but3-iac/tp-cloud/terraform/modules/iam/main.tf

resource "google_service_account" "terraform_sa" {
  account_id   = "terraform-admin"
  display_name = "Terraform Administrative Service Account"
}

# 2. Clé du compte de service
resource "google_service_account_key" "terraform_sa_key" {
  service_account_id = google_service_account.terraform_sa.name
  public_key_type = "TYPE_X509_PEM_FILE"
}

resource "google_project_iam_member" "terraform_roles" {
  for_each = toset([
    "roles/compute.admin",
    "roles/iam.serviceAccountUser",
    "roles/resourcemanager.projectIamAdmin",
    "roles/compute.osLogin",
    "roles/compute.networkAdmin",
  ])

  project = var.project_id
  role    = each.value
  member  = "serviceAccount:${google_service_account.terraform_sa.email}"
}

resource "google_compute_project_metadata" "oslogin" {
  metadata = {
    enable-oslogin = "TRUE"
    ssh-keys       = "student:${file("~/.ssh/id_ed25519.pub")}"
  }
}