# SPDX-License-Identifier: GPL-3.0-or-later
---
####################################################################
# WARNING: These are designed specifically for Ansible tests       #
# and should not be used as examples of how to write Ansible roles #
####################################################################

# Copyright © Thorsten Glaser <tglaser@b1-systems.de>
# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)

- name: Install prerequisites
  ansible.builtin.apt:
    name:
      - iproute2
    state: present
    install_recommends: false
    update_cache: true

- name: Networking setup, interface
  ansible.builtin.command:
    cmd: "ip link add eth666 type dummy"
    creates: /proc/sys/net/ipv4/conf/eth666/forwarding
  changed_when: true

- name: Networking setup, IPv4
  ansible.builtin.command:
    cmd: "ip addr change 192.0.2.1/24 dev eth666"
  changed_when: true

- name: Networking setup, link
  ansible.builtin.command:
    cmd: "ip link set up dev eth666"
  changed_when: true

- name: Install KEA servers for DHCP and DHCPv6
  ansible.builtin.apt:
    name:
      - kea-dhcp4-server
      - kea-dhcp6-server
    state: present
    install_recommends: false

- name: Set up dhcp4 server, network
  ansible.builtin.lineinfile:
    firstmatch: true
    insertafter: '"interfaces-config": [{]'
    line: '"interfaces": [ "eth666" ]'
    path: /etc/kea/kea-dhcp4.conf
    search_string: '"interfaces": ['

- name: Set up dhcp4 server, hooks
  ansible.builtin.lineinfile:
    firstmatch: true
    insertbefore: '"subnet4": '
    # note: this will fail on architectures other than amd64, but Ubuntu 24.04 does need the full path (Debian trixie is content with just the filename)
    line: '"hooks-libraries": [ { "library": "/usr/lib/x86_64-linux-gnu/kea/hooks/libdhcp_lease_cmds.so" } ],'
    path: /etc/kea/kea-dhcp4.conf
    regexp: '^ *"hooks-libraries":'

- name: Ensure the dhcp4 server is (re)started
  ansible.builtin.service:
    name: kea-dhcp4-server
    state: restarted

- name: Ensure the dhcp6 server is (re)started
  ansible.builtin.service:
    name: kea-dhcp6-server
    state: restarted

# the next tasks are for debugging this integration test if needed
- name: Show dhcp4 server config
  ansible.builtin.command:
    cmd: "cat /etc/kea/kea-dhcp4.conf"
  changed_when: true

- name: Show dhcp4 server log
  ansible.builtin.command:
    cmd: "journalctl -b -u kea-dhcp4-server"
  changed_when: true

- name: Show dhcp6 server log
  ansible.builtin.command:
    cmd: "journalctl -b -u kea-dhcp6-server"
  changed_when: true

# an example for a request acquiring information
- name: Get KEA DHCP6 status
  kea_command:
    command: status-get
    rv_unchanged: [0]
    socket: /run/kea/kea6-ctrl-socket
  register: kea6_status
  ignore_errors: true

- name: Display registered status result
  ansible.builtin.debug:
    msg: KEA DHCP6 running on PID {{ kea6_status.response.arguments.pid }}

# ensure socket option works
- name: Get KEA DHCP4 status
  kea_command:
    command: status-get
    rv_unchanged: [0]
    socket: /run/kea/kea4-ctrl-socket
  register: kea4_status
  ignore_errors: true

# an example for requests modifying state
- name: Remove existing leases for 192.0.2.66, if any
  kea_command:
    command: lease4-del
    arguments:
      ip-address: "192.0.2.66"
    rv_changed: [0]
    rv_unchanged: [3]
  register: lease_del
  ignore_errors: true

- name: Add DHCP lease for 192.0.2.66
  kea_command:
    command: lease4-add
    arguments:
      ip-address: "192.0.2.66"
      hw-address: "00:00:5E:00:53:00"
    rv_changed: [0]
  register: lease_add
  ignore_errors: true

# these all ignore_errors so the network teardown runs in all cases
- name: An unknown command
  kea_command:
    command: get-status
    rv_unchanged: [0]
  register: uc_status
  ignore_errors: true

- name: Networking setup, teardown
  ansible.builtin.command:
    cmd: "ip link del eth666"
  changed_when: true

- name: Ensure dhcp4 and dhcp6 PIDs are different
  ansible.builtin.assert:
    that:
      - kea4_status.response.arguments.pid is integer
      - kea4_status.response.arguments.pid > 0
      - kea6_status.response.arguments.pid is integer
      - kea6_status.response.arguments.pid > 0
      - kea4_status.response.arguments.pid != kea6_status.response.arguments.pid
    fail_msg: 'PIDs are invalid or do not differ (4: {{ kea4_status.response.arguments.pid | default("unknown") }}, 6: {{ kea6_status.response.arguments.pid | default("unknown") }})'
    success_msg: 'PIDs differ (4: {{ kea4_status.response.arguments.pid | default("unknown") }}, 6: {{ kea6_status.response.arguments.pid | default("unknown") }})'

- name: Check results
  ansible.builtin.assert:
    that:
      - kea6_status is not changed
      - kea6_status is not failed
      - kea4_status is not changed
      - kea4_status is not failed
      - lease_del is not failed
      - lease_add is changed
      - lease_add is not failed
      - uc_status is failed