Gamer-Server-Utility-Scripts/Teamspeak/update.sh

#!/bin/bash
# Custom TS update script. There are 'better' update scripts out there.

# Ensure required commands are available
command -v jq >/dev/null 2>&1 || { echo >&2 "jq is required but it's not installed. Aborting."; exit 1; }
command -v curl >/dev/null 2>&1 || { echo >&2 "curl is required but it's not installed. Aborting."; exit 1; }
command -v wget >/dev/null 2>&1 || { echo >&2 "wget is required but it's not installed. Aborting."; exit 1; }

# VARIABLES
PATH=/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin
TS_DIR=/home/teamspeak/

# FUNCTIONS
get_versions() {
    server_info=$(curl -Ls 'https://www.teamspeak.com/versions/server.json' | jq -r '.linux.x86_64')
    remote_version=$(jq -r '.version' <<< "$server_info")
    echo "$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 -p "$TS_DIR/TS_Update/db_backup"
    cp "$TS_DIR/ts3server.sqlitedb" "$TS_DIR/TS_Update/db_backup/"
}

extract() {
    mkdir -p temp
    tar xf TS.tar.bz2 -C temp/
}

move() {
    cp -rf temp/teamspeak3-server_linux_amd64/* "$TS_DIR"
}

stop_ts() {
    echo "Stopping Teamspeak server."
    screen -p 0 -S teamspeak -X stuff "serverprocessstop$(printf '\r')"
    sleep 15
    screen -X -S teamspeak quit
}

clean_up() {
    rm -rf temp/ TS.tar.bz2
    chown -R teamspeak:teamspeak "$TS_DIR"
}

start_ts() {
    cd "$TS_DIR"
    screen -dmS teamspeak ./teamspeak.sh 
}

# MAIN SCRIPT
get_versions

if [ "$remote_version" = "$local_version" ]; then
    echo "No update needed!"
    exit 0
else
    echo "Update required"
    echo "Starting update"
    download
    stop_ts
    extract
    move
    clean_up
    start_ts
fi

exit 0