post_install() {
  getent passwd jamulus &>/dev/null || {
  echo "Creating jamulus user.."
  useradd --system --no-create-home -g nobody -s /bin/false jamulus &>/dev/null
  }
  cat <<HERE
Configure server variables:
 sudo systemctl edit jamulus.service
 paste the following text and adjust according to your needs

# central_server => https://github.com/corrados/jamulus/wiki/Central-Servers
# country ID => https://doc.qt.io/qt-5/qlocale.html#Country-enum
[Service]
Environment=central_server="name_of_the_server"
Environment=server_info="yourServerName;yourCity;[country ID]"

 systemctl daemon-reload

To start the service:
 sudo systemctl start jamulus

To enable the service at boot:
 sudo systemctl enable jamulus

HERE
}

post_remove() {
  echo "Consider removing jamulus user from the system"
}

op=$1
shift

$op "$@"