#!/bin/sh
if [ -z $1 ] || [ -z $2 ] || [ -z $3 ]; then echo "usage: automat server username password"; exit 1; fi 
pwf=~/.mtpw
srv=$1
prt=30000
usr=$2
passwd=$3
logfile=$HOME/.wslog
mtpath=$(dirname $0)
if [ -f $pwf ]; then pas=$(cat $pwf); fi
check_host() {
    if [ -x $(which nc) ]; then return 0; fi
    nc -zu $1 $2 && return 0;
    return 1
}

while true; do
    if check_host $srv $prt; then
        $mtpath/bin/minetest --go --address $srv --port $prt --name $usr --password $passwd;
    else echo host is down. waiting 10...; sleep 10
    fi
done