Minecraft Server Manager Utility

minecraft_util.sh

#!/bin/zsh

welcome_menu () {
	clear -x;
	echo "\e[1;37m[Minecraft Server Util]\e[0m";
	echo "version: \e[1;37mv0.0.1\e[0m";
	echo "by \e[1;4;37m@Aries0d0f\e[0m | \e[1;4;36mhttps://aries0d0f.me\e[0m";
	echo "\r";
	echo "Press \e[1;37m[ENTER]\e[0m to start this util";
	echo "Press \e[1;37m'q'\e[0m to exit";

	printf "\e[1;32m> \e[0m";
	read "KEY?";

	if [[ "$KEY" =~ ^[Qq]$ ]];
	then
		echo "\e[3;36mBye!\e[0m";
		sleep 1;
		clear -x;
		exit;
	elif [[ "$KEY" = "" ]];
	then
		main_menu;
	else
		echo "\e[3;31mInvalid command.\e[0m\n";
		sleep 1;
		welcome_menu;
	fi
}

main_menu () {
	clear -x;
        echo "\e[1;37m[Minecraft Server Sessions]\e[0m";

	tput sc;
	printf "\e[3;36mLoading...\e[0m";
	sleep 1;

	SERVER_SESSIONS=("${(@f)$(tmux ls | sed -En "s/mc-server-(.*)\: (.*)/\1/p")}");
	tput rc;
	tput el;
	echo "\r";

	count=1;
	for SESSION in $SERVER_SESSIONS;
	do
		echo "\e[1;37m$count\e[0m - \e[1;33m$SESSION\e[0m";
		count=$((count + 1));
	done

	echo "\r";

	echo "\e[3;36mChoose one to continue...\e[0m";
	printf "\e[1;32m> \e[0m";
	while read "KEY?";
	do
		if [[ "$KEY" =~ ^[Qq] ]];
        	then
			echo "\e[3;36mBye!\e[0m";
			sleep 1;
			clear -x;
                	exit;
		elif [[ "$KEY" =~ ^([0-9])+ ]]
		then
			server_handler $SERVER_SESSIONS[$KEY];
			break;
		else
			echo "\e[3;31mInvalid command.\e[0m\n";
			sleep 1;
			main_menu;
			break;
		fi
	done
}

server_handler () {
	clear -x;
	SERVER=$1;
	echo "\e[1;37m[ Server: \e[1;33m$SERVER\e[1;37m ]\e[0m";

	tput sc;
	echo "\e[3;36mLoading server...\e[0m";
	sleep 1;

	SERVER_PATH="$HOME/Minecraft/Servers/$SERVER";
	SERVER_ENGINE=`basename $(readlink -f "$SERVER_PATH/server.jar") | sed -En "s/minecraft_server.(.*).jar/\1/p"`;
	tput rc;
	echo "Location:                \e[1;37m$SERVER_PATH\e[0m";
	echo "Minecraft Server Engine: \e[1;37m$SERVER_ENGINE\e[0m";
	sleep 1;
	server_menu $SERVER;
}

server_menu () {
	SERVER=$1;

	tput sc;
	echo "\e[3;36mAttach to Minecraft Server Shell...\e[0m";
	sleep 2;

	tput rc;
	tput el;

	server_manual;
	printf "\e[1;37mMC\e[0m@\e[1;33m$SERVER\e[0m \e[0;32m>\e[0m ";
	while read "KEY?";
	do
		if [[ "$KEY" =~ ^[Bb] ]];
		then
			broadcaster $SERVER;
			printf "\e[1;37mMC\e[0m@\e[1;33m$SERVER\e[0m \e[0;32m>\e[0m ";
		elif [[ "$KEY" =~ ^[Mm] ]];
		then
			broadcaster $SERVER "Maintenance work needs to be performed on this Minecraft server.";
			broadcaster $SERVER "You will be automatically logged off after 30 min."
			printf "\e[1;37mMC\e[0m@\e[1;33m$SERVER\e[0m \e[0;32m>\e[0m ";
		elif [[ "$KEY" =~ ^[Ss] ]];
		then
			shutdown $SERVER;
			echo "\r\e[3;36mBack to main menu\e[0m";
			sleep 1;
			clear -x;
			main_menu;
			break;
		elif [[ "$KEY" =~ ^[Rr] ]];
		then
			shutdown $SERVER;
			sleep 5;

