Delete default VPC network in GCP with Terraform

delete_default_vpc.tf

###############################################################################
# Delete Default VPCs
###############################################################################
resource null_resource delete_default_vpc {
  triggers = {
    always = timestamp()
  }

  provisioner "local-exec" {
    command = <<-EOT
    FW_RULES_ID=$(gcloud compute firewall-rules list --filter="network~'default'" --format=json | jq .[].name )
    if [ "$${FW_RULES_ID}" == "" ]; then
      echo "No default firewall rules found"
    else
      gcloud compute firewall-rules delete $${FW_RULES_ID} --quiet
      echo "Default VPC deleted"
    fi

    VPN_ID=$(gcloud compute networks list --filter="name~'default'" --format="json" | jq .[0].name | xargs)
    if [ "$${VPN_ID}" == "" ]; then
      echo "No default VPC found"
    else
      gcloud compute networks delete $${VPN_ID} --quiet
      echo "Default VPC deleted"
    fi
    EOT
  }
}