#!/bin/bash

#set -o xtrace

PREFIX=""
if [[ -v 1 ]]; then
  PREFIX="${1}_"
  printf "Add prefix $PREFIX\n"
fi

cprompt () {
  read -r -s -N 1 -p "Continue [Enter]?"
  if [[ $REPLY == $'\n' ]]; then
    printf "\n"
  else
    printf "\n"
    printf "  Script stopped!\n"
    exit
  fi
}

#pushd vtb || exit 1
for TAR in *.tar.bz2; do
  if [[ $TAR =~ .tar.bz2 ]]; then
    VOL=${TAR%.tar.bz2}
    if [[ -n $PREFIX ]]; then
      VOL="${PREFIX}${VOL#*_}"
    fi
    if sudo docker volume ls -q |grep -qw "${VOL}"; then
      printf "Operation: ${TAR} -> ${VOL}\n"
      cprompt
      sudo cat "${TAR}" \
        |sudo docker run -i -v "${VOL}:/volume" --rm \
           loomchild/volume-backup restore -v -f - || exit 3
    fi
  fi
done
#popd || exit 1

set +o xtrace