#! /bin/bash -e

prog=${0##*/}
: ${DVD_CHECK_KEYS=dvd-check-keys}
bogus=nil
usage () {
  cat <<EOF
usage: $prog DIR ...
EOF
}
while getopts "h" opt; do
  case $opt in
    h) usage; exit 0 ;;
    *) bogus=t ;;
  esac
done
shift $(( $OPTIND - 1 ))
case $# in 0) bogus=t ;; esac
case $bogus in t) usage >&2; exit 2 ;; esac

if [ -t 1 ]; then red=$(tput setaf 1) green=$(tput setaf 2) plain=$(tput op)
else red= green= plain=; fi

DVDCSS_CACHE=off; export DVDCSS_CACHE
find "$@" -type f -name "*.iso" | sort | while IFS= read -r iso; do
  echo -n "check $iso..."
  retry=${iso%.iso}.retry
  set +e; ${DVD_CHECK_KEYS} -b"$retry.new" "$iso"; rc=$?; set -e
  case $rc in
    0) rm -f "$retry" echo " ${green}ok${plain}" ;;
    1) mv "$retry.new" "$retry"; echo " ${red}FAILED${plain}" ;;
    *) echo " ${red}ERROR${plain}"; exit 2 ;;
  esac
done