#!/bin/bash

# This runs in a cronjob every hour
# e.g. 0 */1 * * * /home/nathan/scripts/backup/backup_mc.sh -s mc -d /srv/mc -b /home/nathan/backups/mcRdiff/mc -r nathan@alphavps.aney.co.uk -R ~/backups/minecraft/mc

while getopts s:d:b:r:R:n: flag
do
	case "${flag}" in
	    s) SERVERNAME=${OPTARG};;
	    d) DIR=${OPTARG};;
	    b) BACKUPDIR=${OPTARG};;
	    r) REMOTE=${OPTARG};;
	    R) REMOTEBACKUP=${OPTARG};;
	    n) NOW=${OPTARG};;
	esac
done

TIME=$(date +%H%M) 

# Make backup location if it's not there
mkdir -p $BACKUPDIR

# Rdiff to reduce the storage needs of rsync
rdiff-backup \
	--exclude $DIR/scripts/ \
	$DIR $BACKUPDIR

rdiff-backup --force --remove-older-than 2M $BACKUPDIR

# If time is 00:00/midnight
if [ "$TIME" = 0000 ] || [ "$NOW" = 1 ]
then
	# Create the remote directory for backup if it doesn't exist
	ssh $REMOTE mkdir -p $REMOTEBACKUP
	# Copy the backup accross
	# -e ssh makes it secure
	rsync -azh \
		--delete \
		-e ssh \
		$BACKUPDIR/ \
		$REMOTE:$REMOTEBACKUP 
fi