#!/usr/bin/python

# Copyright (c) 2016, Adfinis SyGroup AG
# Tobias Rueetschi <tobias.ruetschi@adfinis-sygroup.ch>
# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
# SPDX-License-Identifier: GPL-3.0-or-later

from __future__ import annotations


DOCUMENTATION = r"""
module: udm_group
author:
  - Tobias Rüetschi (@keachi)
short_description: Manage of the posix group
description:
  - This module allows to manage user groups on a univention corporate server (UCS). It uses the Python API of the UCS to
    create a new object or edit it.
extends_documentation_fragment:
  - community.general.attributes
attributes:
  check_mode:
    support: full
  diff_mode:
    support: partial
options:
  state:
    default: "present"
    choices: [present, absent]
    description:
      - Whether the group is present or not.
    type: str
  name:
    required: true
    description:
      - Name of the POSIX group.
    type: str
  description:
    description:
      - Group description.
    type: str
  position:
    description:
      - Define the whole LDAP position of the group, for example V(cn=g123m-1A,cn=classes,cn=schueler,cn=groups,ou=schule,dc=example,dc=com).
    type: str
    default: ''
  ou:
    description:
      - LDAP OU, for example V(school) for LDAP OU V(ou=school,dc=example,dc=com).
    type: str
    default: ''
  subpath:
    description:
      - Subpath inside the OU, for example V(cn=classes,cn=students,cn=groups).
    type: str
    default: "cn=groups"
"""


EXAMPLES = r"""
- name: Create a POSIX group
  community.general.udm_group:
    name: g123m-1A

# Create a POSIX group with the exact DN
# C(cn=g123m-1A,cn=classes,cn=students,cn=groups,ou=school,dc=school,dc=example,dc=com)
- name: Create a POSIX group with a DN
  community.general.udm_group:
    name: g123m-1A
    subpath: 'cn=classes,cn=students,cn=groups'
    ou: school

# or
- name: Create a POSIX group with a DN
  community.general.udm_group:
    name: g123m-1A
    position: 'cn=classes,cn=students,cn=groups,ou=school,dc=school,dc=example,dc=com'
"""


RETURN = """#"""

from ansible.module_utils.basic import AnsibleModule
from ansible_collections.community.general.plugins.module_utils.univention_umc import (
    umc_module_for_add,
    umc_module_for_edit,
    ldap_search,
    base_dn,
)


def main():
    module = AnsibleModule(
        argument_spec=dict(
            name=dict(required=True, type="str"),
            description=dict(type="str"),
            position=dict(default="", type="str"),
            ou=dict(default="", type="str"),
            subpath=dict(default="cn=groups", type="str"),
            state=dict(default="present", choices=["present", "absent"], type="str"),
        ),
        supports_check_mode=True,
    )
    name = module.params["name"]
    description = module.params["description"]
    position = module.params["position"]
    ou = module.params["ou"]
    subpath = module.params["subpath"]
    state = module.params["state"]
    changed = False
    diff = None

    groups = list(ldap_search(f"(&(objectClass=posixGroup)(cn={name}))", attr=["cn"]))
    if position != "":
        container = position
    else:
        if ou != "":
            ou = f"ou={ou},"
        if subpath != "":
            subpath = f"{subpath},"
        container = f"{subpath}{ou}{base_dn()}"
    group_dn = f"cn={name},{container}"

    exists = bool(len(groups))

    if state == "present":
        try:
            if not exists:
                grp = umc_module_for_add("groups/group", container)
            else:
                grp = umc_module_for_edit("groups/group", group_dn)
            grp["name"] = name
            grp["description"] = description
            diff = grp.diff()
            changed = grp.diff() != []
            if not module.check_mode:
                if not exists:
                    grp.create()
                else:
                    grp.modify()
        except Exception:
            module.fail_json(msg=f"Creating/editing group {name} in {container} failed")

    if state == "absent" and exists:
        try:
            grp = umc_module_for_edit("groups/group", group_dn)
            if not module.check_mode:
                grp.remove()
            changed = True
        except Exception:
            module.fail_json(msg=f"Removing group {name} failed")

    module.exit_json(changed=changed, name=name, diff=diff, container=container)


if __name__ == "__main__":
    main()