#!/usr/bin/python

# Copyright (c) 2024, Ryan Cook <rcook@redhat.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: bootc_manage
version_added: 9.3.0
author:
  - Ryan Cook (@cooktheryan)
short_description: Bootc Switch and Upgrade
description:
  - This module manages the switching and upgrading of C(bootc).
options:
  state:
    description:
      - Control whether to apply the latest image or switch the image.
      - B(Note:) This does not reboot the system.
      - Please use M(ansible.builtin.reboot) to reboot the system.
    required: true
    type: str
    choices: ['switch', 'latest']
  image:
    description:
      - The image to switch to.
      - This is required when O(state=switch).
    required: false
    type: str
"""

EXAMPLES = r"""
# Switch to a different image
- name: Provide image to switch to a different image and retain the current running image
  community.general.bootc_manage:
    state: switch
    image: "example.com/image:latest"

# Apply updates of the current running image
- name: Apply updates of the current running image
  community.general.bootc_manage:
    state: latest
"""

RETURN = r"""
"""


from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.common.locale import get_best_parsable_locale


def main():
    argument_spec = dict(
        state=dict(type="str", required=True, choices=["switch", "latest"]),
        image=dict(type="str"),
    )
    module = AnsibleModule(
        argument_spec=argument_spec,
        required_if=[
            ("state", "switch", ["image"]),
        ],
    )

    state = module.params["state"]
    image = module.params["image"]

    if state == "switch":
        command = ["bootc", "switch", image, "--retain"]
    elif state == "latest":
        command = ["bootc", "upgrade"]

    locale = get_best_parsable_locale(module)
    module.run_command_environ_update = dict(
        LANG=locale, LC_ALL=locale, LC_MESSAGES=locale, LC_CTYPE=locale, LANGUAGE=locale
    )
    rc, stdout, err = module.run_command(command, check_rc=True)

    if "Queued for next boot: " in stdout:
        result = {"changed": True, "stdout": stdout}
        module.exit_json(**result)
    elif "No changes in " in stdout or "Image specification is unchanged." in stdout:
        result = {"changed": False, "stdout": stdout}
        module.exit_json(**result)
    else:
        result = {"changed": False, "stderr": err}
        module.fail_json(msg="ERROR: Command execution failed.", **result)


if __name__ == "__main__":
    main()