---
- name: Deploy Traefik (Blue/Green)
  hosts: traefik_servers
  become: yes
  vars:
    traefik_version: "{{ traefik_version | default('v3.2.0') }}"
    traefik_base_dir: "/opt/traefik"
    current_color_file: "/tmp/traefik_current_color"

  pre_tasks:
    - name: Read current color
      slurp:
        src: "{{ current_color_file }}"
      register: current_color_raw
      ignore_errors: yes

    - name: Set colors
      set_fact:
        current_color: "{{ current_color_raw.content | b64decode | trim if current_color_raw.content is defined else 'blue' }}"
        new_color: "{{ 'green' if (current_color_raw.content | b64decode | trim if current_color_raw.content is defined else 'blue') == 'blue' else 'blue' }}"

  roles:
    - role: traefik