- name: Check Host Availability
  hosts: all
  gather_facts: false

  tasks:
    - name: Ping hosts to check availability
      ansible.builtin.ping:
      register: ping_result
      ignore_errors: true

    - name: Add reachable hosts to group
      ansible.builtin.group_by:
        key: reachable_hosts
      when: ping_result is succeeded

    - name: Report offline hosts
      ansible.builtin.debug:
        msg: "Host {{ inventory_hostname }} is OFFLINE and will be skipped"
      when: ping_result is failed

- name: Update and Upgrade Packages
  hosts: reachable_hosts
  become: true
  gather_facts: true

  tasks:
    - name: Update & Upgrade - Debian-based systems
      ansible.builtin.apt:
        update_cache: true
        cache_valid_time: 3600
        upgrade: dist
      when: ansible_os_family == "Debian"

    - name: Update & Upgrade - Modern RHEL-based systems (DNF)
      ansible.builtin.dnf:
        name: "*"
        state: latest
        update_cache: true
      when:
        - ansible_os_family == "RedHat"
        - ansible_pkg_mgr == "dnf"

    - name: Update & Upgrade - Legacy RHEL-based systems (YUM)
      ansible.builtin.yum:
        name: "*"
        state: latest
        update_cache: true
      when:
        - ansible_os_family == "RedHat"
        - ansible_pkg_mgr == "yum"