#!/bin/bash

LOG=/dev/stdout
HOST=`hostname -s | titlecase`
CURRDATE=`date -u '+%FT%T'`
WHINE=""

TEMP=`getopt b:ie:h:w "$@"`

if [ $? != 0 ] ; then echo "Terminating..." >&2 ; exit 1 ; fi

eval set -- "$TEMP"

while true ; do
	case "$1" in
		-b)
			PARAMS="$PARAMS --bwlimit=$2"
			shift 2
			;;
		-i)
			LOG=`mktemp /tmp/backup-XXXXXX`
			PARAMS="$PARAMS --backup-dir=../$CURRDATE"
			SUFFIX=/current
			shift
			;;
		-e)
			PARAMS="$PARAMS --exclude=$2"
			shift 2
			;;
		-h)
			HOST=$2
			shift 2
			;;
		-w)
			WHINE="-oCheckHostIP=no"
			shift
			;;
		--)
			shift
			break
			;;
		*) echo "Internal error!" ; exit 1 ;;
	esac
done

if [ $# -ne 2 ]
then
	echo $0 '[-b bandwidth] [-i] [-w] [-h hostname] [-e exclude] sourcefolder backuproot'
	echo -e '\t-b\tRestrict bandwidth to kB/s'
	echo -e '\t-i\tIncremental'
	echo -e '\t-w\tSupress SSH IP warnings'
	[ $LOG  != /dev/stdout ] && rm -f $LOG
	exit 1
fi

SRC=$1
BACKUP=$2

if echo $BACKUP | grep : > /dev/null
then
	if ssh $WHINE `echo $BACKUP | cut -f 1 -d : ` test -w "`echo $BACKUP | cut -f 2 -d : `/.backup" '&&' touch "`echo $BACKUP | cut -f 2 -d : `/.backup"
	then
		sleep 1
	else
		echo $BACKUP does not appear to be a remote backup directory to make backup of ${SRC}. 2>&1
		[ $LOG  != /dev/stdout ] && rm -f $LOG
		exit 1
	fi
else
	if test -w "$BACKUP/.backup" && touch "$BACKUP/.backup"
	then
		sleep 1
	else
		echo $BACKUP does not appear to be a backup directory to make backup of ${SRC}. 2>&1
		[ $LOG  != /dev/stdout ] && rm -f $LOG
		exit 1
	fi
fi

NAME=`basename $SRC | titlecase `
if [ $NAME = / ]
then
	NAME=Root
fi

rsync -avbyi --delete-after --exclude ".xsession*" --exclude "Cache" --exclude ".cache" --exclude ".gvfs" --exclude "Junk" --exclude "*.nb" $PARAMS $SRC $BACKUP/$HOST/$NAME$SUFFIX > $LOG
if [ $LOG != /dev/stdout ]
then
	scp -q $LOG $BACKUP/$HOST/$NAME/$CURRDATE.log
	rm -f $LOG
fi