- name: Check if paru is already installed
  ansible.builtin.command:
    argv:
     - pacman
     - -Qq
     - paru
  register: is_paru_installed
  changed_when: false
  failed_when: false

- name: Stop the role if paru is already installed
  when: is_paru_installed.rc == 0
  ansible.builtin.meta: end_role

- name: Create temporary dir for build
  ansible.builtin.tempfile:
    state: directory
    suffix: paru
  register: paru_tmp

- name: Download the AUR snapshot
  ansible.builtin.get_url:
    url: "https://aur.archlinux.org/cgit/aur.git/snapshot/paru.tar.gz"
    dest: "{{ paru_tmp.path }}/paru.tar.gz"

- name: Extract the snapshot
  ansible.builtin.unarchive:
    src: "{{ paru_tmp.path }}/paru.tar.gz"
    dest: "{{ paru_tmp.path }}"
    remote_src: true

- name: Read the package metadata
  ansible.builtin.slurp:
    src: "{{ paru_tmp.path }}/paru/.SRCINFO"
  register: paru_srcinfo

- name: Extract build and runtime dependencies
  ansible.builtin.set_fact:
    paru_build_deps: >-
      {{ (paru_srcinfo.content | b64decode)
         | regex_findall('(?m)^\s*(?:make|check)?depends(?:_\w+)?\s*=\s*([^\s<>=]+)')
         | unique }}

- name: Ensure build prerequisites are present
  become: true
  ansible.builtin.pacman:
    name: "{{ ['base-devel', 'fakeroot'] + paru_build_deps }}"
    state: present

- name: Build the package (no install)
  ansible.builtin.command:
    argv:
      - makepkg
      - --noconfirm
    chdir: "{{ paru_tmp.path }}/paru"
  environment:
    PKGDEST: "{{ paru_tmp.path }}/paru"

- name: Locate built package(s)
  ansible.builtin.find:
    paths: "{{ paru_tmp.path }}/paru"
    patterns: "*.pkg.tar.zst"
    excludes: "*-debug-*"
    file_type: file
  register: built_pkgs

# Install with root, but OUTSIDE makepkg
- name: Install built package(s)
  become: true
  ansible.builtin.command:
    argv:
      - pacman
      - -U
      - --noconfirm
      - "{{ item.path }}"
    creates: /usr/bin/paru
  loop: "{{ built_pkgs.files }}"

- name: Remove temporary directory
  ansible.builtin.file:
    path: "{{ paru_tmp.path }}"
    state: absent