#!/usr/bin/python

# -*- coding: utf-8 -*-

# Authors:

#   Thomas Woerner <twoerner@redhat.com>

#

# Copyright (C) 2019 Red Hat

# see file 'COPYING' for use and warranty information

#

# 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 <http://www.gnu.org/licenses/>.

ANSIBLE_METADATA = {

    "metadata_version": "1.0",

    "supported_by": "community",

    "status": ["preview"],

}

DOCUMENTATION = """

---

module: ipahbacsvcgroup

short description: Manage FreeIPA hbacsvcgroups

description: Manage FreeIPA hbacsvcgroups

options:

  ipaadmin_principal:

    description: The admin principal

    default: admin

  ipaadmin_password:

    description: The admin password

    required: false

  name:

    description: The hbacsvcgroup name

    required: false

    aliases: ["cn"]

  description:

    description: The hbacsvcgroup description

    required: false

  hbacsvc:

    description: List of hbacsvc names assigned to this hbacsvcgroup.

    required: false

    type: list

  nomembers:

    description: Suppress processing of membership attributes

    required: false

    type: bool

  action:

    description: Work on hbacsvcgroup or member level

    default: hbacsvcgroup

    choices: ["member", "hbacsvcgroup"]

  state:

    description: State to ensure

    default: present

    choices: ["present", "absent"]

author:

    - Thomas Woerner

"""

EXAMPLES = """

# Ensure hbacsvcgroup login is present

- ipahbacsvcgroup:

    ipaadmin_password: MyPassword123

    name: login

    hbacsvc:

    - sshd

# Ensure hbacsvc sshd is present in existing login hbacsvcgroup

- ipahbacsvcgroup:

    ipaadmin_password: MyPassword123

    name: databases

    hbacsvc:

    - sshd

    action: member

# Ensure hbacsvc sshd is abdsent in existing login hbacsvcgroup

- ipahbacsvcgroup:

    ipaadmin_password: MyPassword123

    name: databases

    hbacsvc:

    - sshd

    action: member

    state: absent

# Ensure hbacsvcgroup login is absent

- ipahbacsvcgroup:

    ipaadmin_password: MyPassword123

    name: login

    state: absent

"""

RETURN = """

"""

from ansible.module_utils.basic import AnsibleModule

from ansible.module_utils._text import to_text

from ansible.module_utils.ansible_freeipa_module import temp_kinit, \

    temp_kdestroy, valid_creds, api_connect, api_command, compare_args_ipa

def find_hbacsvcgroup(module, name):

    _args = {

        "all": True,

        "cn": to_text(name),

    }

    _result = api_command(module, "hbacsvcgroup_find", to_text(name), _args)

    if len(_result["result"]) > 1:

        module.fail_json(

            msg="There is more than one hbacsvcgroup '%s'" % (name))

    elif len(_result["result"]) == 1:

        return _result["result"][0]

    else:

        return None

def gen_args(description, nomembers):

    _args = {}

    if description is not None:

        _args["description"] = to_text(description)

    if nomembers is not None:

        _args["nomembers"] = nomembers

    return _args

def gen_member_args(hbacsvc):

    _args = {}

    if hbacsvc is not None:

        _args["member_hbacsvc"] = [to_text(svc) for svc in hbacsvc]

    return _args

def main():

    ansible_module = AnsibleModule(

        argument_spec=dict(

            # general

            ipaadmin_principal=dict(type="str", default="admin"),

            ipaadmin_password=dict(type="str", required=False, no_log=True),

            name=dict(type="list", aliases=["cn"], default=None,

                      required=True),

            # present

            description=dict(type="str", default=None),

            nomembers=dict(required=False, type='bool', default=None),

            hbacsvc=dict(required=False, type='list', default=None),

            action=dict(type="str", default="hbacsvcgroup",

                        choices=["member", "hbacsvcgroup"]),

            # state

            state=dict(type="str", default="present",

                       choices=["present", "absent"]),

        ),

        supports_check_mode=True,

    )

    ansible_module._ansible_debug = True

    # Get parameters

    # general

    ipaadmin_principal = ansible_module.params.get("ipaadmin_principal")

    ipaadmin_password = ansible_module.params.get("ipaadmin_password")

    names = ansible_module.params.get("name")

    # present

    description = ansible_module.params.get("description")

    nomembers = ansible_module.params.get("nomembers")

    hbacsvc = ansible_module.params.get("hbacsvc")

    action = ansible_module.params.get("action")

    # state

    state = ansible_module.params.get("state")

    # Check parameters

    if state == "present":

        if len(names) != 1:

            ansible_module.fail_json(

                msg="Only one hbacsvcgroup can be added at a time.")

