#! /bin/bash
# Rsyncs ~/Homework dir and contents.

case "$#" in
0)
	# nothing was passed in extra, do everything
	doAll=true;
	;;
1)
	case "$1" in
	"-fh" | "--from-home")
		fromHome=true;
		;;
	"-th" | "--to-home")
		toHome=true;
		;;
	*)
		showHelp=true;
		;;
	esac
	;;
*)
	echo "Wrong number of parameters provided.";
	echo -e "Usage:\t$0";
	echo -e "\t$0 --from-home";
	echo -e "\t$0 -from";
	echo -e "\t$0 --to-home";
	echo -e "\t$0 -to";
	echo -e "\t$0 -h\t(Prints a full help message.)";
	exit;
	;;
esac	

if [ $showHelp ]; then
	echo "Usage: $0 [OPTIONS]"
	echo -e "\t-OPTIONS-"
	echo -e "\tNo parameters, copying both back and forth (does not overwrite, only updates)"; 
	echo -e "\t--from-home OR -from copies files from Home to localhost only.";
	echo -e "\t--to-home OR -to copies files from localhost to Home only.";
	echo -e "\t-h prints this help message";
	exit;
fi

if [ -e ~/Homework ]; then
	# z, compress
	# r, recursive
	# v, verbose
	# n, dry-run
	# u, updates only (dont overwrite if DEST has newer)
	if [[ $doAll || $fromHome ]]; then
		echo "Copying from Home to localhost";
		rsync -zru mkava@home.mattkava.com:~/Homework/* ~/Homework/
	fi
	if [[ $doAll || $toHome ]]; then
		echo "Copying to Home from localhost";
		rsync -zru ~/Homework/* mkava@home.mattkava.com:~/Homework/
	fi
else
	echo "~/Homework doesnt exist.";
	exit;
fi
echo "Back up complete.";