---
# Create a single switch VM using virt-install

- name: "{{ switch_name }} - Check if VM exists"
  command: virsh dominfo {{ switch_name }}
  register: vm_exists
  failed_when: false
  changed_when: false

- name: "{{ switch_name }} - Build link list"
  set_fact:
    switch_links: []

- name: "{{ switch_name }} - Add links where this switch is local"
  set_fact:
    switch_links: "{{ switch_links + [{'port': link_item.local_port, 'udp_local': udp_base_port + (link_idx * 2), 'udp_remote': udp_base_port + (link_idx * 2) + 1}] }}"
  loop: "{{ topology.links }}"
  loop_control:
    loop_var: link_item
    index_var: link_idx
    label: "{{ link_item.local }}:{{ link_item.local_port }}"
  when: link_item.local == switch_name

- name: "{{ switch_name }} - Add links where this switch is remote"
  set_fact:
    switch_links: "{{ switch_links + [{'port': link_item.remote_port, 'udp_local': udp_base_port + (link_idx * 2) + 1, 'udp_remote': udp_base_port + (link_idx * 2)}] }}"
  loop: "{{ topology.links }}"
  loop_control:
    loop_var: link_item
    index_var: link_idx
    label: "{{ link_item.remote }}:{{ link_item.remote_port }}"
  when: link_item.remote == switch_name

- name: "{{ switch_name }} - Add server links"
  set_fact:
    switch_links: "{{ switch_links + [{'port': srv_item.switch_port, 'udp_local': udp_base_port + ((topology.links | length + srv_idx) * 2), 'udp_remote': udp_base_port + ((topology.links | length + srv_idx) * 2) + 1}] }}"
  loop: "{{ servers | default([]) }}"
  loop_control:
    loop_var: srv_item
    index_var: srv_idx
    label: "{{ srv_item.name }}"
  when: srv_item.connected_to == switch_name

- name: "{{ switch_name }} - Debug links"
  debug:
    msg: "Links for {{ switch_name }}: {{ switch_links }}"

- name: "{{ switch_name }} - Build virt-install command"
  set_fact:
    virt_install_cmd: >-
      virt-install
      --name {{ switch_name }}
      --vcpus {{ switch_vcpus }}
      --memory {{ switch_memory_mb }}
      --import
      --disk path={{ vm_disk_path }}/{{ switch_name }}.qcow2,bus=sata
      --graphics none
      --video none
      --osinfo detect=on,require=off
      --network none
      --controller usb,model=none
      --noautoconsole
      --qemu-commandline='-netdev user,id=mgmt,net=192.168.0.0/24,hostfwd=tcp::{{ ssh_port }}-:22'
      --qemu-commandline='-device virtio-net-pci,netdev=mgmt,mac=00:01:00:00:{{ "%02x" | format(switch_index | int) }}:00,bus=pci.0,addr=0x10'
      {% for link in switch_links %}
      --qemu-commandline='-netdev socket,udp=127.0.0.1:{{ link.udp_remote }},localaddr=127.0.0.1:{{ link.udp_local }},id={{ link.port }}'
      --qemu-commandline='-device virtio-net-pci,mac=00:02:00:{{ "%02x" | format(switch_index | int) }}:{{ "%02x" | format(loop.index) }}:{{ "%02x" | format(link.udp_local % 256) }},netdev={{ link.port }},bus=pci.0,addr=0x{{ "%x" | format(17 + loop.index0) }}'
      {% endfor %}

- name: "{{ switch_name }} - Create VM with virt-install"
  shell: "{{ virt_install_cmd }}"
  when: vm_exists.rc != 0

- name: "{{ switch_name }} - Start VM if not running"
  command: virsh start {{ switch_name }}
  register: start_result
  failed_when: start_result.rc != 0 and 'already active' not in start_result.stderr
  changed_when: start_result.rc == 0
  when: vm_exists.rc == 0

- name: "{{ switch_name }} - Set autostart"
  command: virsh autostart {{ switch_name }}
  changed_when: false