- name: install dhcpd
  apt:
    name: isc-dhcp-server
    state: present

- name: configure dhcp server
  copy:
    content: |
      option dhcp-max-message-size 2048;
      use-host-decl-names on;

      option architecture-type code 93 = unsigned integer 16;

      subnet {{server_net}}.0 netmask {{server_netmask}} {
        range {{server_net}}.10 {{server_net}}.250;
        default-lease-time 6000;
        max-lease-time 7200;

        option routers {{server_ip}};
        option domain-name "{{domain_name}}";
        option domain-name-servers {{server_ip}};
        option time-servers {{server_ip}};
        option ntp-servers {{server_ip}};
        server-name {{server_name}};
        next-server {{server_ip}};

        allow booting;
        allow bootp;

        class "pxeclients" {
          match if substring (option vendor-class-identifier, 0, 9) = "PXEClient";

          if exists user-class and option user-class = "iPXE" {
              filename "menu.ipxe";
          } else {
            if option architecture-type = 00:09 {
              filename "ipxe.efi";
            } elsif option architecture-type = 00:07 {
              filename "ipxe.efi";
            } elsif option architecture-type = 00:06 {
              filename "ipxe.efi";
            } else {
              filename "ipxe.pxe";
            }
          }
        }
      }
    dest: /etc/dhcp/dhcpd.conf
    mode: u=rw,g=r,o=o
    owner: root
    group: root
    #    validate: dhcpd -t -cf %s
  register: dhcpd_config

- name: set dhcp server interface
  copy:
    content: |
      INTERFACESv4="{{dhcp_interface}}"
      INTERFACESv6=""
    dest: /etc/default/isc-dhcp-server
    mode: u=rw,g=r,o=o
    owner: root
    group: root
  register: dhcp_default_config

- name: reload dhcp
  systemd:
    name: isc-dhcp-server
    state: restarted
  when: dhcp_default_config.changed or dhcpd_config.changed