#!/usr/bin/python
# -*- coding: utf-8 -*-

# 2018, Simon Dodsley (simon@purestorage.com)
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)

from __future__ import absolute_import, division, print_function

__metaclass__ = type

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

DOCUMENTATION = r"""
---
module: purefa_smtp
version_added: '1.0.0'
author:
  - Pure Storage ansible Team (@sdodsley) <pure-ansible-team@purestorage.com>
short_description: Configure FlashArray SMTP settings
description:
- Set or erase configuration for the SMTP settings.
- If username/password are set this will always force a change as there is
  no way to see if the password is differnet from the current SMTP configuration.
- Pure Storage Ansible Team (@sdodsley) <pure-ansible-team@purestorage.com>
options:
  state:
    description:
    - Set or delete SMTP configuration
    default: present
    type: str
    choices: [ absent, present ]
  password:
    description:
    - The SMTP password.
    type: str
  user:
    description:
    - The SMTP username.
    type: str
  relay_host:
    description:
    - IPv4 or IPv6 address or FQDN. A port number may be appended.
    type: str
  sender_domain:
    description:
    - Domain name.
    type: str
extends_documentation_fragment:
- purestorage.flasharray.purestorage.fa
"""

EXAMPLES = r"""
- name: Delete exisitng SMTP settings
  purestorage.flasharray.purefa_smtp:
    state: absent
    fa_url: 10.10.10.2
    api_token: e31060a7-21fc-e277-6240-25983c6c4592
- name: Set SMTP settings
  purestorage.flasharray.purefa_smtp:
    sender_domain: purestorage.com
    password: account_password
    user: smtp_account
    relay_host: 10.2.56.78:2345
    fa_url: 10.10.10.2
    api_token: e31060a7-21fc-e277-6240-25983c6c4592
"""

RETURN = r"""
"""

from ansible.module_utils.basic import AnsibleModule
from ansible_collections.purestorage.flasharray.plugins.module_utils.purefa import (
    get_system,
    purefa_argument_spec,
)


def delete_smtp(module, array):
    """Delete SMTP settings"""
    changed = True
    if not module.check_mode:
        try:
            array.set_smtp(sender_domain="", user_name="", password="", relay_host="")
        except Exception:
            module.fail_json(msg="Delete SMTP settigs failed")
    module.exit_json(changed=changed)


def create_smtp(module, array):
    """Set SMTP settings"""
    changed = changed_sender = changed_relay = changed_creds = False
    current_smtp = array.get_smtp()
    if (
        module.params["sender_domain"]
        and current_smtp["sender_domain"] != module.params["sender_domain"]
    ):
        changed_sender = True
        if not module.check_mode:
            try:
                array.set_smtp(sender_domain=module.params["sender_domain"])
            except Exception:
                module.fail_json(msg="Set SMTP sender domain failed.")
    if (
        module.params["relay_host"]
        and current_smtp["relay_host"] != module.params["relay_host"]
    ):
        changed_relay = True
        if not module.check_mode:
            try:
                array.set_smtp(relay_host=module.params["relay_host"])
            except Exception:
                module.fail_json(msg="Set SMTP relay host failed.")
    if module.params["user"]:
        changed_creds = True
        if not module.check_mode:
            try:
                array.set_smtp(
                    user_name=module.params["user"], password=module.params["password"]
                )
            except Exception:
                module.fail_json(msg="Set SMTP username/password failed.")
    changed = bool(changed_sender or changed_relay or changed_creds)

    module.exit_json(changed=changed)


def main():
    argument_spec = purefa_argument_spec()
    argument_spec.update(
        dict(
            state=dict(type="str", default="present", choices=["absent", "present"]),
            sender_domain=dict(type="str"),
            password=dict(type="str", no_log=True),
            user=dict(type="str"),
            relay_host=dict(type="str"),
        )
    )

    required_together = [["user", "password"]]

    module = AnsibleModule(
        argument_spec, required_together=required_together, supports_check_mode=True
    )

    state = module.params["state"]
    array = get_system(module)

    if state == "absent":
        delete_smtp(module, array)
    elif state == "present":
        create_smtp(module, array)
    else:
        module.exit_json(changed=False)


if __name__ == "__main__":
    main()