#!/bin/bash
# Minecraft Server startup script using screen

# Check if server is already running
if screen -list | grep -q "mcs"; then
    echo "Server is already running!  Type screen -r mcs to open the console"
    exit 1
fi

# Switch to server directory
cd /home/minecraft/

# Back up server
if [ -d "world" ]; then 
    echo "Backing up server (to minecraft/backups folder)"
    tar --exclude='backups' --exclude='logs' --exclude='server.jar' -pzcf backups/$(date +%Y.%m.%d.%H.%M.%S).tar.gz *
fi

echo "Starting Minecraft server.  To view window type screen -r mcs."
echo "To minimize the window and let the server run in the background, press Ctrl+A then Ctrl+D"
screen -dmS mcs java -Xms1G -Xmx3G -XX:+ParallelRefProcEnabled -XX:+DisableExplicitGC -XX:+UnlockExperimentalVMOptions -XX:G1NewSizePercent=30 -XX:G1HeapRegionSize=8M -XX:+PerfDisableSharedMem -jar /home/minecraft/server.jar nogui