variable "vms" {
  type = list(map(any))
}

terraform {
  required_providers {
    libvirt = {
      source = "dmacvicar/libvirt"
    }
  }
}

provider "libvirt" {
  uri = "qemu:///system"
}

resource "libvirt_network" "swarm" {
  name      = "swarm"
  mode      = "nat"
  addresses = ["10.2.3.0/24"]
  autostart = true
  dhcp {
    enabled = false
  }
  dns {
    enabled = true
  }
}

resource "libvirt_volume" "os_image" {
  for_each = { for vm in var.vms : vm.name => vm }

  name   = each.value["os_image_name"]
  pool   = each.value["storage_pool"]
  source = each.value["os_image_url"]
  format = "qcow2"
}

resource "libvirt_volume" "os_datas" {
  for_each = { for vm in var.vms : vm.name => vm }

  name           = each.value["os_datas_name"]
  base_volume_id = libvirt_volume.os_image[each.key].id
  pool           = each.value["storage_pool"]
  size           = each.value["disksize"] * 1024 * 1024 * 1024
}

data "template_file" "user_data" {
  for_each = { for vm in var.vms : vm.name => vm }

  template = file("${path.module}/${each.value["user_data"]}")

  vars = {
    hostname = each.value["hostname"]
  }
}

data "template_file" "network_config" {
  for_each = { for vm in var.vms : vm.name => vm }

  template = file("${path.module}/${each.value["network_config"]}")

  vars = {
    network_ip = each.value["network_ip"]
  }
}

resource "libvirt_cloudinit_disk" "cloudinit" {
  for_each = { for vm in var.vms : vm.name => vm }

  name           = "${each.key}-cloudinit.iso"
  user_data      = data.template_file.user_data[each.key].rendered
  network_config = data.template_file.network_config[each.key].rendered
  pool           = each.value["storage_pool"]
}

resource "libvirt_domain" "domain" {
  for_each = { for vm in var.vms : vm.name => vm }

  name   = each.value["name"]
  memory = each.value["memory"]
  vcpu   = each.value["cpu"]

  cpu {
    mode = "host-passthrough"
  }

  cloudinit = libvirt_cloudinit_disk.cloudinit[each.key].id

  network_interface {
    network_name = each.value["network_name"]
  }

  console {
    type        = "pty"
    target_port = "0"
    target_type = "serial"
  }

  console {
    type        = "pty"
    target_type = "virtio"
    target_port = "1"
  }

  disk {
    volume_id = libvirt_volume.os_datas[each.key].id
  }

  graphics {
    type        = "spice"
    listen_type = "address"
    autoport    = true
  }

}