locals {
  image_name    = "talos-1.10.2"
  flavor_name   = "medium"
  net_id        = openstack_networking_network_v2.net.id
  secgroup_id   =  openstack_networking_secgroup_v2.secgroup.id # Using existing security group ID

  cp_fixed_ips     = ["10.0.0.10", "10.0.0.11", "10.0.0.12"]
  worker_fixed_ips = ["10.0.0.20", "10.0.0.21", "10.0.0.22"]
}

# 3 control-planes
resource "openstack_compute_instance_v2" "cp" {
  count           = 3
  name            = "ikt210-g04-control-plane-${count.index}"
  image_name      = local.image_name
  flavor_name     = local.flavor_name
  security_groups = [local.secgroup_id]

  user_data = yamlencode(merge(
      yamldecode(file("./../talos/worker.yaml")),
      {
      cluster = merge(
          yamldecode(file("./../talos/controlplane.yaml")).cluster,
          {
              controlPlane = {
                  endpoint = "https://${openstack_networking_floatingip_v2.talos_ikt210_g04_floatingip[0].address}:6443"
              }
          }
      )
      machine = merge(
        yamldecode(file("./../talos/controlplane.yaml")).machine,
        {
          certSANs = [
            openstack_networking_floatingip_v2.talos_ikt210_g04_floatingip[count.index].address,
          ]
        }
      )
    }
  ))

  network {
    uuid        = local.net_id
    fixed_ip_v4 = local.cp_fixed_ips[count.index]
  }

}

# 3 workers
resource "openstack_compute_instance_v2" "worker" {
  count           = 3
  name            = "ikt210-g04-worker-${count.index}"
  image_name      = local.image_name
  flavor_name     = local.flavor_name
  security_groups = [local.secgroup_id]

  user_data = yamlencode(merge(
      yamldecode(file("./../talos/worker.yaml")),
      {
      cluster = merge(
          yamldecode(file("./../talos/worker.yaml")).cluster,
          {
              controlPlane = {
                  endpoint = "https://${openstack_networking_floatingip_v2.talos_ikt210_g04_floatingip[0].address}:6443"
              }
          }
      )
      machine = merge(
        yamldecode(file("./../talos/worker.yaml")).machine,
        {
          certSANs = [
            openstack_networking_floatingip_v2.talos_ikt210_g04_floatingip[count.index].address,
          ]
        }
      )
    }
  ))

  network {
    uuid        = local.net_id
    fixed_ip_v4 = local.worker_fixed_ips[count.index]
  }

}

# Reserve 3 floating IPs for the control-planes
resource "openstack_networking_floatingip_v2" "talos_ikt210_g04_floatingip" {
  count   = 3
  pool    = "provider"
  # Openstack will automatically assign available IPs
}

# Associate each FIP with the corresponding control-plane
resource "openstack_compute_floatingip_associate_v2" "cp_assoc" {
  count       = 3
  floating_ip = openstack_networking_floatingip_v2.talos_ikt210_g04_floatingip[count.index].address
  instance_id = openstack_compute_instance_v2.cp[count.index].id
  fixed_ip    = openstack_compute_instance_v2.cp[count.index].network[0].fixed_ip_v4
}