---
- name: Enable certbot timer.
  systemd:
    name: certbot.timer
    enabled: yes

- name: Install certbot.
  package:
    name: "{{ certbot_package }}"
    state: present

- name: Check for presence of certificates.
  stat:
    path: "/etc/letsencrypt/live/{{ item | first | replace(\"*.\", \"\") }}/cert.pem"
  register: certs_presence
  loop: "{{ certbot_certs }}"

- name: Obtain certificates.
  include_tasks: 'obtain_{{ certbot_method }}.yml'
  when: not item.stat.exists
  loop: "{{ certs_presence.results }}"
...