#!/bin/bash

# This script does a backup of a directory to the backup server.
# It is based on the following example script:
# This script does personal backups to a rsync backup server. You will end up
# with a 7 day rotating incremental backup. The incrementals will go
# into subdirectories named after the day of the week, and the current
# full backup goes into a directory called "current"
# tridge@linuxcare.com

# Run as root.
# copyDir dir dest [CleanUp]
# dir is the directory to back up.
# dest is the backup set name. 
# if CleanUp is not empty, the last-period backup is removed.  Only do this once per day.

if [ $# -lt 2 ]; then
  echo "copyDir dir set [clean]"
  echo "set is daily or weekly"
  echo "If there is ANYTHING in the [clean] position, the previous"
  echo "  cycle's diff dir is removed."
  exit
fi

echo Copy $1 

if [ "$2" == "weekly" ]; then
  echo "Weekly"
  BSERVER=io.dhzone.com
  EXCLUDES=/etc/backup/exclude
  BACKUPDIR=Week_`date +%W`
  SET="${HOSTNAME%%.*}/weekly"
else # "daily"
  echo "Daily"
  BSERVER=io.dhzone.com
  EXCLUDES=/etc/backup/exclude
  BACKUPDIR=`date +%A`
  SET="${HOSTNAME%%.*}/daily"
fi

# directory to backup
BDIR=$1

########################################################################

OPTS="--force --ignore-errors --delete-excluded --exclude-from=$EXCLUDES 
      --delete --backup --backup-dir=$BACKUPDIR -a 
      --links  "

export PATH=$PATH:/bin:/usr/bin:/usr/local/bin

if [ $# -ge 3 ]; then
  echo "Clean"
  # the following line clears the last weeks incremental directory
  [ -d /tmp/emptydir ] || mkdir /tmp/emptydir
  rsync  --delete -a /tmp/emptydir/ $BSERVER:/backup/$SET/$BACKUPDIR/
  rmdir /tmp/emptydir
fi

# now the actual transfer
rsync $OPTS $BDIR $BSERVER:/backup/$SET