#!/bin/bash

if [ ! -e $SOURCE ]

then

  echo "$SOURCE n'existe pas !"

  exit 1

fi

export LADATE=`date +%Y%m%d`

export HIER=`date +%Y%m%d -d "1 day ago"`

export LEJOUR=`date +%d`

export TODELETE=`date +%Y%m%d -d "3 months ago"`

DESTINATION=`basename $SOURCE`

if [ -d $TARGET/$LADATE/$DESTINATION ]

then

  echo "ALREADY DONE : $TARGET/$LADATE"

  exit 0

fi

if [ ! -d $TARGET/$HIER/$DESTINATION ]

then

  # Le backup d'hier n'existe pas

  #   PC éteint, problème backup, etc.

  # On prend le dernier backup comme référence

  echo "NOT FOUND : $TARGET/$HIER/$DESTINATION"

  LAST_ONE=`ls -tr $TARGET | tail -n 1`

  echo $LAST_ONE

  if [ ! -d $TARGET/$LAST_ONE/$DESTINATION ]

  then

    echo "SECOND CHANCE, NOT FOUND : $TARGET/$LAST_ONE/$DESTINATION"

    exit 1

  fi

  mv $TARGET/$LAST_ONE $TARGET/$HIER

  ln -s $TARGET/$HIER $TARGET/$LAST_ONE

fi

if [ -d $TARGET/$TODELETE/$DESTINATION ]

then

  rm -rf $TARGET/$TODELETE/$DESTINATION

fi

echo $TARGET/$LADATE/$DESTINATION

mkdir -p $TARGET

/usr/bin/rsync -a --no-o --delete --safe-links $EXCLUDED_DIRS --link-dest=$TARGET/$HIER/ $SOURCE $TARGET/$LADATE/

echo "DONE"