---
- name: Deploy and Reload Caddy & frpc on Heterogeneous Systems
  hosts: caddy_servers
  become: yes

  # # 'pre_tasks' 会在所有常规 'tasks' 之前执行
  # pre_tasks:
  #   - name: "(Alpine Only) Ensure Python 3 is installed for Ansible"
  #     # 使用 'raw' 模块，因为它不依赖 Python
  #     # 这是一个标准的在 Alpine 上引导 Ansible 的方法
  #     raw: test -e /usr/bin/python3 || (apk update && apk add python3)
  #     register: result
  #     changed_when: "'OK' in result.stdout or 'fetch' in result.stdout"
  #     # 'when' 条件确保这个任务只在 Alpine 系统上运行
  #     when: ansible_os_family == "Alpine"

  tasks:
    # --- Caddy 任务 (保持不变) ---
    - name: "Copy Caddyfile for {{ inventory_hostname }}"
      copy:
        src: "files/{{ inventory_hostname }}/Caddyfile"
        dest: /etc/caddy/Caddyfile
        owner: root
        group: caddy
        mode: '0644'
        validate: 'caddy validate --config %s --adapter caddyfile'
      notify: Reload Caddy

  handlers:
    # --- Caddy Handlers (保持不变) ---
    - name: Reload Caddy on systemd systems (e.g., Ubuntu)
      # Both handlers listen for the same notification
      listen: "Reload Caddy"
      systemd:
        name: caddy
        state: reloaded
      # This handler ONLY runs on systems with systemd
      when: ansible_service_mgr == "systemd"

    - name: Reload Caddy on OpenRC systems (e.g., Alpine)
      # Both handlers listen for the same notification
      listen: "Reload Caddy"
      # For Alpine, we use the 'command' module to call its service manager
      command: rc-service caddy reload
      # This handler ONLY runs on systems with openrc
      when: ansible_service_mgr == "openrc"