			tput sc;
			printf "\r\e[3;36mServer \e[0m\e[1;33m$SERVER\e[0m\e[3;36m preparing to restart...\e[0m";
			$HOME/Minecraft/Scripts/startup.sh > /dev/null 2>&1;

			tput rc;
			tput el;
			echo "\r\e[3;36mServer \e[0m\e[1;33m$SERVER\e[0m\e[3;36m is start.\e[0m";
			sleep 2;
			echo "\r\e[3;36mBack to main menu\e[0m";
                        sleep 1;
                        clear -x;
                        main_menu;
                        break;
		elif [[ "$KEY" =~ ^[Ll] ]];
		then
			command_dispatcher $SERVER "/list";
			sleep 5;
			PLAYERS=`cat "/tmp/stdout_mc-server-$SERVER.log" | sed -En "s/.*\]\: (.*)/\1/p"`;
			echo "\r$PLAYERS";
			printf "\e[1;37mMC\e[0m@\e[1;33m$SERVER\e[0m \e[0;32m>\e[0m ";
		elif [[ "$KEY" =~ ^[Qq] ]];
		then
			echo "\e[3;36mBye!\e[0m";
			sleep 1;
			clear -x;
			exit 0;
		elif [[ "$KEY" =~ ^[Xx] ]];
		then
			clear -x;
			main_menu;
		elif [[ "$KEY" =~ ^[Hh] ]];
		then
			server_manual;
			printf "\e[1;37mMC\e[0m@\e[1;33m$SERVER\e[0m \e[0;32m>\e[0m ";
		else
			echo "\e[3;31mInvalid command. help for manual\e[0m".
			printf "\e[1;37mMC\e[0m@\e[1;33m$SERVER\e[0m \e[0;32m>\e[0m ";
		fi
	done


}

server_manual () {
	echo "---------------------------------------------------"
	echo "B, b, broadcast		Broadcast custom message";
	echo "M, m, maintenance	Send maintenance message";
	echo "S, s, shutdown		Shutdown Minecraft Server";
	echo "R, r, restart		Restart Minecraft Server";
	echo "L, l, list		List online player";
	echo "X, x			Back to main menu";
	echo "Q, q, quit		Exit this util";
	echo "H, h, help		Show this manual";
	echo "---------------------------------------------------";
}

broadcaster () {
	SERVER_NAME=$1;
	MESSAGE=$2;
	command_dispatcher $1 "/say $2";
}

shutdown () {
	SERVER=$1;

	tput ed;
        tput el;
        tput sc;
        printf "\r\e[3;36mSaving all data...\e[0m";
        command_dispatcher $SERVER "/save-all";
        sleep 10;
        tput rc;
        tput el;

        tput sc;
        printf "\r\e[3;36mShutdown \e[0m\e[1;33m$SERVER\e[0m\e[3;36m...\e[0m";
        command_dispatcher $SERVER "/stop";
        sleep 5;
        tput rc;
        tput el;

        echo "\r\e[3;36mServer \e[0m\e[1;33m$SERVER\e[0m\e[3;36m is shutdown.\e[0m";
	sleep 1;
}

command_dispatcher () {
	TMUX_SERVER_SESSION="mc-server-$1";
	COMMAND=$2;
	LOG="/tmp/stdout_$TMUX_SERVER_SESSION.log";
	touch LOG;
	tmux attach -t $TMUX_SERVER_SESSION -d \;\
		set-buffer "$2" \;\
		paste-buffer \;\
		send-keys Enter \;\
		pipe-pane -o "cat > $LOG" \;\
		detach-client 1> /dev/null;

	blackhole_buffer;
}

blackhole_buffer () {
	tput sc;
	read -s -k 8;
	echo "\r";
	tput rc;
}

welcome_menu;