resource "google_compute_network" "main" {
  name                    = "${local.name_prefix}-vpc"
  auto_create_subnetworks = false
}

resource "google_compute_subnetwork" "main" {
  name          = "${local.name_prefix}-subnet"
  ip_cidr_range = "10.10.0.0/20"
  region        = var.gcp_region
  network       = google_compute_network.main.id

  secondary_ip_range {
    range_name    = "pods"
    ip_cidr_range = "10.20.0.0/16"
  }

  secondary_ip_range {
    range_name    = "services"
    ip_cidr_range = "10.30.0.0/20"
  }

  private_ip_google_access = true
}

resource "google_compute_router" "main" {
  name    = "${local.name_prefix}-router"
  region  = var.gcp_region
  network = google_compute_network.main.id
}

resource "google_compute_router_nat" "main" {
  name                               = "${local.name_prefix}-nat"
  router                             = google_compute_router.main.name
  region                             = var.gcp_region
  nat_ip_allocate_option             = "AUTO_ONLY"
  source_subnetwork_ip_ranges_to_nat = "ALL_SUBNETWORKS_ALL_IP_RANGES"
}