#!/bin/sh

# incremental-backups: Backups developer's website files
# Copyright (C) 2009 David Leutzinger (leutzdave @ charter.net)
# /home/david/bin/Website/backup/incremental-backups
# 2009-08-17 vs 0.1
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

# ---------- Main ----------

date=`date "+%Y-%m-%d-T%H:%M:%S"`
USER_DIR="home/david"
SOURCE="/home/david/http"
TARGET="/mnt/data/$USER_DIR/Backups/back-$date"
LOGFILE="/mnt/data/$USER_DIR/back-$date.log"
EXCLUDE=""

DIRS=`ls -1t /mnt/data/$USER_DIR/Backups/ | grep -v current`
count="0"
#echo "DIRS = "
#echo "$DIRS"
#echo "Pausing ... Press [Enter]" ; read pause
for i in $DIRS
do
    if [ -d "/mnt/data/$USER_DIR/Backups/$i" ];then
        count=`expr $count + 1`
        echo "Backup #$count = /mnt/data/$USER_DIR/Backups/$i" | tee -a $LOGFILE
        if [ "$count" -gt 6 ];then
            echo "Removing backup #$count" | tee -a $LOGFILE
            rm -rf "/mnt/data/$USER_DIR/Backups/$i"
            rm "/mnt/data/$USER_DIR/$i.log"
            #echo "Pausing ... Press [Enter]" ; read pause
        fi
    fi
done

echo "Making new backup $TARGET" | tee -a $LOGFILE
rsync -aP --link-dest=/mnt/data/$USER_DIR/Backups/current --delete-after --delete-excluded --delay-updates $EXCLUDE $SOURCE $TARGET
rm /mnt/data/$USER_DIR/Backups/current | tee -a $LOGFILE
ln -s back-$date /mnt/data/$USER_DIR/Backups/current