---
- name: Get installed certificates.
  command: "{{ certbot_script }} certificates"
  changed_when: false
  register: letsencrypt_certs

- name: Set cert_exists to false (to check if cert exists).
  set_fact:
    cert_exists: false

- name: Check if certificate already exists.
  set_fact:
    cert_exists: true
  when: cert_item.domains | sort | difference(item) == []
  with_list: "{{ letsencrypt_certs.stdout_lines | select('match', '.*Domains:.*') | map('regex_replace', '^.*Domains: (.*)$', '\\1') }}"