- name: Setup scrub units
  ansible.builtin.copy:
    src: "{{ item }}"
    dest: /etc/systemd/system/
    mode: "0644"
    owner: root
    group: root
  with_items:
    - 'btrfs-scrub@.service'
    - 'btrfs-scrub@.timer'
  notify: daemon_reload
  become: true

- name: Run pending handlers
  ansible.builtin.meta: flush_handlers

- name: Determine btrfs mounts
  ansible.builtin.set_fact:
    btrfs_mounts: "{{ ansible_facts['mounts'] | selectattr('fstype', 'equalto', 'btrfs') | map(attribute='mount') | list }}"

- name: Determine systemd-friendly refs for BTRFS mount points
  ansible.builtin.command: "systemd-escape -p -- {{ item }}"
  register: sanitized_mounts
  loop: "{{ btrfs_mounts }}"
  changed_when: false

- name: Ensure the scrub timer is enabled for discovered BTRFS filesystems
  ansible.builtin.systemd:
    name: "btrfs-scrub@{{ item.stdout }}.timer"
    enabled: true
  with_items: "{{ sanitized_mounts.results }}"
  become: true