- name: 'configure systemd unit {{ systemd_unit_name }}'
  copy:
    dest: '/etc/systemd/system/{{ systemd_unit_name }}'
    content: |
      # ansible managed
      {{ systemd_unit_config }}
    mode: a=r
  register: _config_file
- name: 'fetch state of systemd unit {{ systemd_unit_name }}'
  systemd:
    name: '{{ systemd_unit_name }}'
  register: _unit
  when: _config_file.changed
- name: 'set state of systemd unit {{ systemd_unit_name }}'
  systemd:
    daemon_reload: '{{ _config_file.changed }}'
    name: '{{ systemd_unit_name }}'
    enabled: '{{ systemd_unit_enabled | default(omit) }}'
    state: >-
      {{ "restarted" if (systemd_unit_state is not defined
                            or systemd_unit_state != "stopped")
                         and _config_file.changed
                         and 'ActiveState' in _unit.status
                         and _unit.status.ActiveState == "active"
         else systemd_unit_state | default(omit) }}
  when: >-
    _config_file.changed
    or systemd_unit_enabled is defined
    or systemd_unit_state is defined
    or (_config_file.changed
        and 'ActiveState' in _unit.status
        and systemd_unit.status.ActiveState == "active")