---
- name: Generate UUID for Network Profile
  ansible.builtin.set_fact:
    configuration_net_uuid: "{{ ('LAN-' ~ hostname) | ansible.builtin.to_uuid }}"
  changed_when: false

- name: Read network interfaces
  ansible.builtin.command:
    argv:
      - ip
      - -o
      - link
      - show
  register: configuration_ip_link
  changed_when: false
  failed_when: false

- name: Resolve network interface and MAC address
  vars:
    configuration_net_inf_from_facts: "{{ (ansible_default_ipv4 | default({})).get('interface', '') }}"
    configuration_net_inf_from_ip: >-
      {{
        (
          configuration_ip_link.stdout
          | default('')
          | regex_findall('^[0-9]+: ([^:]+):', multiline=True)
          | reject('equalto', 'lo')
          | list
          | first
        )
        | default('')
      }}
    configuration_net_inf_effective: >-
      {{ configuration_net_inf_from_facts | default(configuration_net_inf_from_ip, true) }}
    configuration_net_inf_regex: "{{ configuration_net_inf_effective | ansible.builtin.regex_escape }}"
    configuration_net_mac_from_virtualization: "{{ virtualization_mac_address | default('') }}"
    configuration_net_mac_from_facts: >-
      {{
        (
          (ansible_facts | default({})).get(configuration_net_inf_effective, {}).get('macaddress', '')
        )
        | default(
            (ansible_facts | default({})).get('ansible_' + configuration_net_inf_effective, {}).get('macaddress', ''),
            true
          )
      }}
    configuration_net_mac_from_ip: >-
      {{
        (
          configuration_ip_link.stdout
          | default('')
          | regex_findall(
              '^\\d+: ' ~ configuration_net_inf_regex ~ ':.*?link/ether\\s+([0-9A-Fa-f:]{17})',
              multiline=True
            )
          | first
        )
        | default('')
      }}
  ansible.builtin.set_fact:
    configuration_net_inf: "{{ configuration_net_inf_effective }}"
    configuration_net_mac: >-
      {{
        (
          configuration_net_mac_from_virtualization
          | default(configuration_net_mac_from_facts, true)
          | default(configuration_net_mac_from_ip, true)
        )
        | upper
      }}
  changed_when: false

- name: Validate Network Interface Name
  ansible.builtin.assert:
    that:
      - configuration_net_inf | length > 0
    fail_msg: Failed to detect an active network interface.

- name: Validate Network Interface MAC Address
  ansible.builtin.assert:
    that:
      - configuration_net_mac | length > 0
    fail_msg: Failed to detect the MAC address for network interface {{ configuration_net_inf }}.

- name: Copy NetworkManager keyfile
  ansible.builtin.template:
    src: network.j2
    dest: /mnt/etc/NetworkManager/system-connections/LAN.nmconnection
    mode: "0600"

- name: Fix Ubuntu unmanaged devices
  when: os | lower in ["ubuntu", "ubuntu-lts"]
  ansible.builtin.file:
    path: /mnt/etc/NetworkManager/conf.d/10-globally-managed-devices.conf
    state: touch
    mode: "0644"