data "vsphere_datacenter" "dc" {
  name = var.vsphere_datacenter
}

data "vsphere_virtual_machine" "vm" {
  name          = var.vm_name
  datacenter_id = data.vsphere_datacenter.dc.id
}

locals {
  current_disk_size_gb = data.vsphere_virtual_machine.vm.disks[0].size
  target_disk_size_gb  = local.current_disk_size_gb + var.increase_gb
}

resource "vsphere_virtual_machine" "resize" {
  name             = data.vsphere_virtual_machine.vm.name
  resource_pool_id = data.vsphere_virtual_machine.vm.resource_pool_id
  datastore_id     = data.vsphere_virtual_machine.vm.datastore_id

  num_cpus  = data.vsphere_virtual_machine.vm.num_cpus
  memory    = data.vsphere_virtual_machine.vm.memory
  guest_id  = data.vsphere_virtual_machine.vm.guest_id
  firmware  = data.vsphere_virtual_machine.vm.firmware
  scsi_type = data.vsphere_virtual_machine.vm.scsi_type

  network_interface {
    network_id   = data.vsphere_virtual_machine.vm.network_interface_types[0] != "" ? data.vsphere_virtual_machine.vm.network_interface[0].network_id : null
    adapter_type = data.vsphere_virtual_machine.vm.network_interface_types[0]
  }

  disk {
    label            = var.disk_label
    size             = local.target_disk_size_gb
    unit_number      = 0
    thin_provisioned = data.vsphere_virtual_machine.vm.disks[0].thin_provisioned
  }

  lifecycle {
    ignore_changes = [
      annotation,
      clone,
      extra_config,
      hv_mode,
      vapp,
      network_interface,
    ]
  }
}

output "current_disk_size_gb" {
  value = local.current_disk_size_gb
}

output "target_disk_size_gb" {
  value = local.target_disk_size_gb
}