#!/bin/bash
#Custom TS update script. There are 'better' update scripts out there. 
 
##########################
#       Requires jq      #
# sudo apt install jq -y #
##########################
 
####################################### VARIABLES #####################################
PATH=/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin
tsdir=/home/teamspeak/
 
 
 
#################################### FUNCTIONS ##################################
get_versions() {
    server=$(curl -Ls 'https://www.teamspeak.com/versions/server.json' | jq ".linux.x86_64")
    remote_version=$(printf '%s' "$server" | jq -r '.version')
    echo $remote_version
 
    local_version=$(grep -Eom1 'Server Release \S*' "CHANGELOG" | cut -b 16-)
    echo $local_version
}

download() {
wget https://files.teamspeak-services.com/releases/server/$remote_version/teamspeak3-server_linux_amd64-$remote_version.tar.bz2 -O TS.tar.bz2
}
 
db_backup(){
mkdir $tsdir/TS_Update/db_backup
cp $tsdir/ts3server.sqlitedb $tsdir/TS_Update/db_backup/
}
 
extract(){
    mkdir temp
    tar xf TS.tar.bz2 -C temp/
    }
 
move(){
    cp -rf temp/teamspeak3-server_linux_amd64/* $tsdir
    }
 
stop_ts(){
    echo "Waiting for Teamspeak to save."
    screen -p 0 -S teamspeak -X eval "stuff serverprocessstop\015"
    screen -S teamspeak -p 0 -X stuff "serverprocessstop^M"
    sleep 15
    screen -X -S teamspeak quit
}
 
clean_up(){
    rm -rf temp/
    chown -R teamspeak:teamspeak $tsdir
    rm -f TS.tar.bz2
 
}
 
start_ts(){
    cd $tsdir
    screen -dmS teamspeak ./teamspeak.sh 
}
 
 
 
############################################################# RUN IT ! ##########################################
 
get_versions
if [ $remote_version = $local_version ];
    then
        echo "No update needed!" && exit 0
    else
        echo
        echo "Update required"
        echo
        sleep 0.5
        echo
        echo "Starting Update"
        echo
        download
        stop_ts
        extract
        move
        clean_up
        start_ts
fi
 
 
exit