set -u

my_app_systemd_service="etc/systemd/system/${my_app_name}.service"
my_app_systemd_tmpfiles="etc/tmpfiles.d/${my_app_name}.conf"

echo ""
echo "Installing as systemd service"
echo ""

sed "s/MY_USER/$my_user/g" "$my_app_dist/$my_app_systemd_service" > "$my_app_dist/$my_app_systemd_service.2"
sed "s/MY_GROUP/$my_group/g" "$my_app_dist/$my_app_systemd_service.2" > "$my_app_dist/$my_app_systemd_service"
rm "$my_app_dist/$my_app_systemd_service.2"
safe_copy_config "$my_app_dist/$my_app_systemd_service" "$my_root/$my_app_systemd_service"

sed "s/MY_USER/$my_user/g" "$my_app_dist/$my_app_systemd_tmpfiles" > "$my_app_dist/$my_app_systemd_tmpfiles.2"
sed "s/MY_GROUP/$my_group/g" "$my_app_dist/$my_app_systemd_tmpfiles.2" > "$my_app_dist/$my_app_systemd_tmpfiles"
rm "$my_app_dist/$my_app_systemd_tmpfiles.2"
safe_copy_config "$my_app_dist/$my_app_systemd_tmpfiles" "$my_root/$my_app_systemd_tmpfiles"

$sudo_cmd systemctl stop "${my_app_name}.service" >/dev/null 2>/dev/null || true
$sudo_cmd systemctl daemon-reload
$sudo_cmd systemctl start "${my_app_name}.service"
$sudo_cmd systemctl enable "${my_app_name}.service"

echo ""
echo ""
echo "Fun systemd commands to remember:"
echo "  $sudo_cmd systemctl daemon-reload"
echo "  $sudo_cmd systemctl restart $my_app_name.service"
echo ""
echo "$my_app_name started with systemctl, check its status like so:"
echo "  $sudo_cmd systemctl status $my_app_name"
echo "  $sudo_cmd journalctl -xefu $my_app_name"
echo ""
echo ""