---
# The probes below must run in check mode as well. The command module does not
# execute under --check, it returns rc 0 with "Command would have run if not in
# check mode", which would otherwise mark every host as a Raspberry Pi and make
# check runs apply the distro specific tasks. The rc values mean: 0 matched, 1 no
# match, 2 the file is absent (no /proc/device-tree on non ARM systems).
- name: Test for raspberry pi /proc/cpuinfo
  ansible.builtin.command: grep -E "Raspberry Pi|BCM2708|BCM2709|BCM2835|BCM2836" /proc/cpuinfo
  register: grep_cpuinfo_raspberrypi
  failed_when: false
  changed_when: false
  check_mode: false

- name: Test for raspberry pi /proc/device-tree/model
  ansible.builtin.command: grep -E "Raspberry Pi" /proc/device-tree/model
  register: grep_device_tree_model_raspberrypi
  failed_when: false
  changed_when: false
  check_mode: false

- name: Set raspberry_pi fact to true
  ansible.builtin.set_fact:
    raspberry_pi: true
  when: (grep_cpuinfo_raspberrypi.rc | default(1)) == 0 or (grep_device_tree_model_raspberrypi.rc | default(1)) == 0

- name: Set detected_distribution to Raspbian (ARM64 on Raspbian, Debian Buster/Bullseye/Bookworm)
  ansible.builtin.set_fact:
    detected_distribution: Raspbian
  vars:
    allowed_descriptions:
      - "[Rr]aspbian.*"
      - Debian.*buster
      - Debian.*bullseye
      - Debian.*bookworm
  when:
    - ansible_facts.architecture is search("aarch64")
    - raspberry_pi|default(false)
    - ansible_facts.lsb.description|default("") is match(allowed_descriptions | join('|'))

- name: Set detected_distribution to Raspbian (ARM64 on Debian Bookworm)
  ansible.builtin.set_fact:
    detected_distribution: Raspbian
  when:
    - ansible_facts.architecture is search("aarch64")
    - raspberry_pi|default(false)
    - ansible_facts.lsb.description|default("") is match("Debian.*bookworm")

- name: Set detected_distribution_major_version
  ansible.builtin.set_fact:
    detected_distribution_major_version: "{{ ansible_facts.lsb.major_release }}"
  when:
    - detected_distribution | default("") == "Raspbian"

- name: Execute OS related tasks on the Raspberry Pi - {{ action_ }}
  ansible.builtin.include_tasks: "{{ item }}"
  with_first_found:
    - "{{ action_ }}/{{ detected_distribution }}-{{ detected_distribution_major_version }}.yml"
    - "{{ action_ }}/{{ detected_distribution }}.yml"
    - "{{ action_ }}/{{ ansible_facts['distribution'] }}-{{ ansible_facts['distribution_major_version'] }}.yml"
    - "{{ action_ }}/{{ ansible_facts['distribution'] }}.yml"
    - "{{ action_ }}/default.yml"
  vars:
    action_: >-
      {% if state == "present" %}setup{% else %}teardown{% endif %}
  when:
    - raspberry_pi|default(false)