- name: Check if pacman is installed
  command: pacman --version
  register: pacman_version
  changed_when: no
  failed_when: no

- when: pacman_version.rc == 0
  become: yes
  block:
    - name: Upgrade packages
      community.general.pacman:
        update_cache: yes
        upgrade: yes
      register: pacman_result
      notify: reboot

    - debug:
        var: pacman_result.packages
      when: pacman_result.changed

    - name: Flush handlers
      meta: flush_handlers
  rescue:
    - fail:
        msg: Upgrading packages failed for an unknown reason!
      when: not etc_versioned

    - name: Check for changes in /etc
      command: git status --porcelain=v1
      args:
        chdir: /etc
      register: git_status
      changed_when: no
      failed_when: no

    - fail:
        msg: Upgrading packages failed for an unknown reason!
      when: not git_status.stdout

    - name: All changes in /etc are in pacman.d/gnupg?
      shell: git status --porcelain=v1 | cut -c 4- | grep -G -v '^pacman.d/gnupg/'
      args:
        chdir: /etc
      register: only_gnupg
      changed_when: no
      failed_when: no

    - name: Commit changes in /etc
      command: |
        etckeeper commit 'pacman: GPG keys'
      when: git_status.stdout and only_gnupg.rc != 0

    - name: Upgrade packages after GPG keys
      community.general.pacman:
        update_cache: yes
        upgrade: yes
      register: pacman_result
      notify: reboot

    - debug:
        var: pacman_result.packages
      when: pacman_result.changed

    - name: Flush handlers
      meta: flush_handlers