terraform {
  backend "pg" {
    schema_name = "dmz_dns"
  }

  required_providers {
    libvirt = {
      source = "dmacvicar/libvirt"
    }
    template = {
      source = "hashicorp/template"
    }
  }
}

provider "libvirt" {
  uri = var.libvirt_endpoint
}

resource "libvirt_volume" "main_disk" {
  name             = "${var.name}.iso"
  pool             = "disk"
  size             = 1024 * 1024 * 1024 * 15
  base_volume_name = "debian-bookworm.qcow2"
  base_volume_pool = "iso"
}

resource "libvirt_cloudinit_disk" "cloudinit" {
  name           = "${var.name}.iso"
  pool           = "init"
  user_data      = templatefile("cloud_init.cfg.tftpl", { name = var.name, host_public_key = var.host_public_key })
  network_config = templatefile("network_config.cfg.tftpl", { internal_ip = var.internal_ip })
}

resource "libvirt_domain" "ubuntu" {
  name   = "hermes"
  memory = 1024
  vcpu   = 4

  disk {
    volume_id = libvirt_volume.main_disk.id
  }

  network_interface {
    bridge    = "dmzbr"
    hostname  = var.name
    mac       = "CA:FE:C0:FF:EE:07"
  }

  cloudinit = libvirt_cloudinit_disk.cloudinit.id

  provisioner "local-exec" {
    command = "ansible-playbook -e internal_ip=${var.internal_ip} -T 60 -u root -i ${var.ansible_inventory} ${var.ansible_playbook}"

    environment = {
      ANSIBLE_HOST_KEY_CHECKING = "False"
      ANSIBLE_CONFIG = "${var.ansible_cfg}"
    }
  }

  lifecycle {
    replace_triggered_by = [
      libvirt_cloudinit_disk.cloudinit.id
    ]
  }
}