variable "vms" {
    type = map(object(
      {
        domain = string
        cpu = number
        vcpu = number
        ram = number
        system_image_persistent = bool
        data_disks = list(object({
          name = string
          size = string
          persistent = bool
        }))
        network_interfaces = list(object({
          network_id = string
          ip = string
          mac = string
        }))
        sysdatastore = string
      }
    ))
    description = "Virtual Machines description"
}

variable "image_format" {
    default = "qcow2"
}

variable "dev_prefix" {
    default = "sd"
}

variable "permissions" {
    default = "600"
}

variable "graphics" {
    default = {
        keymap = "fr"
        listen = "0.0.0.0"
        type = "VNC"
    }
  
}

variable "one_image_ds" {
  default = "101"
}

variable "one_sys_datastore" {
  default = "100"
}

locals {
  data_disks = flatten([
    for vm_key, vm in var.vms : [
       for disk in vm.data_disks : {
          vm_key = "${vm_key}.${vm.domain}"
          name = disk.name
          size = disk.size
          persist = disk.persistent
       }
    ]
   ])
}
  
// system image
resource "opennebula_image" "system" {
  for_each = var.vms

  name = "system-${each.key}.${each.value.domain}"
  description = "System disk for ${each.key}"
  datastore_id = var.one_image_ds 
  path = "https://vulcain.cadoles.com/empty_20G"
  persistent = each.value.system_image_persistent
  format = var.image_format
  dev_prefix = var.dev_prefix
  permissions = var.permissions
}


// data image not needed now
resource "opennebula_image" "data" {
  for_each = {
     for ds in local.data_disks : "${ds.vm_key}.${ds.name}" => ds
  }

  name = "${each.value.vm_key}-data-${each.value.name}"
  path = "https://vulcain.cadoles.com/empty_${each.value.size}"
  datastore_id = var.one_image_ds
  description = "Data disk of ${each.value.size} for ${each.value.vm_key}"
  persistent = each.value.persist
  format = var.image_format
  dev_prefix = var.dev_prefix
  permissions = var.permissions
}

resource "opennebula_template" "vm_template" {
  for_each = var.vms

  name = "${each.key}.${each.value.domain}"
  cpu = each.value.cpu
  vcpu = each.value.vcpu
  memory = each.value.ram
  graphics {
    keymap = var.graphics.keymap
    listen = var.graphics.listen
    type = var.graphics.type
  }
  context = {
    SET_HOSTNAME = "$NAME"
    DNS_HOSTNAME = "YES"
    NETWORK = "YES"
    SSH_PUBLIC_KEY = "$USER[SSH_PUBLIC_KEY]"
    USERNAME = "root"
  }
  disk {
    image_id = opennebula_image.system[each.key].id
  }

  dynamic "disk" {
    for_each = {
      for ds in local.data_disks : "${ds.vm_key}.${ds.name}" => ds if "${each.key}.${each.value.domain}" == ds.vm_key
    }
    iterator = current_disk
    content {
      image_id = opennebula_image.data[current_disk.key].id
    }
  }

  //sched_ds_requirements = ( each.value.sysdatastore != "" ? "ID=\"${each.value.sysdatastore}\"" : "ID=\"${var.one_sys_datastore}\"" )
  sched_ds_requirements = ( each.value.sysdatastore != "" ? "ID=\"${each.value.sysdatastore}\"" : "" )

  os {
    arch = "x86_64"
    boot = "disk0,nic0"
  }

  dynamic "nic" {
    for_each = each.value.network_interfaces

    content {
      network_id = nic.value.network_id
      model = "virtio"
      mac = ( nic.value.mac != "" ? nic.value.mac : "" )
      ip = ( nic.value.ip != "" ? nic.value.ip : "" )
    }
  }
  permissions = var.permissions
  depends_on = [  opennebula_image.system ]

  /* Not needed now
  depends_on = [ opennebula_image.system,
                 opennebula_image.data ]
  */
}

resource "opennebula_virtual_machine" "vm" {
  for_each = var.vms
  name = "${each.key}.${each.value.domain}"
  template_id = opennebula_template.vm_template[each.key].id
  depends_on = [ opennebula_template.vm_template ]
}