Server Update Script

#!/usr/bin/env bash
#author        : Jaob
#version        : 1.0
#notes        : script has to be in the same location as the server folder
#=============================================


dirname=""
url="http://download.rising-world.net/download.php?game=risingworld&type=server&filetype=tar"


txtred="$(tput setaf 1)" # Red
txtgrn="$(tput setaf 2)" # Green
txtreset="$(tput sgr0)"   # Color Reset


echo "${txtgrn}[INF0] Start updating Rising World server${txtreset}"


[[ -x "$(which wget)" ]] || { echo "${txtred}[ERROR] You have to install wget first!${txtreset}" ; exit 1; }
[[ ! -z "$dirname" && -d "${PWD}/${dirname}" ]] || { echo "${txtred}[ERROR] Server folder is incorrect!${txtreset}" ; exit 1; }


echo "${txtgrn}[INFO] Download starts from: ${url}${txtreset}"
newfile="$(date +%s).tar"


if wget --content-disposition -v -t 3 -c -P "$PWD" -O "$newfile" "$url"
    then
        echo "${txtgrn}[INFO] Download was successful"
        echo "[INFO] Starting backup${txtreset}"

        if tar -czf "server-backup$(date +%s).tar.gz" "${dirname}"
            then
                echo "${txtgrn}[INFO] Backup was successful${txtreset}"

                tar -xf "${newfile}" -C "${PWD}/${dirname}" "server.jar" "lib" || { echo "${txtred}[ERROR] Can't extract files in ${dirname}!${txtreset}" ; exit 1; }  
                echo "${txtgrn}[INFO] Update was successful${txtreset}"

                rm "${newfile}" || echo "${txtgrn}[INFO] Can't delete downloaded file${txtreset}"

        else
            echo "${txtred}[ERROR] tar failed | Updating progress stopped${txtreset}"
        fi


else
    echo "${txtred}[ERROR] wget failed! | Updating progress stopped${txtreset}"
fi