---
# Loading vars
- name: Add the OS specific varibles
  include_vars: "{{ ansible_os_family }}.yml"

# Install DHCP server
- name: Install the required  packages in Redhat derivatives
  yum: name={{ dhcp_server_package }} state=installed
  when: ansible_os_family == 'RedHat'

- name: Install the required packages in Debian derivatives
  apt: name={{ dhcp_server_package }} state=installed update_cache=yes
  when: ansible_os_family == 'Debian'

- name: Install the required packages in ArchLinux derivatives
  pacman: name={{ dhcp_server_package }} state=installed update_cache=yes
  when: ansible_os_family == 'Archlinux'

# Configuring AppArmor if requested
- name: Check if the /etc/apparmor.d/local folder exists
  stat: path=/etc/apparmor.d/local
  when: configure_apparmor
  register: apparmor_local

- name: Configure AppArmor to allow dhcpd access to temporary ansible files for configuration checking
  copy: src=apparmor/usr.sbin.dhcpd dest=/etc/apparmor.d/local/usr.sbin.dhcpd owner=root group=root mode=0644
  when: configure_apparmor and apparmor_local.stat.exists
  notify:
    - restart apparmor

- meta: flush_handlers

# Set desired permissions on /etc/dhcp or use defaults
- name: Set permissions on /etc/dhcp
  file: path=/etc/dhcp state=directory mode={{ dhcp_dir_mode | default("0750") }}
  when: "ansible_os_family == 'Debian' or ansible_os_family == 'RedHat'"

# Generate configuration
- name: Generate dhcpd.conf
  template: src=dhcpd.conf.j2 dest={{ dhcp_server_config }} owner=root group=root mode=0644 validate='/usr/sbin/dhcpd -t -cf %s'
  notify:
    - restart dhcpd

# Generate service configuration
- name: Generate DHCP service conf
  template: src=service.conf.{{ ansible_os_family }}.j2 dest={{ dhcp_service_config }} owner=root group=root
  when: ansible_os_family == 'Debian' or (ansible_os_family == 'RedHat' and ansible_distribution_major_version < '7')
  notify:
    - restart dhcpd

# Enable DHCP server
- name: Start the dhcp services DHCP
  service: name={{ dhcp_service }} state=started enabled=yes