---

- name: check if at least one subnet is defined
  assert:
    that:
    - dhcpd_subnets | length > 0
    fail_msg: "No subnet defined"

- name: Include OS-specific variables
  include_vars: "{{ ansible_os_family }}.yml"

- name: install dhcpd with dependencies
  package:
    name: "{{ item }}"
    state: present
  with_items:
  - "{{ dhcpd_package_names }}"

- name: create dhcpd config
  template:
    src: "dhcpd.conf.j2"
    dest: "{{ dhcpd_main_config }}"
    owner: "{{ dhcpd_unix_user }}"
    group: "{{ dhcpd_unix_group }}"
    mode: 0644

- name: cleanup cache files
  block:
  - name: check if cache dir exists
    stat:
      path: "{{ dhcpd_cache_directory }}"
    register: cache_stats
  - name: remove cache dir
    file:
      path: "{{ dhcpd_cache_directory }}"
      state: absent
    when: cache_stats.stat.exists
  - name: create cache dir
    file:
      path: "{{ dhcpd_cache_directory }}"
      owner: "{{ dhcpd_unix_user }}"
      group: "{{ dhcpd_unix_group }}"
      mode: 0755
      state: directory
  - name: create cache files
    file:
      path: "{{ dhcpd_cache_directory }}/{{ item }}"
      owner: "{{ dhcpd_unix_user }}"
      group: "{{ dhcpd_unix_group }}"
      mode: 0644
      state: touch
    with_items:
    - dhcpd.leases
    notify: restart dhcpd

- name: start and enable dhcpd
  systemd:
    name: "{{ item }}"
    state: started
    enabled: yes
  with_items:
  - "{{ dhcpd_service_name }}"