locals {
  # Lê o ficheiro base (que está no mesmo módulo)
  base_cloudinit = yamldecode(file("${path.module}/cloud-init-base.yaml"))

  # Renderiza cada ficheiro por VM
  vm_cloudinits = {
    for vm in var.proxmox_k8s_vms : vm.name => yamldecode(
      templatefile("${path.module}/cloud-init-vm.yaml.tftpl", {
        extra_packages = try(vm.extra_packages, [])
        extra_users    = try(vm.extra_users, [])
        extra_runcmd   = try(vm.extra_runcmd, [])
      })
    )
  }

  # Função recursiva para deep merge
  deep_merge = function("deep_merge", [any, any], any, <<EOT
    base, override = args
    result = {}
    for k in setunion(keys(base), keys(override)) {
      if can(base[k]) && can(override[k]) {
        if type(base[k]) == list && type(override[k]) == list {
          result[k] = concat(base[k], override[k])
        } else if type(base[k]) == map && type(override[k]) == map {
          result[k] = deep_merge(base[k], override[k])
        } else {
          result[k] = override[k]
        }
      } else if can(override[k]) {
        result[k] = override[k]
      } else {
        result[k] = base[k]
      }
    }
    return result
  EOT
  )

  # Resultado final = deep merge do base + vm
  merged_cloudinit = {
    for vm_name, vm_cfg in local.vm_cloudinits : vm_name => local.deep_merge(local.base_cloudinit, vm_cfg)
  }
}

resource "proxmox_virtual_environment_file" "vm_user_data" {
  for_each = local.merged_cloudinit

  node_name    = "fenix"
  datastore_id = "local-snippets"
  content_type = "snippets"

  source_raw {
    file_name = "cloud-init-iac-k8s-${each.key}.yaml"
    data      = yamlencode(each.value)
  }
}