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

# (c) 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: purefb_smtp
version_added: '1.0.0'
short_description: Configure SMTP for Pure Storage FlashBlade
description:
- Configure SMTP for a Pure Storage FlashBlade.
- Whilst there can be no relay host, a sender domain must be configured.
author:
- Pure Storage Ansible Team (@sdodsley) <pure-ansible-team@purestorage.com>
options:
  host:
    description:
    - Relay server name
    type: str
  domain:
    description:
    - Domain name for alert messages
    required: true
    type: str
extends_documentation_fragment:
- purestorage.flashblade.purestorage.fb
"""

EXAMPLES = r"""
- name: Configure SMTP settings
  purefb_smtp:
    host: hostname
    domain: xyz.com
    fb_url: 10.10.10.2
    api_token: T-9f276a18-50ab-446e-8a0c-666a3529a1b6
"""

RETURN = r"""
"""

HAS_PURITY_FB = True
try:
    from purity_fb import Smtp
except ImportError:
    HAS_PURITY_FB = False

from ansible.module_utils.basic import AnsibleModule
from ansible_collections.purestorage.flashblade.plugins.module_utils.purefb import (
    get_blade,
    purefb_argument_spec,
)


MIN_REQUIRED_API_VERSION = "1.6"


def set_smtp(module, blade):
    """Configure SMTP settings"""
    changed = False
    current_smtp = blade.smtp.list_smtp().items[0]
    if module.params["host"] and module.params["host"] != current_smtp.relay_host:
        smtp_settings = Smtp(relay_host=module.params["host"])
        changed = True
        if not module.check_mode:
            try:
                blade.smtp.update_smtp(smtp_settings=smtp_settings)
            except Exception:
                module.fail_json(msg="Configuring SMTP relay host failed")
    elif current_smtp.relay_host and not module.params["host"]:
        smtp_settings = Smtp(relay_host="")
        changed = True
        if not module.check_mode:
            try:
                blade.smtp.update_smtp(smtp_settings=smtp_settings)
            except Exception:
                module.fail_json(msg="Configuring SMTP relay host failed")
    if module.params["domain"] != current_smtp.sender_domain:
        smtp_settings = Smtp(sender_domain=module.params["domain"])
        changed = True
        if not module.check_mode:
            try:
                blade.smtp.update_smtp(smtp_settings=smtp_settings)
            except Exception:
                module.fail_json(msg="Configuring SMTP sender domain failed")
    module.exit_json(changed=changed)


def main():
    argument_spec = purefb_argument_spec()
    argument_spec.update(
        dict(
            host=dict(type="str"),
            domain=dict(type="str", required=True),
        )
    )

    module = AnsibleModule(argument_spec, supports_check_mode=True)

    blade = get_blade(module)
    api_version = blade.api_version.list_versions().versions
    if MIN_REQUIRED_API_VERSION not in api_version:
        module.fail_json(msg="Purity//FB must be upgraded to support this module.")

    if not HAS_PURITY_FB:
        module.fail_json(msg="purity_fb SDK is required for this module")

    set_smtp(module, blade)
    module.exit_json(changed=False)


if __name__ == "__main__":
    main()