#!/usr/bin/python
from __future__ import (absolute_import, division, print_function)
# Copyright: (c) 2022 Fortinet
# GNU General Public License v3.0+ (see LICENSE or https://www.gnu.org/licenses/gpl-3.0.txt)
#
# This program 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.

__metaclass__ = type

ANSIBLE_METADATA = {'status': ['preview'],
                    'supported_by': 'community',
                    'metadata_version': '1.1'}

DOCUMENTATION = '''
---
module: fortios_wanopt_settings
short_description: Configure WAN optimization settings in Fortinet's FortiOS and FortiGate.
description:
    - This module is able to configure a FortiGate or FortiOS (FOS) device by allowing the
      user to set and modify wanopt feature and settings category.
      Examples include all parameters and values need to be adjusted to datasources before usage.
      Tested with FOS v6.0.0
version_added: "2.0.0"
author:
    - Link Zheng (@chillancezen)
    - Jie Xue (@JieX19)
    - Hongbin Lu (@fgtdev-hblu)
    - Frank Shen (@frankshen01)
    - Miguel Angel Munoz (@mamunozgonzalez)
    - Nicolas Thomas (@thomnico)
notes:
    - Legacy fortiosapi has been deprecated, httpapi is the preferred way to run playbooks

requirements:
    - ansible>=2.9.0
options:
    access_token:
        description:
            - Token-based authentication.
              Generated from GUI of Fortigate.
        type: str
        required: false
    enable_log:
        description:
            - Enable/Disable logging for task.
        type: bool
        required: false
        default: false
    vdom:
        description:
            - Virtual domain, among those defined previously. A vdom is a
              virtual instance of the FortiGate that can be configured and
              used as a different unit.
        type: str
        default: root
    member_path:
        type: str
        description:
            - Member attribute path to operate on.
            - Delimited by a slash character if there are more than one attribute.
            - Parameter marked with member_path is legitimate for doing member operation.
    member_state:
        type: str
        description:
            - Add or delete a member under specified attribute path.
            - When member_state is specified, the state option is ignored.
        choices:
            - present
            - absent

    wanopt_settings:
        description:
            - Configure WAN optimization settings.
        default: null
        type: dict
        suboptions:
            auto_detect_algorithm:
                description:
                    - Auto detection algorithms used in tunnel negotiations.
                type: str
                choices:
                    - simple
                    - diff-req-resp
            host_id:
                description:
                    - Local host ID (must also be entered in the remote FortiGate"s peer list).
                type: str
            tunnel_ssl_algorithm:
                description:
                    - Relative strength of encryption algorithms accepted during tunnel negotiation.
                type: str
                choices:
                    - high
                    - medium
                    - low
'''

EXAMPLES = '''
- hosts: fortigates
  collections:
    - fortinet.fortios
  connection: httpapi
  vars:
   vdom: "root"
   ansible_httpapi_use_ssl: yes
   ansible_httpapi_validate_certs: no
   ansible_httpapi_port: 443
  tasks:
  - name: Configure WAN optimization settings.
    fortios_wanopt_settings:
      vdom:  "{{ vdom }}"
      wanopt_settings:
        auto_detect_algorithm: "simple"
        host_id: "myhostname"
        tunnel_ssl_algorithm: "high"

'''

RETURN = '''
build:
  description: Build number of the fortigate image
  returned: always
  type: str
  sample: '1547'
http_method:
  description: Last method used to provision the content into FortiGate
  returned: always
  type: str
  sample: 'PUT'
http_status:
  description: Last result given by FortiGate on last operation applied
  returned: always
  type: str
  sample: "200"
mkey:
  description: Master key (id) used in the last call to FortiGate
  returned: success
  type: str
  sample: "id"
name:
  description: Name of the table used to fulfill the request
  returned: always
  type: str
  sample: "urlfilter"
path:
  description: Path of the table used to fulfill the request
  returned: always
  type: str
  sample: "webfilter"
revision:
  description: Internal revision number
  returned: always
  type: str
  sample: "17.0.2.10658"
serial:
  description: Serial number of the unit
  returned: always
  type: str
  sample: "FGVMEVYYQT3AB5352"
status:
  description: Indication of the operation's result
  returned: always
  type: str
  sample: "success"
vdom:
  description: Virtual domain used
  returned: always
  type: str
  sample: "root"
version:
  description: Version of the FortiGate
  returned: always
  type: str
  sample: "v5.6.3"

