---
- name: Update CentOS Stream 9 Halo Servers
  hosts: centos_stream
  become: yes
  tasks:
    - name: Check for logged in users
      shell: who | wc -l
      register: logged_users
      changed_when: false

    - name: Display logged in user count
      debug:
        msg: "{{ logged_users.stdout }} user(s) currently logged in"

    - name: Check if we should skip this host
      set_fact:
        skip_updates: "{{ logged_users.stdout | int > 1 }}"

    - name: Host will be skipped due to logged in users
      debug:
        msg: "Host: {{ inventory_hostname }} - Skipping updates due to {{ logged_users.stdout }} users logged in"
      when: skip_updates

    - name: Ensure all packages are up to date
      dnf:
        name: '*'
        state: latest
        update_cache: yes
      register: dnf_result
      when: not skip_updates

    - name: Display package update statistics
      debug:
        msg:
          - "Host: {{ inventory_hostname }}"
          - "Packages installed: {{ dnf_result.results | select('match', '^Installed:.*') | list | length }}"
          - "Packages updated: {{ dnf_result.results | select('match', '^Updated:.*') | list | length }}"
          - "Packages removed: {{ dnf_result.results | select('match', '^Removed:.*') | list | length }}"
      when: not skip_updates and dnf_result.changed and dnf_result.results is defined

    - name: No updates needed
      debug:
        msg: "Host: {{ inventory_hostname }} - System is already up to date"
      when: not skip_updates and not dnf_result.changed

    - name: Rebooting the servers
      reboot:
      when: not skip_updates and dnf_result.changed