        if action == "member":

            invalid = ["description", "nomembers"]

            for x in invalid:

                if vars()[x] is not None:

                    ansible_module.fail_json(

                        msg="Argument '%s' can not be used with action "

                        "'%s'" % (x, action))

    if state == "absent":

        if len(names) < 1:

            ansible_module.fail_json(

                msg="No name given.")

        invalid = ["description", "nomembers"]

        if action == "hbacsvcgroup":

            invalid.extend(["hbacsvc"])

        for x in invalid:

            if vars()[x] is not None:

                ansible_module.fail_json(

                    msg="Argument '%s' can not be used with state '%s'" %

                    (x, state))

    # Init

    changed = False

    exit_args = {}

    ccache_dir = None

    ccache_name = None

    try:

        if not valid_creds(ansible_module, ipaadmin_principal):

            ccache_dir, ccache_name = temp_kinit(ipaadmin_principal,

                                                 ipaadmin_password)

        api_connect()

        commands = []

        for name in names:

            # Make sure hbacsvcgroup exists

            res_find = find_hbacsvcgroup(ansible_module, name)

            # Create command

            if state == "present":

                # Generate args

                args = gen_args(description, nomembers)

                if action == "hbacsvcgroup":

                    # Found the hbacsvcgroup

                    if res_find is not None:

                        # For all settings is args, check if there are

                        # different settings in the find result.

                        # If yes: modify

                        if not compare_args_ipa(ansible_module, args,

                                                res_find):

                            commands.append([name, "hbacsvcgroup_mod", args])

                    else:

                        commands.append([name, "hbacsvcgroup_add", args])

                        # Set res_find to empty dict for next step

                        res_find = {}

                    member_args = gen_member_args(hbacsvc)

                    if not compare_args_ipa(ansible_module, member_args,

                                            res_find):

                        # Generate addition and removal lists

                        hbacsvc_add = list(

                            set(hbacsvc or []) -

                            set(res_find.get("member_hbacsvc", [])))

                        hbacsvc_del = list(

                            set(res_find.get("member_hbacsvc", [])) -

                            set(hbacsvc or []))

                        # Add members

                        if len(hbacsvc_add) > 0:

                            commands.append([name, "hbacsvcgroup_add_member",

                                             {

                                                 "hbacsvc":

                                                 [to_text(svc)

                                                  for svc in hbacsvc_add],

                                             }])

                        # Remove members

                        if len(hbacsvc_del) > 0:

                            commands.append([name,

                                             "hbacsvcgroup_remove_member",

                                             {

                                                 "hbacsvc":

                                                 [to_text(svc)

                                                  for svc in hbacsvc_del],

                                             }])

                elif action == "member":

                    if res_find is None:

                        ansible_module.fail_json(

                            msg="No hbacsvcgroup '%s'" % name)

                    # Ensure members are present

                    commands.append([name, "hbacsvcgroup_add_member",

                                     {

                                         "hbacsvc": [to_text(svc)

                                                     for svc in hbacsvc],

                                     }])

            elif state == "absent":

                if action == "hbacsvcgroup":

                    if res_find is not None:

                        commands.append([name, "hbacsvcgroup_del", {}])

                elif action == "member":

                    if res_find is None:

                        ansible_module.fail_json(

                            msg="No hbacsvcgroup '%s'" % name)

                    # Ensure members are absent

                    commands.append([name, "hbacsvcgroup_remove_member",

                                     {

                                         "hbacsvc": [to_text(svc)

                                                     for svc in hbacsvc],

                                     }])

            else:

                ansible_module.fail_json(msg="Unkown state '%s'" % state)

        # Execute commands

        errors = []

        for name, command, args in commands:

            try:

                result = api_command(ansible_module, command, to_text(name),

                                     args)

                if "completed" in result:

                    if result["completed"] > 0:

                        changed = True

                else:

                    changed = True

            except Exception as e:

                ansible_module.fail_json(msg="%s: %s: %s" % (command, name,

                                                             str(e)))

            # Get all errors

            # All "already a member" and "not a member" failures in the

            # result are ignored. All others are reported.

            if "failed" in result and "member" in result["failed"]:

                failed = result["failed"]["member"]

                for member_type in failed:

                    for member, failure in failed[member_type]:

                        if "already a member" not in failure \

                           and "not a member" not in failure:

                            errors.append("%s: %s %s: %s" % (

                                command, member_type, member, failure))

        if len(errors) > 0:

            ansible_module.fail_json(msg=", ".join(errors))

    except Exception as e:

        ansible_module.fail_json(msg=str(e))

    finally:

        temp_kdestroy(ccache_dir, ccache_name)

    # Done

    ansible_module.exit_json(changed=changed, **exit_args)

if __name__ == "__main__":

    main()