---
- 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: Debug all relevant variables
    #   debug:
    #     msg: |
    #       === SWARM JOIN DEBUG INFO ===
    #       Current host: {{ inventory_hostname }}
    #       Current host IP: {{ ansible_host }}
    #       ansible_eth1={{ ansible_eth1.ipv4.address }}
          
        # Master group hosts: {{ groups['swarm_master'] }}
        # First master: {{ groups['swarm_master'][0] }}
        
        # Master hostvars:
        # - ansible_host: {{ hostvars[groups['swarm_master'][0]]['ansible_host'] }}
        # - inventory_hostname: {{ hostvars[groups['swarm_master'][0]]['inventory_hostname'] }}
        
        # Remote address calculation:
        # - Raw master ansible_host: {{ hostvars[groups['swarm_master'][0]]['ansible_host'] }}
        # - Fallback to hostname: {{ groups['swarm_master'][0] }}
        # - Final address: {{ hostvars[groups['swarm_master'][0]]['ansible_host'] | default(groups['swarm_master'][0]) }}
        # - With port: {{ hostvars[groups['swarm_master'][0]]['ansible_host'] | default(groups['swarm_master'][0]) }}:2377
        
        # Join token (first 10 chars): {{ worker_token[:10] }}...

    - name: Gather master facts
      ansible.builtin.setup:
      delegate_to: "{{ groups['swarm_master'][0] }}"
      run_once: true
      register: master_facts
      
    # - name: Debug master hostvars
    #   debug:
    #     msg: |
    #       Master hostvars keys: {{ hostvars[groups['swarm_master'][0]].keys() | list }}
    #       Master ansible_eth1: {{ hostvars[groups['swarm_master'][0]].ansible_eth1 | default('Not available') }}
    #       Master node: {{ groups['swarm_master'][0] }}
    #       Master ansible_default_ipv4: {{ hostvars[groups['swarm_master'][0]] }}
    #       Master ansible_default_ipv4: {{ master_facts.ansible_facts }}
    #       remote_addrs: {{ master_facts.ansible_facts ['ansible_eth1']['ipv4']['address'] }}
    #       advertise_addr: {{ ansible_eth1.ipv4.address }}

    - 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 }}" 
        listen_addr: "{{ ansible_eth1.ipv4.address }}:2377"