terraform {
  required_version = ">= 0.13"
  required_providers {
    libvirt = {
      source  = "dmacvicar/libvirt"
      version = "~> 0.7.0"
    }
  }
}

# instance the provider
provider "libvirt" {
  uri = "qemu:///system"
}

resource "libvirt_pool" "ubuntu" {
  name = "ubuntu"
  type = "dir"
  path = "/tmp/terraform-provider-libvirt-pool-ubuntu"
}

# We fetch the latest ubuntu release image from their mirrors
resource "libvirt_volume" "ubuntu-qcow2" {
  name   = "ubuntu-qcow2"
  pool   = libvirt_pool.ubuntu.name
  source = "https://cloud-images.ubuntu.com/releases/xenial/release/ubuntu-16.04-server-cloudimg-amd64-disk1.img"
  format = "qcow2"
}

# We fetch the latest ubuntu release image from their mirrors
resource "libvirt_volume" "debian-qcow2" {
  name   = "debian-qcow2"
  pool   = libvirt_pool.ubuntu.name
  source = "https://cloud.debian.org/images/cloud/buster/latest/debian-10-genericcloud-amd64.qcow2"
  format = "qcow2"
}



data "template_file" "user_data" {
  template = file("${path.module}/cloud_init.cfg")
}

data "template_file" "network_config" {
  template = file("${path.module}/network_config.cfg")
}

# for more info about paramater check this out
# https://github.com/dmacvicar/terraform-provider-libvirt/blob/master/website/docs/r/cloudinit.html.markdown
# Use CloudInit to add our ssh-key to the instance
# you can add also meta_data field
resource "libvirt_cloudinit_disk" "commoninit" {
  name           = "commoninit.iso"
  user_data      = data.template_file.user_data.rendered
  network_config = data.template_file.network_config.rendered
  pool           = libvirt_pool.ubuntu.name
}

# Create the machine
resource "libvirt_domain" "domain-ubuntu" {
  name   = "ubuntu-terraform"
  memory = "512"
  vcpu   = 1

  cloudinit = libvirt_cloudinit_disk.commoninit.id

  network_interface {
    network_name   = "default"
    wait_for_lease = true
  }

  # IMPORTANT: this is a known bug on cloud images, since they expect a console
  # we need to pass it
  # https://bugs.launchpad.net/cloud-images/+bug/1573095
  console {
    type        = "pty"
    target_port = "0"
    target_type = "serial"
  }

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

  disk {
    volume_id = libvirt_volume.ubuntu-qcow2.id
  }

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

# Create the machine
resource "libvirt_domain" "domain-debian-ansible-playground" {
  name   = "debian-ansible-playground-terraform"
  memory = "3000"
  vcpu   = 4

  cloudinit = libvirt_cloudinit_disk.commoninit.id

  network_interface {
    network_name   = "default"
    wait_for_lease = true
  }

  # IMPORTANT: this is a known bug on cloud images, since they expect a console
  # we need to pass it
  # https://bugs.launchpad.net/cloud-images/+bug/1573095
  console {
    type        = "pty"
    target_port = "0"
    target_type = "serial"
  }

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

  disk {
    volume_id = libvirt_volume.debian-qcow2.id
  }

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



# IPs: use wait_for_lease true or after creation use terraform refresh and terraform show for the ips of domain

output "ubuntu_ip" {
  value = length(libvirt_domain.domain-ubuntu.network_interface[0].addresses) > 0 ? libvirt_domain.domain-ubuntu.network_interface[0].addresses[0] : ""
}

output "debian_ip" {
  value = length(libvirt_domain.domain-debian-ansible-playground.network_interface[0].addresses) > 0 ? libvirt_domain.domain-debian-ansible-playground.network_interface[0].addresses[0] : ""
}

resource "local_file" "hosts_yml" {
  content = templatefile("./templates/hosts.yml.tpl",
    {
      debian_ip = "${length(libvirt_domain.domain-debian-ansible-playground.network_interface[0].addresses) > 0 ? libvirt_domain.domain-debian-ansible-playground.network_interface[0].addresses[0] : ""}"
      ubuntu_ip = "${length(libvirt_domain.domain-ubuntu.network_interface[0].addresses) > 0 ? libvirt_domain.domain-ubuntu.network_interface[0].addresses[0] : ""}"
  })

  filename = "./ansible/inventory/hosts.yml"
}