---
- name: Bootstrap everything needed for an ansible connection
  hosts: "{{ target_hosts | default('all', true) }}"
  become: "{{ target_host_become | default(true, false) }}"
  gather_facts: false
  pre_tasks:
    - name: Gather information about the target system id
      ansible.builtin.raw: "cat /etc/os-release | grep '^ID=' | cut -d '=' -f2"
      register: target_host_os_info
      check_mode: false
      changed_when: false
    - name: Set /etc/os-release system id
      ansible.builtin.set_fact:
        target_host_system_id: "{{ target_host_os_info.stdout_lines | first | trim }}"
      delegate_to: localhost
    - name: Gather information about the target system version
      ansible.builtin.raw: "cat /etc/os-release | grep '^VERSION_ID=' | cut -d '=' -f2"
      register: target_host_os_info_version
      check_mode: false
      changed_when: false
    - name: Set /etc/os-release system version id
      ansible.builtin.set_fact:
        target_host_system_version_id: "{{ target_host_os_info_version.stdout_lines | first | trim }}"
      delegate_to: localhost

  tasks:
    - name: Ensure apt bootstrap packages are installed
      ansible.builtin.raw: "apt install {{ apt_bootstrap_packages | join(' ') }}"
      register: target_host_apt_info
      when: target_host_system_id in targets_using_apt
      changed_when:
        - "'0 upgraded' not in target_host_apt_info.stdout_lines | last"
        - "'0 newly installed' not in target_host_apt_info.stdout_lines | last"
    - name: Ensure dnf < 4 bootstrap packages are installed
      ansible.builtin.raw: "dnf install --assumeyes {{ dnf4_bootstrap_packages | join(' ') }}"
      register: target_host_dnf_info
      when:
        - target_host_system_id in targets_using_dnf4.keys()
        - target_host_system_version_id | int < targets_using_dnf4[target_host_system_id]
      changed_when:
        - "(target_host_dnf_info.stdout_lines | last) != 'Nothing to do.'"
    - name: Ensure dnf5 bootstrap packages are installed
      ansible.builtin.raw: "dnf install --assumeyes {{ dnf5_bootstrap_packages | join(' ') }}"
      register: target_host_dnf_info
      when:
        - target_host_system_id in targets_using_dnf5.keys()
        - target_host_system_version_id | int >= targets_using_dnf5[target_host_system_id]
      changed_when:
        - "(target_host_dnf_info.stdout_lines | last) != 'Nothing to do.'"
    - name: Sort hosts into os-specific groups
      ansible.builtin.group_by:
        key: >-2
          {{ (os_group_prefix
             | default(false, true)
             | ternary(os_group_prefix | default('') + (os_group_seperator | default('_')), ''))
             + target_host_system_id }}
      when: target_hosts_sort_into_system_ids | default(false, true)
      changed_when: false
      delegate_to: localhost
  vars:
    targets_using_apt:
      - debian
      - ubuntu
    apt_bootstrap_packages:
      - python3
      - python3-apt
    # default package manager is dnf5 since fedora 41
    # https://fedoraproject.org/wiki/Changes/SwitchToDnf5#Current_status
    targets_using_dnf4:
      fedora: 41
    targets_using_dnf5:
      fedora: 41
    dnf4_bootstrap_packages:
      - python3
      - python3-dnf
      - python3-libdnf
    dnf5_bootstrap_packages:
      - python3-libdnf5