---
- hosts: swarm_workers 
  become: true
  gather_facts: yes

  vars:
  roles:
    - role: geerlingguy.swap
    - role: geerlingguy.docker
    - role: common

  tasks:
    - name: Get worker join token from master
      slurp:
        src: /tmp/swarm_worker_token
      register: worker_token_file
      delegate_to: "{{ groups['swarm_master'][0] }}"

    - name: Decode worker join token
      set_fact:
        worker_token: "{{ worker_token_file.content | b64decode | trim }}"

    - name: Gather master facts
      ansible.builtin.setup:
      delegate_to: "{{ groups['swarm_master'][0] }}"
      run_once: true
      register: master_facts

      # Needed as gathering master facts will overwrite
    - name: Regather node facts
      ansible.builtin.setup:
      
    - name: Add nodes
      community.docker.docker_swarm:
        state: join
        join_token: "{{ worker_token }}"
        remote_addrs:
          - "{{ master_facts.ansible_facts['ansible_eth1']['ipv4']['address'] }}:2377"
        advertise_addr: "{{ ansible_eth1.ipv4.address }}" 

    - name: Replace node labels with new labels
      community.docker.docker_node:
        hostname: "{{ inventory_hostname }}"
        labels: "{{ dict(group_names | zip(['true'] * group_names | length)) }}"
        labels_state: replace
      delegate_to: "{{ groups['swarm_master'][0] }}"