#! /bin/bash

set -eu

if [ "$#" -lt 1 ] ; then
  echo "Usage: $O dir_to_backup"
  exit 1
fi

basedir=/var/backups
dest=${basedir}/$(date -I)

mkdir -p "${dest}" || exit 3

error=0

for dir in "$@" ; do
    test -d "${dir}" || { 
    echo "${dir} don't exist or not a dir" 
    ((error+=1))
    continue
  }

  if [ ! -d "${dir}" ] ; then
    echo "${dir} don't exist or not a dir"
    ((error+=1))
    continue
  fi

  src=${dir}

# tar cpzf /var/backups/$(date -I)/etc.tgz /etc
  tar cpzf "${dest}/${src}.tgz" "${src}"
  ((error+=$?))

done

if [ $error -eq 0 ] ; then
  find "${basedir}"  -maxdepth 1 -type f -mtime +7 -exec echo rm {} \;
fi
exit $error