---
- name: Write Alpine network interfaces
  ansible.builtin.copy:
    dest: /mnt/etc/network/interfaces
    mode: "0644"
    content: |
      auto lo
      iface lo inet loopback
      {% for iface in system_cfg.network.interfaces %}
      {% set inv_name = iface.name | default('') | string %}
      {% set det_name = configuration_detected_interfaces[loop.index0] | default('eth' ~ loop.index0) %}
      {% set iface_name = inv_name if inv_name | length > 0 else det_name %}
      {% set has_static = (iface.ip | default('') | string | length) > 0 %}

      auto {{ iface_name }}
      iface {{ iface_name }} inet {{ 'static' if has_static else 'dhcp' }}
      {% if has_static %}
        address {{ iface.ip }}/{{ iface.prefix }}
      {% if iface.gateway | default('') | string | length %}
        gateway {{ iface.gateway }}
      {% endif %}
      {% endif %}
      {% endfor %}

- name: Set Alpine DNS resolvers
  when: configuration_dns_list | length > 0 or configuration_dns_search | length > 0
  ansible.builtin.copy:
    dest: /mnt/etc/resolv.conf
    mode: "0644"
    content: |
      {% if configuration_dns_search | length > 0 %}
      search {{ configuration_dns_search | join(' ') }}
      {% endif %}
      {% for resolver in configuration_dns_list %}
      nameserver {{ resolver }}
      {% endfor %}