#!/bin/bash

# last-backups version #VERSION#

[ -r "#ETCDIR#/backup.conf" ] && \
  . "#ETCDIR#/backup.conf"

usage () {
  >&2 echo \
'Usage: last-backups
Show information about date of last backups and warn about outdated ones.

Options:
#HELPTEXT#  #'
  [ -n "$1" ] && exit $1
  exit 1
}

if [ $# -eq 1 ]
then
  if [ "$1" == "--help" ]
  then
    usage 0
  elif [ "$1" == "--version" ]
  then
    >&2 echo '#VERSION#'
    exit 0
  fi
  usage
elif [ $# -gt 1 ]
then
  usage
fi

unset namen
unset veraltet
unset daten

for backupID in ${!backups[@]}
do
  dest="${backups["${backupID}"]%% *}"
  dest="${dest%/}"
  while [ ! -d "${dest}" ] && [ ${maxWait} -gt 0 ]
  do
    sleep 1
    maxWait=$[${maxWait}-1]
  done

  lbu=$(
    ls -1 ${dest} | \
      grep -v "^aktuell$" | \
      sed "s/^duplicity-\(inc\|full\)\.\(.*\.\)\?\([0-9]\{4\}\)\([0-9]\{2\}\)\([0-9]\{2\}\)T[0-9]\{6\}Z\..*$/\3_\4_\5/" | \
      sort -n | \
      uniq | \
      grep "^[0-9]\{4\}_[0-9]\{2\}_[0-9]\{2\}$" | \
      tail -n1
    )
  [ "${lbu}" == "" ] && lbu="1970_01_01"
  delta=$[$(date +%s) - $(date -d $(echo ${lbu} | sed "s/_//g") +%s)]
  namen[${#namen[@]}]=$(
    basename $(
      printf '%s\n' "${dest}" \
      | sed '
        s#/rsync$##
        s#/duplicity$##
      ' \
      | sed '
        :a
        s#/\('"${recognSubdirRegex}"'\)$#_\1#
        ta
      '
    )
  )
  if [ -f "/tmp/${backupID}.pid" ] && pgrep '(^|/|\s)hardlinked-backup\S*$' | grep -qxF "$(cat "/tmp/${backupID}.pid")"; then
    laeuft='_laeuft'
  else
    laeuft=''
  fi
  if [ ! -d "${dest}/${lbu}" ]
  then
    veraltet[${#veraltet[@]}]="LEER!${laeuft}"
  elif [ ${delta} -gt ${outdatedLimit} ] && \
    ! printf '%s\n' "${seldomBackups[@]}" | \
      grep -qxF "${backupID}"
  then
    veraltet[${#veraltet[@]}]="VERALTET!${laeuft}"
  elif [ ${delta} -gt ${outdatedSeldomLimit} ]
  then
    veraltet[${#veraltet[@]}]="VERALTET!${laeuft}"
  else
    veraltet[${#veraltet[@]}]="${laeuft}"
  fi
  daten[${#daten[@]}]="${lbu}"
done

nl=0
vl=0
dl=0

for ((i=0; i<${#namen[@]}; i++))
{
  [ ${#namen[${i}]} -gt ${nl} ] && nl=${#namen[${i}]}
  [ ${#veraltet[${i}]} -gt ${vl} ] && vl=${#veraltet[${i}]}
  [ ${#daten[${i}]} -gt ${dl} ] && dl=${#daten[${i}]}
}

for ((i=0; i<${#namen[@]}; i++))
{
  while [ ${#namen[${i}]} -lt ${nl} ]
  do
    namen[${i}]="${namen[${i}]} "
  done
  while [ ${#veraltet[${i}]} -lt ${vl} ]
  do
    veraltet[${i}]="${veraltet[${i}]} "
  done
  while [ ${#daten[${i}]} -lt ${dl} ]
  do
    daten[${i}]="${daten[${i}]} "
  done
}

for ((i=0; i<${#namen[@]}; i++))
{
  echo "${daten[${i}]} ${veraltet[${i}]} ${namen[${i}]} ${daten[${i}]}"
} | \
  sort | \
  sed "s/^\S\+\s//"