- name: Check named.conf.options
  become: true
  shell: "grep -c '^\\s*allow-query' /etc/bind/named.conf.options || :"
  register: named_conf
  changed_when: named_conf.stdout in ('', "0")

- debug:
    msg: "BIND has already been configured"
  when: named_conf.stdout not in ('', "0")

- block:
    - name: Install BIND
      become: true
      apt:
        autoclean: yes
        autoremove: yes
        cache_valid_time: 3600
        install_recommends: no
        name: bind9
        state: latest
        update_cache: yes

    - name: Configure BIND
      become: true
      copy:
        src: named.conf.options
        dest: /etc/bind/named.conf.options
        owner: bind
        group: bind
        mode: '0600'

    - name: Reload BIND
      become: true
      service:
        name: named
        state: reloaded

    - name: Configure resolver
      become: true
      copy:
        content: "nameserver 127.0.0.1"
        dest: /etc/resolv.conf
        owner: root
        group: root
        mode: '0644'
  when: named_conf.stdout in ('', "0")