variable "project_id" {
  type    = string
  default = "ret-edge-pltf-infra"
}

variable "zone" {
  type    = string
  default = "us-east1-b"
}

variable "image_description" {
  type    = string
  default = "Base image for Edge CI runner machines"
}

variable "source_image_family" {
  type    = string
  // default = "gsre-base-ubuntu-2204" // either deprecated or abandoned
  default = "ubuntu-2204-lts"
}

variable "source_image" {
  type    = string
  default = ""
}

variable "source_image_project_id" {
  type    = list(string)
  default = ["ubuntu-os-cloud", "gsre-compute-images-prod"]
}

locals {
  timestamp = regex_replace(timestamp(), "[- TZ:]", "")
}

source "googlecompute" "golden-image-ubuntu-2204" {
  project_id                  = var.project_id
  impersonate_service_account = "golden-image-generation@ret-edge-pltf-infra.iam.gserviceaccount.com"
  service_account_email       = "golden-image-generation@ret-edge-pltf-infra.iam.gserviceaccount.com"

  image_description       = var.image_description
  image_name              = "edge-runner-${local.timestamp}"
  image_family            = "edge-runner"
  source_image_family     = var.source_image_family
  source_image            = var.source_image
  source_image_project_id = var.source_image_project_id
  zone                    = var.zone
  machine_type            = "n2-standard-16"
  disk_size               = 256

  ssh_username            = "packer"
  communicator            = "ssh"
  use_iap                 = true
  use_internal_ip         = true
  use_os_login            = false
  omit_external_ip        = true
  temporary_key_pair_type = "ed25519"

  scopes = [
    "https://www.googleapis.com/auth/cloud-platform",
  ]
}

build {
  sources = ["sources.googlecompute.golden-image-ubuntu-2204"]

  provisioner "file" {
    source      = "${path.root}/startup_script.sh"
    destination = "/tmp/startup_script.sh"
  }

  provisioner "file" {
    source      = "${path.root}/shutdown_script.sh"
    destination = "/tmp/shutdown_script.sh"
  }

  provisioner "shell" {
    script = "${path.root}/setup_script.sh"
    expect_disconnect = true
    // 2300218 allows for disconnect causes by reboot during setup
    valid_exit_codes = [0, 2300218]
  }
}