#!/bin/bash -e

DVD_DEVICE="${DVD_DEVICE:-/dev/dvd}"

if [ -z "$1" ]; then
    echo "Usage: $0 NAME [num]"
    exit 1
fi


# Calculate the name for ripping
base="$1"
last="$(find . -maxdepth 1 -type d -name "${base}*" | sort -n | tail -n 1)"
if [ -z "$last" ]; then
    num="1"
elif [ -n "$2" ]; then
    num="$2"
else
    num="${last##./${base}}"
    num="$(($num + 1))"
fi
next="${base}${num}"


# Sometimes the cached keys are wrong, since it only takes a few seconds to
# recrack I prefer to do it each time
rm -rf ~/.dvdcss

# Need to use libdvdread/libdvdcss to unlock the drive before copying
identify-disc --dvd-device "$DVD_DEVICE"


echo
echo
echo "Will rip to '$next'"
for i in $(seq 3 -1 1); do
    echo "    $i..."
    sleep 1
done


# Rip to ISO skipping bad sectors then decrypt to VIDEO_TS directory
set -x
rm -rf "${next}" "${next}.iso"
ddrescue -n -b 2048 "$DVD_DEVICE" "${next}.iso"
dvdbackup -n "$next" -M -i "${next}.iso" || true
identify-disc --dvd-device "$next"
rm "${next}.iso"
eject "$DVD_DEVICE"