install-service

#!/bin/bash

# Link, enable and start systemd service unit file for bedrock server instance

# Usage: ./install-service <instance name>
#
#   <instance name>
#     Name of the instance that will be installed. This argument
#     will be converted to lowercase and it's whitespace trimmed.

# Script arguments.
instance_name=$1


# Abort if script is not running as root.
if ! [ $(id -u) = 0 ]; then
   echo "This script must be run as root."
   exit 1
fi


# Abort if sytemd service unit file is not present.
instance_name="$(echo "$instance_name" | awk '{print tolower($0)}')"
instance_name="$(echo -e "${instance_name}" | tr -d '[[:space:]]')"
unit_file="instances/${instance_name}/mcbs-${instance_name}.service"

if [ ! -f $unit_file ]; then
  echo "Unit file is not present, cannot install service."
  exit 1
fi


# Stop and disable service if /etc/systemd/system/mcbs-<instance_name>.service exists
service_name="mcbs-${instance_name}"
unit_file_destiny="/etc/systemd/system/${service_name}.service"
if [ -f $unit_file_destiny ]; then
  systemctl stop $service_name
  systemctl disable $service_name
fi


# Copy systemd unit file to /etc/systemd/system/

cp --remove-destination $unit_file $unit_file_destiny
echo "Copied mcbs-${instance_name}.service to /etc/systemd/system/"


echo ""
echo "Bedrock Server instance service install completed."
echo ""
echo "To start the service, run:"
echo ""
echo "  systemctl start ${service_name}"
echo ""
echo "To enable the service(to start on boot), run:"
echo ""
echo "  systemctl enable ${service_name}"
echo ""
echo "To verify the service status, run:"
echo ""
echo "  systemctl status ${service_name}"
echo ""