#!/bin/bash

do_backup() {
        mcbe-stop $1 "Shutting down server for scheduled daily backup."
        rsyn /home/mcadmin/worlds/ /vol/worlds/
        systemctl start mcbe
        rm /home/mcadmin/backup.lock
}

# Check if server is started
status=$(systemctl show "$service" -p ActiveState --value)
# if service is not active, do backup immediately and exit
if [[ $status == inactive ]]; then
        rsyn /home/mcadmin/worlds/ /vol/worlds/
        rm /home/mcadmin/backup.lock
        exit 0
fi

# Check if any players present
present=$(mcbe-exec list | cut -d ' ' -f 3 | cut -d '/' -f 1)
# if no players are present, do backup immediately and exit
if [[ $present == 0 ]]; then
        do_backup 0
        exit 0
fi

cd /home/mcadmin

# create backup.attempts file if it doesn't exist
if [[ ! -e backup.attempts ]]; then
        echo "0" > backup.attempts
fi

# read backup.wait and add one to it
attempts=$(( $(cat backup.attempts) + 1 ))

# if 12 or more attempts have already been made, go ahead and force a shutdown anyways
if [[ $attempts -ge 12 ]]; then
        do_backup 10
# otherwise, schedule another attempt in an hour
else
        systemd-run --on-active=1h $0
fi