#!/usr/bin/python
from __future__ import (absolute_import, division, print_function)
# Copyright 2019-2020 Fortinet, Inc.
#
# 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.
#
# This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.

__metaclass__ = type

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

DOCUMENTATION = '''
---
module: fortios_system_dns_database
short_description: Configure DNS databases 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 system feature and dns_database category.
      Examples include all parameters and values need to be adjusted to datasources before usage.
      Tested with FOS v6.0.0
version_added: "2.9"
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
    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

    state:
        description:
            - Indicates whether to create or remove the object.
        type: str
        required: true
        choices:
            - present
            - absent
    system_dns_database:
        description:
            - Configure DNS databases.
        default: null
        type: dict
        suboptions:
            allow_transfer:
                description:
                    - DNS zone transfer IP address list.
                type: str
            authoritative:
                description:
                    - Enable/disable authoritative zone.
                type: str
                choices:
                    - enable
                    - disable
            contact:
                description:
                    - Email address of the administrator for this zone.  You can specify only the username (e.g. admin) or full email address (e.g. admin@test
                      .com)   When using a simple username, the domain of the email will be this zone.
                type: str
            dns_entry:
                description:
                    - DNS entry.
                type: list
                suboptions:
                    canonical_name:
                        description:
                            - Canonical name of the host.
                        type: str
                    hostname:
                        description:
                            - Name of the host.
                        type: str
                    id:
                        description:
                            - DNS entry ID.
                        required: true
                        type: int
                    ip:
                        description:
                            - IPv4 address of the host.
                        type: str
                    ipv6:
                        description:
                            - IPv6 address of the host.
                        type: str
                    preference:
                        description:
                            - DNS entry preference, 0 is the highest preference (0 - 65535)
                        type: int
                    status:
                        description:
                            - Enable/disable resource record status.
                        type: str
                        choices:
                            - enable
                            - disable
                    ttl:
                        description:
                            - Time-to-live for this entry (0 to 2147483647 sec).
                        type: int
                    type:
                        description:
                            - Resource record type.
                        type: str
                        choices:
                            - A
                            - NS
                            - CNAME
                            - MX
                            - AAAA
                            - PTR
                            - PTR_V6
            domain:
                description:
                    - Domain name.
                type: str
            forwarder:
                description:
                    - DNS zone forwarder IP address list.
                type: str
            ip_master:
                description:
                    - IP address of master DNS server. Entries in this master DNS server and imported into the DNS zone.
                type: str
            name:
                description:
                    - Zone name.
                required: true
                type: str
            primary_name:
                description:
                    - Domain name of the default DNS server for this zone.
                type: str
            source_ip:
                description:
                    - Source IP for forwarding to DNS server.
                type: str
            status:
                description:
                    - Enable/disable this DNS zone.
                type: str
                choices:
                    - enable
                    - disable
            ttl:
                description:
                    - Default time-to-live value for the entries of this DNS zone (0 - 2147483647 sec).
                type: int
            type:
                description:
                    - Zone type (master to manage entries directly, slave to import entries from other zones).
                type: str
                choices:
                    - master
                    - slave
            view:
                description:
                    - Zone view (public to serve public clients, shadow to serve internal clients).
                type: str
                choices:
                    - shadow
                    - public
'''

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 DNS databases.
    fortios_system_dns_database:
      vdom:  "{{ vdom }}"
      state: "present"
      access_token: "<your_own_value>"
      system_dns_database:
        allow_transfer: "<your_own_value>"
        authoritative: "enable"
        contact: "<your_own_value>"
        dns_entry:
         -
            canonical_name: "<your_own_value>"
            hostname: "myhostname"
            id:  "9"
            ip: "<your_own_value>"
            ipv6: "<your_own_value>"
            preference: "12"
            status: "enable"
            ttl: "14"
            type: "A"
        domain: "<your_own_value>"
        forwarder: "<your_own_value>"
        ip_master: "<your_own_value>"
        name: "default_name_19"
        primary_name: "<your_own_value>"
        source_ip: "84.230.14.43"
        status: "enable"
        ttl: "23"
        type: "master"
        view: "shadow"

'''

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.fortimanager.common import FAIL_SOCKET_MSG


def filter_system_dns_database_data(json):
    option_list = ['allow_transfer', 'authoritative', 'contact',
                   'dns_entry', 'domain', 'forwarder',
                   'ip_master', 'name', 'primary_name',
                   'source_ip', 'status', 'ttl',
                   'type', 'view']
    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 system_dns_database(data, fos):
    vdom = data['vdom']
    state = data['state']
    system_dns_database_data = data['system_dns_database']
    filtered_data = underscore_to_hyphen(filter_system_dns_database_data(system_dns_database_data))

    if state == "present":
        return fos.set('system',
                       'dns-database',
                       data=filtered_data,
                       vdom=vdom)

    elif state == "absent":
        return fos.delete('system',
                          'dns-database',
                          mkey=filtered_data['name'],
                          vdom=vdom)
    else:
        fos._module.fail_json(msg='state must be present or absent!')


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


def fortios_system(data, fos):

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

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


def main():
    mkeyname = 'name'
    fields = {
        "access_token": {"required": False, "type": "str", "no_log": True},
        "vdom": {"required": False, "type": "str", "default": "root"},
        "state": {"required": True, "type": "str",
                  "choices": ["present", "absent"]},
        "system_dns_database": {
            "required": False, "type": "dict", "default": None,
            "options": {
                "allow_transfer": {"required": False, "type": "str"},
                "authoritative": {"required": False, "type": "str",
                                  "choices": ["enable",
                                              "disable"]},
                "contact": {"required": False, "type": "str"},
                "dns_entry": {"required": False, "type": "list",
                              "options": {
                                  "canonical_name": {"required": False, "type": "str"},
                                  "hostname": {"required": False, "type": "str"},
                                  "id": {"required": True, "type": "int"},
                                  "ip": {"required": False, "type": "str"},
                                  "ipv6": {"required": False, "type": "str"},
                                  "preference": {"required": False, "type": "int"},
                                  "status": {"required": False, "type": "str",
                                             "choices": ["enable",
                                                         "disable"]},
                                  "ttl": {"required": False, "type": "int"},
                                  "type": {"required": False, "type": "str",
                                           "choices": ["A",
                                                       "NS",
                                                       "CNAME",
                                                       "MX",
                                                       "AAAA",
                                                       "PTR",
                                                       "PTR_V6"]}
                              }},
                "domain": {"required": False, "type": "str"},
                "forwarder": {"required": False, "type": "str"},
                "ip_master": {"required": False, "type": "str"},
                "name": {"required": True, "type": "str"},
                "primary_name": {"required": False, "type": "str"},
                "source_ip": {"required": False, "type": "str"},
                "status": {"required": False, "type": "str",
                           "choices": ["enable",
                                       "disable"]},
                "ttl": {"required": False, "type": "int"},
                "type": {"required": False, "type": "str",
                         "choices": ["master",
                                     "slave"]},
                "view": {"required": False, "type": "str",
                         "choices": ["shadow",
                                     "public"]}

            }
        }
    }

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

    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'])

        fos = FortiOSHandler(connection, module, mkeyname)

        is_error, has_changed, result = fortios_system(module.params, fos)
        versions_check_result = connection.get_system_version()
    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 galaxy, 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()
