---
- name: Check if Swarm is already initialized
  ansible.builtin.command:
    cmd: docker info
  register: swarm_check
  changed_when: false

- name: Retrieve manager join token from manager
  ansible.builtin.set_fact:
    manager_token: "{{ hostvars[groups['managers'][0]]['manager_token'].stdout }}"
  when: "'Swarm: inactive' in swarm_check.stdout"

- name: Join manager to Swarm
  ansible.builtin.command:
    cmd: docker swarm join --token {{ manager_token }} {{ hostvars[groups['managers'][0]].ansible_host }}:2377
  when:
    - manager_token is defined
    - "'Swarm: inactive' in swarm_check.stdout"
  register: swarm_join
  changed_when: "'This node joined a swarm as a manager' in swarm_join.stdout"