infra/ansible/roles/services_runit/tasks/main.yml

---
- name: Enable base runit services
  tags: [services, packages]
  ansible.builtin.file:
    src: "/etc/sv/{{ item }}"
    dest: "/var/service/{{ item }}"
    state: link
  loop: "{{ enabled_services | default([]) }}"

- name: Enable host runit services
  tags: [services, packages]
  ansible.builtin.file:
    src: "/etc/sv/{{ item }}"
    dest: "/var/service/{{ item }}"
    state: link
  loop: "{{ host_enabled_services | default([]) }}"

- name: Define desktop display manager services
  tags: [services, packages, display-manager]
  ansible.builtin.set_fact:
    services_runit_desktop_display_manager_service: >-
      {{ desktop_display_manager_by_environment[desktop_environment | default('minimal')] }}
    services_runit_inactive_display_manager_services: >-
      {{
        desktop_display_manager_by_environment.values()
        | list
        | difference([desktop_display_manager_by_environment[desktop_environment | default('minimal')]])
      }}
  when: "'desktop' in group_names"

- name: Inspect selected desktop display manager service
  tags: [services, packages, display-manager]
  ansible.builtin.stat:
    path: "/var/service/{{ services_runit_desktop_display_manager_service }}"
  register: services_runit_selected_display_manager_link
  when: "'desktop' in group_names"

- name: Inspect inactive desktop display manager services
  tags: [services, packages, display-manager]
  ansible.builtin.stat:
    path: "/var/service/{{ item }}"
  loop: "{{ services_runit_inactive_display_manager_services }}"
  loop_control:
    label: "{{ item }}"
  register: services_runit_inactive_display_manager_links
  when: "'desktop' in group_names"

- name: Record active inactive desktop display managers
  tags: [services, packages, display-manager]
  ansible.builtin.set_fact:
    services_runit_active_inactive_display_managers: >-
      {{
        services_runit_inactive_display_manager_links.results
        | selectattr('stat.exists')
        | map(attribute='item')
        | list
      }}
  when: "'desktop' in group_names"

- name: Report deferred desktop display manager switch
  tags: [services, packages, display-manager]
  ansible.builtin.debug:
    msg: >-
      {{ desktop_environment }} is configured, but
      {{ services_runit_active_inactive_display_managers | join(', ') }} is still active.
      Re-run from a TTY or SSH session with
      -e desktop_allow_display_manager_switch=true to switch safely to
      {{ services_runit_desktop_display_manager_service }}.
  when:
    - "'desktop' in group_names"
    - (services_runit_active_inactive_display_managers | length) > 0
    - not (desktop_allow_display_manager_switch | default(false))

- name: Disable inactive desktop display managers
  tags: [services, packages, display-manager]
  ansible.builtin.file:
    path: "/var/service/{{ item }}"
    state: absent
  loop: "{{ services_runit_active_inactive_display_managers }}"
  loop_control:
    label: "{{ item }}"
  register: services_runit_display_manager_disabled
  when:
    - "'desktop' in group_names"
    - (services_runit_active_inactive_display_managers | length) > 0
    - desktop_allow_display_manager_switch | default(false)

- name: Enable selected desktop display manager
  tags: [services, packages, display-manager]
  ansible.builtin.file:
    src: "/etc/sv/{{ services_runit_desktop_display_manager_service }}"
    dest: "/var/service/{{ services_runit_desktop_display_manager_service }}"
    state: link
  register: services_runit_display_manager_enabled
  when:
    - "'desktop' in group_names"
    - not services_runit_selected_display_manager_link.stat.exists
    - >-
      (services_runit_active_inactive_display_managers | length) == 0
      or (desktop_allow_display_manager_switch | default(false))

- name: Remove inactive desktop display manager packages after switching
  tags: [services, packages, display-manager]
  community.general.xbps:
    name: "{{ item }}"
    state: absent
    update_cache: false
  loop: "{{ services_runit_inactive_display_manager_services }}"
  loop_control:
    label: "{{ item }}"
  when:
    - "'desktop' in group_names"
    - >-
      services_runit_selected_display_manager_link.stat.exists
      or (services_runit_display_manager_enabled is defined and services_runit_display_manager_enabled is changed)
    - >-
      (services_runit_active_inactive_display_managers | length) == 0
      or (desktop_allow_display_manager_switch | default(false))