'''
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.connection import Connection
from ansible_collections.fortinet.fortios.plugins.module_utils.fortios.fortios import FortiOSHandler
from ansible_collections.fortinet.fortios.plugins.module_utils.fortios.fortios import check_legacy_fortiosapi
from ansible_collections.fortinet.fortios.plugins.module_utils.fortios.fortios import schema_to_module_spec
from ansible_collections.fortinet.fortios.plugins.module_utils.fortios.fortios import check_schema_versioning
from ansible_collections.fortinet.fortios.plugins.module_utils.fortimanager.common import FAIL_SOCKET_MSG


def filter_wanopt_settings_data(json):
    option_list = ['auto_detect_algorithm', 'host_id', 'tunnel_ssl_algorithm']
    dictionary = {}

    for attribute in option_list:
        if attribute in json and json[attribute] is not None:
            dictionary[attribute] = json[attribute]

    return dictionary


def underscore_to_hyphen(data):
    if isinstance(data, list):
        for i, elem in enumerate(data):
            data[i] = underscore_to_hyphen(elem)
    elif isinstance(data, dict):
        new_data = {}
        for k, v in data.items():
            new_data[k.replace('_', '-')] = underscore_to_hyphen(v)
        data = new_data

    return data


def wanopt_settings(data, fos):
    vdom = data['vdom']
    wanopt_settings_data = data['wanopt_settings']
    filtered_data = underscore_to_hyphen(filter_wanopt_settings_data(wanopt_settings_data))

    return fos.set('wanopt',
                   'settings',
                   data=filtered_data,
                   vdom=vdom)


def is_successful_status(resp):
    return 'status' in resp and resp['status'] == 'success' or \
        'http_status' in resp and resp['http_status'] == 200 or \
        'http_method' in resp and resp['http_method'] == "DELETE" and resp['http_status'] == 404


def fortios_wanopt(data, fos):

    fos.do_member_operation('wanopt', 'settings')
    if data['wanopt_settings']:
        resp = wanopt_settings(data, fos)
    else:
        fos._module.fail_json(msg='missing task body: %s' % ('wanopt_settings'))

    return not is_successful_status(resp), \
        is_successful_status(resp) and \
        (resp['revision_changed'] if 'revision_changed' in resp else True), \
        resp


versioned_schema = {
    "type": "dict",
    "children": {
        "host_id": {
            "type": "string",
            "revisions": {
                "v7.0.3": True,
                "v7.0.2": True,
                "v7.0.1": True,
                "v7.0.0": True,
                "v7.0.5": True,
                "v7.0.4": True,
                "v6.4.4": True,
                "v6.0.5": True,
                "v6.0.0": True,
                "v6.4.0": True,
                "v6.4.1": True,
                "v6.2.0": True,
                "v6.2.3": True,
                "v6.2.5": True,
                "v6.2.7": True,
                "v6.0.11": True
            }
        },
        "auto_detect_algorithm": {
            "type": "string",
            "options": [
                {
                    "value": "simple",
                    "revisions": {
                        "v7.0.3": True,
                        "v7.0.2": True,
                        "v7.0.1": True,
                        "v7.0.0": True,
                        "v7.0.5": True,
                        "v7.0.4": True,
                        "v6.4.4": True,
                        "v6.0.5": True,
                        "v6.0.0": True,
                        "v6.4.0": True,
                        "v6.4.1": True,
                        "v6.2.0": True,
                        "v6.2.3": True,
                        "v6.2.5": True,
                        "v6.2.7": True,
                        "v6.0.11": True
                    }
                },
                {
                    "value": "diff-req-resp",
                    "revisions": {
                        "v7.0.3": True,
                        "v7.0.2": True,
                        "v7.0.1": True,
                        "v7.0.0": True,
                        "v7.0.5": True,
                        "v7.0.4": True,
                        "v6.4.4": True,
                        "v6.0.5": True,
                        "v6.0.0": True,
                        "v6.4.0": True,
                        "v6.4.1": True,
                        "v6.2.0": True,
                        "v6.2.3": True,
                        "v6.2.5": True,
                        "v6.2.7": True,
                        "v6.0.11": True
                    }
                }
            ],
            "revisions": {
                "v7.0.3": True,
                "v7.0.2": True,
                "v7.0.1": True,
                "v7.0.0": True,
                "v7.0.5": True,
                "v7.0.4": True,
                "v6.4.4": True,
                "v6.0.5": True,
                "v6.0.0": True,
                "v6.4.0": True,
                "v6.4.1": True,
                "v6.2.0": True,
                "v6.2.3": True,
                "v6.2.5": True,
                "v6.2.7": True,
                "v6.0.11": True
            }
        },
        "tunnel_ssl_algorithm": {
            "type": "string",
            "options": [
                {
                    "value": "high",
                    "revisions": {
                        "v7.0.3": True,
                        "v7.0.2": True,
                        "v7.0.1": True,
                        "v7.0.0": True,
                        "v7.0.5": True,
                        "v7.0.4": True,
                        "v6.4.4": True,
                        "v6.0.5": True,
                        "v6.0.0": True,
                        "v6.4.0": True,
                        "v6.4.1": True,
                        "v6.2.0": True,
                        "v6.2.3": True,
                        "v6.2.5": True,
                        "v6.2.7": True,
                        "v6.0.11": True
                    }
                },
                {
                    "value": "medium",
                    "revisions": {
                        "v7.0.3": True,
                        "v7.0.2": True,
                        "v7.0.1": True,
                        "v7.0.0": True,
                        "v7.0.5": True,
                        "v7.0.4": True,
                        "v6.4.4": True,
                        "v6.0.5": True,
                        "v6.0.0": True,
                        "v6.4.0": True,
                        "v6.4.1": True,
                        "v6.2.0": True,
                        "v6.2.3": True,
                        "v6.2.5": True,
                        "v6.2.7": True,
                        "v6.0.11": True
                    }
                },
                {
                    "value": "low",
                    "revisions": {
                        "v7.0.3": True,
                        "v7.0.2": True,
                        "v7.0.1": True,
                        "v7.0.0": True,
                        "v7.0.5": True,
                        "v7.0.4": True,
                        "v6.4.4": True,
                        "v6.0.5": True,
                        "v6.0.0": True,
                        "v6.4.0": True,
                        "v6.4.1": True,
                        "v6.2.0": True,
                        "v6.2.3": True,
                        "v6.2.5": True,
                        "v6.2.7": True,
                        "v6.0.11": True
                    }
                }
            ],
            "revisions": {
                "v7.0.3": True,
                "v7.0.2": True,
                "v7.0.1": True,
                "v7.0.0": True,
                "v7.0.5": True,
                "v7.0.4": True,
                "v6.4.4": True,
                "v6.0.5": True,
                "v6.0.0": True,
                "v6.4.0": True,
                "v6.4.1": True,
                "v6.2.0": True,
                "v6.2.3": True,
                "v6.2.5": True,
                "v6.2.7": True,
                "v6.0.11": True
            }
        }
    },
    "revisions": {
        "v7.0.3": True,
        "v7.0.2": True,
        "v7.0.1": True,
        "v7.0.0": True,
        "v7.0.5": True,
        "v7.0.4": True,
        "v6.4.4": True,
        "v6.0.5": True,
        "v6.0.0": True,
        "v6.4.0": True,
        "v6.4.1": True,
        "v6.2.0": True,
        "v6.2.3": True,
        "v6.2.5": True,
        "v6.2.7": True,
        "v6.0.11": True
    }
}


