---
# DNS Configuration and Reverse DNS Setup
- name: Wait for Samba DNS to be ready
  wait_for:
    port: 53
    host: 127.0.0.1
    delay: 5
    timeout: 30

- name: Check if reverse DNS zone already exists
  command: >
    samba-tool dns zonelist 127.0.0.1
    --username=Administrator --password={{ samba_admin_password }}
  register: existing_zones
  changed_when: false
  failed_when: false

- name: Create reverse DNS zone
  command: >
    samba-tool dns zonecreate 127.0.0.1 100.168.192.in-addr.arpa
    --username=Administrator --password={{ samba_admin_password }}
  register: reverse_zone
  changed_when: reverse_zone.rc == 0
  failed_when: reverse_zone.rc != 0 and "already exists" not in reverse_zone.stderr
  when: "'100.168.192.in-addr.arpa' not in existing_zones.stdout"

- name: Check existing NS records in reverse zone
  command: >
    samba-tool dns query 127.0.0.1 100.168.192.in-addr.arpa @ NS
    --username=Administrator --password={{ samba_admin_password }}
  register: existing_ns_records
  changed_when: false
  failed_when: false

- name: Add NS record for reverse zone
  command: >
    samba-tool dns add 127.0.0.1 100.168.192.in-addr.arpa @ NS {{ target_hostname }}.{{ samba_realm }}.
    --username=Administrator --password={{ samba_admin_password }}
  register: dns_ns_record
  changed_when: dns_ns_record.rc == 0
  failed_when: dns_ns_record.rc != 0 and "already exists" not in dns_ns_record.stderr
  when: "target_hostname + '.' + samba_realm + '.' not in existing_ns_records.stdout"

- name: Get current server IP address for DNS record
  shell: |
    ip route get 8.8.8.8 | grep -oP 'src \K\S+' | head -1
  register: current_server_ip
  changed_when: false

- name: Extract host part from IP address
  set_fact:
    ip_host_part: "{{ current_server_ip.stdout.split('.')[3] }}"

- name: Check existing PTR records in reverse zone
  command: >
    samba-tool dns query 127.0.0.1 100.168.192.in-addr.arpa {{ ip_host_part }} PTR
    --username=Administrator --password={{ samba_admin_password }}
  register: existing_ptr_records
  changed_when: false
  failed_when: false

- name: Add PTR record for reverse zone
  command: >
    samba-tool dns add 127.0.0.1 100.168.192.in-addr.arpa {{ ip_host_part }} PTR {{ target_hostname }}.{{ samba_realm }}.
    --username=Administrator --password={{ samba_admin_password }}
  register: dns_ptr_record
  changed_when: dns_ptr_record.rc == 0
  failed_when: dns_ptr_record.rc != 0 and "already exists" not in dns_ptr_record.stderr
  when: "target_hostname + '.' + samba_realm + '.' not in existing_ptr_records.stdout"