---
heavy50__interfaces_combined: |-
  {% set ns = namespace(out={}, interfaces_precombined={}, fact_v4=[], fact_v6=[]) %}
  {# assemble interface defaults #}
  {% set interface_defaults_combined = interface_defaults | combine(*(query('vars', *(query('varnames', '^interface_defaults_amend__.+') | sort))), recursive=True) %}
  {# preassemble interfaces with tweaks #}
  {% set ns.interfaces_precombined = interfaces|default({}) | combine(*(query('vars', *(query('varnames', '^interfaces_amend__.+') | sort))), recursive=True) %}
  {# if dynamic_inventory is enabled in defaults, also add other ifaces from dynamic_inventory as empty shells for iteration #}
  {% if interface_defaults_combined.dynamic_inventory|default(False)|bool %}
  {% for item in dynamic_inventory.interfaces.keys()|default([]) if item not in ns.interfaces_precombined %}
  {% set _ = ns.interfaces_precombined.update({item: {}}) %}
  {% endfor %}
  {% endif %}
  {# iterate over precombined interfaces #}
  {% for item, values in ns.interfaces_precombined|dictsort %}
  {# decide if to load info from dynamic_inventory #}
  {% set from_dynamic_inventory = values.dynamic_inventory|default(interface_defaults_combined.dynamic_inventory)|default(False)|bool and dynamic_inventory.interfaces[item] is defined %}
  {% if from_dynamic_inventory %}
  {# determine if to include ips of child ifaces #}
  {% set from_dynamic_inventory_child_ips = values.dynamic_inventory_child_ips|default(interface_defaults_combined.dynamic_inventory_child_ips)|default(True)|bool %}
  {# load info from dynamic_inventory, first pass: ips and ifnames #}
  {% set values_from_dynamic_inventory =
    {} | combine(
      {'ip4': [], 'ip6': []},
      dynamic_inventory.interfaces[item]
        | dict2items
        | selectattr('key', 'in', ['ifname', 'ip4', 'ip6'])
        | selectattr('value')
        | items2dict,
      dynamic_inventory.children_inv
        | map('extract', hostvars, ['dynamic_inventory', 'interfaces'])
        | map('dict2items')
        | flatten
        | map(attribute='value')
        | selectattr('parent', 'equalto', item)
        | map('dict2items')
        | map('selectattr', 'key', 'in', ['ip4', 'ip6'] )
        | map('items2dict')
        | list
        if from_dynamic_inventory_child_ips else {},
      list_merge='append_rp'
    )
  %}
  {# second pass: additional and derivative values #}
  {% set _ = values_from_dynamic_inventory.update(
    {
      "dns4":
        dynamic_inventory_global.networks[
          values_from_dynamic_inventory.ip4[0]|default('noip', True)
          | ansible.utils.ipv4('network/prefix')
        ].dns|default(['noip'], True) | ansible.utils.ipv4('address'),
      "dns6":
        dynamic_inventory_global.networks[
          values_from_dynamic_inventory.ip6[0]|default('noip', True)
          | ansible.utils.ipv6('network/prefix')
        ].dns|default(['noip'], True) | ansible.utils.ipv6('address'),
      "ip4_gateway":
        dynamic_inventory_global.networks[
          values_from_dynamic_inventory.ip4[0]|default('noip', True)
          | ansible.utils.ipv4('network/prefix')
        ].gw|default('noip', True) | ansible.utils.ipv4('address'),
      "ip6_gateway":
        dynamic_inventory_global.networks[
          values_from_dynamic_inventory.ip6[0]|default('noip', True)
          | ansible.utils.ipv6('network/prefix')
        ].gw|default('noip', True) | ansible.utils.ipv6('address'),
      "ip4_method":
        ('sync-auto' if ansible_facts.system == 'FreeBSD' else 'auto')
        if dynamic_inventory.interfaces[item].dhcp|default(False)
        else 'manual'
        if values_from_dynamic_inventory.ip4|default([]) is truthy
        else '',
      "ip6_method":
        ('sync-auto' if ansible_facts.system == 'FreeBSD' else 'auto')
        if dynamic_inventory.interfaces[item].dhcp6|default(False)
        else 'manual'
        if values_from_dynamic_inventory.ip6|default([]) is truthy
        else '',
    }
      | dict2items
      | selectattr('value')
      | items2dict,
  ) %}
  {% else %}
  {# empty data if not loading info from dynamic_inventory #}
  {% set values_from_dynamic_inventory = {} %}
  {% endif %}
  {# special treatment for ifname #}
  {% set ifname = values.ifname|default(values_from_dynamic_inventory.ifname, True)|default(item, True) %}
  {# insert dhcp addresses from ansible_facts #}
  {% set ns.fact_v4 = [] %}{% set ns.fact_v6 = [] %}
  {% if ifname is truthy %}
  {% for addr_dict in [ansible_facts[ifname].ipv4|default({})]|flatten + ansible_facts[ifname].ipv4_secondaries|default([]) %}
  {% set addr = '{}/{}'.format(addr_dict.address|default('noip'), addr_dict.netmask|default('noip')) | ansible.utils.ipv4('cidr') %}
  {% set _ = ns.fact_v4.append(addr) if addr is truthy else False %}
  {% endfor %}
  {% endif %}
  {% if ifname is truthy %}
  {% for addr_dict in ansible_facts[ifname].ipv6|default([])|flatten %}
  {% set addr = '{}/{}'.format(addr_dict.address|default('noip'), addr_dict.prefix|default('noip')) | ansible.utils.ipv6('cidr') %}
  {% set _ = ns.fact_v6.append(addr) if addr is truthy else False %}
  {% endfor %}
  {% endif %}
  {# finalize iface and prepend nameservers if any #}
  {% set _ = ns.out.update(
    {
      item:
        interface_defaults_combined
        | combine(
          values_from_dynamic_inventory,
          values|default({}, True),
          {"ifname": ifname, "ip4_fact": ns.fact_v4, "ip6_fact": ns.fact_v6},
          recursive=True
        )
        | combine(
          {
            "dns4": nameservers_prepend|default(['noip']) | ansible.utils.ipv4('address'),
            "dns6": nameservers_prepend|default(['noip']) | ansible.utils.ipv6('address'),
          },
          list_merge='prepend_rp'
        )
    }
  ) %}
  {# end of iface iteration #}
  {% endfor %}
  {{ ns.out }}