---

###
# This playbook aims to retrieve a 'state' of our servers, ie for each server:
# - what is the OS, in which version (we focus on debian / ubuntu and centos)
# - for centos and debian-based distribs, how many available updates are there?
#
# Call it with the callback made for it: callback_plugin=update_dashboard in ansible.cfg
# or after running export ANSIBLE_STDOUT_CALLBACK="update_dashboard"
# also: callback_plugins = ./hooks/callback:/usr/share/ansible_plugins/callback_plugins
###

- hosts: "all"

  strategy: free

  tasks:

  #
  ## All hosts ##
  #

  - name: get uptime
    shell: uptime=$(uptime | grep -o "[0-9][0-9]* days" | awk '{ print $1 }'); if [ "$uptime" ]; then echo $uptime; else echo 0; fi
    register: uptime
    changed_when: False
    tags:
      - skip_ansible_lint


  #
  ## Debian / RedHat hosts ##
  #

  # get auto-updates script status
  - include: auto-updates-result.yml
    when: "'auto_updates' in group_names and
           ((ansible_os_family == 'RedHat' and ansible_distribution_major_version|int >= 6) or
            (ansible_os_family == 'Debian' and ansible_distribution_major_version|int >= 8))"

  - name: set status if not in auto-updates
    set_fact: auto_updates_status=NA
    when: "'auto_updates' not in group_names or
           (ansible_os_family == 'RedHat' and ansible_distribution_major_version|int < 6) or
           (ansible_os_family == 'Debian' and ansible_distribution_major_version|int < 8)"

  ## Debian

  # get number of updates and debug
  - name: (debian) update apt cache if older than 1 day
    apt: update_cache=yes cache_valid_time=86400
    register: update_cache_result
    ignore_errors: yes

  - name: (debian) check available updates on debian systems
    shell: apt-get --dry-run dist-upgrade | grep '^Inst' | wc -l warn=no
    register: available_updates
    when: update_cache_result is succeeded

  - name: (Debian) output
    debug: msg="{{ inventory_hostname }};{{ ansible_distribution }};{{ ansible_distribution_major_version }};{{ available_updates.stdout | default('') }};{{ uptime.stdout }};{{ auto_updates_status | default('UNK')}}"
    when: ansible_distribution == "Debian"

  - name: (Ubuntu) output
    debug: msg="{{ inventory_hostname }};{{ ansible_distribution }};{{ ansible_distribution_version }};{{ available_updates.stdout | default('') }};{{ uptime.stdout }};{{ auto_updates_status | default('UNK')}}"
    when: ansible_distribution == "Ubuntu"