// Dependencies management
resource "null_resource" "depends_on" {
  triggers = {
    depends_on = join("", var.depends)
  }
}

// OpenNebula disk image !
resource "opennebula_image" "system" {
    name = var.system_image_name
    description = "System disk image"
    datastore_id = var.one_prod_ds
    //persistent = false
    persistent = true
    //lock = "MANAGE"
    path = var.system_image_source
    dev_prefix = "vd"
    driver = "qcow2"
    format = "qcow2"
    permissions = "660"
    group = "production"
}

resource "opennebula_image" "data" {
    name = var.data_image_name
    description = "Data disk image"
    datastore_id = var.one_prod_ds
    persistent = true
    //lock = "MANAGE"
    path = var.data_image_source
    dev_prefix = "vd"
    driver = "qcow2"
    format = "qcow2"
    permissions = "660"
    group = "production"
    count = var.data_image_name != "" ? 1 : 0
}

// OpenNebula (VM) Template definition
resource "opennebula_template" "vm_template" {
  name = var.vm_shortname
  cpu = var.cpu
  vcpu = var.vcpu
  memory = var.ram
  graphics {
    keymap = "fr"
    listen = "0.0.0.0"
    type = "VNC"
  }
  context = {
    DNS_HOSTNAME = "yes"
    NETWORK = "YES"
    SSH_PUBLIC_KEY = "$USER[SSH_PUBLIC_KEY]"
    USERNAME = "root"
  }

  disk {
    image_id = opennebula_image.system.id
  }

  dynamic "disk" {
    for_each = opennebula_image.data
    content {
      image_id = disk.id
    }
  }

  //labels = var.tag_labels

  dynamic "nic" {
    for_each = var.network_interfaces

    content {
      network_id = var.vnets[nic.value.network_name].id
      model = "virtio"
      ip = nic.value.ip
    }
  }
  permissions = "600"
  group = "production"
  depends_on = [ opennebula_image.system,
                 opennebula_image.data ]
}

// OpenNebula Virtual Machine
resource "opennebula_virtual_machine" "vm" {
  name = var.vm_fqdn
  group = "production"
  timeout = 10
  template_id = opennebula_template.vm_template.id
  depends_on = [ opennebula_template.vm_template,
                 null_resource.depends_on ]
}

resource "dns_a_record_set" "vm_dns_a_record" {
  count = var.dns_a_record == "yes" ? 1 : 0

  zone = var.vm_domain
  name = var.vm_shortname
  ttl = 300

  addresses = [ var.network_interfaces[0].ip ]
  depends_on = [ opennebula_virtual_machine.vm ]
}

resource "dns_cname_record" "vm_dns_cname_record" {
  for_each = var.dns_cname_record

  zone  = var.vm_domain
  name  = each.value
  cname = "${var.vm_fqdn}."
  ttl   = 300

  depends_on = [ opennebula_virtual_machine.vm ]
}