computer-playbook/roles/nginx-certbot/tasks/main.yml

- name: install certbot
  pacman:
    name: [certbot,certbot-nginx]
    state: present
  when: run_once_nginx_certbot is not defined

- name: configure certbot.service.tpl
  template: 
    src:  certbot.service.j2
    dest: /etc/systemd/system/certbot.service
  notify: reload certbot service
  when: run_once_nginx_certbot is not defined

- name: configure certbot.timer.tpl
  template:
    src:  certbot.timer.j2
    dest: /etc/systemd/system/certbot.timer
  register: certbot_timer
  changed_when: certbot_timer.changed or activate_all_timers | bool
  notify: restart certbot timer
  when: run_once_nginx_certbot is not defined

- name: run the nginx_certbot tasks once
  set_fact:
    run_once_nginx_certbot: true
  when: run_once_nginx_certbot is not defined