---
- name: Bootstrap Debian System
  vars:
    bootstrap_debian_release: >-
      {{
        'buster' if (os_version | string) == '10'
        else 'bullseye' if (os_version | string) == '11'
        else 'bookworm' if (os_version | string) == '12'
        else 'trixie' if (os_version | string) == '13'
        else 'sid' if (os_version | string) == 'unstable'
        else 'trixie'
      }}
    _config: "{{ lookup('vars', bootstrap_var_key) }}"
    bootstrap_debian_base_csv: "{{ (['ca-certificates'] + _config.base) | unique | join(',') }}"
    bootstrap_debian_extra_args: >-
      {{
        ((_config.extra | default([])) + (_config.conditional | default([])))
        | reject('equalto', '')
        | join(' ')
      }}
  block:
    - name: Validate Debian package configuration
      ansible.builtin.assert:
        that:
          - _config is mapping
          - _config.base is sequence
          - _config.extra is sequence
        fail_msg: "{{ bootstrap_var_key }} must be a dict with base/extra/conditional keys."
        quiet: true

    - name: Install Debian base system
      ansible.builtin.command: >-
        debootstrap --include={{ bootstrap_debian_base_csv }}
        {{ bootstrap_debian_release }} /mnt {{ system_cfg.mirror }}
      register: bootstrap_debian_base_result
      changed_when: bootstrap_debian_base_result.rc == 0

    - name: Write bootstrap sources.list
      ansible.builtin.template:
        src: debian.sources.list.j2
        dest: /mnt/etc/apt/sources.list
        mode: "0644"

    - name: Configure apt performance tuning
      ansible.builtin.copy:
        dest: /mnt/etc/apt/apt.conf.d/99performance
        content: |
          Acquire::Retries "3";
          Acquire::http::Pipeline-Depth "10";
          APT::Install-Recommends "false";
        mode: "0644"

    - name: Update package lists
      ansible.builtin.command: "{{ chroot_command }} apt update"
      register: bootstrap_debian_update_result
      changed_when: bootstrap_debian_update_result.rc == 0

    - name: Install extra packages
      when: bootstrap_debian_extra_args | trim | length > 0
      ansible.builtin.command: "{{ chroot_command }} apt install -y {{ bootstrap_debian_extra_args }}"
      register: bootstrap_debian_extra_result
      changed_when: bootstrap_debian_extra_result.rc == 0

    - name: Remove unnecessary packages
      ansible.builtin.command: "{{ chroot_command }} apt remove -y libcups2 libavahi-common3 libavahi-common-data"
      register: bootstrap_debian_remove_result
      changed_when: bootstrap_debian_remove_result.rc == 0