#!/usr/bin/python
# Copyright (c) 2012, Jim Richardson <weaselkeeper@gmail.com>
# Copyright (c) 2019, Bernd Arnold <wopfel@gmail.com>
# 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: pushover
short_description: Send notifications through U(https://pushover.net)
description:
  - Send notifications through pushover to subscriber list of devices and email addresses. Requires pushover app on devices.
notes:
  - You need a pushover.net account to use this module. But no account is required to receive messages.
extends_documentation_fragment:
  - community.general.attributes
attributes:
  check_mode:
    support: none
  diff_mode:
    support: none
options:
  msg:
    type: str
    description:
      - What message you wish to send.
    required: true
  app_token:
    type: str
    description:
      - Pushover issued token identifying your pushover app.
    required: true
  user_key:
    type: str
    description:
      - Pushover issued authentication key for your user.
    required: true
  title:
    type: str
    description:
      - Message title.
  pri:
    type: str
    description:
      - Message priority (see U(https://pushover.net) for details).
    default: '0'
    choices: ['-2', '-1', '0', '1', '2']
  device:
    type: str
    description:
      - A device the message should be sent to. Multiple devices can be specified, separated by a comma.
    version_added: 1.2.0

author:
  - "Jim Richardson (@weaselkeeper)"
  - "Bernd Arnold (@wopfel)"
"""

EXAMPLES = r"""
- name: Send notifications via pushover.net
  community.general.pushover:
    msg: '{{ inventory_hostname }} is acting strange ...'
    app_token: wxfdksl
    user_key: baa5fe97f2c5ab3ca8f0bb59
  delegate_to: localhost

- name: Send notifications via pushover.net
  community.general.pushover:
    title: 'Alert!'
    msg: '{{ inventory_hostname }} has exploded in flames, It is now time to panic'
    pri: 1
    app_token: wxfdksl
    user_key: baa5fe97f2c5ab3ca8f0bb59
  delegate_to: localhost

- name: Send notifications via pushover.net to a specific device
  community.general.pushover:
    msg: '{{ inventory_hostname }} has been lost somewhere'
    app_token: wxfdksl
    user_key: baa5fe97f2c5ab3ca8f0bb59
    device: admins-iPhone
  delegate_to: localhost
"""

from urllib.parse import urlencode
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.urls import fetch_url


class Pushover:
    """Instantiates a pushover object, use it to send notifications"""

    base_uri = "https://api.pushover.net"

    def __init__(self, module, user, token):
        self.module = module
        self.user = user
        self.token = token

    def run(self, priority, msg, title, device):
        """Do, whatever it is, we do."""

        url = f"{self.base_uri}/1/messages.json"

        # parse config
        options = dict(user=self.user, token=self.token, priority=priority, message=msg)

        if title is not None:
            options = dict(options, title=title)

        if device is not None:
            options = dict(options, device=device)

        data = urlencode(options)

        headers = {"Content-type": "application/x-www-form-urlencoded"}
        r, info = fetch_url(self.module, url, method="POST", data=data, headers=headers)
        if info["status"] != 200:
            raise Exception(info)

        return r.read()


def main():
    module = AnsibleModule(
        argument_spec=dict(
            title=dict(type="str"),
            msg=dict(required=True),
            app_token=dict(required=True, no_log=True),
            user_key=dict(required=True, no_log=True),
            pri=dict(default="0", choices=["-2", "-1", "0", "1", "2"]),
            device=dict(type="str"),
        ),
    )

    msg_object = Pushover(module, module.params["user_key"], module.params["app_token"])
    try:
        response = msg_object.run(
            module.params["pri"], module.params["msg"], module.params["title"], module.params["device"]
        )
    except Exception:
        module.fail_json(msg="Unable to send msg via pushover")

    module.exit_json(msg=f"message sent successfully: {response}", changed=False)


if __name__ == "__main__":
    main()