---
# Copyright 2025, Cleura AB.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

- name: Fetch current GRUB parameters
  ansible.builtin.shell: . /etc/default/grub && echo ${GRUB_CMDLINE_LINUX_DEFAULT}
  register: _openstack_grub_default
  changed_when: false

- name: Update GRUB options
  ansible.builtin.lineinfile:
    path: /etc/default/grub
    regex: '^GRUB_CMDLINE_LINUX_DEFAULT='
    line: 'GRUB_CMDLINE_LINUX_DEFAULT="{{ _openstack_resulting_grub_record }}"'
    backup: true
    mode: '0644'
    owner: root
    group: root
  notify:
    - Update GRUB
  vars:
    # Create list of dicts from the parsed grub parameters, ie:
    # [{'key': 'console', 'value': 'tty0'}]
    _openstack_current_grub: >-
      {{
        _openstack_grub_default.stdout | split(' ') | map('split', '=') | map('zip', ['key', 'value']) | map('map', 'reverse') | map('community.general.dict')
      }}
    # Fetch list of user-provided records which have `state: absent`
    _openstack_absent_grub_records: >-
      {{
        openstack_host_custom_grub_options | selectattr('state', 'defined') | selectattr('state', 'eq', 'absent') | ansible.utils.remove_keys(target='state')
      }}
    # Remove records which should be removed from the list
    _openstack_filtered_custom_grub: >-
      {{
        openstack_host_custom_grub_options | selectattr('state', 'defined') | rejectattr('state', 'eq', 'absent') +
          openstack_host_custom_grub_options | selectattr('state', 'undefined')
      }}
    # Combine the result back from dict to GRUB parameters
    _openstack_resulting_grub_record: |-
      {% set grub = [] %}
      {% for record in (_openstack_current_grub + _openstack_filtered_custom_grub) | unique | reject('in', _openstack_absent_grub_records) %}
      {%   if 'value' in record %}
      {%     set _ = grub.append(record['key'] ~ '=' ~ record['value']) %}
      {%   else %}
      {%     set _ = grub.append(record['key']) %}
      {%  endif %}
      {% endfor %}
      {{ grub | join(' ') }}