---
- name: System Update Playbook
  hosts: all
  become: yes
  gather_facts: yes
  
  tasks:
    - name: Update apt cache
      apt:
        update_cache: yes
        cache_valid_time: 3600
      when: ansible_os_family == "Debian"
      
    - name: Upgrade all packages
      apt:
        upgrade: yes
        autoremove: yes
        autoclean: yes
      when: ansible_os_family == "Debian"
      register: upgrade_result
      
    - name: Display upgrade results
      debug:
        msg: "System upgrade completed. {{ upgrade_result.changed }} packages were updated."
        
    - name: Check if reboot is required
      stat:
        path: /var/run/reboot-required
      register: reboot_required
      when: ansible_os_family == "Debian"
      
    - name: Notify if reboot is required
      debug:
        msg: "System reboot is required to complete the update."
      when: reboot_required.stat.exists is defined and reboot_required.stat.exists