interfaces

- name: Gather interfaces resource and minimal legacy facts
  cisco.ios.ios_facts:
    gather_subset: min
    gather_network_resources: interfaces

- name: Gather L2 interfaces resource and minimal legacy facts
  cisco.ios.ios_facts:
    gather_subset: min
    gather_network_resources: l2_interfaces

- name: Gather L3 interfaces resource and minimal legacy facts
  cisco.ios.ios_facts:
    gather_subset: min
    gather_network_resources: l3_interfaces
"""

RETURN = """
ansible_net_gather_subset:
  description: The list of fact subsets collected from the device
  returned: always
  type: list

ansible_net_gather_network_resources:
  description: The list of fact for network resource subsets collected from the device
  returned: when the resource is configured
  type: list

# default
ansible_net_model:
  description: The model name returned from the device
  returned: always
  type: str
ansible_net_serialnum:
  description: The serial number of the remote device
  returned: always
  type: str
ansible_net_version:
  description: The operating system version running on the remote device
  returned: always
  type: str
ansible_net_iostype:
  description: The operating system type (IOS or IOS-XE) running on the remote device
  returned: always
  type: str
ansible_net_hostname:
  description: The configured hostname of the device
  returned: always
  type: str
ansible_net_image:
  description: The image file the device is running
  returned: always
  type: str
ansible_net_stacked_models:
  description: The model names of each device in the stack
  returned: when multiple devices are configured in a stack
  type: list
ansible_net_stacked_serialnums:
  description: The serial numbers of each device in the stack
  returned: when multiple devices are configured in a stack
  type: list
ansible_net_api:
  description: The name of the transport
  returned: always
  type: str
ansible_net_python_version:
  description: The Python version Ansible controller is using
  returned: always
  type: str

# hardware
ansible_net_filesystems:
  description: All file system names available on the device
  returned: when hardware is configured
  type: list
ansible_net_filesystems_info:
  description: A hash of all file systems containing info about each file system (e.g. free and total space)
  returned: when hardware is configured
  type: dict
ansible_net_memfree_mb:
  description: The available free memory on the remote device in Mb
  returned: when hardware is configured
  type: int
ansible_net_memtotal_mb:
  description: The total memory on the remote device in Mb
  returned: when hardware is configured
  type: int

# config
ansible_net_config:
  description: The current active config from the device
  returned: when config is configured
  type: str

# interfaces
ansible_net_all_ipv4_addresses:
  description: All IPv4 addresses configured on the device
  returned: when interfaces is configured
  type: list
ansible_net_all_ipv6_addresses:
  description: All IPv6 addresses configured on the device
  returned: when interfaces is configured
  type: list
ansible_net_interfaces:
  description: A hash of all interfaces running on the system
  returned: when interfaces is configured
  type: dict
ansible_net_neighbors:
  description:
    - The list of CDP and LLDP neighbors from the remote device. If both,
      CDP and LLDP neighbor data is present on one port, CDP is preferred.
  returned: when interfaces is configured
  type: dict
"""
from ansible.module_utils.basic import AnsibleModule

from ansible_collections.cisco.ios.plugins.module_utils.network.ios.argspec.facts.facts import (
    FactsArgs,
)
from ansible_collections.cisco.ios.plugins.module_utils.network.ios.facts.facts import (
    FACT_RESOURCE_SUBSETS,
    Facts,
)


def main():
    """
    Main entry point for module execution

    :returns: ansible_facts
    """
    argument_spec = FactsArgs.argument_spec
    module = AnsibleModule(argument_spec=argument_spec, supports_check_mode=True)
    warnings = []

    ansible_facts = {}
    if module.params.get("available_network_resources"):
        ansible_facts["available_network_resources"] = sorted(FACT_RESOURCE_SUBSETS.keys())
    result = Facts(module).get_facts()
    additional_facts, additional_warnings = result
    ansible_facts.update(additional_facts)
    warnings.extend(additional_warnings)
    module.exit_json(ansible_facts=ansible_facts, warnings=warnings)


if __name__ == "__main__":
    main()