---
- name: "🖥️ Auto-place single-host shared services on first manager (swarm mode)"
  ansible.builtin.add_host:
    name: "{{ (groups['svc-swarm-manager'] | default([]))[0] }}"
    groups: "{{ role_id }}"
  loop: "{{ lookup('roles_with_placement', 'manager') }}"
  loop_control:
    loop_var: role_id
    label: "{{ role_id }}"
  when:
    - (groups['svc-swarm-manager'] | default([]) | length) > 0
    - role_id in groups
    - (groups[role_id] | default([]) | length) == 0
  run_once: true
  changed_when: false

- name: "🔧 auto-place svc-prx-openresty (swarm manager, first compose host) for vhosts"
  ansible.builtin.add_host:
    name: "{{ (groups['svc-swarm-manager'] | default([]))[0] | default(ansible_play_hosts | first) }}"
    groups: svc-prx-openresty
  vars:
    _web_groups: >-
      {{
        groups
        | dict2items
        | selectattr('key', 'match', '^web-')
        | rejectattr('value', 'equalto', [])
        | list
      }}
  when:
    - (groups['svc-prx-openresty'] | default([]) | length) == 0
    - (_web_groups | length) > 0
  run_once: true
  changed_when: false