def main():
    module_spec = schema_to_module_spec(versioned_schema)
    mkeyname = None
    fields = {
        "access_token": {"required": False, "type": "str", "no_log": True},
        "enable_log": {"required": False, "type": 'bool', "default": False},
        "vdom": {"required": False, "type": "str", "default": "root"},
        "member_path": {"required": False, "type": "str"},
        "member_state": {
            "type": "str",
            "required": False,
            "choices": ["present", "absent"]
        },
        "wanopt_settings": {
            "required": False, "type": "dict", "default": None,
            "options": {
            }
        }
    }
    for attribute_name in module_spec['options']:
        fields["wanopt_settings"]['options'][attribute_name] = module_spec['options'][attribute_name]
        if mkeyname and mkeyname == attribute_name:
            fields["wanopt_settings"]['options'][attribute_name]['required'] = True

    module = AnsibleModule(argument_spec=fields,
                           supports_check_mode=False)
    check_legacy_fortiosapi(module)

    versions_check_result = None
    if module._socket_path:
        connection = Connection(module._socket_path)
        if 'access_token' in module.params:
            connection.set_option('access_token', module.params['access_token'])

        if 'enable_log' in module.params:
            connection.set_option('enable_log', module.params['enable_log'])
        else:
            connection.set_option('enable_log', False)
        fos = FortiOSHandler(connection, module, mkeyname)
        versions_check_result = check_schema_versioning(fos, versioned_schema, "wanopt_settings")

        is_error, has_changed, result = fortios_wanopt(module.params, fos)

    else:
        module.fail_json(**FAIL_SOCKET_MSG)

    if versions_check_result and versions_check_result['matched'] is False:
        module.warn("Ansible has detected version mismatch between FortOS system and your playbook, see more details by specifying option -vvv")

    if not is_error:
        if versions_check_result and versions_check_result['matched'] is False:
            module.exit_json(changed=has_changed, version_check_warning=versions_check_result, meta=result)
        else:
            module.exit_json(changed=has_changed, meta=result)
    else:
        if versions_check_result and versions_check_result['matched'] is False:
            module.fail_json(msg="Error in repo", version_check_warning=versions_check_result, meta=result)
        else:
            module.fail_json(msg="Error in repo", meta=result)


if __name__ == '__main__':
    main()